Intelligent release of marine medium-voltage vacuum circuit breaker

Abstract

The invention relates to an intelligent release of a marine medium-voltage vacuum circuit breaker. The intelligent release of the marine medium-voltage vacuum circuit breaker is characterized by comprising a voltage sensor which is used for acquiring three-phase voltage signals and a current sensor which is used for acquiring three-phase current signals, and the voltage sensor and the current sensor are respectively connected with a signal conditioning unit. If a detected current is overloaded or short-circuited, three-section protection functions of overloading inverse time-lag long-time delay protection, overloading constant time-lag or reverse time-lag short-time delay protection and short-circuit instantaneous protection can be achieved according to a preset protective characteristic curve to drive a release circuit, the release circuit drives a shunt electromagnet to act, and the shunt electromagnet serves as an actuator to release the medium-voltage vacuum circuit breaker. The intelligent release of the marine medium-voltage vacuum circuit breaker is provided with the three-section protection functions; can achieve on-line detection and monitoring of electric power parameters; is provided with a communication unit for achieving functions of remote detection, remote communication and remote regulation; and is provided with a shock-resistant and vibration-resistant capacity, thereby being applicable to conditions of strong impact and strong vibration on ships.

Description

technical field [0001] The invention relates to an intelligent release device of a medium-voltage vacuum circuit breaker for ships. Background technique [0002] With the continuous development of new ships in my country and the advancement of modern technology and science, the capacity of ship power station systems is increasing and the degree of automation is increasing. Medium voltage vacuum circuit breakers have begun to be applied to medium voltage power systems of ships. The medium-voltage vacuum circuit breaker only has simple functions such as closing and opening, and cannot provide intelligent protection for faults such as overload and short circuit of the line and power supply; without voltage and current transformers, it cannot measure and monitor current, voltage and power online , power factor, frequency, harmonics, switch status and other power parameters; without communication function, the centralized control and management of the ship's power system cannot be ...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of new ships in my country and the advancement of modern technology and science, the capacity of ship power station systems is increasing and the degree of automation is increasing. Medium voltage vacuum circuit breakers have begun to be applied to medium voltage power systems of ships. The medium-voltage vacuum circuit breaker only has simple functions such as closing and opening, and cannot provide intelligent protection for faults such as overload and short circuit of the line and power supply; without voltage and current transformers, it cannot measure and monitor current, voltage and power online , power factor, frequency, harmonics, switch status and other power parameters; without communication function, the centralized control and management of the ship's power system cannot be realized; without the ability to resist shock and vibration, it cannot adapt to the strong shock and vibration environment on the ship

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