Threshold value of DC array current and DC string voltage for fault detection in grid-connected photovoltaic system / Nurmalessa Muhammad … [et al.]

Muhammad, Nurmalessa and Zakaria, Nor Zaini and Shaari, Sulaiman and Omar, Ahmad Maliki (2020) Threshold value of DC array current and DC string voltage for fault detection in grid-connected photovoltaic system / Nurmalessa Muhammad … [et al.]. Scientific Research Journal, 17 (1). pp. 1-13. ISSN 2289-649X

Official URL: https://srj.uitm.edu.my/

Abstract

The failure detection in a grid-connected photovoltaic (PV) system has become an important aspect of solving the issue of the reduced energy output in the PV system. One of the methods in detecting failure is by using the threshold-based method to compute the ratio of actual and predicted DC array current and DC string voltage value. This value will be applied in the failure detection algorithm by using power loss analysis and may reduce the time, cost and labour needed to measure the quality of the energy output of the PV system. This study presented the threshold value of DC array current and DC string voltage to be implemented in the algorithm of fault detection in grid-connected photovoltaic (PV) system under the Malaysian climate. Data from the PV system located at Green Energy Research Center (GERC) was recorded in 12 months interval using the monocrystalline PV modules. The actual data was recorded using five minutes interval for 30 consecutive days. The prediction of the data was calculated using the mathematical method. The threshold value was determined from the ratio between actual and predicted data. The results show that the DC array current threshold value, σ is 0.9816. While, DC string voltage threshold value, λ is 0.9261. The proposed value may be beneficial for the determination of threshold value for regions with the tropical climate.

Metadata

Item Type: Article
Creators:
Creators
Email / ID Num.
Muhammad, Nurmalessa
nurmalessa@uitm.edu.my
Zakaria, Nor Zaini
UNSPECIFIED
Shaari, Sulaiman
UNSPECIFIED
Omar, Ahmad Maliki
UNSPECIFIED
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Dielectric devices
Divisions: Universiti Teknologi MARA, Shah Alam > Research Management Centre (RMC)
Journal or Publication Title: Scientific Research Journal
UiTM Journal Collections: UiTM Journal > Scientific Research Journal (SRJ)
ISSN: 2289-649X
Volume: 17
Number: 1
Page Range: pp. 1-13
Keywords: Threshold value, DC array current, DC string voltage, Photovoltaic
Date: 2020
URI: https://ir.uitm.edu.my/id/eprint/30094
Edit Item
Edit Item

Download

[thumbnail of 30094.pdf] Text
30094.pdf

Download (1MB)

ID Number

30094

Indexing

Statistic

Statistic details