Keywords
Decoupling control
Feedforward decoupling
Submitted : 2024-07-14
Accepted : 2024-07-29
Published : 2024-08-13
Abstract
Voltage Source Converter-based High Voltage Direct Current (VSC-HVDC) transmission technology represents a groundbreaking approach in high voltage Direct Current (DC) transmission, offering numerous technical advantages and broad application prospects. However, in the d-q synchronous rotating coordinate system, the VSC-HVDC exhibits the coupling effect of active power and reactive power, so it needs to be decoupled. This paper introduces the basic principle and mathematical model of the VSC-HVDC transmission system. Through the combination of coordinate transformation and variable substitution, a feedforward decoupling control method is derived. Then the VSC-HVDC simulation model is designed, and the simulation analysis is carried out in the MATLAB environment. The simulation results demonstrate that the method effectively achieves decoupling control of active and reactive power, exhibiting superior dynamic performance and robustness. These findings validate the correctness and effectiveness of the control strategy.
References
Abedin T, Lipu MSH, Hannan MA, et al., 2021, Dynamic Modeling of HVDC for Power System Stability Assessment: A Review, Issues, and Recommendations. Energies, 14(16): 4829–4829.
Garciarivas RS, Gonzalez DR, Navarro JA, et al., 2021, VSC-HVDC and its Applications for Black Start Restoration Processes. Applied Sciences, 11(12): 5648–5648.
Li B, He J, Li Y, et al., 2019, A Review of the Protection for the Multi-Terminal VSC-HVDC Grid. Protection and Control of Modern Power Systems, 4(1): 1–11.
Wu X, Xu Z, Zhang Z, 2021, Power Stability Analysis and Evaluation Criteria of Dual-Infeed HVDC with LCC-HVDC and VSC-HVDC. Applied Sciences, 11(13): 5847–5847.
Sultan YA, Kaddah SS, Eladl AA, 2021, VSC-HVDC System-Based on Model Predictive Control Integrated with Offshore Wind Farms. IET Renewable Power Generation, 15(6): 1315–1330.
Karami E, Gharehpetian BG, Mohammadpour H, et al., 2020, Generalised Representation of Multi-Terminal VSC-HVDC Systems for AC-DC Power Flow Studies. IET Energy Systems Integration, 2(1): 50–58.
Xing C, Liu M, He X, et al., 2019, Research on Flexible Control Technology of HVDC. 2019 IEEE 8th International Conference on Advanced Power System Automation and Protection (APAP), Xi’an, China, 2019: 1186–1190.
Gomis-Bellmunt O, Sau-Bassols J, Prieto-Araujo E, et al., 2020, Flexible Converters for Meshed HVDC Grids: From Flexible AC Transmission Systems (FACTS) to Flexible DC Grids. IEEE Transactions on Power Delivery, 35(1): 2–15.
Chen Y, Moreno R, Strbac G, et al., 2018, Coordination Strategies for Securing AC/DC Flexible Transmission Networks with Renewables. IEEE Transactions on Power Systems, 33(6): 6309–6320.
Peng FZ, 2017, Flexible AC Transmission Systems (FACTS) and Resilient AC Distribution Systems (RACDS) in Smart Grid. Proceedings of the IEEE, 105(11): 2099–2115.
Maza-Ortega JM, Acha E, Garcia S, et al., 2017, Overview of Power Electronics Technology and Applications in Power Generation Transmission and Distribution. Journal of Modern Power Systems and Clean Energy, 5(4): 499–514.
Davari M, Mohamed YARI, 2016, Dynamics and Robust Control of a Grid-Connected VSC in Multiterminal DC Grids Considering the Instantaneous Power of DC- and AC-Side Filters and DC Grid Uncertainty. IEEE Transactions on Power Electronics, 31(3): 1942–1958.
Kalari PY, Geetha RS, 2016, Performance Analysis of Paralleled VSC-HVDC Systems. 2016 International Conference on Microelectronics, Computing and Communications (MicroCom), Durgapur, India, 2016: 1–6.
Rong M, Wu T, Li X, et al., 2020, Research on Grid Connection of Wind Farms Based on VSC-HVDC System. 12th IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), Nanjing, China, 2020: 1–5.