电力系统自动化2016，Vol.40Issue(12)：151-157,199,8.DOI:10.7500/AEPS20150819005
模块化多电平换流器直流双极短路特性分析
Characteristic Analysis of Modular Multilevel Converter Under DC Pole-to-pole Short-circuit Fault
张国驹 1祁新春 2陈瑶 1亓丽 1岳程燕1
作者信息
- 1. ABB集团中国研究中心，北京市 100015
- 2. 北京建筑大学电气与信息工程学院，北京市 100044
- 折叠
摘要
Abstract
The characteristics analysis of the modular multilevel converter(MMC)under the DC pole-to-pole short-circuit fault is studied,which is an important issue in the research of fault management,electrical system design and MMC based power system planning.Firstly,the transient process before and after the PWM blocking of DC pole-to-pole short-circuit fault is analyzed,while the conduction over-lapping angle is defined.Secondly,four possible steady-state short-circuit current paths and seven cases according to different conduction over-lapping angles are identified.And the characteristics of steady-state current at both the AC and DC sides are qualitatively analyzed.Then the influences of the impedance distribution factor and equivalent short-circuit resistance on the steady-state short-circuit current are elaborated, while a practical engineering calculation method for the steady-state short-circuit currents at both AC and DC sides is deduced.Finally,the effectiveness of the analysing method is verified through the case study.关键词
模块化多电平换流器(MMC)/直流双极短路故障/短路计算/短路故障管理Key words
modular multilevel converter (MMC)/DC pole-to-pole short-circuit fault/short-circuit current calculation/short-circuit fault management引用本文复制引用
张国驹,祁新春,陈瑶,亓丽,岳程燕..模块化多电平换流器直流双极短路特性分析[J].电力系统自动化,2016,40(12):151-157,199,8.
