火电厂大型发电机组继电保护整定设计与故障分析

Relay protection setting design and fault analysis for large generator unit in thermal power plant

在分析燃煤式火力发电厂内燃煤发电机变压器组特点的基础上,给出了发电机组继电保护整定原则,并对中粤2×600 MW燃煤式火力发电厂发电机组的继电保护进行了整定计算。继而结合中粤电厂设备继电保护运行状况,介绍了保护动作发生时的故障检查与分析方法,并给出了改进措施,为以后的安全运行提出合理建议。

Based on the characteristics analysis of the generator-transformer unit in coal-fired power plant, the setting principle of protective relaying was given in this paper, The relay protection of the generators in a 2 × 600 MW coal-fired plant of Zhanjiang in Guang- dong Hans Energy Company was calculated in details. Then combined with the protection device operation conditions in the plant, troubleshooting methods were introduced when the protective action occurred. The improvement measures were given to put forward reasonable proposals for future safe operation.