A Control Strategy for Suppressing HVDC Continuous Commutation Failure Risk under Weak AC State

被引：0
|
作者：
Lu, Yi [1 ]
Zhang, Hengxu [1 ]
Cao, Yongji [1 ]
Ma, Changhui [2 ]
Yang, Dong [2 ]
Ma, Huan [2 ]
机构：
[1] Shandong Univ, Sch Elect Engn, Jinan, Peoples R China
[2] State Grid Shandong Elect Power Co, State Grid Shandong Elect Power Res Inst, Jinan, Peoples R China
来源：
2019 IEEE 3RD INTERNATIONAL CONFERENCE ON GREEN ENERGY AND APPLICATIONS (ICGEA 2019) | 2019年
关键词：
HVDC system; commutation failure mechanism; continuous commutation failure; fast power decrease strategy;
D O I：
10.1109/icgea.2019.8880737
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The HVDC receiving end system with inverter short-line fault is in the weak AC state. At this time, the inverter is prone to continuous commutation failure. And the continuous commutation failure will cause the voltage and power angle fluctuations, which seriously threatens power system security. In this paper, the mechanism of HVDC continuous commutation failure is studied. The commutation failure is divided into the transient and steady process. Then, the effects of HVDC control strategy and receiving end system reactive power support capability to continuous commutation failure are analyzed. Based on the continuous commutation failure mechanism and the actual HVDC control system, a fast decrease strategy of DC power is proposed. Finally, it is validated by the actual HVDC transmission system that the proposed fast decrease strategy of DC power is effective to suppress the risk of continuous commutation failure.
引用
收藏
页码：35 / 39
页数：5
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