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Research on Coordinated Control of Photovoltaic System Based on VSC-HVDC

机译：基于VSC-HVDC的光伏系统协调控制研究

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The combination of photovoltaic (PV) power generation and voltage source converter-based high voltage direct current (VSC-HVDC) system is one of the development directions of new energy power generation and its power transmission in the future. Power grid failure or maintenance will lead to power outage. In order to reduce the economic loss caused by this, the PV-VSC-HVDC coordinated control system is used to continuously supply power to loads in island state to maintain its normal operation. By analyzing the mechanism and cause of the islanding effect, a coordinated control strategy suitable to PV-VSC-HVDC system is proposed. Finally, a PV-VSC-HVDC grid-connected system was built based on Matlab/Simulink, and a detailed simulation analysis of the operating characteristics of the system is made. The simulation results show that this control strategy can realize the smooth switch from grid-connected state to island state, ensuring the stable operation of the loads and reducing the economic loss caused by power failure.
机译：光伏发电与基于电压源换流器的高压直流电（VSC-HVDC）系统的结合，是未来新能源发电及其输电的发展方向之一。电网故障或维护将导致停电。为了减少由此造成的经济损失，PV-VSC-HVDC协调控制系统用于为孤岛状态的负载连续供电，以维持其正常运行。通过分析孤岛效应的机理和原因，提出了一种适用于PV-VSC-HVDC系统的协调控制策略。最后，基于Matlab / Simulink建立了PV-VSC-HVDC并网系统，并对系统的运行特性进行了详细的仿真分析。仿真结果表明，该控制策略可以实现从并网状态到孤岛状态的平稳切换，保证了负载的稳定运行，减少了因停电而造成的经济损失。

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