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Impedance Modeling and Stability Analysis of Multi-bus Cascaded Subsea DC Power Supply System
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Haojie CHEN, Yang LI, Zhikang SHUAI, Xiangyang WU
Journal of Power Supply | 2025, 23(1) : 151 - 159
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Journal of Power Supply | 2025, 23(1): 151-159
• Power System •
Impedance Modeling and Stability Analysis of Multi-bus Cascaded Subsea DC Power Supply System
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Haojie CHEN, Yang LI, Zhikang SHUAI, Xiangyang WU
Affiliations
  • College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Published: 2025-01-30 doi: 10.13234/j.issn.2095-2805.2025.1.151
Outline
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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.

Subsea observation network  /  DC power supply system  /  impedance modeling  /  small-signal stability
Haojie CHEN, Yang LI, Zhikang SHUAI, Xiangyang WU. Impedance Modeling and Stability Analysis of Multi-bus Cascaded Subsea DC Power Supply System[J]. Journal of Power Supply, 2025 , 23 (1) : 151 -159 . DOI: 10.13234/j.issn.2095-2805.2025.1.151
Funding
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  • National Natural Science Foundation of China(52125705)
  • China Postdoctoral Science Foundation(2021M701137)
  • Natural Science Foundation of Hunan Province(2022JJ40066)
Appendix
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Year 2025 volume 23 Issue 1
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388
154
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Article Info
doi: 10.13234/j.issn.2095-2805.2025.1.151
  • Receive Date：2023-02-06
  • Online Date：2025-07-01
  • Published：2025-01-30
Article Data
Affiliations
History
  • Received：2023-02-06
  • Accepted：2023-04-01
Funding
National Natural Science Foundation of China(52125705)
China Postdoctoral Science Foundation(2021M701137)
Natural Science Foundation of Hunan Province(2022JJ40066)
Affiliations
    College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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