广东电力2018，Vol.31Issue(2)：76-81,6.DOI:10.3969/j.issn.1007-290X.2018.002.012
基于直流闭锁事故的华东电网频率特性及控制措施
Frequency Characteristic of East China Power Grid Based on DC Block Accidents and Control Measures
摘要
Abstract
Growing DC feed-in scale outside East China has caused gradual decrease of frequency stability supporting charac-teristic in East China power grid.In allusion to two cases of DC block accidents in East China in 2016,this paper aims to de-velop simulation on frequency stability characteristics of receiving power grids.By adjusting primary frequency modulation characteristics of generators,it reappears frequency response process of the system after UHVDC block.Then,it carries out simulation on frequency stability after DC block of the maximum single circuit and double circuit under low-load operation mode.Simulation results indicate the primary frequency modulation abilities of current power grids are insufficient which may cause low-frequency load shedding risks after DC block.Thus,East China power grid has developed construction of fre-quency emergency coordination and control system and by system simulation,corresponding control measures are proved to be effective.Relevant research methods and conclusions have been used for simulating analysis on East China frequency and formulating accident plans so as to improve risk defense ability after DC block.关键词
直流闭锁/频率稳定/一次调频/低频减载/直流功率调升/抽蓄切泵Key words
direct current block/frequency stability/the primary frequency modulation/low-frequency load shedding/direct current power regulation/pumped storage generator tripping分类
信息技术与安全科学引用本文复制引用
邓晖,楼伯良,华文,黄弘扬,赵一琰,卢岑岑..基于直流闭锁事故的华东电网频率特性及控制措施[J].广东电力,2018,31(2):76-81,6.基金项目
国家电网公司科技项目(521104170013) （521104170013）
