Plug and play detecting device for photovoltaic power generation grid-connected system

Abstract

The invention discloses a plug and play detecting device for a photovoltaic power generation grid-connected system, belonging to the technical field of new energy resource power generation and electrics. The plug and play detecting device comprises a power supply circuit, a photovoltaic cell access circuit, a storage battery access circuit, an inverter access circuit, a load selector, a photovoltaic cell detection load circuit, an inverter detection static load circuit, an inverter dynamic load circuit and a DSP (Digital Signal Processor). The invention has the advantages that plug and play is realized, and faults of a power generation system are determined through data acquisition; a photovoltaic cell board and an inverter are detected under various load working conditions, a plurality of photovoltaic cells to be detected can be switched while detection, the power generation states of the plurality of photovoltaic cells can be compared and detected, and the detecting efficiency and accuracy of the photovoltaic cells are increased; and a pulse generation device and a time delay device can be set according to the actual load conditions corresponding to different power generation devices, so that a simulated load more approaches to the actual condition, and the detecting accuracy is improved.

Description

technical field [0001] The invention belongs to the field of new energy power generation and electrical technology, and specifically relates to a detection device for a plug-and-play photovoltaic power generation grid-connected system. Background technique [0002] With the promulgation and implementation of the "Renewable Energy Law", the basic principles of the grid-connected electricity price for renewable energy power generation have become transparent, and the calls for higher cost of photovoltaic power generation seem to have decreased, but there has been no substantial change. In the proposed draft of the "Proposal on Tiered Electricity Pricing and Promoting the Development of Photovoltaic Power Generation in my country", several experts in my country's solar energy field agreed that: "From the perspective of the amount of resources, the universality of distribution, and the reliability of technology, photovoltaic power generation is more advanced than other renewable e...

AI Technical Summary

Problems solved by technology

[0003] Existing detection tools can only detect photovoltaic panels and inverters under a single load condition, and there is no way to detect the matching of photovoltaic panels and inverters under various load working conditions

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