Detection of Line-to-Ground and Line-to-Line Faults Based on Fault Voltage Analysis in PV System
- Resource Type
- Conference
- Authors
- Miao, Wenchao; Luo, Yanfang; Liu, Yuchen; Wang, Fei; Zhi, Fengyun; Zhou, Xinyue
- Source
- 2022 7th International Conference on Power and Renewable Energy (ICPRE) Power and Renewable Energy (ICPRE), 2022 7th International Conference on. :424-429 Sep, 2022
- Subject
- Power, Energy and Industry Applications
Radio frequency
Photovoltaic systems
Maximum power point trackers
Renewable energy sources
Fault detection
Simulation
Voltage
fault voltage analysis
LG fault detection
LL fault detection
PV system
- Language
- ISSN
- 2768-0525
Line-to-ground (LG) faults and line-to-line (LL) faults reduce the operating efficiency of photovoltaic (PV) systems and even lead to severe accidents such as fire hazards. Since the maximum power point tracking controller can reduce the fault current, the conventional protection devices such as overcurrent protection device and grounding protection device can not be triggered. Therefore, in this paper, a voltage-sensing-based technique is proposed to accurately detect and locate LG faults and LL faults by analyzing the fault voltage. The voltage characteristics under various fault conditions are analyzed to develop the LG and LL fault detection and location algorithm. The simulation results verify that the proposed technique can detect and locate the LG and LL faults effectively.