直流滤波器保护信号误动风险分析及改造方案  

Risk Analysis and Improvement Scheme of DC Filter Protection Signal Maloperation

作　　者：晏庆丰 YAN Qingfeng(Chuxiong Power Supply Bureau,Yunnan Power Grid Co.,Ltd.,Yunnan Chuxiong 675000,China)

机构地区：[1]云南电网有限责任公司楚雄供电局,云南楚雄675000

出　　处：《农村电气化》2022年第8期30-31,共2页Rural Electrification

摘　　要：通过分析±500 kV永仁换流站直流滤波器日常运行中或者直流滤波器因故退出运行时,因为运行人员误操作、检修人员执行安措不到位而导致直流滤波器两套保护均故障造成极控系统判断直流滤波器无保护运行,极控系统将发ESOF闭锁对应极,将导致永富直流输送能力减半,不但造成清洁能源浪费,同时还威胁电网安全稳定运行。针对存在的风险进行梳理分析,并提出改造措施,从根本上解决因系统误动、人为误操作等不可控的风险,优化系统判断逻辑,最大限度降低不可控因素导致保护误动的后果。This paper analyzes ±500 kv During the daily operation of the DC filter in the Yongren converter station or when the DC filter exits the operation for some reason, the pole control system judges that the DC filter has no protection operation due to the fault of both sets of protection of the DC filter caused by the operator’s misoperation and the maintenance personnel’s inadequate safety measures. The pole control system will send esof to lock the corresponding pole, which will reduce the DC transmission capacity of Yongfu by half It is a waste of clean energy and a threat to the safe and stable operation of the power grid. In view of the existing risks, this paper analyzes them and puts forward the transformation plan, which fundamentally solves the uncontrollable risks such as system misoperation and human misoperation, optimizes the system judgment logic, and minimizes the consequences of protection misoperation caused by uncontrollable factors.

关 键 词：闭锁 误动 直流滤波器 

分 类 号：TM475[电气工程—电器]