电力系统自动化2011，Vol.35Issue(8)：97-102,107,7.
高压直流输电系统阀短路保护动作特性分析
Operation Characteristics Analysis for Valve Short-circuit Protection in HVDC System
张颖 1邰能灵 1徐斌2
作者信息
- 1. 上海交通大学电子信息与电气工程学院,上海市,200240
- 2. 南瑞继保电气有限公司,江苏省南京市,211100
- 折叠
摘要
Abstract
Valve short-circuit protection is the primary protection for high voltage direct current (HVDC) converters. The fault current is analyzed and calculated when the valve short-circuit faults happen at rectifier side and inverter side respectively. The result shows that the fault current in case of inverter side failure is much less than that of rectifier side. Based on it, the operation equation for valve short-circuit protection is analyzed. It is disclosed that the valve short-circuit protection for the inverter side may fail to trip due to the comparatively little fault current and the impacts on the control system. On the other hand, due to the impacts of current transformer saturation and the difference between the transient characteristics for current transformer of each phase, the protection may mal-operate during unloaded converter transformer energized. The theoretical analysis is verified by numerous simulation tests with real time digital simulator (RTDS). The short-circuit protection configuration and setting suggestions are proposed to coordinate the contradiction between selectivity and sensitivity.关键词
高压直流输电系统/阀短路保护/动作特性/换流变压器空载充电Key words
high voltage direct current (HVDC) system/valve short-circuit protection/operation characteristics/unloaded converter transformer energized引用本文复制引用
张颖,邰能灵,徐斌..高压直流输电系统阀短路保护动作特性分析[J].电力系统自动化,2011,35(8):97-102,107,7.
