中国电机工程学报Issue(28)：146-153,8.
过负荷状态下保护与稳定控制协调策略
A Coordination Strategy Between Relay Protection and Stability Control Under Overload Conditions
摘要
Abstract
Lack of coordination among the relay protection and stability control in“three lines of defense”will create risk for power network safe operation. To coordinate relay protection and stability control, research work in three respects were done in this paper. Firstly, operation zones of distance protections were adjusted and unbalance auxiliary criterion was used to improve the characteristics of distance protection. Secondly, overload criterion of transmission lines were improved and temperatures of lines, instead of currents ,were used to measure overload degree. According to heat capacity of transmission lines, action time of backup protection was prolonged in overload condition. Thirdly, a control strategy coordinating relay protection and stability control were proposed through expanding protection functions. Through coordination control of relay protection and stability control, the cascading of the faults can be prevented. Advanced Digital Power System Simulator(ADPSS)simulation results verified the correctness and effectiveness of the proposed scheme.关键词
电力系统/继电保护/稳定控制/距离保护/过负荷保护/协调控制策略Key words
power systems/relay protection/stability control/distance protection/overload protection/coordination control strategy分类
信息技术与安全科学引用本文复制引用
周泽昕,王兴国,杜丁香,李岩军,李明..过负荷状态下保护与稳定控制协调策略[J].中国电机工程学报,2013,(28):146-153,8.基金项目
国家重点基础研究发展计划项目(973项目)(2010CB736204)。The National Basic Research Program of China (973 Program)(2010CB736204) （973项目）
