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Li Z.,Xiamen Extra High Voltage Power Transmission and Substation Bureau of Fujian Province
Dianli Zidonghua Shebei/Electric Power Automation Equipment | Year: 2010

The common faults existing in the operating substation automation systems are analyzed and summarized: communication network fault, data acquisition fault, false alarm and mismatch between devices from different manufacturers. Their causes are analyzed based on a mass of site data, including quality, communication interface, openness and so on, and the corresponding treatments and improvement measures are proposed. Source


Sun Y.-H.,Xiamen Extra High Voltage Power Transmission and Substation Bureau of Fujian Province | Chen Z.-Q.,Xiamen Extra High Voltage Power Transmission and Substation Bureau of Fujian Province | Cai Y.,Xiamen Extra High Voltage Power Transmission and Substation Bureau of Fujian Province
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | Year: 2010

The paper discusses the typical PT secondary circuit connection of double-bus and the principle of switch and parallel operation. The several secondary circuit drawings are analyzed. Possible reasons of anti-inverse charge are presented. Moreover, the paper gives an example of the accident. On the basis of it, some basic principles of finding anti-inverse charge are introduced. At last, the paper points out the cause of the accident. Measures of preventing similar accident are presented. The operation experience of voltage transformer by the rules in the past three years shows it is feasible. Source

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