Method for determining parameters of transmission line overhead ground wire direct-current ice-melting device

Abstract

The invention relates to a method for determining parameters of a transmission line overhead ground wire direct-current ice-melting device. The method comprises the following steps of: (1) collecting main parameters of each overhead ground wire and main parameters of the transmission line in the running scope of the transmission line overhead ground wire direct-current ice-melting device; (2) selecting one overhead ground wire and one transmission conductor in serial connection for melting ice in the manner of one-entering one-exiting ice-melting; (3) determining a minimal ice-melting current for each overhead ground wire; (4) determining a direct current voltage and capacity of each overhead ground wire; (5) determining a rated output voltage and rated capacity of the direct-current ice-melting device, and combining the ice-melting current to determine a running trigger angle of the ice-melting device; and (6) determining the current and capacity overload capability of the transmission line overhead ground wire direct-current ice-melting device as 1.2 times and rated 1 hour. According to the method provided by the invention, the quick ice-melting of each overhead ground wire is met, the capacity of the direct-current ice-melting device is reduced as much as possible, the investment is saved and the safety of running is improved.

Description

technical field [0001] The present invention is a method for determining the parameters of a DC deicing device for an overhead ground wire of a power transmission line, which determines the DC deicing method for an overhead ground wire by comprehensively considering the ambient temperature, ice thickness, light intensity, carrying capacity of the overhead ground wire, and different wiring modes. The main parameter of the device. Background technique [0002] The overhead ground wire of transmission lines is an important part of high-voltage transmission lines. It can reduce lightning accidents, shield electromagnetic waves, and improve the safety of transmission line operation. For a long time, low-temperature, rainy and snowy weather has been one of the serious threats to the icing of overhead ground wires. Severe icing will cause strand breakage, ice-covered dancing, and ice-off jumps of overhead ground wires, thus making overhead ground wires lose their protection and cau...

AI Technical Summary

Problems solved by technology

At present, there is no systematic method for determining the main parameters of the deicing device for overhead ground wires of transmission lines

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