Article(id=1206314802058707253, tenantId=1146029695717560320, journalId=1189987059142926344, issueId=1206314797411418409, articleNumber=null, orderNo=null, doi=10.19457/j.1001-2095.dqcd25193, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1687190400000, receivedDateStr=2023-06-20, revisedDate=1687708800000, revisedDateStr=2023-06-26, acceptedDate=null, acceptedDateStr=null, onlineDate=1765537461056, onlineDateStr=2025-12-12, pubDate=1710864000000, pubDateStr=2024-03-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1765537461056, onlineIssueDateStr=2025-12-12, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1765537461055, creator=13701087609, updateTime=1765537461055, updator=13701087609, issue=Issue{id=1206314797411418409, tenantId=1146029695717560320, journalId=1189987059142926344, year='2024', volume='54', issue='3', pageStart='3', pageEnd='96', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=0, articleOrder=1, issueType=-1, specialIssue=null, createTime=1765537459937, creator=13701087609, updateTime=1765766624077, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1207275981480477057, tenantId=1146029695717560320, journalId=1189987059142926344, issueId=1206314797411418409, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1207275981480477058, tenantId=1146029695717560320, journalId=1189987059142926344, issueId=1206314797411418409, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=68, endPage=75, ext={EN=ArticleExt(id=1206314802851430712, articleId=1206314802058707253, tenantId=1146029695717560320, journalId=1189987059142926344, language=EN, title=Identification of Voltage Saddle Node Bifurcation Point in Power System Based on Quadratic Form Approximation Method, columnId=null, journalTitle=Electric Drive, columnName=null, runingTitle=null, highlight=null, articleAbstract=
In order to intervale evaluate saddle node bifurcation points(SNB) in a power system during load growth quickly and accurately, a quadratic approximation method to directly calculate the power system voltage collapse point of was proposed. Based on the approximate quadratic PV-curve of output PQ nodes in the system, load parameters were introduced into the node power balance equation, by using the complex function derivative rules to differentiate power equation twice, the first and second derivatives of node voltage to load parameters were derived theoretically, and the expression of PV curve function was further determined, then vertex coordinates were used to determine the initial position of saddle junction bifurcation point in the power system and the voltage collapse point was approximated by multiple iterations of convergence. The proposed method avoids multiple power flow calculations using the continuous power flow method,significantly reducing computational complexity. Simulation results on IEEE 14 and IEEE 118 bus systems demonstrate the effectiveness of this method. Compared with the supplemented P'Q node method and Thevenin's equivalent method, the quadratic form iterative approximation method has higher computational efficiency and robustness.
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为实现负荷增长过程中电力系统鞍结分岔点(SNB)的快速准确识别,提出一种直接计算电力系统电压崩溃点的二次型迭代逼近方法,基于系统中PQ节点输出的PV曲线为近似二次型的特点,在节点功率平衡方程中引入负荷增长参数,运用复合函数求导法则就功率方程进行两次求导,理论推导节点电压对负荷参数的一阶、二阶导数表达式,由此确定PV曲线二项式,依靠顶点坐标确定电力系统鞍结分岔点的初始位置,经多次迭代收敛逼近电压崩溃点。所提方法避免了连续潮流法的多次潮流计算,可显著降低计算量。以IEEE 14,IEEE 118节点系统进行仿真验证,证明了该方法的有效性,相较增补P'Q节点法及戴维南等值法,二次型迭代逼近法具有较高的计算效率和鲁棒性。
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40(2):69-76., articleTitle=基于曲面二次标准型逼近的最近电压稳定临界点求取方法, refAbstract=null), Reference(id=1207275591099830994, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, doi=null, pmid=null, pmcid=null, year=2016, volume=40, issue=2, pageStart=69, pageEnd=76, url=null, language=null, rfNumber=[24], rfOrder=44, authorNames=FANG Sidun, CHENG Haozhong, XU Guodong, journalName=Automation of Electric Power Systems, refType=null, unstructuredReference=
FANG Sidun,
CHENG Haozhong,
XU Guodong, et al. Solving of closest critical point on voltage stability limit surface based on second-order standard approximation of limit surface[J].
Automation of Electric Power Systems,
2016,
40(2):69-76., articleTitle=Solving of closest critical point on voltage stability limit surface based on second-order standard approximation of limit surface, refAbstract=null)], funds=[Fund(id=1207275583948542542, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, awardId=52107098, language=CN, fundingSource=国家自然科学基金(52107098), fundOrder=null, country=null), Fund(id=1207275584040817233, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, awardId=SJCX22_1085, language=CN, fundingSource=江苏省研究生科研与实践创新计划项目(SJCX22_1085), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1207275577283793237, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, xref=null, ext=[AuthorCompanyExt(id=1207275577287987542, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, companyId=1207275577283793237, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing 211167,Jiangsu,China), AuthorCompanyExt(id=1207275577296376151, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, companyId=1207275577283793237, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=南京工程学院 电力工程学院,江苏 南京 211167)])], figs=[ArticleFig(id=1207275581876556273, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=EN, label=Fig.1, caption=
Principle of quadratic approximation method, figureFileSmall=S00Qe1gSeR3lKPgTvm21wA==, figureFileBig=S7ElI+RQlT7ufKoObQA37w==, tableContent=null), ArticleFig(id=1207275582010774006, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=CN, label=图1, caption=
二次型迭代逼近法原理, figureFileSmall=S00Qe1gSeR3lKPgTvm21wA==, figureFileBig=S7ElI+RQlT7ufKoObQA37w==, tableContent=null), ArticleFig(id=1207275582115631611, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=EN, label=Fig.2, caption=
Steps of quadratic approximation method, figureFileSmall=dtklBsL4ZetMmilw/gyFRw==, figureFileBig=eVXT2VKWw837cr68I0yZMA==, tableContent=null), ArticleFig(id=1207275582182740482, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=CN, label=图2, caption=
二次型迭代逼近法步骤, figureFileSmall=dtklBsL4ZetMmilw/gyFRw==, figureFileBig=eVXT2VKWw837cr68I0yZMA==, tableContent=null), ArticleFig(id=1207275582275015177, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=EN, label=Fig.3, caption=
IEEE 14-bus system node curves, figureFileSmall=b9NC+6sQkXS02o8ELp5b2g==, figureFileBig=hTijKrSwO2yB6TS3ksw87Q==, tableContent=null), ArticleFig(id=1207275582388261385, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=CN, label=图3, caption=
IEEE 14节点系统各节点 曲线, figureFileSmall=b9NC+6sQkXS02o8ELp5b2g==, figureFileBig=hTijKrSwO2yB6TS3ksw87Q==, tableContent=null), ArticleFig(id=1207275582497313294, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=EN, label=Fig.4, caption=
The impact of different growth gradients on SNB, figureFileSmall=iMzYnxjkTnp3Lf4S6bPQQw==, figureFileBig=HUhxap+8GdUvzwtj8WH9XA==, tableContent=null), ArticleFig(id=1207275582585393686, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=CN, label=图4, caption=
不同增长梯度对SNB的影响, figureFileSmall=iMzYnxjkTnp3Lf4S6bPQQw==, figureFileBig=HUhxap+8GdUvzwtj8WH9XA==, tableContent=null), ArticleFig(id=1207275582715417113, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=EN, label=Fig.5, caption=
Change curves of minimum singular value of quadratic form approximation normal coefficient matrix, figureFileSmall=1xBieO0ghUxC17lxUEjlgA==, figureFileBig=/mbMufpLtCdRzhjJFdjZNg==, tableContent=null), ArticleFig(id=1207275582895772197, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=CN, label=图5, caption=
二次型迭代逼近法系数矩阵最小奇异值变化曲线, figureFileSmall=1xBieO0ghUxC17lxUEjlgA==, figureFileBig=/mbMufpLtCdRzhjJFdjZNg==, tableContent=null), ArticleFig(id=1207275582983852588, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=EN, label=Fig.6, caption=
Comparison of results of three methods, figureFileSmall=rcXGSV+x/ROCaYRYfAGqTQ==, figureFileBig=LSMazETdcVXm8BqNMKfbBA==, tableContent=null), ArticleFig(id=1207275583105487406, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=CN, label=图6, caption=
3种方法结果对比, figureFileSmall=rcXGSV+x/ROCaYRYfAGqTQ==, figureFileBig=LSMazETdcVXm8BqNMKfbBA==, tableContent=null), ArticleFig(id=1207275583214539315, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=EN, label=Tab.1, caption=
IEEE 14-bus system node iteration data
, figureFileSmall=null, figureFileBig=null, tableContent=
| 节点 | 迭代次数 | | Pmax(标幺值) | (标幺植) | |
| 5号 | 1 | 2.556 | 5.112 | 0.820 | 0.250 |
| 2 | 2.800 | 5.600 | 0.760 | 0.078 |
| 3 | 3.012 | 6.024 | 0.710 | 0.070 |
| 4 | 3.134 | 6.268 | 0.680 | 0.044 |
| 5 | 3.134 | 6.268 | 0.680 | 0.000 |
| 9号 | 1 | 2.330 | 4.660 | 0.850 | 0.176 |
| 2 | 2.656 | 5.312 | 0.790 | 0.075 |
| 3 | 2.934 | 5.868 | 0.740 | 0.067 |
| 4 | 3.023 | 6.046 | 0.719 | 0.029 |
| 5 | 3.023 | 6.046 | 0.719 | 0.000 |
| 14号 | 1 | 2.522 | 5.044 | 0.783 | 0.277 |
| 2 | 2.812 | 5.624 | 0.741 | 0.056 |
| 3 | 3.089 | 6.178 | 0.712 | 0.041 |
| 4 | 3.234 | 6.468 | 0.694 | 0.025 |
| 5 | 3.234 | 6.468 | 0.694 | 0.000 |
), ArticleFig(id=1207275583306814007, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=CN, label=表1, caption=
IEEE 14系统各节点迭代数据
, figureFileSmall=null, figureFileBig=null, tableContent=
| 节点 | 迭代次数 | | Pmax(标幺值) | (标幺植) | |
| 5号 | 1 | 2.556 | 5.112 | 0.820 | 0.250 |
| 2 | 2.800 | 5.600 | 0.760 | 0.078 |
| 3 | 3.012 | 6.024 | 0.710 | 0.070 |
| 4 | 3.134 | 6.268 | 0.680 | 0.044 |
| 5 | 3.134 | 6.268 | 0.680 | 0.000 |
| 9号 | 1 | 2.330 | 4.660 | 0.850 | 0.176 |
| 2 | 2.656 | 5.312 | 0.790 | 0.075 |
| 3 | 2.934 | 5.868 | 0.740 | 0.067 |
| 4 | 3.023 | 6.046 | 0.719 | 0.029 |
| 5 | 3.023 | 6.046 | 0.719 | 0.000 |
| 14号 | 1 | 2.522 | 5.044 | 0.783 | 0.277 |
| 2 | 2.812 | 5.624 | 0.741 | 0.056 |
| 3 | 3.089 | 6.178 | 0.712 | 0.041 |
| 4 | 3.234 | 6.468 | 0.694 | 0.025 |
| 5 | 3.234 | 6.468 | 0.694 | 0.000 |
), ArticleFig(id=1207275583386505787, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=EN, label=Tab.2, caption=
Comparison of data of three methods
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| 节点系统 | 方法 | | (标幺植) | Pmax/ MW | 计算 用时/ s |
IEEE 14 (9号 节点) | 二次型逼近法 | 3.023 | 0.719 | 181.38 | 0.049 3 |
连续 潮流法 | 3.034 | 0.718 | 182.04 | 4.481 0 |
| 导纳法 | 2.900 | 0.700 | 174.00 | 0.152 8 |
IEEE 118(66号 节点) | 二次型逼近法 | 1.435 | 0.855 | 1 139.15 | 0.065 4 |
连续 潮流法 | 1.466 | 0.850 | 1 149.34 | 3.896 6 |
| 导纳法 | 1.368 | 0.833 | 1 072.51 | 0.267 5 |
), ArticleFig(id=1207275583491363393, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=CN, label=表2, caption=
3种方法各数据对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 节点系统 | 方法 | | (标幺植) | Pmax/ MW | 计算 用时/ s |
IEEE 14 (9号 节点) | 二次型逼近法 | 3.023 | 0.719 | 181.38 | 0.049 3 |
连续 潮流法 | 3.034 | 0.718 | 182.04 | 4.481 0 |
| 导纳法 | 2.900 | 0.700 | 174.00 | 0.152 8 |
IEEE 118(66号 节点) | 二次型逼近法 | 1.435 | 0.855 | 1 139.15 | 0.065 4 |
连续 潮流法 | 1.466 | 0.850 | 1 149.34 | 3.896 6 |
| 导纳法 | 1.368 | 0.833 | 1 072.51 | 0.267 5 |
), ArticleFig(id=1207275583575249477, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=EN, label=Tab.3, caption=
IEEE 118-bus system node 88 calculation results
, figureFileSmall=null, figureFileBig=null, tableContent=
| | (标幺值) | Pmax/MW | 计算用时/s |
| 连续潮流法 | 1.535 | 0.832 | 736.80 | 4.785 0 |
| 二次型逼近法 | 1.534 | 0.834 | 736.32 | 0.063 5 |
| 戴维南等值法[19] | 1.520 | 0.850 | 729.60 | 0.135 4 |
| 增补P'Q点法[22] | 1.531 | 0.842 | 734.88 | 0.235 4 |
), ArticleFig(id=1207275583650746953, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1206314802058707253, language=CN, label=表3, caption=
IEEE 118节点系统88号节点计算结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| | (标幺值) | Pmax/MW | 计算用时/s |
| 连续潮流法 | 1.535 | 0.832 | 736.80 | 4.785 0 |
| 二次型逼近法 | 1.534 | 0.834 | 736.32 | 0.063 5 |
| 戴维南等值法[19] | 1.520 | 0.850 | 729.60 | 0.135 4 |
| 增补P'Q点法[22] | 1.531 | 0.842 | 734.88 | 0.235 4 |
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