Coordinated control strategy for synchronous condenser and AC filter in UHVDC converter station
DOI：10.19783/j.cnki.pspc.190604
Key Words:UHVDC converter station  synchronous condenser  dynamic support  AC filter  steady state  coordinated control  data exchange  reactive power balance control
Author NameAffiliationE-mail
SUN Weifeng XJ Group Corporation, Xuchang 461000, China  
CUI Chen XJ Group Corporation, Xuchang 461000, China  
ZHOU Xiaofeng XJ Group Corporation, Xuchang 461000, China zhouxiaofengxj@126.com 
LI Xingkui XJ Group Corporation, Xuchang 461000, China  
FU Yan XJ Group Corporation, Xuchang 461000, China  
LI Chuanxi XJ Group Corporation, Xuchang 461000, China  
LEI Yulei XJ Group Corporation, Xuchang 461000, China  
DAI Guo’an XJ Group Corporation, Xuchang 461000, China  
KANG Jianshuang XJ Group Corporation, Xuchang 461000, China  
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Abstract:Equipped with synchronous condenser in UHVDC converter station can provide dynamic support for AC network and improve system stability, but the current synchronous condenser and the AC filter in converter station are controlled separately, and there is no logical coordination between them. In view of this problem, considering the existing control strategies and characteristics of synchronous condenser and AC filter in converter station, a steady state reactive power coordinated control strategy is proposed. The data exchange between the control systems of them is realized. On the premise of ensuring that the dynamic support function of the synchronous condenser to AC network is not affected, the DC control system calls part of the steady-state reactive power capacity of the synchronous condenser to make it cooperate with the AC filter in converter station for reactive power balance control, thus giving full play to the role of reactive power compensation of the synchronous condenser. Finally, the strategy is validated by the simulation test. This work is supported by Science and Technology Project of the Headquarters of State Grid Corporation of China (No. 52153218000H).
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