Method and device for determining daily generating capacity of new energy user photovoltaic power generation system

Abstract

The invention discloses a method and device for determining the daily generating capacity of a new energy user photovoltaic power generation system. According to the characteristic relation between the output power of the photovoltaic power generation system and the sunshine-related parameters, calculating a generalized three-dimensional trapezoidal fuzzy set for the fuzzy uncertainty relation between the output power of the photovoltaic power generation system in each time period and the maximum, average, and minimum values of each sunshine-related parameter by means of a statistic analysis method; acquiring the battery energy storage state of the user in each time period, and determining a generalized three-dimensional trapezoidal fuzzy set of the battery energy storage charging active power control value in each time period according to the conditions of power supply dispatching and voltage regulation demand of photovoltaic power generation system accessing to a power distribution network; and determining the daily generating capacity of the photovoltaic power generation system under the first installed capacity by means of a fuzzy analysis method. The method and device can calculate the daily generating capacity of a new energy user photovoltaic power generation system and provide necessary technical support for the distributed new energy generation and the smart grid dispatching operation.

Description

Technical field [0001] The invention relates to the technical field of new energy photovoltaic power generation, in particular to a method and device for determining the daily power generation of a photovoltaic power generation system of a new energy user. Background technique [0002] Distributed photovoltaic power generation system for small users such as urban residents and large user groups such as commercial buildings, communities, and industrial areas is a system with complicated and interactive random and fuzzy uncertain events or parameters. Small new energy users such as urban residents with distributed photovoltaic power generation systems and large new energy user groups such as commercial buildings, communities, industrial areas, etc., under the influence of various uncertain random and fuzzy events or parameters, their daily power generation changes It has to be more random and fuzzy. [0003] In the past, the daily power generation of distributed photovoltaic power g...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for determining the daily power generation of a photovoltaic power generation system for new energy users, and the purpose is to solve the uncertainty of the prior art that does not consider various factors when determining the daily power generation of a distributed photovoltaic system for new energy users and randomness, resulting in poor practicality of calculation results

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