电力系统自动化Issue(15)：154-159,6.DOI:10.7500/AEPS20140721011
同杆双回线下接地距离保护Ⅰ段动作边界计算与仿真测试
Calculation and Simulation Test of Trip Boundary of Zone Ⅰ of Earth-fault Distance Protection for Double-circuit Transmission Lines on the Same Tower
邹晓峰 1曾平 1倪腊琴2
作者信息
- 1. 国网上海市电力公司电力科学研究院，上海市 200437
- 2. 华东电网有限公司，上海市 200002
- 折叠
摘要
Abstract
Double-circuit transmission lines on the same tower are widely applied recently bringing challenges to operation and value setting due to errors in earth-fault distance protection.Through calculation of measured impedance and trip boundary of zone Ⅰ of earth-fault distance protection in the double-circuit normal operation mode,single line operation mode and single side operation mode,the factors influencing trip boundary of zone Ⅰ of distance protection magnitude of errors are analyzed in different operation modes.Based on actual ultra-high voltage alternating current system parameters,the line protection device is tested with a real-time digital simulator (RTDS) to verify the calculation and analysis above,providing a basis for value setting of distance protection.It is shown by analysis that,influenced by double-circuit mutual inductance,traditional value setting of zone Ⅰ of earth-fault distance protection should be reduced to a rational extent to ensure the selectivity of protection.关键词
同杆并架双回线/动作边界/运行方式/实时数字仿真器(RTDS)Key words
double-circuit transmission lines on the same tower/trip boundary/operation mode/real-time digital simulator (RTDS)引用本文复制引用
邹晓峰,曾平,倪腊琴..同杆双回线下接地距离保护Ⅰ段动作边界计算与仿真测试[J].电力系统自动化,2015,(15):154-159,6.
