摘要
在机组正常停机过程中,投入电气制动开关后,发电机组处于机端有电流的状态,此时容易导致部分继电保护功能的启动甚至误动作。以水布垭水电厂为例,分析了电气制动停机方式对发变组继电保护装置功能的影响,为避免保护在停机投入电气制动后的误动作,提出了相应的处理方案,以保障发电机组及电力系统的安全稳定。
During the normal shutdown process of a unit,when the electrical braking switch is turned on,the generator unit is in a state that there is current at the generator end,which may lead to the activation or even mis-action of some relay protection functions.Taking Shuibuya Hydropower Plant as an example,the influence of the electrical braking shutdown mode on the relay protection function of the generator-transformer unit is analyzed.To avoid the mis-action of the relay protection when the electrical braking is applied during the shutdown process,corresponding treatment schemes are proposed to ensure the safety and stability of the generator unit and the power system.
作者
朱梓豪
周毅
罗宁生
刘若松
杜幸珂
ZHU Zihao;ZHOU Yi;LUO Ningsheng;LIU Ruosong;DU Xingke(Hubei Qingjiang Hydroelectric Development Co.,Ltd.,Hubei Energy Group,Yichang 443000,China)
出处
《水电与新能源》
2025年第5期74-76,90,共4页
Hydropower and New Energy
关键词
水轮发电机组
电气制动
继电保护
hydro-turbine generator unit
electrical braking
relay protection
