传统交流电网与高比例新能源电网连锁故障差异性分析  

Analysis of Cascading Failure Differences Between Traditional AC Power Grid and High-proportion New Energy Power Grid

作　　者：沈政委 孙华东 汤涌 仲悟之 王安斯 赵兵 徐式蕴 SHEN Zhengwei;SUN Huadong;TANG Yong;ZHONG Wuzhi;WANG Ansi;ZHAO Bing;XU Shiyun(State Key Laboratory of Power Grid Safety and Energy Conservation(China Electric Power Research Institute),Haidian District,Beijing 100192,China)

机构地区：[1]电网安全与节能国家重点实验室(中国电力科学研究院有限公司),北京市海淀区100192

出　　处：《电网技术》2021年第12期4641-4649,共9页Power System Technology

基　　金：中国电力科学研究院科技创新基金项目(XT83-21-009)。

摘　　要：新能源的强随机性、强不确定性及电力电子装备的弱抗扰动能力等特性使得高比例新能源电网的连锁故障演化过程更加复杂,现有基于传统交流电网而来的连锁故障相关理论与方法在高比例新能源电网中的适用性有待商榷。以美加大停电与英国“8.9”大停电事故作为切入点,从连锁演化主导推动因素、演化时间、事故发生概率、电气特性等方面分析传统交流电网与高比例新能源电网在连锁故障问题上的差异性,并基于IEEE39节点系统在PSD-BPA与MATLAB中展开算例分析。The strong randomness and uncertainty of new energy and the weak anti-disturbance ability of power electronic equipment make the cascading failure evolution process of a high proportion of new energy grids more complicated.The applicability of the existing theories and methods of cascading failures based on the traditional AC power grid in the high proportion of new energy grid needs to be discussed.This paper takes the blackout in the USA and Canada and the"August 9th"blackout in the UK as the breakthrough point,this paper analyzes the differences between the traditional AC power grid and the high proportion new energy power grid in terms of the dominant driving factors of the chain evolution,the evolution time,the accident probability,the electrical characteristics,and so on.The calculation example analysis is carried out in the PSD-BPA and the MATLAB based on the IEEE 39 bus system..

关 键 词：交流电网 高比例新能源 连锁故障 大停电 

分 类 号：TM721[电气工程—电力系统及自动化]