一起因特高压直流事故引起的AGC指令异常分析及整改措施  

Analysis and Treatment of Abnormal AGC Orders Caused by a UHVDC Block Fault

作　　者：孙文多[1] 卢敏[1] 项中明[1] 倪秋龙[1] 刘俊伟[2] 高强[1] 金啸虎 

机构地区：[1]国网浙江省电力公司,浙江杭州310007 [2]国电南瑞科技股份有限公司,江苏南京210003

出　　处：《中国电力》2017年第5期33-38,共6页Electric Power

摘　　要：针对特高压直流事故处理中系统AGC指令变化进行分析,指出了其过程中发生的异常情况,并提出优化措施。介绍了浙江电网AGC控制模块及四川溪洛渡—浙西±800 kV特高压直流工程(宾金直流)发生的单极闭锁事故的省调处置过程,通过对故障后系统指令、电网数据变化找出系统存在的缺陷,提出针对受电取值机制、电网低频控制、动态死区优化的3项整改措施。最后将该改进措施应用于实际运行的AGC系统,特别提升了系统针对特高压直流电力设备事故的防灾减灾能力,可有效防止类似异常事件的再次发生,对特高压直流送受端电网的安全运行具有一定借鉴意义。Based on analysis of AGC orders and feedback data during an UHVDC block fault accident treatment, abnormal conditions in automatic generation control system are discussed and rectification measures are proposed. Automatic generation control （AGC） strategies in Zhejiang power grid and accident treatment of one ±800 kV Yibin-Jinhua DC unipolar block fault performed by provincial dispatcher are introduced. System defects are found after reviewing data changes. Improvement measures in transmission mechanism of power importing data, control of low frequency and dynamic dead band optimization are proposed. These measures are already operated in actual power grid system operation which have instructive significance for UHVDC export/import power grid.

关 键 词：特高压直流 自动发电控制 事故处置 区域网调节功率 ARR动态死区 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM73