Special-purpose circuit breaker of low-voltage anti-islanding device

Abstract

The invention discloses a special-purpose circuit breaker of a low-voltage anti-islanding device. The special-purpose circuit breaker includes an anti-islanding closing part and a line protection part. An output end of a current signal acquisition unit in the line protection part is connected with an input end of a single-chip microcomputer control unit. An output end of the single-chip microcomputer control unit is connected with an input end of a fault judgment unit. An output end of the fault judgment unit is connected with an input end of a signal driving unit. An output end of the signal driving unit is connected with a control end of a tripping mechanism. An operation mechanism of the tripping mechanism is in driving connection with a linkage rod, which is arranged on a closing-preventing electromagnet, through a draw bar. The closing-preventing electromagnet is connected with a tripper power supply terminal through a mutual inductor and a control circuit.

Description

technical field [0001] The invention relates to a special circuit breaker for a low-voltage anti-islanding device. Background technique [0002] The current sensor and microcomputer monitor the vacuum degree of the vacuum bag. It uses wireless transmission signal to receive, but it cannot detect the vacuum circuit breaker above 110,000 KV, so the island effect cannot be eliminated, which brings great safety hazards to electric power maintenance personnel. , and conventional products cannot be energized for a long time, and once tripped, the power must be cut off, otherwise the coil will be burned. Contents of the invention [0003] The invention provides a special circuit breaker for a low-voltage anti-islanding device, which can eliminate the islanding effect and improve safety. [0004] The present invention adopts the following technical solutions: a special circuit breaker for low-voltage anti-islanding device, which is characterized in that it includes an anti-island...

AI Technical Summary

Problems solved by technology

[0002] The current sensor and microcomputer monitor the vacuum degree of the vacuum bag. It uses wireless transmission signal to receive, but it cannot detect the vacuum circuit breaker above 110,000 KV, so the island effect cannot be eliminated, which brings great safety hazards to electric power maintenance personnel. , and conventional products cannot be energized for a long time, and once tripped, the power must be cut off, otherwise the coil will be burned

Images