远距离高阻抗送出发电机失磁过程仿真及保护分析  

Simulation on the Generator Loss-of-excitation Event and Research on Relay Protection Setting Under Long Distance or High Impedance Transmission

作　　者：张兵海 苏灿 陈鹏 王心蕊 焦玉刚[3] ZHANG Binghai;SU Can;CHEN Peng;WANG Xinrui;JIAO Yugang(State Grid Hebei Electric Power Research Institute,Shijiazhuang,050021,China;State Grid Gansu Liujiaxia Hydropower Station,Linxia 731600,China;Shaanxi Deyuan FuGu Energy Co.,Ltd.,Yulin,719400,China)

机构地区：[1]国网河北省电力有限公司电力科学研究院,河北石家庄050021 [2]国网刘家峡水电厂,甘肃临夏731600 [3]陕西德源府谷能源有限公司,陕西榆林719400

出　　处：《河北电力技术》2022年第2期67-71,89,共6页Hebei Electric Power

基　　金：国网河北省电力有限公司科技项目(kj2020-083)。

摘　　要：分析发电机失磁后测量阻抗的滑行轨迹,基于PSCAD仿真软件,对并网于远距离高阻抗送出系统的发电机组失磁故障进行了仿真,计算了不同工况下的发电机失磁过渡过程,对失磁保护的异步阻抗圆特性在阻抗轨迹中位置形态进行了研究,给出了异步圆和静稳圆的选择策略,并对发电机失磁保护异步阻抗圆的整定原则提出了建议。This paper does analysis on the sliding trace of generator terminal impedance after generator losses excitation,and simulates the event under different working condition at long distance or high impedance transmission of extra-high voltage or ultra-high voltage through PSCAD,and does research on the situation of the locus in asynchronous impedance circle of generator loss-of-excitation relay protection,gives the choosing strategy of the setting circle and the suggestion of the setting guide on asynchronous impedance circle.

关 键 词：发电机 远距离 等有功阻抗圆 失磁保护 PSCAD 

分 类 号：TM712[电气工程—电力系统及自动化]