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

Yang Zhenyu; Su Jianhui; Wang Haining; Zhang Jian

doi:10.19912/j.0254-0096.tynxb.2022-0059

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (5) : 210-216. DOI: 10.19912/j.0254-0096.tynxb.2022-0059

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

Yang Zhenyu, Su Jianhui, Wang Haining, Zhang Jian

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Abstract

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.

Key words

PV arrays / current voltage characteristics / distributed parameter / double capacitance

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Yang Zhenyu, Su Jianhui, Wang Haining, Zhang Jian. MEASUREMENT ERROR ANALYSIS AND CORRECTION FOR I-V CHARACTERISTIC OF PHOTOVOLTAIC ARRAY[J]. Acta Energiae Solaris Sinica. 2023, 44(5): 210-216 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0059

References

[1] 张国荣, 瞿晓丽, 苏建徽, 等. 基于动态电容充电的光伏阵列I-V测试仪[J]. 电子测量与仪器学报, 2009, 23(增刊1): 85-89.
ZAHNG G R, QU X L, SU J H, et al.Photovoltaic array I-V tester based on dynamic capacitor charging[J].Journal of electronic measurement and instrument, 2009, 23(S1): 85-89.
[2] SAYYAD J, NASIKKAR P.Design and development of low cost, portable, on-field I-V curve tracer based on capacitor loading for high power rated solar photovoltaic modules[J]. IEEE access, 2021, 9: 70715-70731.
[3] BASTOS E A, MEIRA AMARAL DA LUZ C, OLIVEIRA T M, et al. A curve tracer for photovoltaic modules based on the capacitive load method[C]//2019 IEEE 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference (COBEP/SPEC), São Paulo, Brazil, 2019.
[4] SPERTINO F, SUMATLI J, ANDREI H, et al.PV module parameter characterization from the transient charge of an external capacitor[J]. IEEE journal of photovoltaics, 2013, 3(4): 1325-1333.
[5] 朱珂, 苏建徽, 张健, 等. 考虑分布参数的光伏阵列测试仪建模及分析[J]. 电源技术, 2020, 44(11): 1626-1629, 1690.
ZHU K, SU J H, ZHANG J, et al.Modeling and analysis of photovoltaic tester which considering influence of distributed parameters[J]. Power source, 2020, 44(11): 1626-1629, 1690.
[6] LIU F, DUAN S, LIU B, et al.A variable step size inc MPPT method for PV systems[J]. IEEE transactions on industrial electronics, 2008, 55(7): 2622-2628.
[7] 刘文涛, 苏建徽, 彭传诲, 等. 中小功率光伏阵列I-V特性测试技术研究[J]. 电力电子技术, 2012, 46(1): 16-18.
LIU W T, SU J H, PENG C H, et al.Study on testing technology of small and medium wattage solar array I-V characteristic[J]. Power electronics technology, 2012, 46(1): 16-18.
[8] 彭湃, 程汉湘, 陈杏灿, 等. 光伏电池工程用数学模型及其模型的应用研究[J]. 电源技术, 2017, 41(5): 780-782, 789.
PENG P, CHENG H X, CHEN X C, et al.Mathematical model for photovoltaic cell engineering and its application research[J]. Power technology, 2017, 41(5): 780-782, 789.
[9] 张俊红. 光伏阵列及其关键技术的研究[D]. 北京: 北京交通大学, 2019.
[10] 代林旺, 金新民, 周啸. 光伏模拟电源中分段多项式拟合算法研究[J]. 电测与仪表, 2014, 51(5): 31-35.
DAI L W, JIN X M, ZHOU X.Research on piecewise polynomial fitting algorithm for PV cell simulator[J]. Electrical measurement & instrumentation, 2014, 51(5): 31-35.
[11] 冯慈璋, 马西奎. 工程电磁场导论[M]. 北京: 高等教育出版社, 2000.