Photovoltaic source network control method based on optimal regional economy and system

Abstract

The invention discloses a photovoltaic source network control method based on optimal regional economy. The method comprises steps that, step 1, a control area of a photovoltaic source network coordination control system is determined; step 2, an optimal economy target function is determined according to a distributed photovoltaic generation device in the control area, types of controllable equipment and an income mode prescribed by the electrical network; step 3, photovoltaic output of the next day is predicted according to weather forecast information, real-time and historical weather station information and real-time and historical photovoltaic generation information; and step 4, economy optimization control on the control area is carried out by utilizing the an optimal economy target function in the step 2 according to economy constraint conditions given by an active power distribution network energy management system, an electrical constraint condition and photovoltaic output predicted in the step 3. Through the method, problems of large communication pressure, time-delay control and optimization algorithm complexing existing in centralized large-scale consumptive distributed energy generation in an active power distribution network in the prior art are solved.

Description

technical field [0001] The invention belongs to the coordinated control technology of local control areas under the active distribution network connected to distributed photovoltaic power generation units on a large scale, and in particular relates to a coordinated control method and system of photovoltaic source network based on regional economic optimization. Background technique [0002] As society and the government pay more and more attention to environmental protection, renewable energy is getting more and more attention, and photovoltaic power generation is getting more and more attention because of its convenient access to the grid and simple installation and maintenance. At present, my country's solar power generation is mainly a centralized photovoltaic power generation system, and the power generation cost is about 1.2 yuan / kWh. In the next few years, my country's solar power generation will change from a centralized photovoltaic power generation system to a distri...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a coordinated control method and system for photovoltaic source networks based on regional economic optimization, so as to solve the problem of large-scale consumption of distributed energy generation by centralized communication in the existing active distribution network Increased pressure, control delay, complexity of optimization algorithm, etc.

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