Light-operated modularization intelligent vacuum switch with phase-selecting function

Abstract

The invention provides a light-operated modularization intelligent vacuum switch with the phase-selecting function, comprising an intelligent phase-selecting controller low-potential unit, a high-potential unit, a power driving unit, a multi-way energy-acquiring operating power system, a permanent magnet actuating mechanism, a vacuum arc extinguishing chamber, an outer insulating system, and the like. A DSP signal processor with high performance and flexible control technique are adopted to rapidly and accurately judge the optimum switching phase of the switch for reliable operation; an optical control interface is adopted to realize high-pressure and low-pressure isolation, simplify the insulating structure and ensure strong anti-jamming ability; a novel permanent magnet actuating mechanism is adopted to ensure simple structure, flexible control and high reliability; and a novel reliable power source scheme with a multi-way energy-acquiring operating power system for acquiring energy by current, voltage and low potential is adopted. According to the requirement, series-connected and parallel-connected building block combination can be carried out on the light-operated modularization intelligent vacuum switch with the phase-selecting switch so as to realize the intelligent vacuum switch with higher voltage grade.

Description

Technical field [0001] The invention relates to a light-controlled modular intelligent vacuum switch, in particular to a practical light-controlled modular intelligent vacuum switch with a phase selection function, belonging to the technical field of power high-voltage switches. Background technique [0002] Sulfur hexafluoride (SF 6 ) Switch has always been dominant, but due to SF 6 It has a strong greenhouse effect on the earth’s atmosphere, so better alternatives must be found. The vacuum switch is a new type of power switch with great development potential. However, due to the special nature of the vacuum medium, the vacuum switch currently has a strong advantage only in the low and medium voltage level; and due to the limitations of technology and processing technology, vacuum The parameters such as the rated current of the switch and the rated short-circuit current cannot be greatly improved, and cannot meet the high current application occasions. The above reasons limit t...

AI Technical Summary

Problems solved by technology

Vacuum switch is a new type of power switch with great development potential, but due to the special properties of the vacuum medium, the vacuum switch currently only has a strong advantage in the medium and low voltage voltage levels; and due to limitations in technology and processing technology, vacuum Parameters such as switch rated current and rated short-circuit current cannot be greatly improved, and cannot meet high-current applications

The above reasons limit the application of vacuum switches in high voltage, high current and other fields

There are great difficulties in the vacuum switch adopting the single-break technology route, while the traditional vacuum switch adopting the multi-break technology route is prone to mechanical failure due to its complex structure and large number of operating mechanism components

[0003] Vacuum switch applied to switching capacitive loads (capacitor banks, no-load transmission lines) or inductive loads (no-load transformers, reactors), the switching transient process brought about by the opening and closing operation will produce various Interference, causing overvoltage and overcurrent, and even spread to the remote end to affect users

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