Photovoltaic combiner box

Abstract

The invention relates to a photovoltaic combiner box. The photovoltaic combiner box comprises a box body; at least two incoming branches, a copper bus-bar and an outgoing circuit breaker are arrangedin the box body; the output of the incoming branches are connected with the copper bus-bar; the output of the copper bus-bar is connected with an output loop; the outgoing circuit breaker is arrangedon the output loop; the incoming branches are provided with incoming circuit breakers respectively; a smart meter module and a circuit breaker switching state detection module which is used for detecting the switching states of the outgoing circuit breaker and the incoming circuit breakers are arranged in the box body; and the output of the circuit breaker switching state detection module is connected with the smart meter module. According to the photovoltaic combiner box, the switching states of the circuit breakers can be monitored in real time, so that whether the circuit breakers work normally can be known in real time; and when a fault occurs on the photovoltaic combiner box, time for locating and eliminating the fault can be saved, and the operation maintenance of a power station ismore convenient.

Description

technical field [0001] The invention relates to a photovoltaic combiner box. Background technique [0002] With the smooth advancement of the national new energy strategy, the construction of photovoltaic power plants is in full swing. At present, most of the photovoltaic power plants that have been built use centralized inverter solutions. In order to reduce the amount of cables, improve system stability, and facilitate maintenance, a photovoltaic DC combiner box is generally installed between the centralized inverter and the photovoltaic array. And in order to facilitate users to remotely monitor various parameters of photovoltaic power plants and combiner boxes, intelligent monitoring functions are generally added to photovoltaic DC combiner boxes. [0003] Compared with centralized inverter solutions, string inverter solutions are more and more used because of their high power generation efficiency, low failure rate, and high maintainability. In the string inverter ph...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a photovoltaic combiner box to solve the problem that the existing combiner box cannot grasp the internal key components in real time, such as the state of the circuit breaker

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