蓄电池内阻异常引起的保护测控装置故障分析.pdfVIP

DOI:10.13882/ki.ncdqh.2024.08.010Safety|安全生产

蓄电池内阻异常引起的保护测控装置故障分析

杨利斌

（国网浙江省电力有限公司杭州市余杭区供电公司，浙江杭州311100）

摘要：

直流系统给变电站内继电保护装置、断路器操作、各类信号回路、事故照明等提供电源，是变电

站的重要组成部分。蓄电池则是直流系统的核心部件，在变电站直流系统的交流输入消失或者直流充电

模块故障时，为设备提供直流电源，保证变电站一段时间的稳定运行。文章针对一起10

kV配电线路故

障引起变电站内直流母线电压异常，导致多个保护测控装置故障的事件原因进行分析，找到隐藏的蓄电

池内阻异常原因，为变电站异常事故分析和日常安全运维提供参考。

关键词：

直流系统；蓄电池；继电保护；故障分析中图分类号：

TM727

Analysis

of

Protection

Measurement

and

Control

Device

Fault

Caused

by

Abnormal

Internal

Resistance

of

Battery

YANG

Libin

(State

Grid

Zhejiang

Electric

Power

Co.,

Ltd.

Hangzhou

Yuhang

District

Power

Supply

Company,

Zhejiang

Hangzhou

311100,

China)

Abstract:

The

DC

system

is

an

important

part

of

the

substation

to

provide

power

for

the

relay

protection

device,

circuit

breaker

operation,

all

kinds

of

signal

circuits,

accident

lighting

and

so

on.

The

battery

is

the

core

component

of

the

DC

system.

When

the

AC

input

of

the

DC

system

disappears

or

the

DC

charging

module

fails,

the

battery

provides

DC

power

for

the

equipment

to

ensure

the

stable

operation

of

the

substation

for

a

period

of

time.

This

paper

analyzes

the

causes

of

a

10

kV

distribution

line

fault

that

causes

the

DC

bus

voltage

in

substation

to

be

abnormal,

leading

to

the

failure

of

multiple

protection

measurement

and

control

devices,

and

finds

out

the

hidden

causes

of

battery

internal

resistance

abnormalities,

providing

reference

for

substation

abnormal

accident

analysis

and

daily

safety

operation

and

maintenance.

Keywords:

DC

system;

storage

battery;

relay

protection;

fault

analysis

直流系统在变电站中起着非常重要的作用，它压异常，导致多个保护测控装置故障的事件原