Analysis and Improvement of the Multiple Controller Interaction in LCC-HVDC for Mitigating Repetitive Commutation Failure

被引:33
作者
Hong, Lerong [1 ]
Zhou, Xiaoping [1 ]
Liu, Yifeng [1 ]
Xia, Haitao [1 ]
Yin, Hanhang [1 ]
Chen, Yandong [1 ]
Zhou, Leming [1 ]
Xu, Qianming [1 ]
机构
[1] Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Peoples R China
基金
中国国家自然科学基金;
关键词
Inverters; Rectifiers; Switches; Process control; HVDC transmission; Voltage control; LCC-HVDC; commutation failure; HVDC control; controller interaction; fault recovery; STRATEGY;
D O I
10.1109/TPWRD.2020.3017802
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In a line-commutated converter based high-voltage direct-current (LCC-HVDC) system, the inverter control system usually includes constant extinction angle (CEA) controller, constant current (CC) controller, current error controller (CEC), and voltage-dependent current order limiter (VDCOL). However, the interaction influence of multiple controllers may cause repetitive commutation failure (CF). For this purpose, this paper deeply investigates the mechanism and the influencing factors of repetitive CF caused by controller interaction. It is found that the lower limit value of CEA controller can affect the control switching process and thus the probability of repetitive CF. Besides, the minimum gamma measurement (MGM) unit prevents the system from acquiring the real extinction angle in time, which results in the DC current fluctuation during the recovery process. Moreover, the probability of control-induced repetitive CF is much higher when the HVDC inverter is connected to a weak AC system or the AC fault is not serious but not cleared in time. Based on the above analyses, an improved control method is proposed for recovery performance improvement, which is mainly realized by modifying the lower and upper limits of the CEA controller during recovery. Finally, the simulation and experimental results verify the theoretical analyses and the proposed control method.
引用
收藏
页码:1982 / 1991
页数:10
相关论文
共 33 条
[31]   Elimination of Commutation Failures of LCC HVDC System with Controllable Capacitors [J].
Xue, Ying ;
Zhang, Xiao-Ping ;
Yang, Conghuan .
IEEE TRANSACTIONS ON POWER SYSTEMS, 2016, 31 (04) :3289-3299
[32]   Adaptive VDCOL control strategy for the recovery of the UHVDC SPC system [J].
Yao, Shujun ;
Huang, Wenerda ;
Hao, Wenbo ;
Guo Wanhua .
JOURNAL OF ENGINEERING-JOE, 2019, (16) :1754-1758
[33]   Probabilistic Analysis of Commutation Failure in LCC-HVDC System Considering the CFPREV and the Initial Fault Voltage Angle [J].
Yao, Wei ;
Liu, Chang ;
Fang, Jiakun ;
Ai, Xiaomeng ;
Wen, Jinyu ;
Cheng, Shijie .
IEEE TRANSACTIONS ON POWER DELIVERY, 2020, 35 (02) :715-724