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Adaptive Virtual Access Point Planning and Control Strategy of VSC Under Weak Network Connection
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Dan JIN1, Jing ZHI1, Shijin XIN1, Jian YANG1, Yafei HUANG2, Qing XU1
Electric Drive | 2024, 54(2) : 55 - 64
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Electric Drive | 2024, 54(2): 55-64
Adaptive Virtual Access Point Planning and Control Strategy of VSC Under Weak Network Connection
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Dan JIN1, Jing ZHI1, Shijin XIN1, Jian YANG1, Yafei HUANG2, Qing XU1
Affiliations
  • 1 State Grid Baiyin Power Supply Company，Baiyin 730900，Gansu，China
  • 2 State Grid Gansu Electric Power Company，Lanzhou 730000，Gansu，China
Published: 2024-02-20 doi: 10.19457/j.1001-2095.dqcd24738
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Voltage source converter（VSC） connected to weak AC power grid has the risk of small disturbance instability. Under the traditional control strategy，VSC has to reduce output power to maintain stable operation. In order to improve the stability of the weak grid connected VSC system，first established a universal analysis model for revealing the stability mechanism of weak grid connected VSC based on the AC voltage outer loop，and revealed the influence of the coupling characteristics among the phaselocked loop （PLL） and the VSC outer loop control on system stability. On this basis，a parameter adaptive control strategy for virtual parallel point was proposed. The detailed switch model of VSC in the PSCAD/EMTDC environment verifies the effectiveness of the proposed control method.

voltage source converter（VSC）  /  weak AC power grid  /  small disturbance stability  /  improved control strategy
Dan JIN, Jing ZHI, Shijin XIN, Jian YANG, Yafei HUANG, Qing XU. Adaptive Virtual Access Point Planning and Control Strategy of VSC Under Weak Network Connection[J]. Electric Drive, 2024 , 54 (2) : 55 -64 . DOI: 10.19457/j.1001-2095.dqcd24738
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Year 2024 volume 54 Issue 2
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Article Info
doi: 10.19457/j.1001-2095.dqcd24738
  • Receive Date：2022-10-29
  • Online Date：2026-01-13
  • Published：2024-02-20
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History
  • Received：2022-10-29
  • Revised：2022-11-09
Affiliations
    1 State Grid Baiyin Power Supply Company，Baiyin 730900，Gansu，China
    2 State Grid Gansu Electric Power Company，Lanzhou 730000，Gansu，China
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