An operating method for replacing a medium-phase isolating switch with a load by the insulating rod method
An isolating switch and load-bearing technology, which is applied in switchgear, electrical components, etc., can solve the problems of narrow space, high safety factor, high cost of insulation bucket trucks and high personnel expenses.
Inactive Publication Date: 2019-07-19
YANTAI POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER +1
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Problems solved by technology
The replacement of the isolating switch by the intermediate potential operation method has the following disadvantages: 1. It depends on the terrain conditions, the terrain is rough, and the site is narrow and cannot meet the parking requirements of the vehicles; 2. The cost is high, and the cost of the insulated bucket arm truck and the personnel expenditure are higher than that of the climbing pole operation; 3. 、Compared with the intermediate potential operation, the ground potential operation is mainly completed through the operating lever, which ensures the distance between the personnel and the electrified body, and has a high safety factor
Method used
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Embodiment 1
[0050] Refer to the attached Figure 1-16 , the tools used in the working method of replacing the medium-phase disconnector with load by the insulating rod method in this embodiment mainly include the following components:
[0051] Locking ring 1, bottom ring 2, middle ring 3, metal head 4, nail piercing hole Ⅰ5, insulating transmission rod 6, insulating connecting ring 7, nail piercing hole Ⅳ8, card table Ⅲ9, nail hole Ⅱ10, card table Ⅳ11, Outer tube Ⅰ12, outer tube Ⅱ13, card platform Ⅰ14, end 15, intermediate sleeve 16, fixed tube 17, card platform Ⅱ18, card platform Ⅲ19, hollow card slot 20, vertical hollow slot 20-1, horizontal hollow slot 20- 2. Arc-shaped hollow groove 20-3, nail penetration hole Ⅲ21, lead wire shielding hanging plate 22, hook body Ⅰ23, hook body Ⅱ24, nail penetration 25, connector 26, horizontal mounting piece 27, fixing piece 28, plug joint 29, Handle slot 30, insulator cover 31, wire cover 32, card slot I33, card slot II34, handle 35, connector I36. ...
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The invention relates to an operating method for live line replacement of a disconnector by means of an insulating rod method, and the operating method is widely applied to work for replacing a disconnector in an overhead power distribution line by means of a ground potential method, and belongs to the technical field of the distribution line live line repair site. The operating method comprises following steps: hanging a lead wire shielding hanging board on an edge phase wire and an insulator ball head by means of an insulation operating rod to complete insulating shielding of the edge phaselead wire, and hanging an integrated shielding cover by means of the insulation operating rod to complete insulating shielding of an edge phase tension insulator, a wire clamp and a part of wires; disconnecting lead wires at two sides of a middle phase disconnector, the middle phase disconnector being in a power-off state at the moment, replacing a new disconnector by an operator; and connecting lead wires at two sides of the disconnector to a main wire by means of the insulation operating rod. According to the invention, power outage is not needed during the operation process, a whole set insulating shielding protection appliance is employed to carry out insulating shielding and isolation on an electrified body and a grounding body, the fact that the operator keeps an enough safe distanceaway from an electrified device is guaranteed, and the safety coefficient is high.
Description
technical field [0001] The invention relates to an operating method for on-load replacement of an isolating switch by an insulating rod method, which is widely used in the work of replacing an isolating switch by the ground potential method of an overhead power distribution line, and belongs to the technical field of on-site maintenance of power distribution lines. Background technique [0002] High-voltage isolating switch is widely used in 10KV power distribution lines, mainly used for "isolation of power supply, switching operation, connection and cut-off of small circuit current", without arc extinguishing function. Only when there is no load current, the circuit can be opened and closed, and the circuit can only be operated after disconnecting it with other equipment. Because of the wide range of applications, the common faults in the operation of the disconnector are: 1. The load is too heavy, and the contact resistance increases, causing the contact part to overheat; ...
Claims
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IPC IPC(8): H02B3/00
CPCH02B3/00
Inventor 闫同李启江许崇新韩培庆朱宏光李红新林令臣郝京卫于春来周明亮康宝华李相辉刁义鹏刘波磊赵阅群张洪奎
Owner YANTAI POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER