MEASUREMENT ERROR ANALYSIS AND CORRECTION FOR I-V CHARACTERISTIC OF PHOTOVOLTAIC ARRAY

被引：0
|
作者：
Yang Z. [1 ]
Su J. [1 ]
Wang H. [1 ]
Zhang J. [1 ]
机构：
[1] Education Ministry Engineering Research Center of Photovoltaic System, Hefei University of Technology, Hefei
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2023年 / 44卷 / 05期
关键词：
current voltage characteristics; distributed parameter; double capacitance; PV arrays;
D O I：
10.19912/j.0254-0096.tynxb.2022-0059
中图分类号：
学科分类号：
摘要：
The on-site I-V measurement of photovoltaic array in a photovoltaic power station can evaluate the current system power generation performance and array status，but the on-site transmission line impedance will cause error in I-V measurement，which not only affects the accuracy of the estimate but also is not beneficial to the policy-making of the photovoltaic power station operation. The article analyzes the influence mechanism of measurement line impedance and environmental parameters on the conventional dynamic capacitance I-V measurement method，and conducts simulation verification. According to the influence mechanism of the error and the equivalent model of the measurement loop，the article proposes a method for measuring the I-V characteristics of a dual-capacitor combination，and develops a prototype for experimental verification. The experimental results indicate that the measurement method can efficaciously eliminate the influence on I- V measurement of photovoltaic array by line distribution parameters and improve the measurement accuracy. © 2023 Science Press. All rights reserved.
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页码：210 / 216
页数：6
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