UYG深瑞

PRS-778微機變壓器成套保護裝置

技術(shù)說明書

Ver1.00（華北220kV版）

編寫：郝后堂江衛(wèi)良

審核：于霞李延新

批準(zhǔn)：徐成斌

長園深瑞眶保自動化有跟公司

（原深圳南瑞科技有限公司）

二。。七年八月

本說明書為PRS-778裝置用于華北電網(wǎng)220kV系統(tǒng)時的技術(shù)說明書，適用于PRS-778軟

件PRS-778HB2AV1.00及以上版本。

說明：PRS-778裝置應(yīng)用于華北電網(wǎng)220kV系統(tǒng)時的標(biāo)準(zhǔn)版本軟件編號在“778”后增加“HB2”,

PRS-778HB2版軟件分類如下：

序號軟件版本備注

1PRS-778HB2A適用于220kV三卷變保護，低壓側(cè)為單分支

目錄

1裝置概述......................................................1

1.1應(yīng)用范圍..........................................................1

1.2保護配置..........................................................1

1.3典型應(yīng)用配置......................................................2

1.4主要性能特點......................................................4

2技術(shù)參數(shù)...................................................5

2.1機械及環(huán)境參數(shù)....................................................5

2.2額定電氣參數(shù)......................................................5

2.3主要技術(shù)指標(biāo)......................................................5

2.4通訊接口..........................................................6

3保護接線...................................................7

3.1TA接線原則及其平衡...............................................7

3.2差流計算公式......................................................7

4保護原理.....................................................9

4.1啟動元件..........................................................9

4.2差動速斷..........................................................9

4.3比率差動保護......................................................9

4.4采樣值差動保護....................................................11

4.5差動保護的其他相關(guān)元件...........................................13

4.6復(fù)合電壓閉鎖方向過流保護..........................................14

4.7零序方向過流保護（中性點接地保護）................................16

4.8間隙零序保護（中性點不接地保護）..................................17

4.9過負(fù)荷保護........................................................18

4.10TV斷線判別元件..................................................18

4.11TA斷線判別元件..................................................18

5輔助功能...................................................19

5.1信號系統(tǒng).........................................................19

5.2事故分析與過程記錄...............................................19

6定值清單及整定說明..........................................24

6.1PRS-778HB2A系統(tǒng)參數(shù)及主保護定值................................24

6.2PRS-778HB2A高壓側(cè)后備保護定值..................................26

6.3PRS-778HB2A中壓側(cè)后備保護定值..................................28

6.4PRS-778HB2A低壓側(cè)后備保護定值..................................30

6.5PRS-778HB2A低壓側(cè)電抗器后備保護定值............................31

6.6PRS-778HB2A保護跳閘控制字的整定說明............................32

7硬件說明........................................................33

7.1裝置整體結(jié)構(gòu)（硬件原理圖）........................................33

7.2動作出口..........................................................34

7.3輸入開關(guān)量........................................................35

7.4信號接點..........................................................36

7.5裝置接線與安裝....................................................36

8訂貨須知........................................................38

8.1基本訂貨參數(shù)......................................................38

8.2裝置軟件編號定義..................................................38

8.3裝置軟件版本列表..................................................39

附錄A裝置使用...................................................40

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

面板布置與顯示...........................................................40

A.2菜單界面操作說明.................................................42

附錄B裝置調(diào)試與投運............................................56

B.1調(diào)試資料準(zhǔn)備.....................................................56

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

通電前檢查...............................................................56

B.3上電檢查..........................................................56

B.4整機調(diào)試..........................................................56

B.5裝置投入運行操作步驟..............................................57

B.6注意事項.........................................................57

附錄C裝置通訊說明（IEC60870-5-103規(guī)約）.......................59

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

C2

保護加E董祥............................................................59

C.3自檢信息...........................................................62

C.4保護開關(guān)量和啟動信息...............................................63

C.5故障錄波實際通道序號表（ACC）......................................................................64

附錄D差動保護整定計算..........................................65

D.1比率差動.........................................................65

D.2差動速斷.........................................................68

附錄E后備保護整定計算..........................................69

E.1復(fù)壓閉鎖過流...