直流系统机电暂态通用化建模技术  

Generalized Modeling Technology in Electromechanical Transient Simulation of DC System

作　　者：赵利刚 洪潮 甄鸿越 周挺辉 王长香 黄冠标 张野 ZHAO Ligang;HONG Chao;ZHEN Hongyue;ZHOU Tinghui;WANG Changxiang;HUANG Guanbiao;ZHANG Ye(State Key Laboratory of HVDC,Electric Power Research Institute,CSG,Guangzhou 510663,China)

机构地区：[1]直流输电技术国家重点实验室(南方电网科学研究院),广州510663

出　　处：《南方电网技术》2021年第9期1-8,共8页Southern Power System Technology

摘　　要：将交直流大电网的机电暂态仿真分为交流网络和直流网络。参考交流网络的建模方法,将全部直流输电系统作为直流网络进行统一建模仿真,将直流输电系统建模由嵌入交流系统的元件扩展到直流网络的维度,交直流网络在换流母线处进行信息交互。通过建立LCC换流节点、VSC换流节点、直流负荷、直流线路等的数学模型,详细说明了直流网络方程的建立及求解方法,通过算例系统对所提出方法进行仿真计算,结果表明,所提方法能够有效适应多种不同类型的直流输电形式。The article divides the electromechanical transient simulation of large AC and DC power grids into AC network and DC network.With reference to the modeling method of AC network,all DC transmission systems are processed as a DC network for unified modeling and simulation.The modeling of the DC transmission system is extended from the components embedded in the AC system to the dimension of the DC network.The AC and DC networks exchange information at the commutation buses.Through the establishment of mathematical models of LCC commutation nodes,VSC commutation nodes,DC loads,DC lines,etc.,the formation and solution methods of the DC network equations are explained in detail.The proposed method is simulated through the example system.The results show that,the proposed method can effectively adapt to many different types of HVDC power transmission forms.

关 键 词：直流网络 交流网络 机电暂态 通用建模 

分 类 号：TM711[电气工程—电力系统及自动化]