A Novel Integration Technology of Distribution Transformer and Static Var Compensation System
Xiong Qing1, 2, Zhang Zhe1, 2, Yin Xianggen1, 2, Wen Minghao1, 2, Liu Jian1, 2, Wang Cunping1, 2
1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan 430074 China)2. Electric Power Security And High Efficiency Laboratory Huazhong University of Science and Technology Wuhan 430074 China
Abstract：There are two compensation methods during distribution system currently: high voltage centralized compensation and low voltage user end distributed compensation. Towards the problems of the two compensation method, this paper proposes a technology of integrating distribution transformer and static var compensation(DT-STATCOM). The technology takes the distribution transformer of box substation as the control node of reaction power and power quality. It uses the surplus capacity of transformer to compensate the reactive power. And by setting the connect voltage reasonably, it decreases the withstand voltage level and current capacity of switching devices, which benefit the economic and technical indicators. In addition, the integration structure reduces the volume and cost of compensation device. Meanwhile, towards the command current detection problem caused by the special structure of DT-STATCOM, this paper proposes a novel reactive current detection method across the transformer’s ports. Then the paper designes the control system based on the multi-lateral information. At last, the simulation and prototype test show that, the DT-STATCOM system had significant effect on dynamic reactive power compensation, transformer voltage support and imbalance inhibition.
熊卿, 张哲, 尹项根, 文明浩, 刘健, 王存平. 新型配电变压器一体化STATCOM技术研究[J]. 电工技术学报, 2012, 27(10): 262-269.
Xiong Qing, Zhang Zhe, Yin Xianggen, Wen Minghao, Liu Jian, Wang Cunping. A Novel Integration Technology of Distribution Transformer and Static Var Compensation System. Transactions of China Electrotechnical Society, 2012, 27(10): 262-269.
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