Live line work safety protection method of distribution line

Abstract

The invention discloses a safe protection method of distribution lines live working characterized in that a main insulation as well as a supplementary insulation is adopted to form a complete insulation multiple protection when the operation staff conducts distribution lines live working; the main insulation comprises an insulation operation tool, an insulation bearing tool and an air gap, the first defense line of the insulation protection is formed by using the insulation operation tool and the insulation bearing tool as a main insulation of the phase-ground and using the air gap as a main insulation of the interphase; the supplementary insulation comprises an insulation shading tool, an isolation tool and an insulation protection tool, the device insulation shading tool and the insulation isolation tool are used as reserve protection; a personal insulation protection tool is used as the last defense line which forms a safety protection of the insulation multiple protection. The operation staff has at least three defense lines by using the insulation multiple protection method, which cut off the short circuit current channel of the phase-ground or interphase during the distribution lines live wording and ensures the safety of the operation staff and device.

Description

technical field [0001] The invention belongs to the technical field of live work on power distribution lines, and in particular relates to a safety protection method adopted to ensure the safety of operators and equipment during live work on power distribution lines. technical background [0002] The 6-35kV power distribution network has the characteristics of wide distribution, many equipment, low insulation level, and direct user-facing. It is prone to failure under the influence of atmospheric overvoltage, pollution or other external factors, and due to the old and aging power supply facilities in some areas, the equipment is in good condition. The low rate increases the risk of accidents. Once the distribution network fails, it will directly affect the production and life of users. Carrying out live repair and maintenance of distribution lines can greatly improve the safe operation level of distribution lines and the reliability of power supply, which has great economic ...

AI Technical Summary

Problems solved by technology

[0002] The 6-35kV power distribution network has the characteristics of wide distribution, many equipment, low insulation level, and direct user-facing. It is prone to failure under the influence of atmospheric overvoltage, pollution or other external factors, and due to the old and aging power supply facilities in some areas, the equipment is in good condition. The rate is low, which increases the risk of accidents

[0003] For distribution lines, from the 1960s to the early 1980s, my country has promoted the live operation of distribution networks, but due to the lack of suitable personal safety protective equipment and irregular operation methods, many accidents have occurred in distribution network operations. , resulting in the suspension of live work on distribution lines in some areas

In particular, at that time, many workers were wearing shielding suits to carry out live work on distribution lines. During operation, if you don’t pay attention to the space occupied by your body or move a little too much, it may short-circuit the phase-to-ground and the air gap between phases, causing a short-circuit accident and causing casualties.