Journal of Modern Power Systems and Clean Energy

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Home > Archive>Volume 7, Issue 5, 2019 >1129-1141. DOI:10.1007/s40565-019-0546-1
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AC fault ride through control strategy on inverter side of hybrid HVDC transmission systems
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Affiliation:

1 China Electric Science Research Institute Co., Ltd., Beijing, China 2 State Key Laboratory for Power Grid Safety and Energy Conservation, Beijing, China 3 School of Electrical Engineering and Automation, Tianjin University, Tianjin, China 4 College of Electrical Engineering, Beijing Jiaotong University, Beijing, China

Fund Project:

This work is supported by the key project of Smart Grid Technology and Equipment of National Key Research and Development Plan of China (No. 2016YFB0900600) and Technology Projects of State Grid Corporation of China (No. 52094017000W).

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    Abstract:

    Hybrid high-voltage direct current (HVDC) transmission systems employ a new type of HVDC transmission topology that combines the advantages of the line-commutated converter system and the voltage-source converter system. They can improve the efficiency and reliability of long-distance power transmission. However, realizing alternating-current (AC) grid-fault ride through on the inverter side of a hybrid HVDC transmission system is a challenge considering that a voltage-source converter based HVDC (VSC-HVDC) is used on the inverter side. In this study, a control strategy for an overvoltage fixed trigger angle based on the power-balance method is developed by fully utilizing the operation characteristics of a hybrid HVDC transmission system. The strategy reduces the inverter-side overvoltage of the HVDC system under a fault in the inverter-side AC system. Simulations based on Gezhou Dam are conducted to validate the effectiveness of the proposed strategy.

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  • Online: September 24,2019

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