High potential side energy supplying device of active electronic type photoelectric current mutual inductor

Abstract

The invention relates to an active electronic photoelectric current transformer high-voltage side power supply device, belonging to the field of power system technique; the device of the invention comprises a circuit A which consists of a first high-voltage energy storage coil, a first energy leakage protection circuit and a voltage processing circuit a which are sequentially connected one after another, a circuit B which consists of a second high-voltage energy storage coil, a second energy leakage protection circuit and a voltage processing circuit b which are sequentially connected one after another, and a laser component which is connected with the circuit B. The device of the invention has the advantages of small volume, compact structure, simple insulation encapsulation and safe usage, and can ensure the electronic transformer to work normally and continuously within an extremely great current range.

Description

technical field [0001] The invention belongs to the technical field of power systems, in particular to the structural design of high-voltage energy harvesting equipment. Background technique [0002] In recent years, with the development of digital technology, digital substation has become an inevitable trend, and the research of its main equipment, electronic transformer (also known as photoelectric transformer), has also made continuous progress. Electronic transformers are divided into active and passive. There are two types of source. Among them, the active type is developing rapidly, and there are already products running on the grid in China. The electronic transformer directly responds to the change of the measured analog quantity with its optical digital output. According to the standards of the International Electrotechnical Commission, the advantages of electronic current transformers are: the Rogowski coil is used as a primary converter to achieve large current ...

AI Technical Summary

Problems solved by technology

However, on the primary side of active transformers, the method of obtaining power is the biggest technical problem in the development

[0005] However, in the existing energy supply technology, when the bus current is small, the high-voltage side cannot obtain enough energy to supply the electronic circuits on the high-voltage side to work. In addition, the laser energy supply method is completely used. Because the laser supply energy is limited and it needs to work for a long time, other The life expectancy is yet to be tested, and it is in the experimental stage of product operation

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