Photovoltaic module intelligent isolation switch

Abstract

The invention discloses a photovoltaic module intelligent isolation switch, which relates to a photovoltaic circuit safety protection device. The photovoltaic module intelligent isolation switch comprises an MOS transistor, a current sensor, a mutation current threshold control module, an isolation switch control circuit, a wireless receiving module and a working power supply, wherein the source and the gate of the MOS transistor are both connected with the isolation switch control circuit; the working power supply is respectively connected with the mutation current threshold control module, the isolation switch control circuit and the wireless receiving module; the mutation current threshold control module is connected with the isolation switch control circuit; the mutation current threshold control module is also connected with the current sensor; and the current sensor is connected with a magnetic ring coupling coil sleeving a post-stage output wire. An effective safety protection device is provided for the existing photovoltaic power station safety change and later new power station building, safety of the photovoltaic power station is ensured, the stability is good, the reliability is high, the practicability is strong, and promotion and use are facilitated.

Description

technical field [0001] The invention relates to a photovoltaic circuit safety protection device, in particular to an intelligent isolating switch of a photovoltaic module. Background technique [0002] At present, in the existing photovoltaic power generation technology, when there is a poor contact anywhere in the circuit of the string line in the power generation, and there is a flashover and arcing, there is no automatic circuit breaker protection and isolation at the moment of line arcing. equipment, and the lack of any protection measures and necessary automatic control equipment will cast a shadow over the safety of photovoltaics. Therefore, this problem has become a major safety technical problem to be urgently solved in the construction of photovoltaic power plants in the future. Designing a photovoltaic Component intelligent isolating switches are especially necessary. Contents of the invention [0003] In view of the deficiencies in the prior art, the purpose of...

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Problems solved by technology

[0002] At present, in the existing photovoltaic power generation technology, when there is a poor contact anywhere in the circuit of the string line in the power generation, and there is a flashover and arcing, there is no automatic circuit breaker protection and isolation at the moment of line arcing. equipment, and the lack of any protection measures and necessary automatic control equipment will cast a shadow over the safety of photovoltaics. Therefore, this problem has become a major safety technical problem to be urgently solved in the construction of photovoltaic power plants in the future. Designing a photovoltaic Component intelligent isolating switch is especially necessary

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