Photovoltaic reverse power controller

Abstract

The invention provides a photovoltaic reverse power controller, which is applied to a solar photovoltaic generating system. At present, the conventional anti-reverse current relay in the market does not have the photovoltaic reverse power control function, can only control reverse power within a certain range and cannot ensure the photovoltaic generating system is a reverse current-free system. The photovoltaic reverse power controller receives information acquired and processed by a reverse power acquisition and monitoring system, intelligently controls main loops of the photovoltaic generating system to perform synchronization power generation or stop the synchronization power generation, and keeps the output power of the photovoltaic generating system automatically matched with the load consumed power to realize the reverse power control function. In the figure, an input port receives the information of the reverse power acquisition and monitoring system, and outputs a control command to a photovoltaic sub system after the information is calculated and processed by a singlechip.

Description

Technical field [0001] The utility model relates to a photovoltaic reverse power control and protection technology, which is applied to a solar photovoltaic power generation system. Background technique [0002] At present, the rapid development of the domestic solar photovoltaic power generation market has put forward new requirements and challenges for the solar photovoltaic power generation system. At present, in the domestic solar photovoltaic power generation, most of the grid-connected solar photovoltaic power generation systems require no reverse current system. In order to ensure that the photovoltaic power generation system does not have reverse flow and reverse power transmission into the grid, the photovoltaic system must have an anti-reverse current control and protection device. Most of these devices on the market are protected by anti-reverse current relays. This device cannot avoid the phenomenon of reverse power at all. It can only control the reverse power w...

AI Technical Summary

Problems solved by technology

In order to ensure that the photovoltaic power generation system does not have reverse flow and reverse power transmission into the grid, the photovoltaic system must have an anti-reverse current control and protection device. Most of these devices on the market are protected by anti-reverse current relays. This device cannot avoid the phenomenon of reverse power at all. It can only control the reverse power within a certain range, and there is no function of monitoring the photovoltaic power generation system. The degree of intelligence is low, and it cannot ensure that the photovoltaic power generation system is a non-reverse current system.

Images