Journal articles: 'Dynamic simulation of power system'

1

Neuman, P., K. Máslo, B. Šulc, and A. Jarolímek. "Power System and Power Plant Dynamic Simulation." IFAC Proceedings Volumes 32, no. 2 (July 1999): 7294–99. http://dx.doi.org/10.1016/s1474-6670(17)57244-4.

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Sun, Shu Xia, Xiang Jun Zhu, and Ming Ming Wang. "Power Turret the Dynamics Simulation Analysis of Power Turret." Applied Mechanics and Materials 198-199 (September 2012): 133–36. http://dx.doi.org/10.4028/www.scientific.net/amm.198-199.133.

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The dynamic performance of the CNC turret affect the cutting capability and cutting efficiency of the NC machine tool directly, embody the core level of the design and manufacture of the NC machine tool. However, the dynamic performance of the CNC turret mostly decided by the dynamic performance of the power transmission system of the power turret. This passage use Pro/E to set the accurate model of the gears and the CAD model of the gear transmission system and based on this to constitute the ADAMS model of virtual prototype. On the many-body contact dynamics theory basis, dynamic describes the process of the mesh of the gears, work out the dynamic meshing force under the given input rotating speed and loading, and the vibration response of the gear system. The simulation result disclosure the meshing shock excitation and periodical fluctuation phenomena arose by stiffness excitation of the gear transmission. Analyses and pick-up the radial vibration response of the output gear of the gear transmission system as the feasibility analysis data.

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Kurita, A., H. Okubo, K. Oki, S. Agematsu, D. B. Klapper, N. W. Miller, W. W. Price, J. J. Sanchez-Gasca, K. A. Wirgau, and T. D. Younkins. "Multiple time-scale power system dynamic simulation." IEEE Transactions on Power Systems 8, no. 1 (1993): 216–23. http://dx.doi.org/10.1109/59.221237.

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Liu, Chengxi, Bin Wang, and Kai Sun. "Fast Power System Dynamic Simulation Using Continued Fractions." IEEE Access 6 (2018): 62687–98. http://dx.doi.org/10.1109/access.2018.2876055.

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Dinkelbach, Jan, Ghassen Nakti, Markus Mirz, and Antonello Monti. "Simulation of Low Inertia Power Systems Based on Shifted Frequency Analysis." Energies 14, no. 7 (March 27, 2021): 1860. http://dx.doi.org/10.3390/en14071860.

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New types of power system transients with lower time constants are emerging due to the replacement of synchronous generation with converter interfaced generation and are challenging the modeling approaches conventionally applied in power system simulation. Quasi-stationary simulations are based on classical phasor models, whereas EMT simulations calculate the instantaneous values of models in the time domain. In addition to these conventional modeling approaches, this paper investigates simulation based on dynamic phasor models, as has been proposed by the Shifted Frequency Analysis. The simulation accuracy of the three modeling approaches was analyzed for characteristic transients from the electromagnetic to the electromechanical phenomena range, including converter control as well as low inertia transients. The analysis was carried out for systems with converter interfaced and synchronous generation whilst considering the simulation step size as a crucial influence parameter. The results show that simulations based on dynamic phasors allow for larger step sizes than simulations that calculate the instantaneous values in the time domain. This can facilitate the simulation of more complex component models and larger grid sizes. In addition, with dynamic phasors, more accurate simulation results were obtained than with classical phasors, in particular—but not exclusively—in a low inertia case. Overall, the presented work demonstrates that dynamic phasors can enable fast and accurate simulations during the transition to low inertia power systems.

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Li, Ang. "Simulation and Application of Power System Stabilizer on Power System Transient Stability." Open Electrical & Electronic Engineering Journal 8, no. 1 (December 31, 2014): 258–62. http://dx.doi.org/10.2174/1874129001408010258.

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This paper introduces the working principle and the mathematical model of additional power system excitation control-Power System Stabilizer (PSS). Through established a typical single machine-infinite bus power system simulation model, we simulate the synchronous generator’s transient operational characteristics following a severe disturbance. The simulation results show that the PSS can not only effectively increase the system damping, but also improve operational characteristics of the generator, considerably enhance power system dynamic and transient stability.

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He, Ping, Seyed Arefifar, Congshan Li, Fushuan Wen, Yuqi Ji, and Yukun Tao. "Enhancing Oscillation Damping in an Interconnected Power System with Integrated Wind Farms Using Unified Power Flow Controller." Energies 12, no. 2 (January 21, 2019): 322. http://dx.doi.org/10.3390/en12020322.

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The well-developed unified power flow controller (UPFC) has demonstrated its capability in providing voltage support and improving power system stability. The objective of this paper is to demonstrate the capability of the UPFC in mitigating oscillations in a wind farm integrated power system by employing eigenvalue analysis and dynamic time-domain simulation approaches. For this purpose, a power oscillation damping controller (PODC) of the UPFC is designed for damping oscillations caused by disturbances in a given interconnected power system, including the change in tie-line power, the changes of wind power outputs, and others. Simulations are carried out for two sample power systems, i.e., a four-machine system and an eight-machine system, for demonstration. Numerous eigenvalue analysis and dynamic time-domain simulation results confirm that the UPFC equipped with the designed PODC can effectively suppress oscillations of power systems under various disturbance scenarios.

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Jang, Jin-Seok, and Jeong-Hyun Sohn. "59269 DYNAMICS SIMULATION OF OFFSHORE WIND POWER SYSTEM SUBJECTED TO WAVE EXCITATION(Multibody System Analysi)." Proceedings of the Asian Conference on Multibody Dynamics 2010.5 (2010): _59269–1_—_59269–5_. http://dx.doi.org/10.1299/jsmeacmd.2010.5._59269-1_.

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Yu, Rui, Shi Wei Yao, and Chun Guo Wang. "Dynamic Simulation on Secondary System of Nuclear Power Plant." Advanced Materials Research 591-593 (November 2012): 620–25. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.620.

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The secondary system of Qinshan phase I nuclear power plant is simulated in this study. According to the characteristics of the JTopmeret model, the system is divided into six parts for modeling, which are the deaerator, the high pressure (HP) turbine, the low pressure (LP) turbine, the moisture separator reheater (MSR), the condensate system, and the feedwater system. All parts are built as the graphic automatic models in JTopmeret and debugged on the large-scale simulation platform GSE to complete the steady-state and dynamic simulation of the models. The results show that the steady-state and dynamic processes of the models are consistent with the characteristics of the actual system. It verifies the correctness of the simulation models. Thus, this research is able to provide guidance for the operation analysis and the equipment debugging of the secondary system of the nuclear power plant.

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Li, Xiao Dong, Zhong Xing Dong, Wei Zong, and Zong Qi Liu. "A Battery Dynamic Model for the Power System Simulation." Advanced Materials Research 805-806 (September 2013): 458–63. http://dx.doi.org/10.4028/www.scientific.net/amr.805-806.458.

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This paper analyzes the battery dynamic characteristics as well as some existing battery models, then presents a universal battery model applicable to micro-grid simulation. The model is composed of a controlled voltage source in series with a constant resistance .The voltage of the controlled voltage source is a one-to-one correspondence with the state of charge (SOC) of the battery, which can effectively avoid the algebraic loop problem. The parameters of the model can be easily extracted from the battery discharge curve. The simulation results shows that the biggest advantage of this model is that the initial SOC of the battery can be set accordingly, which allows the battery to be charged or discharged from any SOC conveniently.

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Tersztyansky, T., L. Szabo, and A. Faludi. "Power System Decoupling Analysis by Time-Domain Dynamic Simulation." IFAC Proceedings Volumes 21, no. 11 (September 1988): 255–58. http://dx.doi.org/10.1016/s1474-6670(17)53752-0.

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Hiskens, I. A., and J. Alseddiqui. "Sensitivity, Approximation, and Uncertainty in Power System Dynamic Simulation." IEEE Transactions on Power Systems 21, no. 4 (November 2006): 1808–20. http://dx.doi.org/10.1109/tpwrs.2006.882460.

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Deckmann, S. M., V. F. da Costa, and D. A. Alves. "Dynamic Simulation for Interconnected Power Systems." IFAC Proceedings Volumes 18, no. 7 (July 1985): 261–68. http://dx.doi.org/10.1016/s1474-6670(17)60444-0.

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El-Sefy, Mohamed, Mohamed Ezzeldin, Wael El-Dakhakhni, Lydell Wiebe, and Shinya Nagasaki. "System dynamics simulation of the thermal dynamic processes in nuclear power plants." Nuclear Engineering and Technology 51, no. 6 (September 2019): 1540–53. http://dx.doi.org/10.1016/j.net.2019.04.017.

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Pianko-Oprych, Paulina, and Mateusz Palus. "Simulation of SOFCs based power generation system using Aspen." Polish Journal of Chemical Technology 19, no. 4 (December 1, 2017): 8–15. http://dx.doi.org/10.1515/pjct-2017-0061.

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Abstract This study presents a thermodynamic Aspen simulation model for Solid Oxide Fuel Cells, SOFCs, based power generation system. In the first step, a steady-state SOFCs system model was developed. The model includes the electrochemistry and the diffusion phenomena. The electrochemical model gives good agreement with experimental data in a wide operating range. Then, a parametric study has been conducted to estimate effects of the oxygen to carbon ratio, O/C, on reformer temperature, fuel cell temperature, fuel utilization, overall fuel cell performance, and the results are discussed in this paper. In the second step, a dynamic analysis of SOFCs characteristic has been developed. The aim of dynamic modelling was to find the response of the system against the fuel utilization and the O/C ratio variations. From the simulations, it was concluded that both developed models in the steady and dynamic state were reasonably accurate and can be used for system level optimization studies of the SOFC based power generation system.

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Zheng, Hui Ping, Min Xue, Yan Zhao, Xin Yuan Liu, and Yu Han. "A Comprehensive Evaluation Method on Dynamic Simulation Accuracy of Power System." Applied Mechanics and Materials 541-542 (March 2014): 869–74. http://dx.doi.org/10.4028/www.scientific.net/amm.541-542.869.

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In order to overcome the shortcomings of the present accuracy assessment methods of power system dynamic simulation, this paper focuses the permanent single phase short-circuit fault which occurs in a large probability in power grids,and selects the typical electrical quantities which is very concerned in engineering after the fault happened. A time-scale based error criteria on simulation validation is proposed, and a comprehensive error criteria according to the average errors between simulation data and actual data is proposed to evaluate objectively the simulation accuracy of the typical electrical quantities. Considering the variation characteristics of the electrical quantities, the simulation accuracy evaluation of a single electrical element is expended to the simulation accuracy evaluation of the entire network, so not only the comprehensive evaluation about the model and its parameters but also the information for model modification and parameter correction can be obtained. The effectiveness of the proposed method is verified by the numerical results on the New England 10 Unit 39 Bus powers system.

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Song, Shi Gang, Xiao Ping Li, and Ze Chang Sun. "Design and Simulation of Pure Electric Vehicle Power System." Advanced Materials Research 608-609 (December 2012): 1541–44. http://dx.doi.org/10.4028/www.scientific.net/amr.608-609.1541.

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According to pure electric vehicle dynamic requirements and the driving conditions, took an electric vehicle as an example, analyzed principle and method of power system with voltage, electric current, capacity and connection methods. Software ADVISOR was employed to establish vehicle model, analyzed dynamic performance under drive cycle conditions. Simulation result indicate that battery pack is in normal state, dynamic performances including acceleration performance, gradient ability, maximum speed, driving mileage are satisfied to design requirements. So the rationality and validity of the power system are demonstrated.

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Li, Peng, Ning Bo Wang, De Zhi Chen, Xiao Rong Zhu, and Yun Ting Song. "Preliminary Study on the Influence of Wind Power on Low-Frequency Oscillation under Outward Transmitting Thermal Generated Power Bundled with Wind Power Typical Scene." Applied Mechanics and Materials 391 (September 2013): 271–76. http://dx.doi.org/10.4028/www.scientific.net/amm.391.271.

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Increasing penetration level of wind power integration has a significant impact on low-frequency oscillations of power systems. Based on PSD-BPA simulation software, time domain simulation analysis and eigenvalue analysis are employed to investigate its effect on power system low-frequency oscillation characteristic in an outward transmitting thermal generated power bundled with wind power illustrative power system. System damping enhances markedly and the risk of low-frequency oscillation reduce when the generation of wind farm increase. In addition, dynamic reactive power compensations apply to wind farm, and the simulation result indicates that it can improve dynamic stability and enhance the system damping.

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Zhang, Junjie, Lukas Razik, Sigurd Hofsmo Jakobsen, Salvatore D’Arco, and Andrea Benigni. "An Open-Source Many-Scenario Approach for Power System Dynamic Simulation on HPC Clusters." Electronics 10, no. 11 (June 1, 2021): 1330. http://dx.doi.org/10.3390/electronics10111330.

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In this paper we introduce an approach to accelerate many-scenario (i.e., hundreds to thousands) power system simulations which is based on a highly scalable and flexible open-source software environment. In this approach, the parallel execution of simulations follows the single program, multiple data (SPMD) paradigm, where the dynamic simulation program is executed in parallel and takes different inputs to generate different scenarios. The power system is modeled using an existing Modelica library and compiled to a simulation executable using the OpenModelica Compiler. Furthermore, the parallel simulation is performed with the aid of a message-passing interface (MPI) and the approach includes dynamic workload balancing. Finally, benchmarks with the simulation environment are performed on high-performance computing (HPC) clusters with four test cases. The results show high scalability and a considerable parallel speedup of the proposed approach in the simulation of all scenarios.

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Chen, Ying, and Xiang Jie Chen. "Current Detection Simulate for STATCOM Dynamic Compensation System." Key Engineering Materials 439-440 (June 2010): 378–83. http://dx.doi.org/10.4028/www.scientific.net/kem.439-440.378.

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In view of low-pressure area for dynamic reactive power compensation device application present situation, a more advanced static reactive power compensation techniques was proposed that is STATCOM (Static Synchronous Compensator-STATCOM) which based on the modern power electronic technology, and it applied to the low-voltage dynamic reactive power compensation area, developed a new and more advanced low-voltage dynamic reactive power compensation device. In this paper, STATCOM compensation system simulation model was established in MATLAB6.5, futher to study its real-time compensation. Theory analyze and simulation results indicate that compare with static capacitor compensation，dynamic compensation achieved zero phase angle between power source current and voltage on rating frequency，demand for power supply rating power is reduced and power transmission performance is ensured.

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Gwon, Han Na, and Kyung Soo Kook. "Dynamic-Model-Based AGC Frequency Control Simulation Method for Korean Power System." Energies 13, no. 19 (September 25, 2020): 5052. http://dx.doi.org/10.3390/en13195052.

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To fulfill the need of operating power systems more effectively through diverse resources, frequency control conditions for maintaining a balance between generators and loads need to be provided accurately. As frequency control is generally achieved via the governor responses from local generators and the automatic generation control (AGC) frequency control of the central energy management system, it is important to coordinate these two mechanisms of frequency control efficiently. This paper proposes a dynamic-model-based AGC frequency control simulation method that can be designed and analyzed using the governor responses of generators, which are represented through dynamic models in the planning stage. In the proposed simulation model, the mechanism of the AGC frequency control is implemented based on the dynamic models of the power system, including governors and generators; hence, frequency responses from the governors and AGC can be sequentially simulated to coordinate and operate these two mechanisms efficiently. The effectiveness of the proposed model is verified by simulating the AGC frequency control of the Korean power system and analyzing the coordination effect of the frequency responses from the governors and AGC.

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Yi, Feng Yan, Rong Chun Guo, and Mei Zhi Xie. "Simulation of Isolation Performance of Hydraulic Suspension System." Advanced Materials Research 668 (March 2013): 433–36. http://dx.doi.org/10.4028/www.scientific.net/amr.668.433.

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This paper takes the power-train of domestic a light-duty bus and its hydraulic damped mounting system as the study object. Firstly, based on the analysis of hydraulic mount's structure, working Principle and ideal dynamic characteristics, its dynamic characteristics test results of hydraulic suspension are obtained. And then using MATLAB software calculates simulation of the dynamics characteristic of the hydraulic mount system. Comparing simulation results with the testing results, they are consistent well. So the simulation model is accurate, and it provides a simplified model theory for actual study, and this simplified model is more easily available.

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Liu, Jian Tao, Chen Long Li, and Ke Wang. "Study of the Emergency DC Power Support Strategy Based on the Principles of the Generalized Dynamics." Advanced Materials Research 732-733 (August 2013): 719–25. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.719.

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Emergency HVDC power support (EDCPS) can be used for improving the transient stability of AC/DC power systems, but the effect is directly determined by the quantity, the starting time, the speed and other factors of the power support. In this article, the dynamic characteristics of AC/DC power systems after a fault are analyzed, generalized dynamical models of the AC/DC power system are established, the relationship between the duration and the quantity of the EDCPS and the dynamic characteristics of the system are established based on the impulse theorem, then the EDCPS strategy besed on the principles of the generalized dynamics is proposed. At last, it is verified by examples of simulation that the strategy can effectively improve the stability of the AC/DC power systems after a fault.

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Yan, Qun Min, and Juan Juan Zhu. "Design and Simulation Analysis of Aircraft Dynamic System." Advanced Materials Research 314-316 (August 2011): 511–17. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.511.

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Aircraft dynamic systems digital simulation platform modeling was construct based on engineering needs and provide the basis of experimental data. Combined with dynamic system characteristics and saber software characteristics .In the Saber simulation software, used the schematic-based, based on functional requirements and the modeling method based on experimental data to establish a dynamic system of different parts of the device model, and according to different modeling methods established by the electrical load model and control model of power systems consisting of mixed-signal model. Finally, experimental verification of the whole system model, simulation results compared with the experimental results prove the accuracy of the system model, effective and practical.

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Chen, Danfeng, and Cong Wang. "Prediction of Period-Doubling Bifurcation Based on Dynamic Recognition and Its Application to Power Systems." International Journal of Bifurcation and Chaos 26, no. 09 (August 2016): 1650157. http://dx.doi.org/10.1142/s0218127416501571.

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In this paper, a bifurcation prediction approach is proposed based on dynamic recognition and further applied to predict the period-doubling bifurcation (PDB) of power systems. Firstly, modeling of the internal dynamics of nonlinear systems is obtained through deterministic learning (DL), and the modeling results are applied for constructing the dynamic training pattern database. Specifically, training patterns are chosen according to the hierarchical structured knowledge representation based on the qualitative property of dynamical systems, which is capable of arranging the dynamical models into a specific order in the pattern database. Then, a dynamic recognition-based bifurcation prediction approach is suggested. As a result, perturbations implying PDB on the testing patterns can be predicted through the minimum dynamic error between the training patterns and testing patterns by recalling the knowledge restored in the pattern database. Finally, the second-order single-machine to infinite bus power system model is introduced to check the effectiveness of this prediction approach, which implies PDB under small periodic parameter perturbations. The key point that determines the prediction effect mainly lies in two methods: (1) accurate approximation of the unknown system dynamics through DL guarantees the feasibility of the prediction process; (2) the qualitative property of PDB and the generalization ability of DL algorithm ensure the validity of the selected training patterns. Simulations are included to illustrate the effectiveness of the proposed approach.

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Wang, Chun Guo, Rui Yu, and Ke Long Zhang. "Dynamic Simulation on Feedwater Heater of Nuclear Power Plant." Advanced Materials Research 591-593 (November 2012): 535–40. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.535.

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There is not only the flow of the single-phase fluid but also the mixed-flow of the gas-liquid fluid in the system. So, it is very necessary to study its operational characteristics. In this study, the low pressure heaters (LP heaters) in the feedwater system are simulated. Firstly, the models are built using the simulation software JTopmeret and debugged on the simulation platform SimExec. The results are then compared with the design parameters. Finally, the comparison results are analyzed. The simulation results show that the operation parameters of the simulation models are consistent with the design parameters of the system, which proves that the simulation models of the LP heaters are correct. Thus, the simulation is able to provide guidance for the operation analysis, the equipment optimization and the system debugging of the feedwater system.

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Song, Chong-Suk, Gil-Soo Jang, and Chang-Hyun Park. "Visualization of Dynamic Simulation Data for Power System Stability Assessment." Journal of Electrical Engineering and Technology 6, no. 4 (July 1, 2011): 484–92. http://dx.doi.org/10.5370/jeet.2011.6.4.484.

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Ravikiran, T. "Simulation and Analysis of Adaptive Power System Type Dynamic Loads." International Journal for Research in Applied Science and Engineering Technology 6, no. 3 (March 31, 2018): 85–93. http://dx.doi.org/10.22214/ijraset.2018.3014.

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Roytelman, I., and S. M. Shahidehpour. "A comprehensive long term dynamic simulation for power system recovery." IEEE Transactions on Power Systems 9, no. 3 (1994): 1427–33. http://dx.doi.org/10.1109/59.336121.

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Henrion, Thibault, Karl Ponweiser, Dirk Band, and Thomas Telgen. "Dynamic simulation of a solar power plant steam generation system." Simulation Modelling Practice and Theory 33 (April 2013): 2–17. http://dx.doi.org/10.1016/j.simpat.2011.12.009.

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Suzuki, Shirou, Kenichi Kawata, Masahiro Sekoguchi, and Masuo Goto. "Combined Cycle Plant Model for Power System Dynamic Simulation Study." IEEJ Transactions on Power and Energy 120, no. 8-9 (2000): 1146–52. http://dx.doi.org/10.1541/ieejpes1990.120.8-9_1146.

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Zhang, Wen Chao, Xue Ping Gu, Hai Ping Liang, Yu Qia Hao, and Sai Wang. "Speed Control System Model Parameter Error Evaluation Based on PMU Data." Advanced Materials Research 1070-1072 (December 2014): 880–87. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.880.

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Power system dynamic simulation is an effective way to fully grasp the power system dynamic response, and it is also the basis guiding power system planning, design and operation. The operation of the generator characteristics determines the dynamic characteristics of the power system to some extent, so enhancing the accuracy of generating set model parameters has great significance on improving the reliability of power system dynamic simulation. Due to the operation of the power system characteristics and special requirements on the safe and stable operation, we cannot understand its correctness of dynamic response by means of exerting disturbance test, which limits the simulation error evaluation work of the generating set. PMU data from effective disturbance scenarios is used in this paper to study the realization of the generator speed control system of hybrid simulation technology based on data measured by PMU. The corresponding hybrid simulation program is developed by using C++. The evaluation of speed regulation system error of the model parameters is realized on the basis of the simulation error index. The validity of speed control system model parameter error evaluation methods is proved by PMU data measured from disturbance scenarios of four Units in an area.

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Liu, Hao Ming, Fang Fang Zhu, and Ke Lin Yang. "Time-Domain Simulation of Power System Frequency Fluctuations Caused by Intermittent Wind Power." Applied Mechanics and Materials 441 (December 2013): 304–11. http://dx.doi.org/10.4028/www.scientific.net/amm.441.304.

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Wind power is uncertain. When the proportion of wind power capacity is large, the impact of the randomness of the output power on the grid frequency is more significant. Aiming at system stability influence after integrating a high capacity of wind turbines, this paper introduces the dynamic simulation model for electric power system with wind power, and makes an equivalent transformation processing for the wind turbine and generator. By using improved Euler method, this paper analyzes the impact of system frequency through time-domain simulation when disturbance occurs at wind farm side. Simulation results show that when wind speed changes, the established model and algorithm can effectively simulate the dynamic response of the frequency, and also these results can provide a reference for the frequency stability when wind turbines integrate into power system.

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Kang, Ying Wei, Wei Huang, Yang Xue, Guang Yi Cao, and Heng Yong Tu. "Dynamic Simulation of a Solid Oxide Fuel Cell System for Micro Combined Heat and Power Application." Applied Mechanics and Materials 336-338 (July 2013): 695–99. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.695.

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In the past decade, developing solid oxide fuel cell (SOFC) systems for micro combined heat and power applications (micro-CHP, 1-10 kWe) is one of the hot spots in the world energy field. To meet the requirements for system optimization and control design of SOFC micro-CHP systems, in this paper a dynamic model of an SOFC micro-CHP system is developed, based on which dynamic simulations are also carried out. Simulation results show that the present model can reflect the behavior of the SOFC micro-CHP system quite well; the influence of one component on another is an important factor to determine system dynamic behavior; as the system comprises many components and concerns different physical and chemical processes, it has dynamic processes with several kinds of time scales; for the air preheating need, the heat-exchange area of air pre-heater is quite big, which leads to its big thermal inertia, and causes the dynamic process lasting for several ten thousands of seconds.

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Hua, Ze Jia, Jing Wu, Ze Ya Mi, and Jia Lei Zhu. "Simulation of PV and Wind Hybrid Power System." Advanced Materials Research 953-954 (June 2014): 591–94. http://dx.doi.org/10.4028/www.scientific.net/amr.953-954.591.

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The PV and wind hybrid power system uses the front-end DC-DC conversion circuit, the system's overall output power is unified deployment and controlled, through elaborating the component characteristics and assessing mathematical model of the actual obtained, more accurately determines operation condition of the system per hour. The system energy analysis of flow and motion makes the system in dynamic change switch from the different forms of work patterns and operation, completing the corresponding control, so as to realize the optimization of system and reliable operation.

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Chen, Po-Tuan, Cheng-Jung Yang, and Kuohsiu David Huang. "Dynamic Simulation and Control of a New Parallel Hybrid Power System." Applied Sciences 10, no. 16 (August 7, 2020): 5467. http://dx.doi.org/10.3390/app10165467.

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To avoid unnecessary power loss during switching between the various power sources of a composite electric vehicle while achieving smooth operation, this study focuses on the development and dynamic simulation analysis of a control system for the power of a parallel composite vehicle. This system includes a power integration and distribution mechanism, which enables the two power sources of the internal combustion engine and electric motor to operate independently or in coordination to meet the different power-output requirements. The integration of the electric motor and battery-charging engine reduces the system complexity. To verify the working efficiency of the energy control strategy for the power system, the NEDC2000 cycle is used for the vehicle driving test, a fuzzy logic controller is established using Matlab/Simulink, and the speed and torque analysis of the components related to power system performance are conducted. Through a dynamic simulation, it is revealed that this fuzzy logic controller can adjust the two power sources (the motor and internal combustion engine) appropriately. The internal combustion engine can be maintained in the optimal operating region with low, medium, and high driving speeds.

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Saidi, Abdelaziz Salah. "Impact of large photovoltaic power penetration on the voltage regulation and dynamic performance of the Tunisian power system." Energy Exploration & Exploitation 38, no. 5 (July 22, 2020): 1774–809. http://dx.doi.org/10.1177/0144598720940864.

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By the year 2023, the Tunisian power transmission grid has been projected to include photovoltaic pool of power of 937 MW, scattered throughout the whole landscape of the nation. This paper investigates high photovoltaic energy penetration impacts voltage regulation and dynamic performance of the grid. Load flow analysis is implemented to investigate the power system capability for the case of incorporating the desired photovoltaic power. Computer-based simulations have been used for evaluating the upgradation of the grid. Moreover, the study is based on bifurcation diagrams taking the photovoltaic generation as a bifurcation parameter and time response simulations to grid disturbances. Professional PSAT simulation toolbox has been used for the power flow simulation studies. Network- related faults like outage of photovoltaic farm event, three-phase short-circuit at a conventional bus, and voltage dip at the largest photovoltaic station have been considered. It is hoped that the results of the presented study would benefit Tunisian’s utility’s policies on integration of PV systems. Moreover, this comprehensive analysis and study will be a valuable guide for assessing and improving the performance of national grid systems of any other countries also, that gives the huge potential and need for solar energy penetration into the grid systems.

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Wang, Zhen Bo, Cui Ming Lu, Hai Zhu Huang, Shu Zhi Li, and Liang Zhang. "Analysis and Simulation System of Vehicle Dynamic Performance." Applied Mechanics and Materials 494-495 (February 2014): 146–49. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.146.

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It is difficult to measure the dynamic characteristic accurately. In the traditional simulation system, some parameters about dynamic characteristic usually are neglected. Aiming to the key problem, this paper presents a simulation calculation method to calculate the engine output power which considers the unstable condition of the actual running. According to the vehicle dynamic equation and actual running conditions of the vehicle, the mathematical model of dynamic characteristic is established. The vehicle dynamic simulation system is developed using the VC++6.0. Measurement experiment of dynamic characteristic of Hover H6 is performed. The experimental results agree well with the simulation results. This indicates that this method can accurately calculate the vehicle dynamic parameters and provide for scientific basis on the vehicle design.

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Zhang, Wei, Weifeng Shi, and Jinbao Zhuo. "Shipboard Power System Stabilizer Optimization Using GA and QPSO Algorithm." International Journal of Computational Intelligence and Applications 16, no. 03 (September 2017): 1750015. http://dx.doi.org/10.1142/s1469026817500158.

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In order to improve shipboard power system dynamic stability, two bio-inspired algorithms, the genetic algorithm (GA) and quantum-behaved particle swarm optimization (QPSO), method are proposed for the shipboard power system stabilizer (PSS) optimization. The proposed PSS optimization method is inspired by a hybrid-coordinated stabilizer for diesel engine generator and the bio-inspired algorithm. The simulations are conducted under load change disturbance and short-circuit fault case for the marine generator with/without the diesel engine speed governor. Simulation results show that the quantum particle swarm optimize strategy could improve the dynamic performance of the marine generator better than the GA method. The dynamic performance for shipboard power system always indicates the effectiveness, feasibility and robustness of the proposed approach.

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Sebastián, Rafael. "Review on Dynamic Simulation of Wind Diesel Isolated Microgrids." Energies 14, no. 7 (March 24, 2021): 1812. http://dx.doi.org/10.3390/en14071812.

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Wind diesel isolated microgrids (WDIMs) combine wind turbine generators (WTGs) with diesel generators (DGs) to supply electricity to remote consumers. WDIMs are low-inertia isolated power systems where large system frequency and voltage variations occur. WDIM dynamic modeling allows short-term simulations to be performed and detailed electrical variable transients to be obtained so that the WDIM power quality and stability can be tested. This paper presents a literature review about WDIM dynamic simulation. The review classifies articles according to factors such as the different WDIM operation modes (diesel only, wind–diesel and wind only) simulated, the types of WTGs used in the WDIM (constant- and variable-speed types), or the use of different short-term energy storage technologies (batteries, ultracapacitors, flywheels) to improve the WDIM power quality, stability and reliability. Papers about the dynamic simulation of related isolated microgrids are also reviewed. Finally, as an example of WDIM dynamic simulation, a WDIM with one WTG, one DG, load and a discrete dump load (DL) is modeled and simulated. The WDIM response to variations of wind speed and load consumption is shown by graphs of the main electrical variables. The simulations show how the DL is used to improve the WDIM stability and reliability.

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Demić, Miroslav, and Danijela Miloradović. "Numerical simulation of thermal loads of the truck’s power train mounting system due to vibrations." Journal of Low Frequency Noise, Vibration and Active Control 37, no. 4 (March 27, 2018): 911–27. http://dx.doi.org/10.1177/1461348418765965.

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Dynamic simulation based on modelling has a significant role during a vehicle development process. It is especially important in the first design stages, when relevant parameters are to be defined. Power train mounting system is exposed to thermal loads which can lead to damage and degradation of its characteristics. Therefore, this paper aims to analyse conversion of mechanical work into heat energy in power train mounting system using a method of dynamic simulation. Considering the presence of classic–mechanical and hydraulic power train mounting systems in modern trucks, analysis of power train mounting thermal loads of FAP 1213 vehicle was conducted. Thermal loads of vehicle power train mounts were calculated by dynamic simulation, while their cooling process was not analysed.

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Chen, Bin, Hong Tao Wang, Zhong Kang Wei, and Chun Yi Wang. "Sustained Overvoltage Control Considering Power System Restoration Dynamic Process." Advanced Materials Research 986-987 (July 2014): 577–80. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.577.

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Changeable sensitivity and safety margin are proposed in this paper, which can avoid the voltage violation according to the operation of the current situation. A simulation test is presented to demonstrate the proposed method can decrease adjusting amounts and restoration time efficiently.

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Setiadi, Herlambang, and Karl O Jones. "Power System Design using Firefly Algorithm for Dynamic Stability Enhancement." Indonesian Journal of Electrical Engineering and Computer Science 1, no. 3 (March 1, 2016): 446. http://dx.doi.org/10.11591/ijeecs.v1.i3.pp446-455.

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<p>Utilising additional devices in power systems have been developed by industry. Devices such as a Power System Stabilizer (PSS) and a Superconducting Magnetic Energy Storage (SMES) are commonly employed in industry. This work investigated the coordination of a PSS and SMES applied to a power system to enhance dynamic stability. To obtain optimal coordination, the parameters of the PSS and SMES are tuned using the Firefly Algorithm (FA). The simulation of the power system, PSS, and SMES has been performed using MATLAB and Simulink, and the FA run in Matlab. For testing the small signal stability, the eigenvalue of the system will be investigated, while for dynamic stability the system will be given an external disturbance. The rotor angle and frequency deviation of the power system are compared without a controller, with a PSS and SMES included, and with the PSS and SMES tuned by FA. The simulation results show that the proposed system can improve not only small signal stability (steady state stability) but also dynamic stability.</p>

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Hansen, Anca D., Poul Sørensen, Florin Iov, and Frede Blaabjerg. "Initialisation of Grid-Connected Wind Turbine Models in Power-System Simulations." Wind Engineering 27, no. 1 (February 2003): 21–38. http://dx.doi.org/10.1260/030952403321833734.

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This paper describes a method of initialising dynamic wind turbine models in power-system simulations. The method uses grid-status information to initialise the grid-connected wind turbine model. The goal is to start a power-system simulation in a stationary state, without unnecessary transient behaviour at the beginning of the simulation. Correct initialisation is necessary to reach quickly the steady state of the grid-connected wind turbine, before a real transient on the grid occurs. Consequently, the dynamic performance of the system can be independently and accurately evaluated. The method presented considers wind turbines with directly grid-connected induction generators, with constant or variable blade angle (passive stall control, blade angle control or active stall control). These aspects apply to both constant and variable speed wind turbines. The investigation is performed in the commercial dedicated power-system simulation-tool DIgSILENT. Attention is especially drawn to the initialisation of the non-electrical parts of the wind turbine. The suitability of this initialisation strategy is illustrated by an example.

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Nhan, TRAN Huu, NGUYEN Ngoc Thanh, VO Ba Khanh Trinh, and NGUYEN Van Nguyen. "Dynamic analysis of small gasoline car model powertrain using MATLAB / SIMDRIVELINE." Science & Technology Development Journal - Engineering and Technology 3, SI2 (April 15, 2021): first. http://dx.doi.org/10.32508/stdjet.v3isi2.575.

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The powertrain model of a vehicle using a small gasoline engine is designed based on the analysis results of the Matlab/Simdriveline simulation model. In which, the vehicle's powertrain model parts include: engine, clutch, gearbox, differential and wheels, and overall vehicle modeled by Matlab/ Simdriveline. Mathematical basis of the corresponding models for systems or components are used to build simulated models for the entire vehicle's powertrain system. The input parameters for the simulation problem include parameters of the size, mass, structural and technical parameters of each system such as transmission ratio, power, velocity, efficiency, determined based on actual vehicle model and empirical calculations. The simulation calculation process is done on the basis of the variation of the engine power, from which, the corresponding input and output kinetic and dynamic parameters of each system in the powertrain system consists of clutch, gearbox, differential, are obtained in the time domain. The results of simulation calculation of the kinematics and dynamics of each system in the vehicle's powertrain are analyzed as a basis for design improvement to improve the dynamic performance of the vehicle model.

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Zhang, Wei, Bei Bei Sun, and Xiao Bo Kang. "Modeling and Analysis of Main Drive Train in a Power-Driven Turret." Advanced Materials Research 139-141 (October 2010): 943–46. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.943.

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This work investigates dynamics of a three-stage gear system in a new power-driven turret. This paper mainly consists to develop two kinds of dynamic models of the main drive train. One is the dynamic contact model of the gear system to calculate the dynamic meshing forces and the tooth root stresses. The other is a virtual prototype model adequately incorporating the deformability of the bearings to analyze the dynamical response. The dynamic meshing force and the tooth root stress were compared with the theoretically calculated results. The vibration acceleration signals of the turret were gathered by tests. According to the experimental data, the simulation results of the virtual prototype model were given based on which the rationality of the virtual prototype model is verified.

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Ristic, Olga, Bratislav Iricanin, and Vladica Mijailovic. "Dynamic modeling and simulation of power transformer maintenance costs." Serbian Journal of Electrical Engineering 13, no. 2 (2016): 285–99. http://dx.doi.org/10.2298/sjee1602285r.

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The paper presents the dynamic model of maintenance costs of the power transformer functional components. Reliability is modeled combining the exponential and Weibull's distribution. The simulation was performed with the aim of corrective maintenance and installation of the continuous monitoring system of the most critical components. Simulation Dynamic System (SDS) method and VENSIM PLE software was used to simulate the cost. In this way, significant savings in maintenance costs will be achieved with a small initial investment.

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Wang, Hong, and Feng Chun Sun. "Dynamic Modeling and Simulation on a Hybrid Power System for Dual-Motor-Drive Electric Tracked Bulldozer." Applied Mechanics and Materials 494-495 (February 2014): 229–33. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.229.

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Hybrid power systems provide high-performances and high-efficiency power for electric bulldozer. This paper firstly constructs the mathematical model of driving motors system based on the design of dual-motor-driving propulsion system for bulldozer. Secondly, by using the setting values from a bulldozer, simulation work is implemented, and parameters of the hybrid power system are matched, and finally, based on MATLAB/Simulink ,dynamic models for the dual-motor-driving hybrid power system is established, and the simulation results are discussed. Simulation results demonstrate the validity of the hybrid power system model and the matching of the parameters of the hybrid power system is reasonable.

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Chen, JinBo, and WenYu Hu. "MATLAB Simulation Research on Static Var Compensator." E3S Web of Conferences 256 (2021): 01022. http://dx.doi.org/10.1051/e3sconf/202125601022.

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TCR-TSC static reactive power compensator (SVC) is the most widely used in the field of power system reactive power compensation. This type of reactive power compensator can not only compensate the reactive power required in the power system, but also handle the over-compensation problem well. This paper will establish a MATLAB simulation model to simulate the TCR-TSC SVC, focusing on the dynamic reactive power compensation characteristics of the TCR-TSC SVC in suppressing voltage fluctuations. The simulation results show that the TCR-TSC SVC has a better dynamic reactive power compensation effect.

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Nakadomari, Akito, Ryo Miyara, Talal Alharbi, Natarajan Prabaharan, Shriram Srinivasarangan Rangarajan, Edward Randolph Collins, and Tomonobu Senjyu. "Dynamic Voltage Stability Assessment in Remote Island Power System with Renewable Energy Resources and Virtual Synchronous Generator." Energies 14, no. 18 (September 16, 2021): 5851. http://dx.doi.org/10.3390/en14185851.

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Increasing the proportion of renewable energy generations in remote island power systems is becoming essential for realizing decarbonized society. However, since inverter-connected renewable energies have different generation characteristics from conventional generators, the massive penetration can adversely affect system stability. In particular, fault events in such weak remote systems can cause fast voltage collapse, and there is a need to assess dynamic voltage stability. This study attempts dynamic voltage stability assessment using the critical boundary index (CBI) and investigates the impact of the virtual synchronous generator (VSG) on dynamic voltage stability. A remote island power system and VSG are modeled, and time-domain simulations are conducted with case studies of fault events. The simulation results show the potential of CBI to use for dynamic voltage stability assessment. Furthermore, the VSG can provide suitable power output during fault events and improve dynamic voltage stability.

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Journal articles on the topic 'Dynamic simulation of power system'

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