Online two-section PV array fault diagnosis with optimized voltage sensor locations

Yihua Hu, Jiangfeng Zhang, Wenping Cao, Jiande Wu, Gui Yun Tian, Stephen J. Finney, James L. Kirtley

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Photovoltaic (PV) stations have been widely built in the world to utilize solar energy directly. In order to reduce the capital and operational costs, early fault diagnosis is playing an increasingly important role by enabling the long effective operation of PV arrays. This paper analyzes the terminal characteristics of faulty PV strings and arrays, and it develops a PV array fault diagnosis technique. The terminal current-voltage curve of a faulty PV array is divided into two sections, i.e., high-voltage and low-voltage fault diagnosis sections. The corresponding working points of healthy string modules and of healthy and faulty modules in an unhealthy string are then analyzed for each section. By probing into different working points, a faulty PV module can be located. The fault information is of critical importance for the maximum power point tracking and the array dynamical reconfiguration. Furthermore, the string current sensors can be eliminated, and the number of voltage sensors can be reduced by optimizing voltage sensor locations. Typical fault scenarios including monostring, multistring, and a partial shadow for a 1.6-kW 3 x 3 PV array are presented and experimentally tested to confirm the effectiveness of the proposed fault diagnosis method.

LanguageEnglish
Pages7237-7246
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Volume62
Issue number11
Early online date19 Jun 2015
DOIs
Publication statusPublished - 1 Nov 2015

Fingerprint

Failure analysis
Sensors
Electric potential
Solar energy
Costs

Keywords

  • fault diagnosis
  • optimization
  • photovoltaics
  • terminal characteristics
  • voltage sensors

Cite this

Hu, Yihua ; Zhang, Jiangfeng ; Cao, Wenping ; Wu, Jiande ; Tian, Gui Yun ; Finney, Stephen J. ; Kirtley, James L. / Online two-section PV array fault diagnosis with optimized voltage sensor locations. In: IEEE Transactions on Industrial Electronics. 2015 ; Vol. 62, No. 11. pp. 7237-7246.
@article{31330327100040f4a5f66600dade40d9,
title = "Online two-section PV array fault diagnosis with optimized voltage sensor locations",
abstract = "Photovoltaic (PV) stations have been widely built in the world to utilize solar energy directly. In order to reduce the capital and operational costs, early fault diagnosis is playing an increasingly important role by enabling the long effective operation of PV arrays. This paper analyzes the terminal characteristics of faulty PV strings and arrays, and it develops a PV array fault diagnosis technique. The terminal current-voltage curve of a faulty PV array is divided into two sections, i.e., high-voltage and low-voltage fault diagnosis sections. The corresponding working points of healthy string modules and of healthy and faulty modules in an unhealthy string are then analyzed for each section. By probing into different working points, a faulty PV module can be located. The fault information is of critical importance for the maximum power point tracking and the array dynamical reconfiguration. Furthermore, the string current sensors can be eliminated, and the number of voltage sensors can be reduced by optimizing voltage sensor locations. Typical fault scenarios including monostring, multistring, and a partial shadow for a 1.6-kW 3 x 3 PV array are presented and experimentally tested to confirm the effectiveness of the proposed fault diagnosis method.",
keywords = "fault diagnosis, optimization, photovoltaics, terminal characteristics, voltage sensors",
author = "Yihua Hu and Jiangfeng Zhang and Wenping Cao and Jiande Wu and Tian, {Gui Yun} and Finney, {Stephen J.} and Kirtley, {James L.}",
note = "{\circledC} 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.",
year = "2015",
month = "11",
day = "1",
doi = "10.1109/TIE.2015.2448066",
language = "English",
volume = "62",
pages = "7237--7246",
journal = "IEEE Transactions on Industrial Electronics",
issn = "0278-0046",
number = "11",

}

Online two-section PV array fault diagnosis with optimized voltage sensor locations. / Hu, Yihua; Zhang, Jiangfeng; Cao, Wenping; Wu, Jiande; Tian, Gui Yun; Finney, Stephen J.; Kirtley, James L.

In: IEEE Transactions on Industrial Electronics, Vol. 62, No. 11, 01.11.2015, p. 7237-7246.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Online two-section PV array fault diagnosis with optimized voltage sensor locations

AU - Hu, Yihua

AU - Zhang, Jiangfeng

AU - Cao, Wenping

AU - Wu, Jiande

AU - Tian, Gui Yun

AU - Finney, Stephen J.

AU - Kirtley, James L.

N1 - © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

PY - 2015/11/1

Y1 - 2015/11/1

N2 - Photovoltaic (PV) stations have been widely built in the world to utilize solar energy directly. In order to reduce the capital and operational costs, early fault diagnosis is playing an increasingly important role by enabling the long effective operation of PV arrays. This paper analyzes the terminal characteristics of faulty PV strings and arrays, and it develops a PV array fault diagnosis technique. The terminal current-voltage curve of a faulty PV array is divided into two sections, i.e., high-voltage and low-voltage fault diagnosis sections. The corresponding working points of healthy string modules and of healthy and faulty modules in an unhealthy string are then analyzed for each section. By probing into different working points, a faulty PV module can be located. The fault information is of critical importance for the maximum power point tracking and the array dynamical reconfiguration. Furthermore, the string current sensors can be eliminated, and the number of voltage sensors can be reduced by optimizing voltage sensor locations. Typical fault scenarios including monostring, multistring, and a partial shadow for a 1.6-kW 3 x 3 PV array are presented and experimentally tested to confirm the effectiveness of the proposed fault diagnosis method.

AB - Photovoltaic (PV) stations have been widely built in the world to utilize solar energy directly. In order to reduce the capital and operational costs, early fault diagnosis is playing an increasingly important role by enabling the long effective operation of PV arrays. This paper analyzes the terminal characteristics of faulty PV strings and arrays, and it develops a PV array fault diagnosis technique. The terminal current-voltage curve of a faulty PV array is divided into two sections, i.e., high-voltage and low-voltage fault diagnosis sections. The corresponding working points of healthy string modules and of healthy and faulty modules in an unhealthy string are then analyzed for each section. By probing into different working points, a faulty PV module can be located. The fault information is of critical importance for the maximum power point tracking and the array dynamical reconfiguration. Furthermore, the string current sensors can be eliminated, and the number of voltage sensors can be reduced by optimizing voltage sensor locations. Typical fault scenarios including monostring, multistring, and a partial shadow for a 1.6-kW 3 x 3 PV array are presented and experimentally tested to confirm the effectiveness of the proposed fault diagnosis method.

KW - fault diagnosis

KW - optimization

KW - photovoltaics

KW - terminal characteristics

KW - voltage sensors

UR - http://www.scopus.com/inward/record.url?scp=84944101603&partnerID=8YFLogxK

UR - http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=41

U2 - 10.1109/TIE.2015.2448066

DO - 10.1109/TIE.2015.2448066

M3 - Article

VL - 62

SP - 7237

EP - 7246

JO - IEEE Transactions on Industrial Electronics

T2 - IEEE Transactions on Industrial Electronics

JF - IEEE Transactions on Industrial Electronics

SN - 0278-0046

IS - 11

ER -