Solid-state action circuit breaker with electric energy quality monitoring function

Abstract

The invention discloses a solid-state action circuit breaker with an electric energy quality monitoring function. The solid-state action circuit breaker comprises a solid-state circuit breaker and an electric energy quality detection and execution module which are connected in sequence, the electric energy quality detection and execution module is used for collecting circuit signals and generating disconnection signals; and the solid-state circuit breaker performs on-off control on the circuit based on the disconnection signals. The electric energy quality detection and execution module comprises a power supply module, a core processing module, a detection module, a wireless communication module and a screen display module; the power supply module is used for supplying power and collecting the voltage signals of the circuit; the detection module is used for collecting the circuit current and the circuit residual current; the core processing module generates the disconnection signal based on the circuit current, the circuit residual current and the voltage signal; the power switch completes the on-off control of the circuit based on the on-off signal. According to the present invention, the application scene of the solid-state circuit breaker is expanded, and it can be guaranteed that the circuit works under the condition that the electric energy quality is good all the time.

Description

technical field [0001] The invention relates to the technical field of power quality monitoring, in particular to a solid state action circuit breaker with power quality monitoring function. Background technique [0002] With the promotion of DC micro-grid, circuit protection devices need to face more and more DC or AC-DC occasions. The traditional mechanical circuit breaker adopts the method of mechanical shutdown, which has a slow response speed and a short service life, and is prone to arcing in a DC environment. Solid-state circuit breakers use semiconductor switching devices for switching action, with fast switching speed, long service life, and no DC arcing phenomenon. Existing solid-state circuit breakers mostly focus on using thyristors, IGBTs and other devices as switching devices, and silicon carbide (SiC), as a third-generation semiconductor material, has the advantages of fast switching speed, low on-resistance, and good thermal conductivity. Greatly improve th...

AI Technical Summary

Problems solved by technology

[0004] The wide application of power electronics technology in various fields has brought many power quality problems to the power grid. A large number of non-linear loads aggravate the asymmetry of the power supply voltage, resulting in distortion of voltage and current waveforms. These factors that affect power quality may cause huge economic losses to the power grid. loss

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