Article(id=1190338920131952877, tenantId=1146029695717560320, journalId=1190235702286704641, issueId=1190338910774464639, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1739376000000, receivedDateStr=2025-02-13, revisedDate=1743955200000, revisedDateStr=2025-04-07, acceptedDate=null, acceptedDateStr=null, onlineDate=1761728513986, onlineDateStr=2025-10-29, pubDate=1752508800000, pubDateStr=2025-07-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1761728513986, onlineIssueDateStr=2025-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1761728513986, creator=13701087609, updateTime=1761728513986, updator=13701087609, issue=Issue{id=1190338910774464639, tenantId=1146029695717560320, journalId=1190235702286704641, year='2025', volume='26', issue='7', pageStart='1', pageEnd='84', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1761728511756, creator=13701087609, updateTime=1761807981473, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1190672230997705207, tenantId=1146029695717560320, journalId=1190235702286704641, issueId=1190338910774464639, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1190672230997705208, tenantId=1146029695717560320, journalId=1190235702286704641, issueId=1190338910774464639, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=62, endPage=68, ext={EN=ArticleExt(id=1190338920744321266, articleId=1190338920131952877, tenantId=1146029695717560320, journalId=1190235702286704641, language=EN, title=Research on subsynchronous oscillation and application of the joint suppression measure based on SEDC and GTSDC in a power plant in Ximeng, columnId=1190338916357083282, journalTitle=Electrical Engineering, columnName=Technology & Application, runingTitle=null, highlight=null, articleAbstract=
Based on the 2×660 MW units of a power plant in Ximeng area, this paper studies the problem of power system subsynchronous oscillation/resonance, and puts forward the joint suppression measure based on supplementary excitation damping control (SEDC) and generator terminal subsynchronous damping control (GTSDC). The mechanism of the two systems is verified by experiments, and the oscillation attenuation characteristics of the independent scheme and the joint scheme under different working conditions are studied. The results show that the joint suppression measure based on SEDC and GTSDC achieves efficient collaborative control through parameter matching and multi time scale coordination, and significantly improves the suppression effect and response speed. Two actual fault cases verify the effectiveness and reliability of the joint suppression measure. The research also found that the sig-nal-to-noise ratio suppression effect of the speed signal is very important, so the suggestions of optimizing the reliability of the speed measurement system are put forward. The reseatch of this paper shows that the joint suppression measure based on SEDC and GTSDC can effectively solve the problem of unit subsyn-chronous oscillation, improve the dynamic stability rate of power system, and provide a technical refer-ence for the treatment of subsynchronous oscillation of similar units.
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本文依托锡盟地区某电厂2×660 MW机组,研究电力系统次同步振荡/谐振问题,并提出基于附加励磁阻尼控制(SEDC)与机端次同步阻尼控制(GTSDC)的联合抑制措施。通过试验验证两种控制系统的作用机制,分析独立方案与联合方案在不同工况下的振荡衰减特征。结果表明,SEDC与GTSDC联合抑制措施,通过参数匹配与多时间尺度协调,实现高效协同控制,显著提升了抑制效果和响应速度。两起实际故障案例验证了联合抑制措施的有效性和可靠性。此外,转速信号的信噪比对抑制效果至关重要,由此提出优化转速测量系统可靠性的建议。本文研究表明,SEDC与GTSDC联合抑制措施能够有效解决机组次同步振荡问题,提升电力系统的动态稳定性,可为类似机组的次同步振荡治理提供技术参考。
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疏佳铭(1990—),男,硕士,工程师,主要从事电力系统继电保护及自动化设备研发工作。
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疏佳铭(1990—),男,硕士,工程师,主要从事电力系统继电保护及自动化设备研发工作。
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锡盟地区系统接线, figureFileSmall=NZo8bloOgHe/UdUHop6Q6A==, figureFileBig=5IPD9xU2MmHCIq92ZA8AGw==, tableContent=null), ArticleFig(id=1190372857621352937, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=REOcWtucAFsYPsCP4Q529g==, figureFileBig=ymoEt/cjT38xcuq4ic0GFA==, tableContent=null), ArticleFig(id=1190372857684267498, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=图2, caption=
不同故障时低压缸和发电机之间的转矩, figureFileSmall=REOcWtucAFsYPsCP4Q529g==, figureFileBig=ymoEt/cjT38xcuq4ic0GFA==, tableContent=null), ArticleFig(id=1190372857789125099, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=ajZGS/xbB75t+JdnhgYHRA==, figureFileBig=OXTM4iwVub1GFmhXFBJqHw==, tableContent=null), ArticleFig(id=1190372857852039660, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=图3, caption=
SEDC原理, figureFileSmall=ajZGS/xbB75t+JdnhgYHRA==, figureFileBig=OXTM4iwVub1GFmhXFBJqHw==, tableContent=null), ArticleFig(id=1190372857923342829, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=BRfFuoTAHssiRur2z88SMg==, figureFileBig=TnjT7Nj244ObAGucvlF55w==, tableContent=null), ArticleFig(id=1190372857986257390, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=图4, caption=
GTSDC原理, figureFileSmall=BRfFuoTAHssiRur2z88SMg==, figureFileBig=TnjT7Nj244ObAGucvlF55w==, tableContent=null), ArticleFig(id=1190372858053366255, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=GBBkarHokLq+bCTPctcxBg==, figureFileBig=7hRhUa8rhkRU01pWZ2U20Q==, tableContent=null), ArticleFig(id=1190372858116280816, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=图5, caption=
SEDC与GTSDC联合抑制方案, figureFileSmall=GBBkarHokLq+bCTPctcxBg==, figureFileBig=7hRhUa8rhkRU01pWZ2U20Q==, tableContent=null), ArticleFig(id=1190372858183389681, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=LbDO42yOpqveCm/LiH4HRg==, figureFileBig=JgMhFWw0Mf/FWKM3bfFPkA==, tableContent=null), ArticleFig(id=1190372858250498546, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=图6, caption=
SEDC抑制方式下的2号机组模态1转速波形, figureFileSmall=LbDO42yOpqveCm/LiH4HRg==, figureFileBig=JgMhFWw0Mf/FWKM3bfFPkA==, tableContent=null), ArticleFig(id=1190372858321801715, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=Sqw1ck5PAfYn16BL2kkBoQ==, figureFileBig=P5N0afD2G0Banzzz7bSTvQ==, tableContent=null), ArticleFig(id=1190372858388910580, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=图7, caption=
GTSDC抑制方式下的2号机组模态1转速波形, figureFileSmall=Sqw1ck5PAfYn16BL2kkBoQ==, figureFileBig=P5N0afD2G0Banzzz7bSTvQ==, tableContent=null), ArticleFig(id=1190372858472796661, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=f6/0PCowXMJsTyoGY03nYg==, figureFileBig=eQG78DhBu2VsBP62hyv8CA==, tableContent=null), ArticleFig(id=1190372858552488438, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=图8, caption=
SEDC与GTSDC联合抑制方式下的2号机组模态1转速波形, figureFileSmall=f6/0PCowXMJsTyoGY03nYg==, figureFileBig=eQG78DhBu2VsBP62hyv8CA==, tableContent=null), ArticleFig(id=1190372858653151735, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=GlerF6N8ZrRVU/ROKHd1aQ==, figureFileBig=j1p2qrtn1V1Dtm9BcS3d/g==, tableContent=null), ArticleFig(id=1190372858716066296, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=图9, caption=
单极闭锁故障时2号机组联合抑制系统波形, figureFileSmall=GlerF6N8ZrRVU/ROKHd1aQ==, figureFileBig=j1p2qrtn1V1Dtm9BcS3d/g==, tableContent=null), ArticleFig(id=1190372858795758073, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=tH314oWznHS+loAgzrYTaw==, figureFileBig=ZpLFRp0JsTV5TRjDA7DVGg==, tableContent=null), ArticleFig(id=1190372858883838458, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=图10, caption=
双极闭锁故障时2号机组联合抑制系统波形, figureFileSmall=tH314oWznHS+loAgzrYTaw==, figureFileBig=ZpLFRp0JsTV5TRjDA7DVGg==, tableContent=null), ArticleFig(id=1190372859013861883, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=sMSi5+zkzC/gLHVKSwBwLg==, figureFileBig=vtZUmWNpACU5r+yeGr8oBA==, tableContent=null), ArticleFig(id=1190372859085165052, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=图11, caption=
1号机组STATCOM输出电流频谱, figureFileSmall=sMSi5+zkzC/gLHVKSwBwLg==, figureFileBig=vtZUmWNpACU5r+yeGr8oBA==, tableContent=null), ArticleFig(id=1190372859160662525, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=9fB/9DljCbLqPkVeBJCXQg==, figureFileBig=kpOWiNe56vANR0qS2DC+TQ==, tableContent=null), ArticleFig(id=1190372859219382782, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=图12, caption=
更换转速传感器前的抑制波形, figureFileSmall=9fB/9DljCbLqPkVeBJCXQg==, figureFileBig=kpOWiNe56vANR0qS2DC+TQ==, tableContent=null), ArticleFig(id=1190372859282297343, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=rl1EeOMUNLCGfjgRO5IEdg==, figureFileBig=Y4haiPd/sKQSYhdlSNOzGA==, tableContent=null), ArticleFig(id=1190372859353600512, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=图13, caption=
更换转速传感器后的抑制波形, figureFileSmall=rl1EeOMUNLCGfjgRO5IEdg==, figureFileBig=Y4haiPd/sKQSYhdlSNOzGA==, tableContent=null), ArticleFig(id=1190372859412320769, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 线路运行方式 | 串联谐振 | 电抗跌落 | 频率范围/Hz |
| 双回线带双串补 | 有 | 有 | 13~23 |
| 双回线带单串补 | 无 | 有 | 23~27 |
| 单回线带单串补 | 有 | 有 | 10~23 |
), ArticleFig(id=1190372859475235330, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=表1, caption=
频率扫描法评估结果
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| 线路运行方式 | 串联谐振 | 电抗跌落 | 频率范围/Hz |
| 双回线带双串补 | 有 | 有 | 13~23 |
| 双回线带单串补 | 无 | 有 | 23~27 |
| 单回线带单串补 | 有 | 有 | 10~23 |
), ArticleFig(id=1190372859542344195, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 线路运行方式 | 是否存在负电气阻尼 | 频率范围/Hz |
| 双回线带双串补 | 存在 | 30~40 |
| 双回线带单串补 | 存在 | 22~28 |
| 单回线带单串补 | 存在 | 25~35 |
), ArticleFig(id=1190372859617841668, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=表2, caption=
复转矩系数法评估结果
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| 线路运行方式 | 是否存在负电气阻尼 | 频率范围/Hz |
| 双回线带双串补 | 存在 | 30~40 |
| 双回线带单串补 | 存在 | 22~28 |
| 单回线带单串补 | 存在 | 25~35 |
), ArticleFig(id=1190372859689144837, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 抑制方法 | 激励开始 时间/s | 抑制功能 投入时间/s | 振荡平息 所用时间/s |
| SEDC | 2 | 12 | 8.8 |
| GTSDC | 2 | 12 | 6.1 |
| SEDC+GTSDC | 2 | 12 | 3.1 |
), ArticleFig(id=1190372859752059398, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=CN, label=表3, caption=
3种抑制方法的试验结果
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| 抑制方法 | 激励开始 时间/s | 抑制功能 投入时间/s | 振荡平息 所用时间/s |
| SEDC | 2 | 12 | 8.8 |
| GTSDC | 2 | 12 | 6.1 |
| SEDC+GTSDC | 2 | 12 | 3.1 |
), ArticleFig(id=1190372859886277127, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1190338920131952877, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 故障 | 机组 | 模态 | 最大扭振幅度/(rad/s) | 衰减时间常数/s |
| 单极闭锁 | 1号 | 模态1 | 0.274 | 0.476 |
| 模态2 | 0.121 | 1.256 |
| 2号 | 模态1 | 0.268 | 0.423 |
| 模态2 | 0.105 | 0.935 |
| 双极闭锁 | 1号 | 模态1 | 0.841 | 0.429 |
| 模态2 | 0.396 | 0.924 |
| 2号 | 模态1 | 0.836 | 0.407 |
| 模态2 | 0.387 | 1.056 |
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两次故障中各模态扭振的抑制效果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 故障 | 机组 | 模态 | 最大扭振幅度/(rad/s) | 衰减时间常数/s |
| 单极闭锁 | 1号 | 模态1 | 0.274 | 0.476 |
| 模态2 | 0.121 | 1.256 |
| 2号 | 模态1 | 0.268 | 0.423 |
| 模态2 | 0.105 | 0.935 |
| 双极闭锁 | 1号 | 模态1 | 0.841 | 0.429 |
| 模态2 | 0.396 | 0.924 |
| 2号 | 模态1 | 0.836 | 0.407 |
| 模态2 | 0.387 | 1.056 |
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