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.pdfVIP

安全生产|SafetyDOI:10.13882/ki.ncdqh.2024.02.008

220kV变电站主变保护高压侧开关

失灵联跳功能必要性分析

汪美林

（国网福建省电力有限公司厦门供电公司，福建厦门361100）

摘要：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220kV变电站主变不具备高

压侧开关失灵联跳功能时，一旦220kV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110kV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。

关键词：失灵联跳；可靠性；母差保护；主变保护中图分类号：TM727

NecessityAnalysisoftheHigh-voltageSideSwitchFailureTrippingFunctionof

TransformerProtectionina220kVSubstation

WANG

Meilin

(Xiamen

Power

Supply

Company,

State

Grid

Fujian

Electric

Power

Co.,

Ltd.,

Fujian

Xiamen

361100,

China)

Abstract: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.

Keywords:failure

interlock;

reliability;

bus

differential

protection;

main

transformer

protection

随着社会经济的发展，用电负荷显著增长，对出，当主变不具备高压侧开关联跳功能时，若

变电站的容量提出了更高的要求。同时像工厂由于220

kVⅠ段母线故障母差保护动作而#1主变高压侧

机器开机停机成本高昂，医院由于救死扶伤刻不容21

A开关失灵无法跳开时，由于110

kV具备电源

缓等这些用户往往需要更加可靠的供电，对变电站点，将通过#1主变倒送电至220

kV故障