摘要
由电网换相换流器(Line commutated converter,LCC)与电压源型换流器(Voltage source converter,VSC)构成的混合直流电网有望成为未来直流网络中一种新的表现形式,针对混合直流电网中的各类型组成元件,提出了一种较为全面的混合直流电网机电暂态建模方法。首先分析了混合直流电网中的组成元件,并建立了各组成元件的机电暂态模型;随后分析了各类型换流器的控制系统模型;最终将所建立的机电暂态模型应用在四端混合直流电网算例仿真中,将3种工况下的机电暂态与电磁暂态仿真结果进行对比分析,验证了所提出的混合直流电网机电暂态建模方法的可行性。
The hybrid DC grid composed of the line commutated converter(LCC)and the voltage source converter(VSC)is expected to become a new manifestation of the future DC network.In view of the various types of components in the hybrid DC grid,a comprehensive electromechanical transient modeling method for hybrid DC grid is proposed.First,the components in the hybrid DC power grid are analyzed,and the electro-mechanical transient model of each component is established;then the control system models of various types of converters are analyzed;finally the established electromechanical transient model is applied to the four-terminal hybrid.In the simulation of the DC grid example,the electromechanical transient and electro-magnetic transient simulation results under three working conditions are compared and analyzed,and the feasibility of the proposed hybrid DC grid electromechanical transient modeling method is verified.
作者
徐攀腾
朱博
喻文翔
宋述波
李建勋
樊友平
XU Panteng;ZHU Bo;YU Wenxiang;SONG Shubo;LI Jianxun;FAN Youping(Guangzhou Bureau of China Southern Power Grid Co.,Ltd.,EHV Transmission Company,Guangzhou 510500;School of Electrical and Automation,Wuhan University,Wuhan 430072)
出处
《电气工程学报》
CSCD
2021年第3期54-61,69,共9页
Journal of Electrical Engineering
基金
国家重点研发计划资助项目(2016YFB0900903)。
