Alternating-current/direct-current test power source device of ultrahigh-voltage power transmission and transformation icing device

Abstract

The invention discloses an alternating-current / direct-current test power source device of an ultrahigh-voltage power transmission and transformation icing device. One end of a voltage regulator preceding-stage high-voltage switch cabinet is connected with a high-voltage power source. The other end of the voltage regulator preceding-stage high-voltage switch cabinet is connected with the wire inlet end of a column type voltage regulator Ty. The wire outlet end of the column type regulator Ty is connected with a testing transformer T through a voltage regulator posterior-stage high-voltage switch cabinet and a silicon controlled rectifier (SCR). An alternating-current-side protective resistor R1, a first capacitor voltage divider C1 and a second capacitor voltage divider C2 are connected to the testing transformer T in series in sequence. One branch of the wire outlet end of the testing transformer T is directly connected with the ultrahigh-voltage power transmission and transformation icing device. The other branch of the wire outlet end of the testing transformer T is connected with the ultrahigh-voltage power transmission and transformation icing device via a voltage doubling capacitor C', a first high-voltage silicon rectifier stack D1 and a direction-current side protective resistor R2 in sequence. By the adoption of the alternating-current / direct-current test power source device of the ultrahigh-voltage power transmission and transformation icing device, the requirements for full-size icing test on an ultrahigh-voltage-level device are met, the alternating-current / direct-current power source can stand frequent icing flashover, and the technological means and the level of an icing test research are improved.

Description

technical field [0001] The invention relates to the technical field of ultra-high voltage power transmission and transformation icing equipment, in particular to an AC / DC test power supply device for ultra-high voltage power transmission and transformation icing equipment. Background technique [0002] my country has a vast territory and complex and diverse climate and environment. With the large-scale development of power grids, EHV transmission lines inevitably pass through complex environments such as high altitudes, ice, and pollution. With the increase of extreme weather brought about by global warming, the occurrence area and frequency of ice-covered and snow-covered disasters have increased. In recent years, large-scale power facility failures and power outages have been caused many times in some areas due to ice and heavy snow. , ice disaster is one of the important hazards of the electric power industry. [0003] There are many reasons for power grid icing disaste...

AI Technical Summary

Problems solved by technology

The domestic and foreign researches on icing of power transmission and transformation equipment mainly focus on the mechanism and short-sample test. In addition, the methods are different and the conditions are limited.

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