220 kV变电站主变保护高压侧开关失灵联跳功能必要性分析

Necessity Analysis of the High-voltage Side Switch Failure Tripping Function of Transformer Protection in a 220 kV Substation

从经济社会发展对变电站供电可靠性提出了更高的要求出发,分析了220 kV变电站主变不具备高压侧开关失灵联跳功能时,一旦220 kV母线故障将导致无法及时切除电源点隔离故障且扩大故障范围累及110 kV系统,严重影响供电可靠性。从而进一步指出如今变电站是如何在传统设备的基础上进一步完善该失灵联跳功能,保障电网的可靠运行。

This article starts from the higher requirements of economic and social development for the reliability of substation power supply.Without the function of high-voltage side switch failure tripping,once the 220 kV bus fails,it will lead to the inability to timely cut off the power supply point isolation fault and expand the fault range to affect the 110 kV system.It seriously affects the reliability of power supply.Thus,it is further pointed out how substations can further improve the failure and tripping function on the basis of traditional equipment,ensuring the reliable operation of the power grid.