Ice melting system for circuit of power distribution network and ice melting method of ice melting system

Abstract

The invention discloses an ice melting system for a circuit of a power distribution network and an ice melting method of an ice melting system. The system comprises a main line fixed AC ice melting unit, a long branch mobile DC ice melting unit and a short branch portable DC ice melting unit, wherein the main line fixed AC ice melting unit comprises an ice melting switch, an ice melting protection device and a fixed ice melting voltage output device, the long branch mobile DC ice melting unit comprises a mobile ice melting power generation device and a first ice melting rectification device which are connected with each other, and the short branch portable DC ice melting unit comprises a portable ice melting power generation device and a second ice melting rectification device which are connected with each other. The method comprises the step of performing AC ice melting or DC ice melting by selecting different ice melting units according to ice coating conditions and circuit types. Designs are performed according to a main line, a long branch and a short branch, ice melting of all circuits of the power distribution network is covered, the ice melting efficiency of the circuit of the power distribution network can be improved, the ice melting range is expanded, and the capability of resisting rain and snow disaster in a large range by the circuit of the power distribution network is improved.

Description

technical field [0001] The invention belongs to the technical field of electrical engineering, and in particular relates to an ice-melting system and an ice-melting method for distribution network lines. Background technique [0002] Since 2008, the large-scale rain, snow and freezing disasters in the south have caused heavy damage to the power systems of Hunan, Guizhou, Jiangxi, Zhejiang and other provinces. The distribution network lines are the most terminal of electricity sales, and they are widely distributed, mostly in micro-topographic and micro-meteorological areas. The frequent accidents of tower collapse and disconnection have directly affected the reliable power supply of users. The research and design of the distribution network line ice melting system is the key to ensure the reliability of power supply for users during ice disasters. [0003] At present, there are not many studies on the distribution network ice melting system. The distribution network ice mel...

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Problems solved by technology

[0003] At present, there are not many studies on the distribution network ice melting system. The distribution network ice melting devices developed by some scientific research institutes are mainly aimed at melting short lines and ultra-short lines. Carry out partial ice melting, and have not yet formed an ice melting system for a certain area

Moreover, there are many mixed line types in the distribution network, and generally only small cross-section conductors can be deiced, which is difficult

When a large-scale ice disaster occurs, the current configuration of ice melting devices is not enough to support the ice melting of all lines in the distribution network system in this area

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