Fuzzy comprehensive evaluation method for peak shaving potential of aggregation group power supply

Abstract

The invention discloses a fuzzy comprehensive evaluation method for peak shaving potential of an aggregation group power supply. The method comprises the following steps of S1, determining peak shaving capability indexes of various types of power supplies, a1, determining a peak shaving potential index of the conventional power supply unit, wherein the index is based on the maximum and minimum technical output alpha g = Pg of the unit, wherein max-Pg, min, Pg, max, Pg and min are the maximum technical output and the minimum technical output of the unit g respectively, and a2, determining a high-energy load peak regulation potential index, optimizing the output of the thermal power and hydropower peak regulation unit by adding the high-energy load of the negative power supply, and absorbingwind and light curtailment electric quantity. According to the method, quantitative characterization is carried out on the peak regulation capacity of each type of power supply by using a fuzzy method, and on the basis, the peak regulation potential index, the output change amplitude, the output adjustment rate, the unit start-stop time and the peak regulation economy of the aggregated group power supply are proposed by considering the total capacity proportion of each power supply capacity in the group power supply.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a fuzzy comprehensive evaluation method for peak-shaving potential of aggregation group power sources. Background technique [0002] The peak-shaving unit is used to adjust the peak of the load. The power generation and transmission of the power system are carried out at the same time, and the power load changes with time, so the power generated will change with the change of power consumption. In this way to maintain a balance, generally speaking, the power plant responsible for peak regulation is a hydroelectric power plant, because the hydroelectric unit starts up quickly, and the load can be increased or decreased only by adjusting the guide vanes, while thermal or nuclear power plants are very suitable for peak regulation. If it is uneconomical, the combustion efficiency of fuel will be reduced, and the short-term load of nuclear power units will change too much or e...

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Problems solved by technology

[0003] The capacity of the peak-shaving unit depends on many factors. How to reasonably describe and organize all the factors to reflect the peak-shaving capacity is very difficult. This is mainly due to the ambiguity of the problem and the diversity of factors affecting the peak-shaving capacity of the unit. It is difficult to express in a quantitative relationship, thus affecting the economics of peak shaving and causing a waste of resources

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