High-resistance faults on a multi-terminal line: Analysis, simulated studies and an adaptive distance relaying scheme

Journal Article · Sat Jan 01 04:00:00 EST 1994 · IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/61.277721· OSTI ID:7046376

Xia, Y Q ^[1]; David, A K; Li, K K ^[2]

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1. Tianjin Univ. (China)
2. Hong Kong Polytechnic, Kowloon (Hong Kong)

The presence of a T-connection to a third terminal can drastically affect the performance of a distance relay at the other terminals. Fault resistance, especially high fault resistance, makes this problem more severe and complicated. Detailed analysis of the apparent impedance for these cases as seen from the relaying point is derived and, based on extensive simulations of the infeed/outfeed and fault-resistance effects on the relay characteristics, an adaptive distance relaying scheme is proposed. A microprocessor based distance relay using this new technique can quickly respond to very-high-resistance faults with maximum coverage of the protected line. The validity of this new scheme has been confirmed by real-time testing on a prototype hardware scheme.

• OSTI ID: 7046376
• Journal Information: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States) Vol. 9:1; ISSN 0885-8977; ISSN ITPDE5
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240100* -- Power Systems-- (1990-)
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL FAULTS
ELECTRICAL PROPERTIES
ENERGY SYSTEMS
EQUIPMENT
INTERCONNECTED POWER SYSTEMS
ON-LINE CONTROL SYSTEMS
ON-LINE SYSTEMS
PHYSICAL PROPERTIES
POWER SYSTEMS
POWER TRANSMISSION LINES
RELAYS