Article(id=1146828032427298965, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1146828028623066093, articleNumber=null, orderNo=null, doi=10.13234/j.issn.2095-2805.2025.1.151, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1675612800000, receivedDateStr=2023-02-06, revisedDate=null, revisedDateStr=null, acceptedDate=1680278400000, acceptedDateStr=2023-04-01, onlineDate=1751354709964, onlineDateStr=2025-07-01, pubDate=1738166400000, pubDateStr=2025-01-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1751354709964, onlineIssueDateStr=2025-07-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=1752073878525, onlineFirstDateStr=2025-07-09, sourceXml=null, magXml=null, createTime=1751354709964, creator=13701087609, updateTime=1751354709964, updator=13701087609, issue=Issue{id=1146828028623066093, tenantId=1146029695717560320, journalId=1146031654075715584, year='2025', volume='23', issue='1', pageStart='1', pageEnd='258', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1751354709057, creator=13701087609, updateTime=1765499536223, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1206155733847044492, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1146828028623066093, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1206155733847044493, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1146828028623066093, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=151, endPage=159, ext={EN=ArticleExt(id=1149844444402418473, articleId=1146828032427298965, tenantId=1146029695717560320, journalId=1146031654075715584, language=EN, title=Impedance Modeling and Stability Analysis of Multi-bus Cascaded Subsea DC Power Supply System, columnId=1152281496049037440, journalTitle=Journal of Power Supply, columnName=Power System, runingTitle=null, highlight=null, articleAbstract=
With the scale expansion of a subsea observation network, the stability of its high-power power supply system has attracted attention. First, the impedance models of key parts in the subsea power supply system are established. Considering the characteristics of high power electronic penetration rate, multi-bus cascading and adjacent bus interactive coupling of the subsea DC power supply system, the stability and influencing factors of the system are explored by using the step-by-step analysis method. The analysis result shows that the integral parameter of the controller is the dominant parameter that leads to the instability of the Buck converter, and the proportional parameter of the controller is the dominant parameter that results in the instability of the junction box subsystem. Both an increase in the impedance parameter of the optoelectronic composite cable and a decrease in the inductance parameter are beneficial to improving the system stability. The simulation results based on the PLECS simulation software verify the stability analysis results.
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随着海底观测网规模的扩大,其大功率供电系统的稳定性问题受到关注。基于此,建立了海底供电系统关键部件的阻抗模型,针对海底直流供电系统高电力电子渗透率、多母线级联且邻级母线交互耦合的特点,采用逐级分析法探究海底直流供电系统稳定性及其影响因素。分析结果表明:控制器积分参数是Buck变换器失稳的主导参数,控制器比例参数是接驳盒子系统失稳的主导参数,光电复合海缆电阻参数的增大及电感参数的减小均可有效提升系统的稳定性。基于PLECS仿真软件的仿真结果验证了稳定性分析结果的正确性。
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帅智康(1982— ),男,博士,教授。研究方向:先进电能质量控制理论、微电网的稳定性分析及控制、电力电子技术及应用。E-mail:szk@hun.edu.cn。
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陈浩杰(1997— ),男,硕士研究生。研究方向:直流系统建模与稳定性分析。E-mail:chenhaojie@hnu.edu.cn。
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陈浩杰(1997— ),男,硕士研究生。研究方向:直流系统建模与稳定性分析。E-mail:chenhaojie@hnu.edu.cn。
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帅智康(1982— ),男,博士,教授。研究方向:先进电能质量控制理论、微电网的稳定性分析及控制、电力电子技术及应用。E-mail:szk@hun.edu.cn。
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帅智康(1982— ),男,博士,教授。研究方向:先进电能质量控制理论、微电网的稳定性分析及控制、电力电子技术及应用。E-mail:szk@hun.edu.cn。
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吴向阳(1993— ),男,博士研究生。研究方向:中压直流系统稳定性分析。E-mail:wuxy@hnu.edu.cn。
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吴向阳(1993— ),男,博士研究生。研究方向:中压直流系统稳定性分析。E-mail:wuxy@hnu.edu.cn。
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Typical topology of subsea double-ended DC power supply system, figureFileSmall=ex08dsqLnzLjoPKZGt0DNw==, figureFileBig=9x7bfmRP+b80xtMTlLhOjQ==, tableContent=null), ArticleFig(id=1205931308593774806, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图1, caption=
海底双端直流供电系统的典型拓扑, figureFileSmall=ex08dsqLnzLjoPKZGt0DNw==, figureFileBig=9x7bfmRP+b80xtMTlLhOjQ==, tableContent=null), ArticleFig(id=1205931308853821666, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 2, caption=
Topology of LLC resonant converter, figureFileSmall=ldhnTeSl6PlxmQtcgqg5yg==, figureFileBig=pbpUbBGStT8YirapZqxH1Q==, tableContent=null), ArticleFig(id=1205931308954484968, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图2, caption=
LLC谐振变换器拓扑, figureFileSmall=ldhnTeSl6PlxmQtcgqg5yg==, figureFileBig=pbpUbBGStT8YirapZqxH1Q==, tableContent=null), ArticleFig(id=1205931309076119790, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 3, caption=
DC-side average-value model of MMC, figureFileSmall=cabtqGA+Sya8bD/d2/AGVA==, figureFileBig=FRNEfqJquvBsiRyL79Z1rg==, tableContent=null), ArticleFig(id=1205931310275690737, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图3, caption=
MMC直流侧平均值模型, figureFileSmall=cabtqGA+Sya8bD/d2/AGVA==, figureFileBig=FRNEfqJquvBsiRyL79Z1rg==, tableContent=null), ArticleFig(id=1205931310430879991, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 4, caption=
Frequency-domain impedance equivalent circuit of subsea double-ended DC power supply system, figureFileSmall=tCd3/g69HznTQUye54RO4Q==, figureFileBig=SGOATAkj12SLyLICkwqyJg==, tableContent=null), ArticleFig(id=1205931310560903419, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图4, caption=
海底双端直流供电系统的频域阻抗等效电路, figureFileSmall=tCd3/g69HznTQUye54RO4Q==, figureFileBig=SGOATAkj12SLyLICkwqyJg==, tableContent=null), ArticleFig(id=1205931310657372417, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 5, caption=
Equivalent circuit of junction box subsystem, figureFileSmall=A8xXxD+Uyj9LrHkIzHc7XA==, figureFileBig=+xNKrkM0ElX+BADkoZDpDw==, tableContent=null), ArticleFig(id=1205931310758035716, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图5, caption=
接驳盒子系统等效电路, figureFileSmall=A8xXxD+Uyj9LrHkIzHc7XA==, figureFileBig=+xNKrkM0ElX+BADkoZDpDw==, tableContent=null), ArticleFig(id=1205931310938390793, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 6, caption=
Equivalent circuit of subsea double-ended power supply system, figureFileSmall=J0RevCF+i9MLz2LzNgu1Kw==, figureFileBig=v9+OBw2Xh3hFvtwuL19zRQ==, tableContent=null), ArticleFig(id=1205931311018082574, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图6, caption=
海底双端供电系统等效电路, figureFileSmall=J0RevCF+i9MLz2LzNgu1Kw==, figureFileBig=v9+OBw2Xh3hFvtwuL19zRQ==, tableContent=null), ArticleFig(id=1205931311122940180, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 7, caption=
Parameter sensitivity analysis result of Buck converter, figureFileSmall=bQkNx3yy4pvtf7e2gYWX4w==, figureFileBig=iP2E7Sq/7JiOHs7XhkW2qQ==, tableContent=null), ArticleFig(id=1205931311194243353, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图7, caption=
Buck变换器参数灵敏度分析结果, figureFileSmall=bQkNx3yy4pvtf7e2gYWX4w==, figureFileBig=iP2E7Sq/7JiOHs7XhkW2qQ==, tableContent=null), ArticleFig(id=1205931311286518045, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 8, caption=
Pole and zero plot of input admittance of Buck converter, figureFileSmall=H0lpaaShKih9uHpz4eyLYg==, figureFileBig=uJH/YxxuncYnyIlXK1phAA==, tableContent=null), ArticleFig(id=1205931311391375647, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图8, caption=
Buck变换器输入导纳零极点图, figureFileSmall=H0lpaaShKih9uHpz4eyLYg==, figureFileBig=uJH/YxxuncYnyIlXK1phAA==, tableContent=null), ArticleFig(id=1205931311496233250, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 9, caption=
Parameter sensitivity analysis results of junction box subsystem, figureFileSmall=bO6daSOvf4LJu/z/naeang==, figureFileBig=mB4HOruXirt5zZ5klulCog==, tableContent=null), ArticleFig(id=1205931311617868070, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图9, caption=
接驳盒子系统各参数灵敏度分析结果, figureFileSmall=bO6daSOvf4LJu/z/naeang==, figureFileBig=mB4HOruXirt5zZ5klulCog==, tableContent=null), ArticleFig(id=1205931311739502889, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 10, caption=
Pole and zero plot of equivalent input admittance of junction box subsystem, figureFileSmall=S1X0ZFH+m1YhA5npn807Xg==, figureFileBig=BvtpGMIVQR7R73sGiYPw0A==, tableContent=null), ArticleFig(id=1205931311861137712, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图10, caption=
接驳盒子系统等效输入导纳零极点图, figureFileSmall=S1X0ZFH+m1YhA5npn807Xg==, figureFileBig=BvtpGMIVQR7R73sGiYPw0A==, tableContent=null), ArticleFig(id=1205931311999549749, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 11, caption=
Gnet generalized Nyquist curve of unstable system, figureFileSmall=J7DdIH30YkhpaKUS5fZDhg==, figureFileBig=IAIPIjn8wFkkKrp80DSYSQ==, tableContent=null), ArticleFig(id=1205931312196682041, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图11, caption=
失稳系统Gnet广义奈奎斯特曲线, figureFileSmall=J7DdIH30YkhpaKUS5fZDhg==, figureFileBig=IAIPIjn8wFkkKrp80DSYSQ==, tableContent=null), ArticleFig(id=1205931312288956735, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 12, caption=
Parameter sensitivity of stability of double-ended power supply system, figureFileSmall=O3SWr2ihpci71mdjrTTYig==, figureFileBig=EwGzwKtJHt3cH3jsmecAdQ==, tableContent=null), ArticleFig(id=1205931312393814340, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图12, caption=
双端供电系统稳定性参数灵敏度, figureFileSmall=O3SWr2ihpci71mdjrTTYig==, figureFileBig=EwGzwKtJHt3cH3jsmecAdQ==, tableContent=null), ArticleFig(id=1205931312511254854, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 13, caption=
Sensitivity analysis results of real and imaginary parts of junction box input admittance, figureFileSmall=+XyufcZ/nof4Cpx/mGz3gg==, figureFileBig=xTA27m4sGJmkHHDWn5Aj2A==, tableContent=null), ArticleFig(id=1205931312616112455, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图13, caption=
接驳盒输入导纳实、虚部灵敏度分析结果, figureFileSmall=+XyufcZ/nof4Cpx/mGz3gg==, figureFileBig=xTA27m4sGJmkHHDWn5Aj2A==, tableContent=null), ArticleFig(id=1205931312729358670, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 14, caption=
Sensitivity analysis result of control parameters of junction box subsystem, figureFileSmall=ReK2GcJtlWNsJDyGvYvvWA==, figureFileBig=rMzYsDCBpCGz5JGyfbaNkw==, tableContent=null), ArticleFig(id=1205931312830021969, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图14, caption=
接驳盒子系统控制参数灵敏度分析结果, figureFileSmall=ReK2GcJtlWNsJDyGvYvvWA==, figureFileBig=rMzYsDCBpCGz5JGyfbaNkw==, tableContent=null), ArticleFig(id=1205931312934879570, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 15, caption=
Generalized Nyquist curve of Gnet under different parameters, figureFileSmall=ocgenrra9MZyIIHY6H/dow==, figureFileBig=XMMij6ckWHAV3k1z1IhBSg==, tableContent=null), ArticleFig(id=1205931313052320086, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图15, caption=
不同参数下系统回比矩阵Gnet广义奈奎斯特曲线, figureFileSmall=ocgenrra9MZyIIHY6H/dow==, figureFileBig=XMMij6ckWHAV3k1z1IhBSg==, tableContent=null), ArticleFig(id=1205931313136206170, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 16, caption=
Output voltage waveforms of Buck converter, figureFileSmall=h+p6KA2hnUXzBTzFd63FBg==, figureFileBig=hC/xHZ7kLQUCgDJRw1/SeA==, tableContent=null), ArticleFig(id=1205931313207509341, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图16, caption=
Buck变换器输出电压波形, figureFileSmall=h+p6KA2hnUXzBTzFd63FBg==, figureFileBig=hC/xHZ7kLQUCgDJRw1/SeA==, tableContent=null), ArticleFig(id=1205931313312366944, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 17, caption=
Output voltage waveforms of LLC resonant converter, figureFileSmall=2kXrovS9b29OfJv1Mx2w2w==, figureFileBig=nRVuQB8PHTMLPWbubka6xw==, tableContent=null), ArticleFig(id=1205931313434001763, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图17, caption=
LLC谐振变换器输出电压波形, figureFileSmall=2kXrovS9b29OfJv1Mx2w2w==, figureFileBig=nRVuQB8PHTMLPWbubka6xw==, tableContent=null), ArticleFig(id=1205931313530470761, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Fig. 18, caption=
Voltage waveforms of system at node 3 under different parameters, figureFileSmall=dQuCmJj2WT3JvaojSzfn3g==, figureFileBig=jBqTKvA+xOGFyH3zLuTgEg==, tableContent=null), ArticleFig(id=1205931314730041706, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=图18, caption=
不同参数下系统节点3电压波形, figureFileSmall=dQuCmJj2WT3JvaojSzfn3g==, figureFileBig=jBqTKvA+xOGFyH3zLuTgEg==, tableContent=null), ArticleFig(id=1205931314834899310, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=EN, label=Tab. 1, caption=
System parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变换器 | 参数 | 数值 |
| MMC | 输出电压Vdc/kV | 10 |
| 桥臂电感Larm/H | 0.02 |
| 子模块电容CSM/mF | 1 |
| 输出功率P/kW | 50 |
| 桥臂电阻Rarm/Ω | 0.1 |
| 子模块数NMMC/个 | 20 |
| LLC谐振变换器 | 输入电压Vin_LLC/kV | 1 |
| 输出电压Vo_LLC/V | 375 |
| 子模块数NLLC/个 | 10 |
| 额定功率PLLC/kW | 5 |
| 输入电容Cin_LLC/μF | 120 |
| 谐振电感Lr/μH | 52 |
| 谐振电容Cr/nF | 43.9 |
| 励磁电感Lm/μH | 364 |
| 输出电容Co/μF | 2 200 |
| 比例参数Kp1 | 10 |
| 积分参数Ki1 | 10 000 |
Buck 变换器 | 输出电压Vo2/V | 48 |
| 负载数量NBuck/个 | 10 |
| 输出功率Po2/kW | 5 |
| 电容参数C/μF | 1 250 |
| 比例参数Kp2 | 0.05 |
| 积分参数Ki2 | 10 |
), ArticleFig(id=1205931314952339821, tenantId=1146029695717560320, journalId=1146031654075715584, articleId=1146828032427298965, language=CN, label=表1, caption=
系统参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变换器 | 参数 | 数值 |
| MMC | 输出电压Vdc/kV | 10 |
| 桥臂电感Larm/H | 0.02 |
| 子模块电容CSM/mF | 1 |
| 输出功率P/kW | 50 |
| 桥臂电阻Rarm/Ω | 0.1 |
| 子模块数NMMC/个 | 20 |
| LLC谐振变换器 | 输入电压Vin_LLC/kV | 1 |
| 输出电压Vo_LLC/V | 375 |
| 子模块数NLLC/个 | 10 |
| 额定功率PLLC/kW | 5 |
| 输入电容Cin_LLC/μF | 120 |
| 谐振电感Lr/μH | 52 |
| 谐振电容Cr/nF | 43.9 |
| 励磁电感Lm/μH | 364 |
| 输出电容Co/μF | 2 200 |
| 比例参数Kp1 | 10 |
| 积分参数Ki1 | 10 000 |
Buck 变换器 | 输出电压Vo2/V | 48 |
| 负载数量NBuck/个 | 10 |
| 输出功率Po2/kW | 5 |
| 电容参数C/μF | 1 250 |
| 比例参数Kp2 | 0.05 |
| 积分参数Ki2 | 10 |
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