標(biāo)準(zhǔn)解讀

《GB/T 20835-2024 發(fā)電機定子鐵心磁化試驗導(dǎo)則》相比于《GB/T 20835-2016 發(fā)電機定子鐵心磁化試驗導(dǎo)則》，主要在以下幾個方面進(jìn)行了調(diào)整和更新：

  1. 試驗方法的細(xì)化與優(yōu)化：新標(biāo)準(zhǔn)對磁化試驗的具體步驟和操作流程進(jìn)行了更加詳細(xì)的規(guī)定，包括測試儀器的精度要求、試驗環(huán)境條件的控制以及數(shù)據(jù)采集的頻率等，旨在提高試驗結(jié)果的一致性和可重復(fù)性。

  2. 測試參數(shù)的增補：增加了對發(fā)電機定子鐵心在特定工況下磁性能評估的參數(shù)，比如考慮了更寬范圍的磁場強度和頻率影響，這有助于更全面地評價鐵心材料在不同工作條件下的表現(xiàn)。

  3. 標(biāo)準(zhǔn)適用范圍的擴展：新標(biāo)準(zhǔn)擴大了適用的發(fā)電機類型和功率范圍，包含了更多新型發(fā)電技術(shù)應(yīng)用中的定子鐵心磁化特性測試需求，增強了標(biāo)準(zhǔn)的通用性和前瞻性。

  4. 術(shù)語和定義的修訂：對一些關(guān)鍵術(shù)語和定義進(jìn)行了澄清和更新，以適應(yīng)技術(shù)進(jìn)步和行業(yè)發(fā)展的變化，確保專業(yè)術(shù)語的準(zhǔn)確性和國際一致性。

  5. 數(shù)據(jù)處理與分析方法的改進(jìn)：引入了新的數(shù)據(jù)分析技術(shù)和統(tǒng)計方法，指導(dǎo)如何有效處理測試數(shù)據(jù)，剔除異常值，進(jìn)行合理誤差分析，提高了試驗結(jié)果的準(zhǔn)確度和可靠性。

  6. 安全規(guī)范的加強：針對磁化試驗過程中可能存在的安全隱患，新標(biāo)準(zhǔn)增添了更為嚴(yán)格的安全操作規(guī)程和防護措施，強調(diào)了人員安全和設(shè)備保護的重要性。

  7. 環(huán)保要求的提及：雖然不是主要變更點，但新標(biāo)準(zhǔn)也體現(xiàn)了對環(huán)保的關(guān)注，鼓勵采用環(huán)保材料和工藝進(jìn)行試驗，減少對環(huán)境的影響。


如需獲取更多詳盡信息，請直接參考下方經(jīng)官方授權(quán)發(fā)布的權(quán)威標(biāo)準(zhǔn)文檔。

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文檔簡介

ICS29.160.20

CCSK20

中華人民共和國國家標(biāo)準(zhǔn)

GB/T20835—2024

代替GB/T20835—2016

發(fā)電機定子鐵心磁化試驗導(dǎo)則

Guideformagnetizationtestofgeneratorstatorcore

2024?08?23發(fā)布2025?03?01實施

國家市場監(jiān)督管理總局

國家標(biāo)準(zhǔn)化管理委員會發(fā)布

GB/T20835—2024

目次

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

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

2規(guī)范性引用文件········································································································1

3術(shù)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(zhì)量·······························································································3

5.3勵磁線圈匝數(shù)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(xiàn)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(jiān)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(zhì)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(jù)········································································11

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

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

C.2定子鐵心設(shè)計數(shù)據(jù)·····························································································12

C.3試驗設(shè)備儀表···································································································12

C.4基本數(shù)據(jù)·········································································································12

C.5試驗數(shù)據(jù)·········································································································12

C.6試驗結(jié)果·········································································································12

Ⅱ

GB/T20835—2024

前言

本文件按照GB/T1.1—2020《標(biāo)準(zhǔn)化工作導(dǎo)則第1部分：標(biāo)準(zhǔn)化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)

定起草。

本文件代替GB/T20835—2016《發(fā)電機定子鐵心磁化試驗導(dǎo)則》，與GB/T20835—2016相比，除

結(jié)構(gòu)調(diào)整和編輯性改動外，主要技術(shù)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(shù)語和定義”一章（見第3章）；

c）更改了符號中、、的規(guī)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(nèi)容（見，年版的）；

e）增加了硅鋼片密度ρ的參考標(biāo)準(zhǔn)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(shù)W1，應(yīng)結(jié)合現(xiàn)場的實際情況進(jìn)行調(diào)整（見）；

g）增加了試驗電源為三相變壓器和使用電容器補償?shù)囊?guī)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(biāo)準(zhǔn)（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(jiān)測內(nèi)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(xiàn)場試驗條件限制時，隱極同步發(fā)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(shù)據(jù)修正，由附錄轉(zhuǎn)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(fā)電機定子鐵心相同部位括號內(nèi)的內(nèi)容（見2016年版的7.2）。

請注意本文件的某些內(nèi)容可能涉及專利。本文件的發(fā)布機構(gòu)不承擔(dān)識別專利的責(zé)任。

本文件由中國電器工業(yè)協(xié)會提出。

本文件由全國大型發(fā)電機標(biāo)準(zhǔn)化技術(shù)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(zé)任公司、東方電氣集團東方

電機有限公司、上海電氣電站設(shè)備有限公司上海發(fā)電機廠、華電電力科學(xué)研究院有限公司東北分公司、

南方電網(wǎng)電力科技股份有限公司、浙江富春江水電設(shè)備有限公司、潤電能源科學(xué)技術(shù)有限公司、國網(wǎng)湖

北省電力有限公司電力科學(xué)研究院、哈動國家水力發(fā)電設(shè)備工程技術(shù)研究中心有限公司、中國長江三

峽集團有限公司內(nèi)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(wǎng)調(diào)峰調(diào)頻發(fā)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(nèi)蒙古電力（集團）有限責(zé)任公司內(nèi)蒙古電力科

學(xué)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(fā)布情況為：

——2007年首次發(fā)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(fā)電機定子鐵心磁化試驗導(dǎo)則

1范圍

本文件規(guī)定了發(fā)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(zhì)量判別。

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

量的檢驗。其他類型電機參照執(zhí)行。

2規(guī)范性引用文件

下列文件中的內(nèi)容通過文中的規(guī)范性引用

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