PRS-778-华北220-100技术使用说明书

UYG深瑞

PRS-778微机变压器成套保护装置

技术说明书

Ver1.00（华北220kV版）

编写：郝后堂江卫良

审核：于霞李延新

批准：徐成斌

长园深瑞眶保自动化有跟公司

（原深圳南瑞科技有限公司）

二。。七年八月

本说明书为PRS-778装置用于华北电网220kV系统时的技术说明书，适用于PRS-778软

件PRS-778HB2AV1.00及以上版本。

说明：PRS-778装置应用于华北电网220kV系统时的标准版本软件编号在“778”后增加“HB2”,

PRS-778HB2版软件分类如下：

序号软件版本备注

1PRS-778HB2A适用于220kV三卷变保护，低压侧为单分支

目录

1装置概述......................................................1

1.1应用范围..........................................................1

1.2保护配置..........................................................1

1.3典型应用配置......................................................2

1.4主要性能特点......................................................4

2技术参数...................................................5

2.1机械及环境参数....................................................5

2.2额定电气参数......................................................5

2.3主要技术指标......................................................5

2.4通讯接口..........................................................6

3保护接线...................................................7

3.1TA接线原则及其平衡...............................................7

3.2差流计算公式......................................................7

4保护原理.....................................................9

4.1启动元件..........................................................9

4.2差动速断..........................................................9

4.3比率差动保护......................................................9

4.4采样值差动保护....................................................11

4.5差动保护的其他相关元件...........................................13

4.6复合电压闭锁方向过流保护..........................................14

4.7零序方向过流保护（中性点接地保护）................................16

4.8间隙零序保护（中性点不接地保护）..................................17

4.9过负荷保护........................................................18

4.10TV断线判别元件..................................................18

4.11TA断线判别元件..................................................18

5辅助功能...................................................19

5.1信号系统.........................................................19

5.2事故分析与过程记录...............................................19

6定值清单及整定说明..........................................24

6.1PRS-778HB2A系统参数及主保护定值................................24

6.2PRS-778HB2A高压侧后备保护定值..................................26

6.3PRS-778HB2A中压侧后备保护定值..................................28

6.4PRS-778HB2A低压侧后备保护定值..................................30

6.5PRS-778HB2A低压侧电抗器后备保护定值............................31

6.6PRS-778HB2A保护跳闸控制字的整定说明............................32

7硬件说明........................................................33

7.1装置整体结构（硬件原理图）........................................33

7.2动作出口..........................................................34

7.3输入开关量........................................................35

7.4信号接点..........................................................36

7.5装置接线与安装....................................................36

8订货须知........................................................38

8.1基本订货参数......................................................38

8.2装置软件编号定义..................................................38

8.3装置软件版本列表..................................................39

附录A装置使用...................................................40

A...............................................................................................................................................1

面板布置与显示...........................................................40

A.2菜单界面操作说明.................................................42

附录B装置调试与投运............................................56

B.1调试资料准备.....................................................56

B...............................................................................................................................................2

通电前检查...............................................................56

B.3上电检查..........................................................56

B.4整机调试..........................................................56

B.5装置投入运行操作步骤..............................................57

B.6注意事项.........................................................57

附录C装置通讯说明（IEC60870-5-103规约）.......................59

C.1定值和交流量.....................................................59

C2

保护加E董祥............................................................59

C.3自检信息...........................................................62

C.4保护开关量和启动信息...............................................63

C.5故障录波实际通道序号表（ACC）......................................................................64

附录D差动保护整定计算..........................................65

D.1比率差动.........................................................65

D.2差动速断.........................................................68

附录E后备保护整定计算..........................................69

E.1复压闭锁过流...