Monitoring Current, Voltage and Power in Photovoltaic Systems

被引：0
|
作者：
Driesse, Anton [1 ]
Stein, Joshua S. [2 ]
Riley, Daniel [2 ]
Carmignani, Craig [2 ]
机构：
[1] PV Performance Labs, Freiburg, Germany
[2] Sandia Natl Labs, Albuquerque, NM 87185 USA
来源：
2015 IEEE 42ND PHOTOVOLTAIC SPECIALIST CONFERENCE (PVSC) | 2015年
关键词：
photovoltaic systems; monitoring; sampling rate; analog filter; digital filter; decimation; CLOUD ENHANCEMENT;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Accurate photovoltaic system performance monitoring is critical for profitable long-term operation. Irradiance, temperature, power, current and voltage signals contain rapid fluctuations that are not observable by typical monitoring systems. Nevertheless these fluctuations can affect the accuracy of the data that are stored. We closely examine electrical signals in one operating PV system recorded at 2000 samples per second. Rapid fluctuations are analyzed, caused by line-frequency harmonics, anti-islanding detection, MPPT and others. The operation of alternate monitoring systems is simulated using a wide range of sampling intervals, archive intervals and filtering options to assess how these factors influence final data accuracy.
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页数：6
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