Criteria for phase-to-phase clearances of HV substations

Journal Article · Sun Dec 31 23:00:00 EST 1989 · IEEE (Institute of Electrical and Electronics Engineers) Transactions on Power Delivery; (USA)

DOI:https://doi.org/10.1109/61.107266· OSTI ID:5100976

Panek, J; Sublich, M; Elahi, H ^[1]

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1. GE Industry and Utility Sales, Schenectady, NY (US)

To facilitate uprating of HV substations, the paper re-examines line-to-line insulation design criteria. The basis for existing practices and the principles of line-to-line lightning surge overvoltage stresses are reviewed. Results of a digital study for a realistic substation are presented. The conclusions show that the line-to-line stresses, as limited by surge arresters, are substantially higher than line-to-ground stresses. This represents increased requirements as compared to existing standards. However, due to low protective levels of modern arresters, substantial reduction of line-to-line clearances is still feasible.

• OSTI ID: 5100976
• Journal Information: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Power Delivery; (USA), Journal Name: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Power Delivery; (USA) Vol. 5:1; ISSN 0885-8977; ISSN ITPDE
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240201* -- Power System Networks
Transmission & Distribution-- AC Systems-- (1990-)
29 ENERGY PLANNING, POLICY, AND ECONOMY
296000 -- Energy Planning & Policy-- Electric Power
CIRCUIT BREAKERS
DESIGN
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATION
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
LIGHTNING
LOAD MANAGEMENT
MANAGEMENT
OVERVOLTAGE
POWER TRANSMISSION LINES
SOILS
STRESSES