摘要
电网系统发生线路外部破坏事故时,某热电联产电厂双机组同时跳闸,引发全厂停电及1台锅炉发生干锅事故。对比两侧保护动作情况列出动作时序图,分析机组跳闸原因,提出解决措施。全面提高了该热电联产电厂机组的运行可靠性,降低了线路外部发生破坏事故时对电厂及电力系统的影响,保证了电力系统安全稳定运行。
When an external damage accident occurs in the power system,the simultaneous tripping of the dual units in a cogeneration power plant leads to the whole plant's power cut and a boiler's dry pot accident.lt compares the protection action on both sides and lists the action timing diagram.lt analyzes the cause of unit trip and puts forward countermeasures.The operation reliability of the cogeneration power plant unit is improved comprehensively.lt improves the operation reliability of the units in the cogeneration power plant comprehensively,and reduces the influence of the power plant and power system when the damage accident occurs outside the line.lt ensures the safe and stable operation of the power system.
作者
宋正
余文彦
杨林
SONG Zheng;YU Wenyan;YANG Lin(Henan Normal University,Xinxiang,Henan 453007,China)
出处
《东北电力技术》
2024年第2期41-46,共6页
Northeast Electric Power Technology
关键词
热电联产
双机组跳闸
动作时序图
可靠性
线路外部破坏
cogeneration
dual unit trip
action timing diagram
reliability
outside the line broken
