新能源场站接口VSC直流电压控制稳定性分析及改进控制策略OA
DC Voltage Stability Analysis and Improved Control Strategy of New Energy Station Interfaced VSC
新能源场站接口电压源换流器(VSC)需经长距离交流线路接入城区主网,造成二者连接强度薄弱,易引发VSC直流电压控制的失稳.为分析弱连接VSC的直流电压失稳机理,建立了适用于多种控制策略下的VSC并网系统直流电压稳定性分析模型,揭示了弱连接VSC运行点和控制环节交互对直流电压稳定性的影响机理,并设计了补偿频段灵活可变的直流电压稳定性提升控制策略.Matlab/Simulink环境下的仿真模型验证了所提研究内容的正确性.
Voltage source converter(VSC)working as the interface of new energy stations connects to urban main network with long-distance AC line,which results a weak grid connected condition and has a risk of DC voltage instability.To analyze the mechanism of DC voltage instability of weak grid connected VSC,a DC voltage stability analysis model for VSC grid connected systems applicable to various control strategies was established.The impact mechanism of the interaction between weak grid connected VSC operating points and control loops interaction on DC voltage stability was revealed.Then a DC voltage stability improvement control strategy was designed with the characteristic of compensation frequency range flexible and variable.The simulation model in Matlab/Simulink environment verified the correctness of the proposed research content.
赵伟程;马浩原;黄津明;曹鑫;柯行思
国网四川省电力公司营销服务中心,四川 成都 610041国网四川省电力公司营销服务中心,四川 成都 610041湖北瑞华科技工程管理有限公司,湖北 武汉 430070国网四川省电力公司营销服务中心,四川 成都 610041国网四川省电力公司营销服务中心,四川 成都 610041
信息技术与安全科学
弱连接VSC直流电压稳定性通用模型控制环节交互补偿控制
weak grid connected voltage source converter(VSC)DC voltage stabilitygeneral modelcontrol loops interactioncompensation control
《电气传动》 2026 (1)
12-20,9
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