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Modern power systems may experience untypical forced wideband oscillations, and traditional methods are difficult to identify the source of such forced oscillations. This paper proposes a universal identification method for forced oscillation sources based on voltage oscillation ratio (VOR), using wide-frequency measurement data provided by the broadband measurement system. The VOR is the ratio of the oscillation voltage amplitude relative to the steady-state voltage amplitude, which can effectively reflect the physical characteristics that the forced oscillation source has the maximum relative amplitude of oscillation voltage. This method is suitable for identification of low-frequency oscillation and sub/super-synchronous oscillation. This method is applicable in different voltage levels and can reduce the impact of measurement errors of transformers and broadband measurement devices. The effectiveness of this proposed method is verified through simulation cases and on-site cases.
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现代电力系统可能发生非典型强迫宽频振荡,传统的强迫振荡源识别方法难以适用。本文利用宽频测量系统提供的宽频测量数据,提出基于电压振幅比(VOR)的强迫振荡源定位方法。电压振幅比为电压振荡量与电压稳态量的比值,可有效反映强迫振荡源处振荡电压相对幅度最大的物理规律,适用于低频振荡、次同步振荡和超同步振荡判别。该方法适用于不同电压等级,可减少互感器和宽频测量装置测量误差的影响。通过仿真案例和现场案例验证了该方法的有效性。
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陈玉林(1980—),男,博士,湖北武汉人,高级工程师,主要从事广域同步相量测量和输电线路故障测距技术研究工作。
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陈玉林(1980—),男,博士,湖北武汉人,高级工程师,主要从事广域同步相量测量和输电线路故障测距技术研究工作。
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陈玉林(1980—),男,博士,湖北武汉人,高级工程师,主要从事广域同步相量测量和输电线路故障测距技术研究工作。
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40(19): 1-8., articleTitle=利用暂态能量流的次同步强迫振荡扰动源定位及阻尼评估, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1194653478388736750, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, xref=null, ext=[AuthorCompanyExt(id=1194653478392931055, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, companyId=1194653478388736750, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=NR Electric Co., Ltd, Nanjing 211102), AuthorCompanyExt(id=1194653478401319664, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, companyId=1194653478388736750, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=南京南瑞继保电气有限公司,南京 211102)])], figs=[ArticleFig(id=1194653481052119819, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=EN, label=null, caption=null, figureFileSmall=PnTTlEnd7qNad9grdV6UTg==, figureFileBig=AKU6U5rRpkisTDPoiDrbVA==, tableContent=null), ArticleFig(id=1194653481106645772, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=CN, label=图1, caption=
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单机联网系统等效电路, figureFileSmall=w6B2tdshT3RRKPZKBWVCuw==, figureFileBig=n09wzDHIcENNoYEOK0tUpQ==, tableContent=null), ArticleFig(id=1194653481303778063, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=EN, label=null, caption=null, figureFileSmall=zKFkrnOBWUOqllhykAkBCg==, figureFileBig=UHvyFujZtC5QcMVXL3MSlg==, tableContent=null), ArticleFig(id=1194653481358304016, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=CN, label=图3, caption=
只包含工频电源的等效电路, figureFileSmall=zKFkrnOBWUOqllhykAkBCg==, figureFileBig=UHvyFujZtC5QcMVXL3MSlg==, tableContent=null), ArticleFig(id=1194653481412829969, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=EN, label=null, caption=null, figureFileSmall=7pIaXeqCOegWC61aHCmg8g==, figureFileBig=tcy4dRTetMy1xO0UV4bFmw==, tableContent=null), ArticleFig(id=1194653481471550226, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=CN, label=图4, caption=
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强迫振荡源位于电网侧的等效电路, figureFileSmall=hsH450eI7QgrobvAQM19UA==, figureFileBig=v9ra2qsIGL++7QqOqt+4ig==, tableContent=null), ArticleFig(id=1194653481647710997, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=EN, label=null, caption=null, figureFileSmall=6BfWjEz6SxMaau2u0oWyoA==, figureFileBig=akO75wwieidSkg4jrWhd6g==, tableContent=null), ArticleFig(id=1194653481702236950, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=CN, label=图6, caption=
强迫振荡时的电压分布, figureFileSmall=6BfWjEz6SxMaau2u0oWyoA==, figureFileBig=akO75wwieidSkg4jrWhd6g==, tableContent=null), ArticleFig(id=1194653481760957207, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=EN, label=null, caption=null, figureFileSmall=4w0zudL1ebdOCuOekegJWw==, figureFileBig=LeCcKf+fgMSeuPl/8n1xjg==, tableContent=null), ArticleFig(id=1194653481815483160, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=CN, label=图7, caption=
双机电厂联网仿真模型, figureFileSmall=4w0zudL1ebdOCuOekegJWw==, figureFileBig=LeCcKf+fgMSeuPl/8n1xjg==, tableContent=null), ArticleFig(id=1194653481878397721, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=EN, label=null, caption=null, figureFileSmall=YhFBbslpI3oyBh9+yPavZA==, figureFileBig=fW1D1r/NfDHO6roBG5b+7g==, tableContent=null), ArticleFig(id=1194653481941312282, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=CN, label=图8, caption=
案例1 GJ电厂强迫振荡波形, figureFileSmall=YhFBbslpI3oyBh9+yPavZA==, figureFileBig=fW1D1r/NfDHO6roBG5b+7g==, tableContent=null), ArticleFig(id=1194653482000032539, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=EN, label=null, caption=null, figureFileSmall=WpatkN5c0xsf4796n5u3Zg==, figureFileBig=pYA65UPa+JXKpwKrGHS2lQ==, tableContent=null), ArticleFig(id=1194653482054558492, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=CN, label=图9, caption=
案例2 ZSP电厂强迫振荡波形, figureFileSmall=WpatkN5c0xsf4796n5u3Zg==, figureFileBig=pYA65UPa+JXKpwKrGHS2lQ==, tableContent=null), ArticleFig(id=1194653482113278749, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=EN, label=null, caption=null, figureFileSmall=Fw3dch27LsaarUpPqDyJYw==, figureFileBig=fEsIet/CS1OBy93uyOJYKQ==, tableContent=null), ArticleFig(id=1194653482163610398, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=CN, label=图10, caption=
案例3 SH电厂强迫振荡波形, figureFileSmall=Fw3dch27LsaarUpPqDyJYw==, figureFileBig=fEsIet/CS1OBy93uyOJYKQ==, tableContent=null), ArticleFig(id=1194653482222330655, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=EN, label=null, caption=null, figureFileSmall=YBWeREZKtO1dndLwt08shg==, figureFileBig=ymUJl5pp8pWhlIRwuiVxBg==, tableContent=null), ArticleFig(id=1194653482272662304, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=CN, label=图11, caption=
案例4 MHG风电厂强迫次同步振荡波形, figureFileSmall=YBWeREZKtO1dndLwt08shg==, figureFileBig=ymUJl5pp8pWhlIRwuiVxBg==, tableContent=null), ArticleFig(id=1194653482339771169, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 振荡位置 | 电压振幅比KU | 判别结果 |
| A点 | B点 | C点 | D点 |
| A点 | 0.346 | 0.117 | 0.117 | 0.044 | A |
| B点 | 0.117 | 0.346 | 0.117 | 0.044 | B |
| D点 | 0.045 | 0.045 | 0.117 | 0.341 | D |
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双机联网系统强迫低频振荡的电压振幅比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 振荡位置 | 电压振幅比KU | 判别结果 |
| A点 | B点 | C点 | D点 |
| A点 | 0.346 | 0.117 | 0.117 | 0.044 | A |
| B点 | 0.117 | 0.346 | 0.117 | 0.044 | B |
| D点 | 0.045 | 0.045 | 0.117 | 0.341 | D |
), ArticleFig(id=1194653482469794595, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635564440850808, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | Ua(基波)/kV | Ua(间谐波)/kV | 电压振幅比/% |
| 35kV侧 | 20.535 | 0.693 | 1.99 |
| 110kV侧 | 68.460 | 1.099 | 1.00 |
| 220kV侧 | 138.469 | 1.902 | 0.86 |
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MHG风电汇集站变压器各侧电压
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | Ua(基波)/kV | Ua(间谐波)/kV | 电压振幅比/% |
| 35kV侧 | 20.535 | 0.693 | 1.99 |
| 110kV侧 | 68.460 | 1.099 | 1.00 |
| 220kV侧 | 138.469 | 1.902 | 0.86 |
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