Safety monitoring and evaluation method of live cleaning operation for 500kV transmission line insulation cleaner
A technology for electrified cleaning and power transmission lines, applied in the field of power grids, can solve the problem of no one, and achieve the effect of ensuring the safety of appliances
Inactive Publication Date: 2018-08-14
JIANGMEN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID +1
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Problems solved by technology
[0004] However, there is currently no definite monitoring and evaluation method for the safety monitoring and evaluation of 500kV transmission line insulation cleaning agent live cleaning operation, which can be used to evaluate the safety of the live cleaning operation environment, the safety of tools and the safety of the cleaning process, so as to ensure the safety and efficiency of cleaning.
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Embodiment Construction
[0021] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0022] Such as figure 1 As shown, the 500kV transmission line insulation cleaning agent live cleaning operation safety monitoring and evaluation method of the present embodiment includes the following steps:
[0023] Step a: Determine the humidity of the environment. Under the condition that the humidity is not greater than 80%, it is suitable to use an insulating operating rod for live cleaning.
[0024] Step b: Check the appearance and size of the insulating operating rod. The shortest effective insulating length is 4m, the length of the metal joint at the end is not greater than 0.1m, and the length of the hand-held part is not less than 1m.
[0025] Step c: Carry out a 3min power frequency withstand voltage test on the insulating operating rod, the applied voltage is 580kV, and it is qualified if there is no breakdown, no flashover and no heat.
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The invention relates to the technical field of power grid, and particularly relates to a safety monitoring and evaluation method of live cleaning operation for a 500kV transmission line insulation cleaner, which including the following steps: environmental humidity is judged; the appearance and size of the insulating operating rod are inspected; the operating shock resistance voltage test is carried out on the insulating operating lever; the cleaning process monitors the leakage current of insulator string in real time and complies with strict safety regulations. The safety monitoring and evaluation method provides a method for testing work environment, tools, cleaning process security of the 500kV transmission line insulation cleaner, and provides the monitoring method for leakage current of insulator strings in 500kV transmission line, which has important guiding significance for practical engineering.
Description
technical field [0001] The invention belongs to the technical field of power grids, and in particular relates to a method for monitoring and evaluating the safety of a 500kV transmission line insulation cleaning agent for live cleaning operations. Background technique [0002] With the development of national economy and the increase of power grid capacity and transmission voltage, pollution flashovers caused by environmental pollution in some areas have also become more serious. In recent years, pollution flashover accidents have continued to occur in my country. Although the State Grid has taken various measures to prevent pollution flashover, the pollution flashover accident is still the second power grid accident after the lightning accident. Pollution flashover will cause a large amount of power loss. According to statistics, the power loss caused by pollution flashover accidents is nearly 10 times that of lightning accidents. [0003] As the main framework of the powe...
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IPC IPC(8): G01R31/12G01R31/02
CPCG01R31/12G01R31/50
Inventor 汤振鹏王建国麦荣焕苏师敏李辰盟叶伟玲刘小金朱文超刘永刚谭丽君张超倪慧浩钱根王守鹏
Owner JIANGMEN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID