Jiaxing power supply company in Zhejiang province took the lead in developing disconnector charged rotation test
"With 4435 line is the mother opened the stone knife!" "execution of!!" in September 10th, Jiaxing power supply company Jia Fengwu operation class is 220000 volts bluestone in substation of disconnector charged rotation test. This is the first in Zhejiang province in the substation to carry out the disconnector charged rotation test at 220000 volts, concentrated rectification of defects isolation switch substation.
Because of the open type isolation switch each part is exposed to the atmosphere, Zhejiang area relatively humid environment to make its operation conditions are poor, resulting in widespread implementation of condition based maintenance, isolating switch operating frequency decreased significantly, switching is not in place and other emergency defects often occur during the operation, which has become one of the main risks affecting the safe operation of power grid. Aiming at this problem, the Jiaxing company will be the original centralized repair work mode for the gradual transformation of daily maintenance, not only can the regular activities of the knife of the division, but also save the entire bus stop maintenance time, ensure the normal supply of power in the region.
In order to ensure the safe and stable operation of isolation switch during the test, the company in Jiaxing Province under the uniform deployment of the company, developed a set of treatment scheme, typical defects of governance, the factory maintenance, every stop will dimension, regularly charged rotation test work for solving the existing problems in the operation of isolation switch through conducting isolating switch, find out may affect the safe operation of the power grid of the hidden dangers, to avoid the risk of power grid operation. The rotation of the disconnector charged test carried out by the common need to operate the 20 groups, each group of knife, knife switch 3, operation personnel according to the standard operation, through the operation of 360 steps to a successful completion of this rotation test.
In the future, the company will become the Jiaxing operation of test isolation switch on bluestone in each quarter, to four times after pulling operation, a comprehensive analysis of the test data, test results contrast ratio test operation, at the same time a province wide isolation switch pulling failure statistics, summary analysis specific manufacturers, certain types of the short operation cycle and to determine the tensile cycle and the number of times, provide a reference for the formulation of the subsequent operation strategy, and summarized the promotion. Jiaxing company will strive for isolating switch problems of effective governance in three years, and gradually make the isolation switch operating in stable state. At present, the Zhejiang Electric Power Corporation in 110000 volts and above carry open type isolation switch has 27000 groups of left and right, is the primary transformation equipment operation quantity in the system. The choice of Jiaxing company and Shaoxing company as a pilot unit of the work, to obtain good effect will gradually promote the province.
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