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Dive into the research topics where Chong Gao is active.

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Featured researches published by Chong Gao.


ieee international conference on dc microgrids | 2015

Topological analysis of HVDC circuit breaker with coupling transformer

Yuan Liu; Xiaoguang Wei; Chong Gao; Junzheng Cao

The rapid progress of large-scale clean energy accessing to the grid promotes the development of DC grid technologies. HVDC (high voltage direct current) circuit breaker as one of the key equipment of the DC grid has gradually attracted more and more attentions. Direct current is more difficult to be interrupted comparing to alternative current because of without natural zero-crossing, especially in the high voltage and large capacity system. This paper briefly reviews the research status of DC circuit breaker firstly. Then a novel topology of DC circuit breaker with coupling transformer is proposed. Its topology is presented and operating principle is analyzed. The equivalent model for different stages is established, and the key component parameters are designed. Operating characteristic of the HVDC circuit breaker is simulated relying ZhouShan 5-terminal flexible HVDC project. Simulation results have verified the correctness of theoretical analysis and the effectiveness of the novel HVDC circuit breaker interrupting the fault current in the flexible HVDC transmission grid. This provides a basis for HVDC circuit breaker design.


Archive | 2011

Steady-state operation test device of flexible direct current transmission MMC high-pressure submodule

Chong Gao; Xiang Luo; Xiaoguang Wei; Zheng Lv


european conference on power electronics and applications | 2015

Development and test of a 200kV full-bridge based hybrid HVDC breaker

Wandi Zhou; Xiaoguang Wei; Sheng Zhang; Guangfu Tang; Zhiyuan He; Jianchao Zheng; Yunhai Dan; Chong Gao


Archive | 2012

Power ring test apparatus for flexible DC power transmission MMC valve stable state operation test

Yanan Wu; Xiang Luo; Chong Gao


Archive | 2012

Detection method for modular multi-level converter (MMC) steady state operation tester

Yanan Wu; Kunpeng Zha; Chong Gao; Jingzhi Zhou


Archive | 2011

Fault current operation test device for flexible direct current power transmission MMC (modular multi-level converter) valve

Chong Gao; Xiang Luo; Rong Yi; Wandi Zhou; Bin Guo


Archive | 2012

Trigger method of auxiliary valve in a short circuit current test apparatus

Yanan Wu; Xiang Luo; Chong Gao; Kunpeng Zha


Archive | 2012

Testing method for dynamic inductance of saturable reactor of direct-current converter valve

Jie Liu; Chong Gao; Xiaoguang Wei; He Zhao; Junzheng Cao


International Transactions on Electrical Energy Systems | 2016

Type tests on MMC‐based HVDC valve section with synthetic test circuits

Guangfu Tang; Zhiyuan He; Kunpeng Zha; Xiang Luo; Yanan Wu; Chong Gao; Haitian Wang


Archive | 2013

Direct-current circuit breaker and implementation method therefor

Guangfu Tang; Chong Gao; Xiang Luo; Xiaoguang Wei; Yufeng Qiu; Junzheng Cao

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Xiang Luo

State Grid Corporation of China

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Xiaoguang Wei

State Grid Corporation of China

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Junzheng Cao

State Grid Corporation of China

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Yanan Wu

State Grid Corporation of China

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Kunpeng Zha

Electric Power Research Institute

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Guangfu Tang

State Grid Corporation of China

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Yufeng Qiu

State Grid Corporation of China

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Haitian Wang

Shanghai Jiao Tong University

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Sheng Zhang

Electric Power Research Institute

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