A NOVEL METHOD OF MODELING EARTH IN GROUND FAULT STUDIES OF DISTRIBUTION NETWORKS
Publish place: The 10th CIRED Regional Conference
Publish Year: 1401
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
CIRED10_068
تاریخ نمایه سازی: 9 اسفند 1401
Abstract:
Electrical network ground resistance in the traditional method is considered and simulated only with an equivalent resistance placed in the fault point. In this paper, a new model for the contribution of earth in a line-to-ground fault in distribution networks with OHL (overhead line) or cable is proposed, which is based on the fundamentals of current field distribution in the earth, The model can be applied to simulate line to ground faults, as well as step voltages near to the faulted point on earth and finding proper setting of E/F relays to provide safety for human/animal lives. This line-to-ground fault model relates the step voltage to the fault current dispersed in earth in isolated/high impedance grounded networks and can be used as a tool for reducing the step voltage and providing a proper safety.
Authors
Kasra Farzaneh
Center of Excellence for Power System Automation and Operation (CEPSAO), Iran University of Science and Technology (IUST), Tehran, Iran
Seyed Mohammad Shahrtash
Center of Excellence for Power System Automation and Operation (CEPSAO), Iran University of Science and Technology (IUST), Tehran, Iran