摘要
高阻抗差动继电器是电厂机组电动机及电缆接地短路故障的重要保护装置。随着近年来中国电力行业的稳定发展,电厂容量持续扩大,电厂负荷等级也进一步提高,大型电动机在电力系统中的应用也越来越广泛。大型电动机设备运行环境恶劣,其自身体积大、质量重,造成电动机高阻抗差动保护故障风险升高,对电厂生产安全和生产效益带来不可估量的影响。为探究大型电动机高阻抗差动保护故障的有效处理方案,以某火电厂为例,通过分析该电厂电动机上SPAE010型高阻抗保护原理,总结其运行期间常见的故障与处理办法,以期为相关企业提供技术参考。
High impedance differential relay is an important protection device for short circuit fault of motor and cable in power plant.With the steady development of China electric power industry in recent years,the capacity of power plants continues to expand,the load level of power plants is further improved,and the application of large motors in power systems is becoming more and more extensive.The operation environment of large-scale motor equipment is harsh,and its own volume and weight are heavy,which causes the failure risk of high-impedance differential protection of motor to rise,which has an inestimable impact on the production safety and production efficiency of power plants.In order to explore the effective treatment scheme of high impedance differential protection fault of large motor,taking a thermal power plant as an example,the common faults and treatment methods during its operation are summarized by analyzing the principle of SPAE010 high impedance protection on the motor of this power plant,so as to provide technical reference for related enterprises.
作者
刘明玉
LIU Mingyu(Shenmu Jieneng Comprehensive Utilization Power Generation Co.,Ltd.,Shenmu 719300,China)
出处
《通信电源技术》
2023年第12期201-203,共3页
Telecom Power Technology
关键词
火电厂
大型电动机
差动保护
高阻抗
thermal power plant
large motor
differential protection
high impedance
