• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

ELECTRIC POWER CONSTRUCTION ›› 2023, Vol. 44 ›› Issue (12): 148-160.doi: 10.12204/j.issn.1000-7229.2023.12.013

• Stability Analysis and Control of New Power System ?Hosted by Associate Professor XIA Shiwei, Professor XU Yanhui, Professor YANG Deyou and Associate Professor LIU Cheng? • Previous Articles     Next Articles

Reactive Power-Coordinated Control of a Synchronous Condenser and VSC-HVDC in the Sending-Side Near Region Power Grid of an LCC-HVDC

LI Dahu1(), LI Jia2(), ZHOU Yue1(), RAO Yuze1(), ZHOU Hongyu2(), YAO Wei2()   

  1. 1. State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China
    2. State Key Laboratory of Advanced Electromagnetic Engineering and Technology (Huazhong University of Science and Technology), Wuhan 430074, China
  • Received:2022-10-12 Published:2023-12-01 Online:2023-11-29
  • Supported by:
    National Natural Science Foundation of China(52022035);Science and Technology Program of Hubei Electric Power Co., Ltd.(52150521000W)


Commutation failure on the receiving side can be caused by a fault in the line commutated converter-based HVDC (LCC-HVDC) on the sending side, and an over-compensated reactive power increases the risk of commutation failure. In this paper, for a transmission system in which the sending-side LCC-HVDC is in parallel with a synchronous condenser and voltage source converter-based HVDC (VSC-HVDC), the reactive power control mechanisms and response characteristics of synchronous condenser and VSC-HVDC are discussed. We observe that the over-compensated reactive power of VSC-HVDC increases the risk of commutation failure of the LCC-HVDC, and the reactive power regulation capacity of the synchronous condenser is not fully utilized. Based on this, a reactive power-coordinated control scheme between the synchronous condenser and VSC-HVDC is proposed to accelerate the reactive power response of the VSC-HVDC, reduce the excess reactive power compensation to reduce the risk of commutation failure of the LCC-HVDC, and improve utilization of the reactive power regulation capacity of the synchronous condenser. Finally, simulation results of typical examples reveal that the proposed scheme can fully utilize the dynamic reactive power regulation capacity of the synchronous condenser, inhibit transient low voltage at the moment of fault, and reduce the risk of commutation failure after the fault is cleared.

Key words: LCC-HVDC, sending side, over reactive power compensation, commutation failure, synchronous condenser, VSC-HVDC, reactive power coordinated control

CLC Number: