Automatic reclosing switch of thyristor

Abstract

The invention relates to an automatic reclosing switch of a thyristor, which comprises an inverse parallel main circuit of the thyristor and a single-chip microcomputer control system, wherein the inverse parallel main circuit of the thyristor belongs to a non-contact point type power electronic element; and the single-chip microcomputer control system comprises a single-chip microcomputer and peripheral circuits; the peripheral circuits comprise a power supply signal sampling circuit, a single-chip microcomputer switching power supply forming circuit, a load signal sampling circuit, a keyboard / display interface, a switch state detection circuit, a trigger circuit, an alarm output interface, a dry contact output, a 232 serial port and an I / O expansion interface. The automatic reclosing switch of the thyristor adopts the modern power electronic technology and the micro-computer control technology for realizing the non-contact point type opening and closing functions, and can detect faults of a power supply, a load and the automatic reclosing switch in an on-liner manner; and the automatic reclosing switch of the thyristor can be used in unattended rooms for power distribution in telecommunications, mobile, power, radio and television, transportation and other industries, in particular to remote areas; furthermore, the non-contact point type automatic reclosing switch can reduce the maintenance workload of the rooms of staff, protect communication equipment, recover the normal work in time and reduce the secondary loss of power grid failure.

Description

technical field [0001] The invention relates to a thyristor automatic reclosing switch, in particular to a thyristor anti-parallel automatic reclosing non-contact switch controlled by a single chip computer. Background technique [0002] Up to now, manufacturers in Italy abroad, Suzhou City in Jiangsu Province, and Guangzhou City in Guangdong Province have provided automatic reclosing switches, or three-phase automatic reclosing leakage protection switches. Their common feature is the use of mechanical automation principles combined with modern The structure of electronic technology products still belongs to the contact type, and its common disadvantages are the shielded end brought by the contact type structure, the contact capacity is limited, and the contact arc and sparks bring safety hazards to special applications. Contents of the invention [0003] The object of the present invention is to provide a thyristor automatic reclosing switch, which is an intelligent autom...

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Problems solved by technology

[0002] Up to now, manufacturers in Italy abroad, Suzhou City in Jiangsu Province, and Guangzhou City in Guangdong Province have provided automatic reclosing switches, or three-phase automatic reclosing leakage protection switches. Their common feature is the use of mechanical automation principles combined with modern The structure of electronic technology products still belongs to the contact type, and its common disadvantages are the shielded end brought by the contact type structure, the contact capacity is limited, and the contact arc and sparks bring safety hazards to special applications.

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