A Novel Three-Phase Unbalanced Overvoltage Suppression Method for Distribution Network

被引：0

作者：

Liu, Yuling ^{[1
]}

Zeng, Xiangjun ^{[1
]}

Chen, Duohong ^{[1
]}

Liu, Zongjie ^{[2
]}

Zhang, Xiangdong ^{[2
]}

Wang, Xiangzhe ^{[2
]}

机构：

[1] Changsha Univ Sci & Technol, Collaborat Innovat Ctr Clean Energy & Elect Power, Changsha 410004, Hunan, Peoples R China

[2] State Grid Shandong Elect Power Co, State Grid Shandong Elect Power Corp Jining Power, Jining, Shandong, Peoples R China

来源：

PROCEEDINGS OF 2017 CHINA INTERNATIONAL ELECTRICAL AND ENERGY CONFERENCE (CIEEC 2017) | 2017年

基金：

中国国家自然科学基金;

关键词：

distribution network; injection current; overvoltage; suppression method; three-phase unbalance;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Aiming at suppressing three-phase unbalanced overvoltage in distribution network, a new suppression method was proposed in this paper. The PWM active inverter is used to inject a current with the amplitude and phase easily obtained into the neutral point of distribution network. The optimal injection current only need to record the amplitude and phase of the neutral point voltage at the initial moment of the three-phase unbalance, and takes it as a reference. After injecting the optimal injection current, the neutral point voltage can be suppressed to 0, i.e., the purpose of three-phase unbalanced overvoltage suppression can be achieved. Simulation analysis showed that it has the fast response, and it can effectively suppress the three-phase unbalanced overvoltage, which verified the feasibility and validity of the proposed method.

引用

页码：538 / 542

页数：5

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