High-voltage isolation device and method of three-phase high-voltage line controller

By using a transformer in a three-phase high-voltage line controller to generate a preset voltage difference AC power supply, and communication and connection with the controller through the host, switching control of the three-phase high-voltage line is realized, which solves the difficulty of voltage-withdrawal insulation equipment in the prior art The problem of uniformity and high cost has achieved efficient three-phase high-voltage line control.

CN119298042AActive Publication Date: 2025-01-10SHENZHEN HOPEWIN ELECTRONICS MATERIAL CO LTD +1
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Patent Information

Application Number
CN202411822943.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-12
Publication Date
2025-01-10
Estimated Expiration
2044-12-12

AI Technical Summary

Technical Problem

In the prior art, voltage-with-voltage insulation devices are required to be used when the output end of the three-phase high-voltage line controller goes to the middle of the line. Due to the diversification of control equipment, voltage-with-voltage insulation equipment is difficult to unify and costly.

Method used

A high-voltage isolation device for three-phase high-voltage line controller is designed, and AC power is supplied to the controller with a preset voltage difference through the transformer, and communication is connected with the controller through the host to realize switching control of the three-phase high-voltage line, avoiding the The requirement of using voltage-resistant insulation devices.

Benefits of technology

The uniformity and cost reduction of transformers are achieved, the model dependence of voltage-resistant insulation devices is avoided, and effective control of three-phase high-voltage lines is achieved through communication connections.

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Abstract

The invention relates to a high-voltage isolation device and method of a three-phase high-voltage line controller, which is applied to the technical field of high-voltage control, and comprises the following steps: on the basis of a unified three-phase transformer, transforming three groups of alternating current through the transformer to supply power to control equipment, a group of alternating current with the voltage difference being the preset voltage difference relative to the ground (null line) is transformed through the transformer to supply power to the host; the host is in communication connection with the controller on the three-phase line, the controller on the three-phase line responds to a control signal of the host and controls the switching device of the three-phase line, so that a voltage-withstanding insulation device in the prior art is avoided, and the transformer is not influenced by the model of control equipment relative to the voltage-withstanding insulation device and is easier to unify; and compared with a voltage-withstanding insulation device, the transformer is lower in cost.
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Citation Information

Patent Citations

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    CN105305453A

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    CN112099428A

  • Multi-Phase Drive System

    US20120033472A1

  • Power system with communication function applied to solid state transformer structure and communication module applied to solid state transformer structure

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