| In the process of upgrading rural power grid voltage, scientific and rational planning, the county’s rural power grid structure of the perfect rural low-voltage power grid power supply facilities operating condition has been improved, the safety of power grid, power supply reliability and equipment health level has been greatly improved. To a large extent, provides a powerful guarantee for the safe operation of power grid.However, with the improvement of the rural power grid, power supply company,management scope extends to every household in the household electric meter. The responsibility for the safety management of rural power grid and the difficulty increases gradually, especially the rural electric shock accidents caused by leakage, and fire equipment and appliances were burned, incidents. Many problems exist disadvantages of a major cause of the accident is the earth leakage protective device and its use in the management of their own. Therefore, for the rural power network that exists in the use and management in the process of the problems and Strategies of in-depth study is very necessary.At present, the rural power grid in the application of residual current operated protective device used in a certain extent to a certain role in the protection of personal and equipment safety, but for normal investment current changes in cutting process cannot be identified, the action is non selective, resulting in the decline of power supply reliability rate. In this paper, the county rural low voltage power leakage protection installation and use and management of the status quo is studied deeply, on the human body electric shock current characteristic waveform extraction, were studied on the extraction of typical characteristics of electric current, the current data, and attempts to apply this technology should be used in the new earth leakage protective device, in the premise of guarantee personal, equipment safety, effectively improve the power supply reliability rate. |
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