Precise fault location algorithm for double-circuit transmission lines using unsynchronised measurements from two anti-parallel ends

Korres, GN; Apostolopoulos, CA

dc.contributor.author	Korres, GN	en
dc.contributor.author	Apostolopoulos, CA	en
dc.date.accessioned	2014-03-01T01:34:20Z
dc.date.available	2014-03-01T01:34:20Z
dc.date.issued	2010	en
dc.identifier.issn	1751-8687	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20701
dc.subject	Fault Location	en
dc.subject	Transmission Line	en
dc.subject	Anti Parallel	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.other	ATP-EMTP	en
dc.subject.other	Current phasors	en
dc.subject.other	Distributed parameter line model	en
dc.subject.other	Double-circuit transmission lines	en
dc.subject.other	Fault data	en
dc.subject.other	Fault distance	en
dc.subject.other	Fault location	en
dc.subject.other	Fault location algorithms	en
dc.subject.other	Fault point	en
dc.subject.other	Fault resistances	en
dc.subject.other	Fault types	en
dc.subject.other	Long line	en
dc.subject.other	Modal transformation	en
dc.subject.other	Mutual coupling	en
dc.subject.other	Precise faults	en
dc.subject.other	Shunt capacitance	en
dc.subject.other	Simulation result	en
dc.subject.other	Source impedance	en
dc.subject.other	Synchronisation	en
dc.subject.other	Zero sequence voltage	en
dc.subject.other	Electric lines	en
dc.subject.other	Electric surges	en
dc.subject.other	Linear transformations	en
dc.subject.other	Location	en
dc.subject.other	Transmission line theory	en
dc.subject.other	UHV power transmission	en
dc.subject.other	Algorithms	en
dc.title	Precise fault location algorithm for double-circuit transmission lines using unsynchronised measurements from two anti-parallel ends	en
heal.type	journalArticle	en
heal.identifier.primary	10.1049/iet-gtd.2009.0533	en
heal.identifier.secondary	http://dx.doi.org/10.1049/iet-gtd.2009.0533	en
heal.identifier.secondary	IGTDAW000004000007000824000001	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	A new fault location algorithm for double-circuit transmission lines with availability of complete measurements from two anti-parallel end of the line is presented. Sequence voltage and current phasors from these ends are taken as inputs and no synchronisation between them is needed. Using the pre-fault data, the synchronisation angles between measurements at the reference and the anti-parallel ends are obtained. Using the fault data, the faulted circuit is determined and the sequence voltages and currents at the fault point are calculated as a function of the fault distance. Finally, using the fault boundary conditions that exist for a given fault type, the fault location is derived and solved by an iterative method. Owing to zero-sequence mutual coupling, it is not straightforward to express the zero-sequence voltage and current at the fault point as a function of the zero-sequence voltages and currents at the two measuring ends and the distance to fault. To overcome this problem, a modal transformation matrix is introduced to obtain the modal networks, which are decoupled and can be analysed independently. Based on distributed parameter line model, the proposed algorithm fully considers the effects of shunt capacitances and thus achieves superior locating accuracy, especially for long lines. Mutual coupling between circuits, source impedances and fault resistance do not influence the locating accuracy of the algorithm. The simulation results using ATP-EMTP and MATLAB demonstrate the effectiveness and accuracy of the proposed algorithm. © 2010 The Institution of Engineering and Technology.	en
heal.publisher	INST ENGINEERING TECHNOLOGY-IET	en
heal.journalName	IET Generation, Transmission and Distribution	en
dc.identifier.doi	10.1049/iet-gtd.2009.0533	en
dc.identifier.isi	ISI:000279104000007	en
dc.identifier.volume	4	en
dc.identifier.issue	7	en
dc.identifier.spage	824	en
dc.identifier.epage	835	en