Ground-Fault Characteristic Analysis of Grid-Connected Photovoltaic Stations with Neutral Grounding Resistance

Zheng Li, Jiping Lu, Ya Zhu and Wang Jiang
Additional contact information
Zheng Li: State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering of Chongqing University, Shapingba District, Chongqing 400044, China
Jiping Lu: State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering of Chongqing University, Shapingba District, Chongqing 400044, China
Ya Zhu: Maintenance Branch of Chongqing Electric Power Company of (State Grid), No. 12 Zhongshan Road, Yuzhong District, Chongqing 400015, China
Wang Jiang: Electric Power Research Institute of Chongqing Electric Power Company of (State Grid), Chongqing 401120, China

Energies, 2017, vol. 10, issue 11, 1-18

Abstract: A centralized grid-connected photovoltaic (PV) station is a widely adopted method of neutral grounding using resistance, which can potentially make pre-existing protection systems invalid and threaten the safety of power grids. Therefore, studying the fault characteristics of grid-connected PV systems and their impact on power-grid protection is of great importance. Based on an analysis of the grid structure of a grid-connected PV system and of the low-voltage ride-through control characteristics of a photovoltaic power supply, this paper proposes a short-circuit calculation model and a fault-calculation method for this kind of system. With respect to the change of system parameters, particularly the resistance connected to the neutral point, and the possible impact on protective actions, this paper achieves the general rule of short-circuit current characteristics through a simulation, which provides a reference for devising protection configurations.

Keywords: neutral grounding resistance; grid-connected PV station; fault model; fault characteristic (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/10/11/1910/pdf (application/pdf)
https://www.mdpi.com/1996-1073/10/11/1910/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:10:y:2017:i:11:p:1910-:d:119653

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().