Automatic switching control device for photovoltaic micro-grid power generation system

Abstract

An automatic switching control device for a photovoltaic micro-grid power generation system comprises a measurement control unit, a 4G wireless communication network, and a background decision system. The measurement control unit is connected to the background decision system through the 4G wireless communication network. Through the 4G wireless communication network, the measurement control unit sends grid information data to the background decision system, and / or the background decision system issues an instruction to the measurement control unit. According to the device, the whole grid is taken into consideration, multiple power parameters are detected, a decision is made based on the multiple power parameters and a background expert resource library, and a photovoltaic system with the optimal combination is connected to the grid for operation. Therefore, energy waste is avoided, and the quality of electric energy is ensured.

Description

technical field [0001] The invention relates to intelligent control of electric power systems, in particular to an automatic switching control device for a photovoltaic micro-grid power generation system. Background technique [0002] With the development of society and economy, energy and environment have become important issues facing the world. Energy shortages and environmental degradation are becoming more and more prominent. The development and utilization of green energy has become the most effective way for countries all over the world to solve the energy crisis and environmental degradation. Solar energy has become a renewable energy with good prospects for development and utilization due to its abundant resources, cleanness and pollution-free. As the main way of photovoltaic power generation, photovoltaic grid-connected power generation technology has been more and more recognized and concerned by people, and has gradually become the mainstream of photovoltaic pow...

AI Technical Summary

Problems solved by technology

But the existing problems are: (1) DSP chip processing capacity is limited, and precise control such as voltage and current monitoring, inverter drive, harmonic control, switching, etc. is completed at the same time. The technical requirements are high and the reliability is low, so it is necessary to study higher processing Performance chips, or large-scale increase in investment

(2) In the new energy power generation system with thermal power, hydropower, nuclear power and other traditional energy as the backbone, connected in a balanced manner, the photovoltaic micro-grid power generation system is a beneficial supplement to the distribution network, and its switching needs to be macroscopically controlled on the whole , according to the load level and photovoltaic microgrid power generation capacity, select the most suitable photovoltaic microgrid system to put into the grid, so as to achieve a reasonable allocation of resources and save costs. At present, this part of the content is still blank

(3) If it is necessary to achieve macro-control, each photovoltaic micro-grid system must be monitored and the data sent to the background to make an optimal judgment after decision-making by the expert system. The single information and the development of background intelligent decision-making system are also the key issues to solve the effective grid connection of photovoltaic systems

The disclosed detection device detects multiple parameters, determines the fault, and can switch the battery of the photovoltaic system, but there is no description of the switching method of the photovoltaic system when it is put into the grid

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