Determination method for installing insulation board between pipe and busbar phases in substation to ensure safety of live work

Abstract

The invention relates to a determination method for guaranteeing hot line work safety by additionally arranging insulation board at interphase of busbars of a transformer substation. The determination method comprises the following steps of: (1) analyzing the thickness of an insulation board; (2) determining the mounting position of the insulation board; (3) determining the dimension of the insulation board; and (4) analyzing the effective shield range of the insulation board. According to the invention, when the hot line work is carried out at the interphase of the busbars of 110kC and 220kV transformer substations, the insulation board is determined to mounted at a place 0.3m and 0.5m away from the busbars of the adjacent side phases respectively; the thickness of the insulation board is not obliged to be smaller than 5mm; the height and the width of the 110kC basbar insulation board are not smaller than 3.1m and 1.9m respectively; the height and the width of the 220kV busbar insulation board are not smaller than 3.7m and 2.5m respectively; and the lap width is not smaller than 0.2m. In order to solve the problem of insufficient gap distance in the hot line work at the interphase of the busbars of the 110kC and 220kV transformer substations, the systemic and feasible scheme is provided and has important theoretical values and practical significance in guaranteeing the safe and stable operation of the 110kC and 220kV transformer substations.

Description

technical field [0001] The invention relates to the live maintenance operation of power transmission and transformation, in particular to a method for determining the safety of live work by installing insulating plates between the pipe mother phases of a substation. Background technique [0002] The substation is an extremely important link in the power grid, and its safe operation is directly related to the stability and operation of the entire power grid. With the continuous expansion of the grid scale and the continuous increase of the voltage level, the impact of substation accidents is becoming more and more serious. [0003] There are nearly 100 countries abroad that carry out live work in substations, among which the United States is the earliest. So far, except for a few states in the United States, live substation work has been carried out. The work carried out includes: live replacement of busbar drain wires, coupling capacitors, etc.; Russia, France, etc. have al...

AI Technical Summary

Problems solved by technology

[0013] Aiming at the deficiencies of the prior art, the present invention provides a method for determining the safety of live work by installing an insulating plate between the tube and bus phases in a substation. The existing problem of insufficient safety distance meets the safety requirements of power transmission and transformation live work to ensure the safe, reliable and stable operation of the power grid

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