Power supply system of automatic re-close circuit breaker

Abstract

The invention relates to a power supply system of an automatic re-close circuit breaker. The power supply system of the automatic re-close circuit breaker comprises a self-generating power supply circuit module, a three-phase four-wire power supply circuit module, an auxiliary power supply circuit module, a power supply automatic selection circuit module and a power supply circuit module, wherein the power supply automatic selection circuit module is respectively connected with the self-generating power supply circuit module, the three-phase four-wire power supply circuit module and the auxiliary power supply circuit module, and the power supply circuit module is connected with the power supply automatic selection circuit module. According to the power supply system of the automatic re-close circuit breaker, provided by the invention, a self-generating power supply is adopting for supplying power, and the work security of a whole hardware system of the automatic re-close circuit breaker can be increased; and a suitable power supply is selected by the power supply automatic selection circuit module for supplying the power according to a real-time power supply situation, the power supply continuity of the whole hardware system can be ensured, and the working requirements of the automatic re-close circuit breaker on reliability and security can be more met.

Description

technical field [0001] The invention relates to a power supply system, more specifically, to a power supply system for an automatic reclosing circuit breaker. Background technique [0002] In the application of automatic reclosing circuit breakers, the power system is directly related to the reliability and safety of the entire hardware system. Therefore, the automatic reclosing circuit breaker power supply system generally adopts 220V or 380V single-phase single power supply. Although the above design is generally adopted, there are design defects: the single-phase power supply does not meet the relevant provisions of the national standard GB14048.2-2008 Appendix B "Circuit Breakers with Residual Current Protection" B.8.9.1: Residual current circuit breaker is required In the A, B, C three phases, the residual current protection function must work normally regardless of whether one of the phases is disconnected; at the same time, when the power supply phase fails, the powe...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the above-mentioned single power supply in the prior art cannot realize the reliable operation of the entire hardware system when the power supply is highly undervoltage (less than 150V) or loses voltage, and cannot fully satisfy the safety of the automatic reclosing circuit breaker and the defects of the working requirements of reliability, an automatic reclosing circuit breaker power supply system is provided, which is characterized in that it includes:

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