A TRAVELLING WAVES-BASED FAULT LOCATION SCHEME FOR MULTI-TAPPED OVERHEAD DISTRIBUTION SYSTEMS
Mahmoud Abd EL Fattah Mahmoud;
Abstract
Key Words: Characteristic Frequency, Distribution Network, Fast Fourier Transform (FFT), Fault Location, Clarke transformation, Travelling Waves.
Summary:
In this thesis, a digital protection technique is implemented for MV overhead distribution network using voltage signals only at MV substation. The proposed scheme utilize an automation system which depends on installing fault passage indicators at strategic points to identify the faulted section. The exact fault distance is determined through two phases. The first one is representing the network by a set of equations. Each equation belongs to specific path and fault type; as a relation between the distance between substation and fault point and the generated frequency observed at the substation. The other phase is the substituting by theobtained frequency in the appropriate equation.
The proposed scheme is extensively examined on a typical 22 kV distribution network. Different faults are simulated at different positions on main feeder and laterals to evaluate the accuracy of the proposed algorithm not only for various fault resistance, inception angle, and load level but also in case of changing in network topology. The final results demonstrate accurate fault location estimation for distribution systems.
Summary:
In this thesis, a digital protection technique is implemented for MV overhead distribution network using voltage signals only at MV substation. The proposed scheme utilize an automation system which depends on installing fault passage indicators at strategic points to identify the faulted section. The exact fault distance is determined through two phases. The first one is representing the network by a set of equations. Each equation belongs to specific path and fault type; as a relation between the distance between substation and fault point and the generated frequency observed at the substation. The other phase is the substituting by theobtained frequency in the appropriate equation.
The proposed scheme is extensively examined on a typical 22 kV distribution network. Different faults are simulated at different positions on main feeder and laterals to evaluate the accuracy of the proposed algorithm not only for various fault resistance, inception angle, and load level but also in case of changing in network topology. The final results demonstrate accurate fault location estimation for distribution systems.
Other data
| Title | A TRAVELLING WAVES-BASED FAULT LOCATION SCHEME FOR MULTI-TAPPED OVERHEAD DISTRIBUTION SYSTEMS | Other Titles | "استخدام الموجات العابرة لتحديد أماكن الأعطال في شبكات التوزيـع الهوائية متعددة التفريعات" | Authors | Mahmoud Abd EL Fattah Mahmoud | Issue Date | 2017 |
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