Distributed power supply distribution point constant volume optimization calculation method by considering voltage and environmental protection indexes based on opportunity constraint planning

Abstract

The invention relates to the technical field of power systems and automation thereof, more specifically to a distributed power supply distribution point constant volume optimization calculation methodby considering voltage and environmental protection indexes based on opportunity constraint planning. The method comprises the steps that the working temperature of a photovoltaic cell array, the actual working open-circuit voltage, the short-circuit current and the filling coefficient of a photovoltaic power supply array, the output voltage and output power of a photovoltaic power generation system and the output power of a wind turbine generator based on a wind speed influence factor are calculated, and an optimized objective function is set; conditions required to be satisfied by safe operation of the power grid is considered; opportunity constraint conditions are introduced; the installation position of the distributed power supply is optimized; an objective function F probability representation form is determined; and an MATLAB simulator is adopted to obtain the operation strategy of a decision variable, and mathematical modeling is performed on the three optimization indexes.

Description

technical field [0001] The present invention relates to the technical field of electric power system and automation thereof, and more specifically relates to a calculation method for distributed power supply point distribution constant capacity optimization based on chance constrained programming considering voltage and environmental protection indicators. Background technique [0002] The access of distributed generation (distributed generation, DG) makes the distribution network change from a simple radiation receiving network to a complex network with multiple power sources. DG is connected to the distribution network to run, which can save energy and reduce emissions, reduce system network loss and improve Power supply reliability and flexibility, however, DG output is greatly affected by the environment and climate, with obvious intermittency, uncertainty and volatility, which will affect the normal operation of the power system, and the degree of influence is closely re...

AI Technical Summary

Problems solved by technology

The problem of distributed power distribution and constant capacity optimization is to determine the optimal configuration of distributed power after connecting to the grid under various constraints. It can be seen that the problem of distributed power distribution and constant capacity optimization is a large-scale multi-objective optimization problem , and the optimization among the various sub-objectives has the possibility of mutually restricting and contradicting each other.

[0006] Considering that each node is located in different geographical areas, the uncertainty of wind turbine output due to the differences in equipment, wind energy resources, and wind speed characteristics in each area, as well as the ambient temperature, sunshine intensity, sunshine time, sunshine shadow, and sunshine angle Factors such as the randomness of photovoltaic power output make it more difficult to optimize the distribution network distributed power configuration

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