A control device and control method for bypass switch of SVG equipment

Abstract

The invention relates to the technical field of high-voltage equipment, and discloses a control device for a bypass switch of SVG equipment, including a contactor connected in parallel on the AC side and an AC power-taking module, and the closing coil of the contactor is controlled by an optical fiber control module Connected to the energy storage capacitor, the optical fiber control module is connected to the upper controller, the upper controller is connected to the closing auxiliary contact of the contactor through the optical fiber control module, and the AC power acquisition module is connected to the energy storage capacitor and the optical fiber control The modules are connected to convert the alternating current on the AC side into two direct currents. One direct current supplies power to the optical fiber control module, and the other charges the energy storage capacitor. The optical fiber control module is used to receive the switching light control signal sent by the upper controller. Convert it into an electrical control signal to control the discharge of the energy storage capacitor, thereby controlling the closing of the contactor; convert the closing electrical signal of the receiving contactor into an optical signal and send it to the upper controller. The measurement structure of the invention is simple and has strong practicability.

Description

technical field [0001] The invention relates to the technical field of high-voltage equipment, in particular to a control device and a control method for a bypass switch of SVG equipment. Background technique [0002] In the SVG system of H full-bridge topology or H-bridge half-bridge topology, the power modules are connected in series, which is generally realized by means of redundant modules to improve the availability and reliability of the equipment, but when a power module fails , the system cuts off the main circuit switch, and after the entire system shuts down, the power supply is restored after manual troubleshooting. In general, SVG systems are installed in remote areas, and it is difficult for personnel to arrive at the scene to troubleshoot and restore power supply at the first time. At the same time, the indirect economic loss caused by the system power failure is relatively large. Components or faulty modules are short-circuited to quickly restore power supply...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a control device and a control method for a bypass switch of SVG equipment, which solves the problem of complex power acquisition and cumbersome wiring of the bypass switch of the existing SVG equipment, and uses electrical signals to control closing, which is easily disturbed and reliable. issues of low sex

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