ICS29.160.20

CCSK20

中華人民共和國國家標準

GB/T20835—2024

代替GB/T20835—2016

發電機定子鐵心磁化試驗導則

Guideformagnetizationtestofgeneratorstatorcore

2024?08?23發布2025?03?01實施

國家市場監督管理總局

國家標準化管理委員會發布

GB/T20835—2024

目次

前言··························································································································Ⅲ

1范圍·······················································································································1

2規范性引用文件········································································································1

3術語和定義··············································································································1

4符號·······················································································································2

5前期計算·················································································································3

5.1定子鐵心軛部截面面積·························································································3

5.2定子鐵心軛部質量·······························································································3

5.3勵磁線圈匝數與勵磁電流······················································································3

5.4試驗電源容量·····································································································4

5.5測試線圈電壓·····································································································4

6試驗要求·················································································································4

6.1試驗現場···········································································································4

6.2試驗電源···········································································································4

6.3測量儀器和儀表··································································································4

6.4勵磁線圈···········································································································5

6.5測試線圈···········································································································5

7試驗方法·················································································································5

7.1試驗前檢查········································································································5

7.2試驗接線···········································································································5

7.3初始溫度測量·····································································································6

7.4試驗時監測········································································································6

7.5磁通密度的測量··································································································6

7.6定子鐵心損耗的測量····························································································6

7.7磁通密度和時間··································································································7

7.8試驗記錄···········································································································9

7.9試驗報告編制·····································································································9

7.10試驗后檢查·······································································································9

8質量判別·················································································································9

8.1定子鐵心最大溫升的限值······················································································9

8.2定子鐵心相同部位最大溫差的限值··········································································9

附錄A（資料性）低磁通渦流檢測方法············································································10

附錄B（資料性）定子鐵心比總損耗···············································································11

Ⅰ

GB/T20835—2024

B.1定子鐵心比總損耗的換算····················································································11

B.2定子鐵心比總損耗的參考判定依據········································································11

附錄C（資料性）試驗報告內容·····················································································12

C.1基本信息·········································································································12

C.2定子鐵心設計數據·····························································································12

C.3試驗設備儀表···································································································12

C.4基本數據·········································································································12

C.5試驗數據·········································································································12

C.6試驗結果·········································································································12

Ⅱ

GB/T20835—2024

前言

本文件按照GB/T1.1—2020《標準化工作導則第1部分：標準化文件的結構和起草規則》的規

定起草。

本文件代替GB/T20835—2016《發電機定子鐵心磁化試驗導則》，與GB/T20835—2016相比，除

結構調整和編輯性改動外，主要技術變化如下：

a）更改了范圍（見第1章，2016年版的第1章）；

b）增加了“術語和定義”一章（見第3章）；

c）更改了符號中、、的規定（見第4章，2016年版的第3章）；

f0Ps（1.0）Ps（1.4）

d5.120164.1

）更改了kFe取值的參考內容（見，年版的）；

e）增加了硅鋼片密度ρ的參考標準和取值范圍（見5.2）；

f5.3.1

）增加了試驗時的實際勵磁線圈匝數W1，應結合現場的實際情況進行調整（見）；

g）增加了試驗電源為三相變壓器和使用電容器補償的規定（見5.4）；

h）增加了勵磁線圈電纜的布置要求（見6.4）；

i）更改了絕緣電阻測量值的參考標準（見6.4，2016年版的4.4.1）；

j）更改了圖1試驗原理示意圖（見7.2，2016年版的6.1）；

k）增加了試驗時監測內容（見7.4）；

l）增加了定子鐵心損耗的測量（見7.6）；

m）增加了受現場試驗條件限制時，隱極同步發電機的試驗要求（見7.7.1.1）；

n）增加了試驗磁通密度偏差時的修正（見7.7.1.2）；

o）更改了附錄試驗數據修正，由附錄轉為正文（見7.7.1.2，2016年版的附錄B）；

p）增加了試驗頻率偏差時的修正（見7.7.1.3）；

q）刪除了發電機定子鐵心相同部位括號內的內容（見2016年版的7.2）。

請注意本文件的某些內容可能涉及專利。本文件的發布機構不承擔識別專利的責任。

本文件由中國電器工業協會提出。

本文件由全國大型發電機標準化技術委員會（SAC/TC511）歸口。

本文件起草單位：哈爾濱大電機研究所有限公司、哈爾濱電機廠有限責任公司、東方電氣集團東方

電機有限公司、上海電氣電站設備有限公司上海發電機廠、華電電力科學研究院有限公司東北分公司、

南方電網電力科技股份有限公司、浙江富春江水電設備有限公司、潤電能源科學技術有限公司、國網湖

北省電力有限公司電力科學研究院、哈動國家水力發電設備工程技術研究中心有限公司、中國長江三

峽集團有限公司內蒙古分公司、無錫普天鐵心股份有限公司、哈爾濱電氣動力裝備有限公司、河北豐寧

抽水蓄能有限公司、南方電網調峰調頻發電有限公司儲能科研院、山東齊魯電機制造有限公司、福建銓

一電源科技有限公司、蘇州范斯特機械科技有限公司、內蒙古電力（集團）有限責任公司內蒙古電力科

學研究院分公司。

本文件主要起草人：茍智德、周光厚、孫玉田、王健軍、張征平、成德明、唐強、岳嘯鳴、陳展、王向陽、

崔一鉑、胡剛、賁喜鵬、鄒祖冰、黃浩、楊正鋒、盛君、孫文東、李樂卿、李霖、郭俊杰、項源、王磊。

本文件及其所代替文件的歷次版本發布情況為：

——2007年首次發布為GB/T20835—2007；

——2016年第一次修訂；

——本次為第二次修訂。

Ⅲ

GB/T20835—2024

發電機定子鐵心磁化試驗導則

1范圍

本文件規定了發電機定子鐵心磁化試驗的前期計算、試驗要求、試驗方法和質量判別。

本文件適用于電壓等級為6.3kV及以上隱極同步發電機和水輪發電機，用于發電機定子鐵心質

量的檢驗。其他類型電機參照執行。

2規范性引用文件

下列文件中的內容通過文中的規范性引用