AC fault ride through control strategy on inverter side of hybrid HVDC transmission systems

Journal of Modern Power Systems and Clean Energy

卷:7

Liangliang Hao¹  Yizhen Wang²  Zhengguang Chen³  Xingguo Wang³  Dingxiang Du³  Guosheng Yang³  Zexin Zhou³ 

[1] College of Electrical Engineering, Beijing Jiaotong University,Beijing,China;

[2] School of Electrical Engineering and Automation, Tianjin University,Tianjin,China;

[3] State Key Laboratory for Power Grid Safety and Energy Conservation,Beijing,China;

关键词: Hybrid HVDC transmission;    Fault crossing;    Control strategy;    Inverter side;   

DOI  :  10.1007/s40565-019-0546-1

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown