A method for blasting and deicing overhead transmission lines with linear charges
A technology for overhead transmission lines and overhead transmission lines, applied in the direction of overhead lines/cable equipment, etc., which can solve problems such as power outages on transmission lines, high safety risks, and uncontrollable deicing
Active Publication Date: 2017-11-07
ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER
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Problems solved by technology
It solves the technical problems that the existing deicing method requires power outage of the transmission line, uncontrollable deicing (uncontrollable deicing may cause the tower of the transmission line to fall), high safety risk and large manual investment
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[0035] The present invention is described in detail below in conjunction with accompanying drawing:
[0036] A method for blasting and deicing an overhead power transmission line with a linear charge comprising the following steps:
[0037] A method for determining the charge amount of the de-icing detonating cord for overhead transmission line blasting:
[0038] The first step is to obtain the tower structure of the transmission line, the model of the ground wire, the horizontal span, the vertical span, and the topography;
[0039] The second step is to take three sections of 10 meters, 20 meters and 40 meters for the ground wire of the same type of transmission line; the 10-meter section is used to test the damage degree of the detonating cord blasting to the ground wire, and the 20 meters and 40 meters are used for detonation. Force test of cable blasting;
[0040] Step 3: In the laboratory, fix the two ends of the retrieved 10-meter ground wire separately, lay detonating...
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The present invention discloses an overhead transmission line ground conductive wire explosion deicing method using linear charge. With the method adopted, the technical problems of a requirement for the power outage of a power transmission line, uncontrollability of deicing, high safety risk of an existing deicing method and high manual input can be solved. The method includes the following steps that: the charge amount of an overhead transmission line ground conductive wire explosion deicing detonating cord is determined; overhead transmission line ground conductive wire explosion deicing stress and displacement testing is carried out; overhead transmission line ground conductive wire explosion deicing stress and displacement simulation is carried out; an overhead transmission line linear charge explosion deicing strategy is determined; and the laying method of the overhead transmission line linear charge explosion deicing detonating cord is determined. With the method adopted, the technical problem of a requirement for power outage of an existing overhead transmission line deicing method can be solved, and a calculation implementation method for solving problems in overhead transmission line ground conductive wire deicing is provided.
Description
technical field [0001] The invention relates to the technical field of deicing the ground wires of overhead transmission lines, in particular to a blasting deicing method for the ground wires of overhead transmission lines, so that the transmission lines can be quickly deiced without power failure in the case of icing, ensuring power transmission The safe operation of the line improves the power supply reliability of the power grid. Background technique [0002] Overhead transmission lines are the main transmission channels for long-distance power transmission and are important equipment to ensure the safe operation of the power grid. In recent years, every rainy and snowy weather in late winter and early spring, the ground wire of the transmission line is prone to icing, which may cause the transmission line to stop or trip; when the icing is severe, it may even cause the transmission line to collapse and disconnect, seriously threatening the power grid safe operation. If...
Claims
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IPC IPC(8): H02G1/02
CPCH02G1/02
Inventor唐震王欣伟张悦赵卫国穆广琪唐保国董理科王东升张洪峰
OwnerELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER