Power transmission line patrolling strategy method based on lightning fault insulation recovery characteristic

Abstract

The invention relates to a power transmission line patrolling strategy method based on a lightning fault insulation recovery characteristic. The flashover damage situation and the insulation characteristic recovery situation of an insulator are analyzed according to monitoring information generated at a fault moment, and finally a line patrolling strategy is provided. The method mainly comprises the following steps: firstly, acquiring the monitoring information at the fault moment; secondly, analyzing the characteristic according to the acquired monitoring information, and determining a fault position and the type of the fault; then determining the insulation damage degree and the insulation recovery performance of each fault; finally providing the line patrolling strategy according to the damage degree and the insulation recovery performance of the insulator. According to the power transmission line patrolling strategy method, the corresponding line patrolling strategy is provided based on the lightning fault insulation recovery characteristic at first, so that the power failure time is shortened to the maximum extent, and the safe operation of a power grid is guaranteed; meanwhile, the safety of a patroller is guaranteed, and the line patrolling efficiency is improved. The implementation process of the method is clear, and the method is put into the actual application of engineering; a good economical effect and social benefits are achieved.

Description

technical field [0001] The method of the invention relates to the field of transmission line fault inspection and operation management, in particular to a transmission line fault inspection strategy method for lightning strikes. Background technique [0002] Statistics show that: lightning is the first cause of transmission line fault tripping, accounting for more than 60% of all types of faults, is the main threat to the power grid, and is also the top priority of power grid lightning protection and operation and maintenance work. In the previous power grid operation and maintenance work process, after the transmission line tripped, it was necessary to carry out manual line inspection immediately to find the fault point and the cause of the fault. For the fault, it was necessary to eliminate the cause of the fault in time to ensure smooth closing. However, transient faults such as lightning strikes often occur in strong winds and heavy rains, and the line inspection environ...

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Problems solved by technology

[0003] At present, there is no technology or method to scientifically formulate lightning fault inspection strategy based on insulator damage degree and insulation recovery performance, so as to minimize fault power loss and operation and maintenance costs. Therefore, in order to reasonably plan inspection strategy and improve the intelligent management of power grid Level, the line inspection strategy method based on the damage degree of lightning insulators and insulation recovery performance will qualitatively improve the operation and maintenance level of the power grid

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