Analysis of algorithms for ultra high speed relays for the protection of high voltage transmission lines
Thesis/Dissertation
·
OSTI ID:5802146
The object of this research is the evaluation of the performance of ultra high speed relays (UHSR's) used for protection of a-c transmission lines. For purposes of this report, these are relays whose response time is less than a quarter of a cycle of the 60 Hz wave (i.e. 4.167 ms.). To identify relaying schemes that may comply with this definition, a literature survey was undertaken. The selected relays were studied in detail and modeled on a digital computer. A theoretical description of these relays is presented. Records of real transient data as well as of simulated data were used as input to the digital models of relays. The real data were recorded by means of monitoring stations connected to the Florida Power and Light Company transmission lines. The simulated data were obtained by modeling the relevant parts of the utility's transmission system using a University of British Columbia simplified version of the well known Electromagnetic Transients Program of the Bonneville Power Administration. From the very limited data base available, it was concluded that no algorithm examined could correctly and consistently locate faults within 4 ms, though several gave good directional indications.
- OSTI ID:
- 5802146
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
200300* -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
42 ENGINEERING
420800 -- Engineering-- Electronic Circuits & Devices-- (-1989)
ALGORITHMS
COMPUTERIZED SIMULATION
ELECTRICAL EQUIPMENT
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
MATHEMATICAL LOGIC
POWER TRANSMISSION LINES
RELAYS
SIMULATION
24 POWER TRANSMISSION AND DISTRIBUTION
42 ENGINEERING
420800 -- Engineering-- Electronic Circuits & Devices-- (-1989)
ALGORITHMS
COMPUTERIZED SIMULATION
ELECTRICAL EQUIPMENT
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
MATHEMATICAL LOGIC
POWER TRANSMISSION LINES
RELAYS
SIMULATION