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Real-time fault detection system for large scale grid integrated solar photovoltaic power plants

Title
Real-time fault detection system for large scale grid integrated solar photovoltaic power plants
Author
이방욱
Keywords
Solar photovoltaic; Large-scale solar power plants; Fault detection and identification
Issue Date
2021-02
Publisher
ELSEVIER SCI LTD
Citation
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS, v. 130, Article no. 106902, 13pp
Abstract
A new fault detection system is proposed in this study for large-scale grid-tied PV power plants. The fault detection system performs string level comparison of DC power of Actual PV Plant and a simulated PV plant, referred as Theoretical PV Plant. The comparison is performed with a statistical tool which distinguishes a faulty condition and identifies the nature of the fault. This statistical tool is used as outlier detector based on the William Gosset's (Student's) T-Test. The Theoretical PV Plant generates power in a simulation tool using inputs of irradiance and PV module temperature, both obtained from sensors at the Actual PV Plant. The string power of Actual PV Plant is also obtained in the simulation from the data logger in real-time environment. These string powers of Actual and Theoretical PV Plants are compared to find a faulty condition. A GUI is developed where the fault alarms appear on Real-time Status Monitor whenever a fault occurs in the Actual PV Plant. The proposed fault detection system has been validated on a 125 kWp grid-connected PV plant.
URI
https://www.sciencedirect.com/science/article/pii/S0142061521001423https://repository.hanyang.ac.kr/handle/20.500.11754/166988
ISSN
0142-0615
DOI
10.1016/j.ijepes.2021.106902
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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