A Fault Location Technique for Transmission Lines Using Phasor Measurements
Abdolhamid Rahideh1, Mohsen Gitizadeh2, Sirus Mohammadi3
1Abdolhamid Rahideh, Department of Electrical Egineering, College of Graduate Studies, Science and Research Branch Kohgiluyeh and Boyerahmad, Islamic Azad University, Yasouj, Iran.
2Mohsen Gitizadeh, Department of Electrical and Electronic Engineering, Shiraz University of Technology, Shiraz, Iran.
3Sirus Mohammadi, Department of Electrical Engineering, Islamic Azad University Gachsaran, Iran.
Manuscript received on September 21, 2013. | Revised Manuscript received on October 01, 2013. | Manuscript published on October 30, 2013. | PP: 241-248 | Volume-3, Issue-1, October 2013. | Retrieval Number: A2227103113/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This paper presents a fault location technique for two-terminal multi section compound transmission lines, which combine overhead lines with underground power cables, using synchronized phasor measurements acquired by global positioning system (GPS) based phasor measurement units (PMUs) or digital relays with embedded PMU or by fault-on relay data synchronization algorithms. The technique is extended from a two-terminal fault location method with synchronized phasormea surements as inputs. A novel fault section selector is proposedto select the fault line section in advance. The proposed technique has the ability to locate a fault no matter where the fault is on overhead line or underground power cable. The adopted technique has a solid theoretical foundation and is direct and simple in terms of computational complexity. Both extensive simulation results and field test results are presented to demonstrate the effectiveness of the proposed scheme. The proposed technique has already been implemented in the Taiwan power system since the year 2008. Up to the present, the proposed technique yields excellent performance in practice.
Keywords: Fault location, Phasor measurement units (PMUs), Two-terminal compound transmission lines.