Method for evaluating photovoltaic capacity credit based on load day and night peak difference constraint

Abstract

The present invention discloses a method for evaluating a photovoltaic capacity credit based on a load day and night peak difference constraint, and belongs to the technical field of operation of a power system comprising a photovoltaic power station. The method mainly comprises the following steps of: firstly, based on a scene cutting technology of the Kantorovich Distance, screening out a typical daily output scene capable of showing the annual output characteristic of the photovoltaic power station, and simplifying calculation on reliability of the power system comprising the photovoltaic power station; secondly, calculating a reliability level of the original system according to a forced outage rate, and at the equal reliability level, calculating effective load capacity of the photovoltaic power station by adopting a chord cutting method; and finally, correcting the effective load capacity of the photovoltaic power station according to the load day and night peak difference constraint, and calculating the capacity credit. According to the present invention, the method is simple in implementation and is high in calculating speed, and the photovoltaic power generation credit capacity can be comprehensively and accurately evaluated.

Description

technical field [0001] The invention belongs to the technical field of power system operation including photovoltaic power stations, and more particularly, relates to a method for evaluating the reliability of photovoltaic capacity based on the constraint of load diurnal peak difference. Background technique [0002] With the continuous growth of global energy demand and the excessive consumption of fossil fuels, the energy crisis and environmental pollution problems are becoming more and more serious, and all countries in the world are committed to the research and development of sustainable and clean energy. Among them, solar energy has gradually become a hot spot of social concern due to its rich resources, clean and pollution-free, and small geographical restrictions. In recent years, with the increasing maturity of photovoltaic power generation technology and the effective incentives of energy policies, photovoltaic power generation technology has achieved sustained and...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method for evaluating the reliability of photovoltaic capacity based on the constraint of the peak difference between day and night of load, with the purpose of quickly and accurately evaluating the confidence capacity of photovoltaic power generation; The calculation process of power generation capacity reliability is very complicated, resulting in a large amount of calculation

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