Article(id=1193220120597197019, tenantId=1146029695717560320, journalId=1190306094246359042, issueId=1193220111252287672, articleNumber=null, orderNo=null, doi=10.19595/j.cnki.1000-6753.tces.242081, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1731945600000, receivedDateStr=2024-11-19, revisedDate=1737302400000, revisedDateStr=2025-01-20, acceptedDate=null, acceptedDateStr=null, onlineDate=1762415445708, onlineDateStr=2025-11-06, pubDate=1749484800000, pubDateStr=2025-06-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1762415445708, onlineIssueDateStr=2025-11-06, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1762415445708, creator=13701087609, updateTime=1762415445708, updator=13701087609, issue=Issue{id=1193220111252287672, tenantId=1146029695717560320, journalId=1190306094246359042, year='2025', volume='40', issue='11', pageStart='3339', pageEnd='3690', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1762415443479, creator=13701087609, updateTime=1762417281749, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1193227821549056568, tenantId=1146029695717560320, journalId=1190306094246359042, issueId=1193220111252287672, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1193227821549056569, tenantId=1146029695717560320, journalId=1190306094246359042, issueId=1193220111252287672, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=3427, endPage=3445, ext={EN=ArticleExt(id=1193220121033404639, articleId=1193220120597197019, tenantId=1146029695717560320, journalId=1190306094246359042, language=EN, title=SISO dq Impedance Stability Criterion and Closed-Loop Pole Sensitivity Analysis of Multi-Converter Grid-Connected System, columnId=null, journalTitle=Transactions of China Electrotechnical Society, columnName=null, runingTitle=null, highlight=null, articleAbstract=
As the penetration rate of renewable energy resources continues to increase, the traditional power system based on synchronous generators is evolving into a power system based on diversified power electronic equipment. The small disturbance stability analysis problem of multi-converter grid-connected system has attracted widespread attention. State-space model and impedance-based model are two main small disturbance stability analysis methods. Being as the white-box method, state-space model can be difficult to apply in practice because the differential equations describing the controllers of converters are not generally openly available due to commercial confidentiality. Impedance models have been popular in the field of power electronics for analysis of interactions between grid and converters. However, applying it directly to the stability analysis of multi-converter system will make the analysis process very complicated. Generally, the existing state-space and the impedance method still have room for improvement for the small disturbance stability analysis and sensitivity analysis of the oscillation mode of each converter.
Firstly, this paper proposes a single-input single-output (SISO) dq impedance stability criterion for analyzing the small disturbance stability of the multi-converter grid-connected system. Secondly, based on the formula of the stability criterion proposed, an expression for calculating the closed-loop pole of the system is derived. Because this formula is only a scalar function, the accuracy can be guaranteed for the usage of vector fitting (VF) method. Furthermore, a method for analyzing the sensitivity of oscillation modes to the impedance/admittance of each converter is proposed. This method can effectively evaluate the influence of different converters on the oscillation modes and help identify the dominant converter that causes oscillations. Finally, the accuracy of the proposed method is verified by Matlab/Simulink simulation and hardware-in-the-loop experiment.
The results are as follows: firstly, the proposed multi-converter system model can be used to represent the converter grid-connected system with any network structure and any number of grid-forming and grid-following converters. Based on the proposed method, it can be used to analyze the overall stability of the system as well as the influence of each converter on the system stability. Secondly, the proposed sensitivity analysis method can be used for evaluating which power converters are more sensitive to the close-loop poles and have a significant contribution to the harmonic instability.
The following conclusions can be drawn from the above results: (1) A recursive stability evaluation method for analyzing the stability of the multi-converter grid-connected system based on SISO dq impedance ratio is achieved, and a complete stability evaluation procedure is provided. Compared with the stability analysis method based on generalized Nyquist criterion, the stability analysis problem of a MIMO system is transformed into the stability analysis of a series of SISO systems, and the stability analysis of the whole system can be realized only by the impedance ratio of d-axis and q-axis in the stability analysis process. Because the SISO impedance ratio is used for stability analysis, the solution of the eigenvalues of the high-order return rate matrix required by the traditional method can be avoided, and the complexity of Nyquist plot analysis required for MIMO system can be effectively reduced. (2) In the proposed impedance stability criterion, dq impedance is adopted to model the VCI while dq admittance is used to describe the CCI, so the complicated procedure for obtaining the RHP open loop poles can be avoided. (3) Based on the proposed stability criterion proposed, an expression for calculating the closed-loop pole of the system is derived. Since this paper adopts dq coordinate system for modeling and derivation, compared with the sequential impedance model, the transfer function matrix elements can be guaranteed to be rational fractions, so the closed-loop poles can be obtained by VF method. (4) The sensitivity formula of the system's closed-loop poles on the dq admittance/impedance of the converter in the system is derived in this paper. Combining with the residual of the closed-loop poles obtained by the VF method, it can be used to analyze the influence of each converter on the key modes in the system. Therefore, it is helpful to identify the source that causes oscillatory instability.
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随着新能源渗透率的不断提高,以同步发电机为主的传统电力系统正向以多样化电力电子装备为主的新型电力系统转变,多变流器并网系统的小干扰稳定性问题受到广泛关注。然而,状态空间法和传统阻抗法在分析多变流器系统稳定性时仍存在复杂度高及难以准确评估闭环极点关于各变流器灵敏度的问题。针对上述问题,该文首先提出一种用于分析多变流器并网系统小干扰稳定性的单输入单输出(SISO)dq阻抗判据,该判据可将多输入多输出系统(MIMO)转换为若干SISO系统以简化稳定性分析过程,相比于MIMO系统分析方法,其在避免求解高维矩阵特征值的同时降低了奈奎斯特曲线分析的复杂度,同时该方法还具有从物理角度揭示振荡失稳机理的优点。然后,基于所提出的稳定性判据公式,进一步提出一种用于求取闭环极点关于各变流器阻抗/导纳灵敏度的分析方法,该方法可有效评估系统中不同变流器对振荡模态的影响程度,有助于实现诱发系统振荡的主导变流器的辨识。最后,通过Matlab/Simulink仿真和硬件在环实验验证了所提方法的正确性。
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吴柳颖 女, 2002 年生,硕士研究生,研究方向为新能源发电系统建模、控制与稳定性分析。E-mail:18032200286@163.com
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吴柳颖 女, 2002 年生,硕士研究生,研究方向为新能源发电系统建模、控制与稳定性分析。E-mail:18032200286@163.com
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Diagram of multi-converter grid-tied system, figureFileSmall=XHKqNAp3YVkCU8jZJyilFg==, figureFileBig=LqDFl2AriENZ7O2M1FRqDg==, tableContent=null), ArticleFig(id=1193221254288207948, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图1, caption=
多变流器并网系统示意图, figureFileSmall=XHKqNAp3YVkCU8jZJyilFg==, figureFileBig=LqDFl2AriENZ7O2M1FRqDg==, tableContent=null), ArticleFig(id=1193221254422425677, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.2, caption=
Equivalent diagram of multi-converter grid-connected system, figureFileSmall=1I6fs5V3JRLpnyPAx/Bpog==, figureFileBig=/dumNJVgld6qXp4YLwZP/g==, tableContent=null), ArticleFig(id=1193221254493728846, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图2, caption=
多变流器并网系统等效框图, figureFileSmall=1I6fs5V3JRLpnyPAx/Bpog==, figureFileBig=/dumNJVgld6qXp4YLwZP/g==, tableContent=null), ArticleFig(id=1193221254556643407, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.3, caption=
Stability analysis procedure for the multi-converters grid-tied system, figureFileSmall=xkMg8bCu3ykntvgR1VkpAA==, figureFileBig=x8ybrR3ygQcXFraN3v3iyw==, tableContent=null), ArticleFig(id=1193221254686666832, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图3, caption=
多变流器并网系统的小干扰稳定性分析步骤, figureFileSmall=xkMg8bCu3ykntvgR1VkpAA==, figureFileBig=x8ybrR3ygQcXFraN3v3iyw==, tableContent=null), ArticleFig(id=1193221254753775697, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.4, caption=
Topology of multi-converter grid-tied system, figureFileSmall=JhTtl0tLdzMOUo+z0s3VUQ==, figureFileBig=Dj5PVW5+xtm6MLROGIb4lQ==, tableContent=null), ArticleFig(id=1193221254820884562, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图4, caption=
多变流器并网系统拓扑结构, figureFileSmall=JhTtl0tLdzMOUo+z0s3VUQ==, figureFileBig=Dj5PVW5+xtm6MLROGIb4lQ==, tableContent=null), ArticleFig(id=1193221254887993427, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.5, caption=
Nyquist plots of SISO dq impedance ratio, figureFileSmall=1bCilayjgPf9G7+j5AqmWg==, figureFileBig=eOoIz9E/DZMXe7aWl7CFdw==, tableContent=null), ArticleFig(id=1193221254976073812, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图5, caption=
稳定性分析步骤中SISO dq阻抗比的奈奎斯特曲线, figureFileSmall=1bCilayjgPf9G7+j5AqmWg==, figureFileBig=eOoIz9E/DZMXe7aWl7CFdw==, tableContent=null), ArticleFig(id=1193221255072542805, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.6, caption=
Output current of each CCI when different converter connects to the grid, figureFileSmall=0qhxYhfnxss1RQWAmOq3FA==, figureFileBig=0YFQCwcuG5ZtlpX79Y3k2Q==, tableContent=null), ArticleFig(id=1193221255143845974, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图6, caption=
分阶段投入4个CCI时各变流器的输出电流波形, figureFileSmall=0qhxYhfnxss1RQWAmOq3FA==, figureFileBig=0YFQCwcuG5ZtlpX79Y3k2Q==, tableContent=null), ArticleFig(id=1193221255236120663, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.7, caption=
FFT analysis of grid current, figureFileSmall=ieAyW2vSpTHtUnu3RumQ2g==, figureFileBig=TblsZpdYMTLdFsa+jWAvcw==, tableContent=null), ArticleFig(id=1193221255320006744, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图7, caption=
并网电流的FFT分析, figureFileSmall=ieAyW2vSpTHtUnu3RumQ2g==, figureFileBig=TblsZpdYMTLdFsa+jWAvcw==, tableContent=null), ArticleFig(id=1193221255374532697, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.8, caption=
Bode plots of SISO dq impedance ratio of the system containing CCI 1~3, figureFileSmall=zPmhWA5aJpiAEGIrRM87oQ==, figureFileBig=TLNPfAd4vXGLcbHCyGHK0A==, tableContent=null), ArticleFig(id=1193221255441641562, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图8, caption=
CCI 1~3并网系统的dq阻抗比伯德图, figureFileSmall=zPmhWA5aJpiAEGIrRM87oQ==, figureFileBig=TLNPfAd4vXGLcbHCyGHK0A==, tableContent=null), ArticleFig(id=1193221255504556123, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.9, caption=
Sensitivity of unstable poles with respect to dq admittances of different converters, figureFileSmall=h0ZjqxWjgpWhRSvxZ4bznw==, figureFileBig=U0lQ5HRILAHW/BJTUro79w==, tableContent=null), ArticleFig(id=1193221255559082076, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图9, caption=
不稳定闭环极点关于四个CCI的dq阻抗灵敏度, figureFileSmall=h0ZjqxWjgpWhRSvxZ4bznw==, figureFileBig=U0lQ5HRILAHW/BJTUro79w==, tableContent=null), ArticleFig(id=1193221255613608029, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.10, caption=
Output current of each converter when disconnecting CCI 1, figureFileSmall=oWBGzi+Sw9BbA1Xnuy+95A==, figureFileBig=e9jimB20wp7t56KCMn5z+A==, tableContent=null), ArticleFig(id=1193221255684911198, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图10, caption=
切除CCI 1下的各变流器输出电流波形, figureFileSmall=oWBGzi+Sw9BbA1Xnuy+95A==, figureFileBig=e9jimB20wp7t56KCMn5z+A==, tableContent=null), ArticleFig(id=1193221255752020063, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.11, caption=
Output current of each converter when disconnecting CCI 3, figureFileSmall=gY+3HI2LkvtheX/Zfz4euw==, figureFileBig=Ycgx8klrnvkvfuFhC51+2Q==, tableContent=null), ArticleFig(id=1193221255806546016, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图11, caption=
切除CCI 3的各变流器输出电流波形, figureFileSmall=gY+3HI2LkvtheX/Zfz4euw==, figureFileBig=Ycgx8klrnvkvfuFhC51+2Q==, tableContent=null), ArticleFig(id=1193221255865266273, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.12, caption=
FFT analysis of grid current when disconnecting different converter, figureFileSmall=5MljyNPvLf/0wBmjjMBupg==, figureFileBig=WXwaGPhNePAlmMbRwn5QEA==, tableContent=null), ArticleFig(id=1193221255936569442, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图12, caption=
切除各变流器的电网电流FFT分析结果, figureFileSmall=5MljyNPvLf/0wBmjjMBupg==, figureFileBig=WXwaGPhNePAlmMbRwn5QEA==, tableContent=null), ArticleFig(id=1193221256016261219, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.13, caption=
HIL simulation platform, figureFileSmall=ZXkU0spdcXRx3XjuePFALw==, figureFileBig=O/vzDeiLI1vG0bG4HIjspA==, tableContent=null), ArticleFig(id=1193221256087564388, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图13, caption=
硬件在环实验平台, figureFileSmall=ZXkU0spdcXRx3XjuePFALw==, figureFileBig=O/vzDeiLI1vG0bG4HIjspA==, tableContent=null), ArticleFig(id=1193221256167256165, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.14, caption=
Waveforms of phase A currents of converters, figureFileSmall=M15Ss5bKVLsgnZzuBnXMAQ==, figureFileBig=45W6meG413Uxvl/jDKSZ1w==, tableContent=null), ArticleFig(id=1193221256255336550, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图14, caption=
各变流器A相输出电流时域波形, figureFileSmall=M15Ss5bKVLsgnZzuBnXMAQ==, figureFileBig=45W6meG413Uxvl/jDKSZ1w==, tableContent=null), ArticleFig(id=1193221256347611239, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.15, caption=
FFT analysis of grid current, figureFileSmall=a3zu7mpzGhvOnMmJLqOKhg==, figureFileBig=YXW0TK5EubaA4OK82wdkGg==, tableContent=null), ArticleFig(id=1193221256414720104, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图15, caption=
并网电流的FFT分析结果, figureFileSmall=a3zu7mpzGhvOnMmJLqOKhg==, figureFileBig=YXW0TK5EubaA4OK82wdkGg==, tableContent=null), ArticleFig(id=1193221256477634665, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.16, caption=
Sensitivity of the unstable pole with respect to dq admittances of different converters, figureFileSmall=GHUx6CUpjLbSbPO0BSl+8w==, figureFileBig=jhyeyLb0Z72T6hcNetr70A==, tableContent=null), ArticleFig(id=1193221256532160618, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图16, caption=
不稳定极点关于4个CCI的dq阻抗的灵敏度, figureFileSmall=GHUx6CUpjLbSbPO0BSl+8w==, figureFileBig=jhyeyLb0Z72T6hcNetr70A==, tableContent=null), ArticleFig(id=1193221256590880875, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.17, caption=
Waveforms of grid current under three scenarios, figureFileSmall=UKf8VsiUAtnhEhHYaXbQLg==, figureFileBig=gw9gDyFJW5e4hwaJxgfbGA==, tableContent=null), ArticleFig(id=1193221256657989740, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图17, caption=
三种场景下的并网电流波形, figureFileSmall=UKf8VsiUAtnhEhHYaXbQLg==, figureFileBig=gw9gDyFJW5e4hwaJxgfbGA==, tableContent=null), ArticleFig(id=1193221256720904301, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.18, caption=
Nyquist plot of SISO dq impedance ratio in steps of stability analysis, figureFileSmall=T1wAXOMwnSfdXU/CZc0c2Q==, figureFileBig=pIvjzvS2bD+8Khda5Aw/Bw==, tableContent=null), ArticleFig(id=1193221256842539118, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图18, caption=
稳定性分析各步骤dq阻抗比奈奎斯特曲线, figureFileSmall=T1wAXOMwnSfdXU/CZc0c2Q==, figureFileBig=pIvjzvS2bD+8Khda5Aw/Bw==, tableContent=null), ArticleFig(id=1193221257798840431, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.19, caption=
Sensitivity of unstable poles with respect to dq impedances of different converters, figureFileSmall=KL3cXM+gmnRS5O1KjY16BA==, figureFileBig=crBpBCv+o9cFg1eGCPuMXA==, tableContent=null), ArticleFig(id=1193221257899503728, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图19, caption=
不稳定极点关于4个变流器dq导纳/阻抗的灵敏度, figureFileSmall=KL3cXM+gmnRS5O1KjY16BA==, figureFileBig=crBpBCv+o9cFg1eGCPuMXA==, tableContent=null), ArticleFig(id=1193221257995972721, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Fig.20, caption=
Waveforms of grid current when disconnecting VSG 2 or CCI 1 from system, figureFileSmall=38EdUYXUn6NpowujTB7ylQ==, figureFileBig=3TyDRVEW8J1Df2EfSxXZBg==, tableContent=null), ArticleFig(id=1193221258125996146, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=图20, caption=
切除VSG 2和切除CCI 1下的并网电流波形, figureFileSmall=38EdUYXUn6NpowujTB7ylQ==, figureFileBig=3TyDRVEW8J1Df2EfSxXZBg==, tableContent=null), ArticleFig(id=1193221258188910707, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=App.Fig.1, caption=
Theoretical frequency characteristics and simulation results of SISO dq impedance of CCI, figureFileSmall=Iwng0IYnNQpYmnJ3KGKFWQ==, figureFileBig=X7Udca3CAH15L617SS0cig==, tableContent=null), ArticleFig(id=1193221258256019572, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=附图1, caption=
CCI的SISO dq阻抗理论公式计算及扫频结果, figureFileSmall=Iwng0IYnNQpYmnJ3KGKFWQ==, figureFileBig=X7Udca3CAH15L617SS0cig==, tableContent=null), ArticleFig(id=1193221258331517045, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=App.Fig.2, caption=
Theoretical frequency characteristics and simulation results of SISO dq impedance of VCI, figureFileSmall=s2T5yE6ZPvNzzl7FHqp9iw==, figureFileBig=Cg+8hYHIHfybi/V1ywzc3g==, tableContent=null), ArticleFig(id=1193221258407014519, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=附图2, caption=
VCI的SISO dq阻抗理论公式计算及扫频结果, figureFileSmall=s2T5yE6ZPvNzzl7FHqp9iw==, figureFileBig=Cg+8hYHIHfybi/V1ywzc3g==, tableContent=null), ArticleFig(id=1193221258495094904, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Tab.1, caption=
Results of stability analysis
, figureFileSmall=null, figureFileBig=null, tableContent=
| 步骤 | | 零点 | RHP极点数 | 稳定性 |
| 1 | 0 | | 0 | 稳定 |
| 2 | 0 | | 0 | 稳定 |
| 3 | 2 | | 2 | 临界稳定 |
| 4 | 0 | | 2 | 不稳定 |
), ArticleFig(id=1193221258566398073, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=表1, caption=
稳定性分析结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 步骤 | | 零点 | RHP极点数 | 稳定性 |
| 1 | 0 | | 0 | 稳定 |
| 2 | 0 | | 0 | 稳定 |
| 3 | 2 | | 2 | 临界稳定 |
| 4 | 0 | | 2 | 不稳定 |
), ArticleFig(id=1193221258637701242, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=Tab. 2, caption=
Results of stability analysis in HIL experiment 2
, figureFileSmall=null, figureFileBig=null, tableContent=
| 系统组成 | 电网电感 Lg/mH | 图18中奈奎斯特曲线顺时针绕(-1, j0)圈数 | 闭环极点数量 | 稳定性 |
| zero(|D1~4|) | $-N^{(-1, \mathrm{j} 0)}\left[\lambda\left(\boldsymbol{R}_{5, \mathrm{dq}}^{\mathrm{mc}}\right)\right]$ | $-N^{(-1, \mathrm{j} 0)}\left[\lambda\left(\boldsymbol{R}_{6, \mathrm{dq}}^{\mathrm{mc}}\right)\right]$ |
| 4个CCI+1个VSG | 1.14 | 0 | 2,对应图18a | | | 不稳定 |
| 4个CCI+2个VSG | 1.14 | 0 | 2,对应图18b | -2,对应图18c | | 稳定 |
| 4个CCI+2个VSG | 0.6 | 0 | 2,对应图18d | 0,对应图18e | | 不稳定 |
| 4个CCI+1个VSG | 0.6 | 0 | 0,对应图18f | | | 稳定 |
), ArticleFig(id=1193221258725781627, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=表2, caption=
HIL实验2稳定性分析结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 系统组成 | 电网电感 Lg/mH | 图18中奈奎斯特曲线顺时针绕(-1, j0)圈数 | 闭环极点数量 | 稳定性 |
| zero(|D1~4|) | $-N^{(-1, \mathrm{j} 0)}\left[\lambda\left(\boldsymbol{R}_{5, \mathrm{dq}}^{\mathrm{mc}}\right)\right]$ | $-N^{(-1, \mathrm{j} 0)}\left[\lambda\left(\boldsymbol{R}_{6, \mathrm{dq}}^{\mathrm{mc}}\right)\right]$ |
| 4个CCI+1个VSG | 1.14 | 0 | 2,对应图18a | | | 不稳定 |
| 4个CCI+2个VSG | 1.14 | 0 | 2,对应图18b | -2,对应图18c | | 稳定 |
| 4个CCI+2个VSG | 0.6 | 0 | 2,对应图18d | 0,对应图18e | | 不稳定 |
| 4个CCI+1个VSG | 0.6 | 0 | 0,对应图18f | | | 稳定 |
), ArticleFig(id=1193221258818056316, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=App.Tab.1, caption=
Parameters of power network
, figureFileSmall=null, figureFileBig=null, tableContent=
电气 参数 | 线路 阻抗 | 算例4.1中 电阻和电感值 | 算例4.2中 电阻和电感值 | 算例4.3中 电阻和电感值 |
线路 阻抗 | ZLine1 | , | , | , |
| ZLine2 | , | , | , |
| ZLine3 | , | , | , |
| ZLine4 | , | , | , |
| ZLine5 | — | — | , |
| ZLine6 | — | — | , |
| ZLine7 | , | , | , |
| ZLine8 | , | , | , |
| ZLine9 | , | , | , |
| ZLine10 | , | , | , |
| ZLg | 具体见正文 | 具体见正文 | 具体见正文 |
), ArticleFig(id=1193221258897748093, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=附表1, caption=
电力网络线路参数
, figureFileSmall=null, figureFileBig=null, tableContent=
电气 参数 | 线路 阻抗 | 算例4.1中 电阻和电感值 | 算例4.2中 电阻和电感值 | 算例4.3中 电阻和电感值 |
线路 阻抗 | ZLine1 | , | , | , |
| ZLine2 | , | , | , |
| ZLine3 | , | , | , |
| ZLine4 | , | , | , |
| ZLine5 | — | — | , |
| ZLine6 | — | — | , |
| ZLine7 | , | , | , |
| ZLine8 | , | , | , |
| ZLine9 | , | , | , |
| ZLine10 | , | , | , |
| ZLg | 具体见正文 | 具体见正文 | 具体见正文 |
), ArticleFig(id=1193221258990022782, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=App.Tab.2, caption=
Electrical and control parameters of CCI in simulation
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变流器 | 参数 | 数值 |
| CCI 1~4 | 直流电压控制器 | , |
| 滤波电感 | , |
| 额定功率 | |
| 额定交流电压 | |
| 直流电压 | |
| CCI 1 | 电流内环控制器 | , |
| 锁相环控制器 | , |
| CCI 2 | 电流内环控制器 | , |
| 锁相环控制器 | , |
| CCI 3 | 电流内环控制器 | , |
| 锁相环控制器 | , |
| CCI 4 | 电流内环控制器 | , |
| 锁相环控制器 | , |
), ArticleFig(id=1193221259078103167, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=附表2, caption=
CCI电气和控制仿真参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变流器 | 参数 | 数值 |
| CCI 1~4 | 直流电压控制器 | , |
| 滤波电感 | , |
| 额定功率 | |
| 额定交流电压 | |
| 直流电压 | |
| CCI 1 | 电流内环控制器 | , |
| 锁相环控制器 | , |
| CCI 2 | 电流内环控制器 | , |
| 锁相环控制器 | , |
| CCI 3 | 电流内环控制器 | , |
| 锁相环控制器 | , |
| CCI 4 | 电流内环控制器 | , |
| 锁相环控制器 | , |
), ArticleFig(id=1193221259153600640, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=App.Tab.3, caption=
Electrical and control parameters adjustment of CCI in HIL experiment 1
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变流器 | 参数 | 数值 |
| CCI 1 | 电流内环控制器 | , |
| 锁相环控制器 | , |
| CCI 2 | 电流内环控制器 | , |
| 锁相环控制器 | , |
| CCI 3 | 电流内环控制器 | , |
| 锁相环控制器 | , |
| CCI 4 | 电流内环控制器 | , |
| 锁相环控制器 | , |
), ArticleFig(id=1193221259241681025, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=附表3, caption=
HIL实验1中CCI的电气和控制参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变流器 | 参数 | 数值 |
| CCI 1 | 电流内环控制器 | , |
| 锁相环控制器 | , |
| CCI 2 | 电流内环控制器 | , |
| 锁相环控制器 | , |
| CCI 3 | 电流内环控制器 | , |
| 锁相环控制器 | , |
| CCI 4 | 电流内环控制器 | , |
| 锁相环控制器 | , |
), ArticleFig(id=1193221259321372802, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=EN, label=App.Tab.4, caption=
Electrical and control parameters of CCI and VSG in HIL experiment 2
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变流器 | 参数 | 数值 |
| CCI 1~4 | 直流电压控制器 | , |
| 电流内环控制器 | , |
| 锁相环控制器 | , |
| 滤波电感 | , |
| 额定功率 | |
| 额定交流电压 | |
| 直流电压 | |
| VSG 1~2 | 虚拟惯量 | |
| 有功阻尼系数 | |
| 无功功率系数 | |
| 电压控制系数 | , |
| 电流控制系数 | , |
| 滤波电感 | , |
| 额定功率 | |
| 额定交流电压 | |
| 直流电压 | |
), ArticleFig(id=1193221259405258883, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1193220120597197019, language=CN, label=附表4, caption=
HIL实验2中CCI和VSG的电气和控制参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变流器 | 参数 | 数值 |
| CCI 1~4 | 直流电压控制器 | , |
| 电流内环控制器 | , |
| 锁相环控制器 | , |
| 滤波电感 | , |
| 额定功率 | |
| 额定交流电压 | |
| 直流电压 | |
| VSG 1~2 | 虚拟惯量 | |
| 有功阻尼系数 | |
| 无功功率系数 | |
| 电压控制系数 | , |
| 电流控制系数 | , |
| 滤波电感 | , |
| 额定功率 | |
| 额定交流电压 | |
| 直流电压 | |
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