电力系统继电保护及其自动化装置可靠性分析

Reliability Analysis of Power System Relay Protection and Its Automation Devices

在电力系统中,继电保护作为重要二次保护设备,对系统安全可靠运行发挥较大作用。在继电保护装置实际运行中,由于受到人为操作、环境干扰、自身缺陷等因素影响,导致继电保护装置出现故障,可靠性降低,主要表现为装置的拒动、误动、误报警等,使得操作命令不能准确、及时发送,阻碍断路器正常跳闸,导致故障危害进一步扩大。文中主要分析继保系统与装置可靠性的影响因素,通过加强系统自身检验、注意系统外部环境选择、提高工作人员专业技能等方式,使继保系统运行效率与可靠性提升,降低电力系统故障扩大概率。

In the power system,relay protection,as an important secondary protection device,plays a great role in the safe and reliable operation of the system.In the actual operation of relay protection devices,due to factors such as human operation,environmental interference,and self-defects,relay protection devices fail,and the reliability decreases,which is mainly manifested as the refusal,misoperation,and false alarm of the device,which makes the operation command cannot be accurately and timely.Send it to prevent the circuit breaker from tripping normally,causing the fault hazard to expand further.This paper mainly analyzes the influencing factors of the reliability of the protection system and its devices.By strengthening the self-inspection of the system,paying attention to the selection of the external environment of the system,and improving the professional skills of the staff,the operation efficiency and reliability of the protection system are improved,and the probability of power system fault expansion is reduced.