Photovoltaic power optimization control system

Abstract

The invention discloses a novel photovoltaic power optimization control system. According to the photovoltaic power optimization control system, a layered and area-divided system structure is adopted, inverters and related equipment are divided into a plurality of areas, all the inverters in each area are connected with a corresponding second-stage controller through a corresponding second-stage switch, and the second-stage controllers are connected to a workstation and a first-stage controller through a first-stage switch; thus, the inverters of different areas can receive instructions simultaneously, the control cycle can be remarkably shortened, the control efficiency is increased, and the advantages are obvious when the photovoltaic power optimization control system is applied to photovoltaic power station projects with the capacity of 100MW or more; during the capacity-expansion upgrading of a photovoltaic power station, the capacity-expansion inverters can be divided into one or more areas, and the capacity-expansion upgrading can be realized by only increasing corresponding second-stage controllers without changing or even repealing the prior system structure and equipment. The photovoltaic power optimization control system has the advantages that the capacity-expansion upgrading of the photovoltaic power station can be carried out conveniently, the time / cost for the capacity-expansion upgrading can be effectively shortened / reduced, the progress of the projects is greatly increased, and the quality of the projects is greatly improved.

Description

technical field [0001] The invention relates to a novel photovoltaic power optimization control system structure, which belongs to the technical field of power system power generation. Background technique [0002] In recent years, with the development and maturity of photovoltaic technology, photovoltaic power stations have been vigorously promoted and large-scale construction has been carried out. The completed photovoltaic power station needs to be connected to the grid and power controlled to achieve power optimization and power dispatch. The power control sub-station needs to allocate dispatching instructions reasonably and send them to each inverter. The number of inverters in photovoltaic power plants ranges from twenty to thirty to as many as one to two hundred. Different (instructions only need to be issued to several generators), it takes too much time to issue instructions, which seriously affects the regulation performance, so a new system structure must be intr...

AI Technical Summary

Problems solved by technology

The power control sub-station needs to allocate dispatching instructions reasonably and send them to each inverter. The number of inverters in photovoltaic power plants ranges from twenty to thirty to as many as one to two hundred. Different (instructions only need to be sent to several generators), it takes too much time to send instructions, which seriously affects the regulation performance, so it is necessary to introduce a new system structure

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