多端直流输电系统机电暂态建模研究与实现  

Research and Realization of Electromechanical Transient Modeling of Multi-Terminal DC Transmission System

作　　者：赵利刚 洪潮 涂亮 张东辉 甄鸿越 曾勇刚 

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》2017年第7期26-31,共6页Southern Power System Technology

摘　　要：构建了不同类型换流器和多端直流线路组成的多端直流网络的等值电路,提出了多端直流输电系统中不同类型换流器的控制方式以及各换流站间控制方式的协调机制,建立了多端直流输电系统机电暂态仿真通用模型,并基于交直流电力系统计算分析软件DSP实现了该模型。通过算例系统将所建立的模型与PSCAD精确模型进行了对比,结果表明本文所建立的多端直流输电系统模型在扰动情况下的响应特性与PSCAD结果具有较好的一致性,验证了所建立模型的准确性。This paper builds equivalent circuit of multi-terminal DC network composed of different types of converters and multi-termi- nal DC lines, and proposes the control methods of different types of converters and the coordination mechanism of control modes a- mong converter stations in multi-terminal HVDC transmission systems. A general electromechanical transient model of multi-terminal DC transmission system is established, and the model is realized based on the AC/DC power system calculation and analysis software （DSP）. The results of the model is compared with PSCAD model through an example system. The comparison results show that the response characteristics of the established multi-terminal DC system model are in good agreement with that of the PSCAD model, and the accuracy of the model is verified.

关 键 词：多端直流 LCC换流器 VSC换流器 机电暂态 建模 

分 类 号：TM712[电气工程—电力系统及自动化]