Line loss calculation method of photovoltaic power station

Abstract

The invention discloses a line loss calculation method for a photovoltaic power station, and the method comprises the following steps: setting a plurality of reference regions, and obtaining a line loss coefficient mu of a corresponding photovoltaic power station in the reference regions; the distance between the target area and the reference area is obtained, and the line loss coefficient mu0 of the photovoltaic power station corresponding to the reference area closest to the target area is obtained. On the basis of the line loss coefficient mu0, the actual annual average line loss eta 0 of the photovoltaic power station corresponding to the target region is obtained by adopting the following line loss coefficient formula; the formula of the line loss coefficient is eta0 = mu0 * eta0, wherein eta0 is the annual rated line loss of the photovoltaic power station corresponding to the target region. According to the invention, the annual average line loss of the relative photovoltaic power station in the target area can be rapidly and accurately determined.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a method for calculating line loss of photovoltaic power plants. Background technique [0002] Line loss is an important factor affecting the power generation of photovoltaic power plants. The line loss of a photovoltaic power station is constantly changing with the changes of external conditions such as light, and there is a certain difference between the rated line loss value calculated according to the rated operating conditions and the actual value. In order to more accurately calculate the line loss of photovoltaic power plants, the foreign photovoltaic calculation software PVSYST simulation analysis software can calculate the line loss of photovoltaic power plants by setting relevant parameters and combining the light resource data in its database. It is an annual average with high accuracy. Although PVSYST simulation analysis software can be used to calculate the a...

AI Technical Summary

Problems solved by technology

Although PVSYST simulation analysis software can be used to calculate the annual average line loss more accurately, but the calculation is time-consuming and not convenient enough

Especially in the process of early bidding and preliminary work of investment budget, it will consume a lot of work if PVSYST simulation analysis software is used for analysis, but there is a certain difference between the line loss value calculated by rated power and the actual situation

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