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电力系统继电保护装置是在发、供电系统运行正常时,应能完整地、安全地监视各种设备的运行状况,为值班人员提供可靠的运行依据。如供电系统中发生故障时,能自动地、迅速地、有选择性地切除故障部分,保证非故障部分继续运行。电力系统继电保护装置有可靠性、灵敏性、选择性、迅速性、准确性等要求,如果满足不了以上要求对电力系统带来不利影响。
Power system relay protection device is in the hair, power supply system is operating normally, should be able to complete and safe monitoring of the operation of various devices, to provide a reliable basis for duty operators. If there is a fault in the power supply system, the fault part can be automatically, promptly and selectively cut off and the non-fault part can be kept running. Power system relay protection device reliability, sensitivity, selectivity, speed, accuracy and other requirements, if you can not meet the above requirements adversely affect the power system.