Distributive photovoltaic generating grid-connected smart black box and application thereof

Abstract

The invention provides a distributive photovoltaic generating grid-connected intelligent black box. The distributive photovoltaic generating grid-connected intelligent black box comprises a housing, and a control circuit board arranged in the housing; the control circuit board comprises a CPU circuit module, a liquid crystal display circuit, a wireless communication module, an intelligent lock module, a satellite positioning module, a power circuit module, a multi-current-voltage sampling circuit module, an open-closing control circuit module, a circuit breaker with a shunt trip, a grid connecting end, an user connecting end and a distributive generating grid-connected connecting end, wherein the liquid crystal display circuit, the wireless communication module, the intelligent lock module, the satellite positioning module, the power circuit module, the multi-current-voltage sampling circuit module, the open-closing control circuit module, the circuit breaker with the shunt strip, the grid connecting end, the user connecting end and the distributive generating grid-connected connecting end are respectively connected with the CPU circuit module. The distributive photovoltaic generating grid-connected intelligent black box has the advantages that the generation grid connection and a user power wiring are integrated, and thus the controllability is improved; the mounting location of a grid-connected device is flexibly selected, the mounting is convenient, the workload is small, and the working efficiency is high; the interference from outside natural conditions and human factors can be avoided, and thus the safety and reliability of operation are ensured; the daily maintaining workload is decreased, and the maintaining cost is low; the independence is high, and the intelligence degree is raised; and the development demand of an intelligent grid can be completely met.

Description

technical field [0001] The invention relates to a distributed photovoltaic power generation grid-connected intelligent black box and an application thereof, belonging to the technical field of new energy sources in the electric power industry. Background technique [0002] With the rapid development of photovoltaic power generation technology, the amount of distributed photovoltaic power generation connected to the grid is increasing, and the grid connection device has become one of the problems restricting the safety of the power grid. Distributed photovoltaic power generation adopts a complex wiring method of two electric energy meters and a small circuit breaker to realize grid connection. This distributed photovoltaic power generation grid connection method has the following shortcomings: 1) It is difficult to install and select a grid connection device, and the installation workload is large. High work intensity and low work efficiency; 2) During the operation process, ...

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Problems solved by technology

Distributed photovoltaic power generation adopts a complex wiring method of two electric energy meters and a small circuit breaker to realize grid connection. This distributed photovoltaic power generation grid connection method has the following shortcomings: 1) It is difficult to install and select a grid connection device, and the installation workload is large. High work intensity and low work efficiency; 2) During the operation process, it is extremely susceptible to interference from external natural conditions and human factors such as rain, ice, snow, dust and corrosive gases, and there are g

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