Method for optimizing configuration of intermittent distribution type power supply based on complementary

Abstract

The invention discloses a method for optimizing configuration of an intermittent distribution type power supply based on complementary. A target function of optimal configuration of the intermittent distribution type power supply based on the complementary is as follows: FORMULA1 (specifically being shown in the original PDF file), wherein FORMULA2 (specifically being shown in the original PDF file) is an electricity-sale gain expected value of a distributive power supply; FORMULA3 (specifically being shown in the original PDF file) is a saved grid loss cost expected value; FORMULA4 (specifically being shown in the original PDF file) is a waste exhaust gain expected value; CDG is investment cost of the distributive power supply; FORMULA5 (specifically being shown in the original PDF file) is a voltage improvement index expected value; and delta is a measurement factor for converting a voltage improvement index into comprehensive benefit. The method for optimizing the configuration of the intermittent distribution type power supply based on the complementary, disclosed by the invention, has the advantages of being capable of improving voltage level of a system, reducing grid loss, and improving utilization ratio of a renewable energy source.

Description

technical field [0001] The invention belongs to the technical field of electric power systems, and relates to a complementary intermittent distributed power supply optimization configuration method. Background technique [0002] Distributed generation (DG) based on clean and renewable energy, such as distributed wind generation (DWG), photovoltaic cells (PV), etc., has energy saving and emission reduction, environmental pollution reduction, line loss reduction, and improved Power quality and improved power supply reliability, etc., but at the same time, its power output is greatly affected by the climate environment, with obvious intermittent, random and fluctuation, which will affect the normal operation of the power system, and the degree of influence is related to the position and location of the DG. Capacity is closely related, so how to optimize the location and capacity of intermittent DG to make the system operate in the safest and most economical state has become one...

AI Technical Summary

Problems solved by technology

Although the above optimal configuration method has solved some related problems to a certain extent, it still has the following limitations: use deterministic variables and constraints to deal with wind power generation, photovoltaic cells and other output powers with obvious uncertainty and randomness. Intermittent DG; the optimization object type is single, and does not consider the probability distribution of intermittent DG output power in the entire space-time range, and the complementarity of the probability distribution of output power and system load power of various intermittent DGs in the entire space-time range

However, some literature studies have shown that the distribution parameters of wind speed and light intensity in each period are different, and there is complementarity.

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