Abstract：At present in the city company, the coverage of double bus protection was much low, and the reformations of duplex bus differential protection were applied orderly. The paper introduced the protection types and content of construction, and expounded the details of trip circuit, breaker fail protection circuit and direct transfer trip circuit aiming at the 220kV transformer substation. Owing to the diversity and complexity, the suitable circuits were designed for full-function and clear. The paper had much reference to the reformation of duplex bus differential protection.
钱碧甫, 陈刚, 林高翔, 叶正策, 王策. 220kV变电站220kV母线保护双重化改造实例分析[J]. 电气技术, 2014, 15(12): 81-84.
Qian Bifu, Chen Gang, Lin Gaoxiang, Ye Zhengce, Wang Ce. Example Analysis of Reformation of Duplex Bus Protection in 220kV Transformer Substation. Electrical Engineering, 2014, 15(12): 81-84.
2014, Vol. 15 
