Lightning overvoltage protection of the paddock 362-145 kV Gas-Insulated Substation

Journal Article · Mon Jan 01 04:00:00 EST 1990 · IEEE (Institute of Electrical and Electronics Engineers) Transactions on Power Delivery; (USA)

DOI:https://doi.org/10.1109/61.107267· OSTI ID:5128908

Elahi, H; Sublich, M ^[1]; Anderson, M E; Nelson, B D ^[2]

---

1. GE Industry and Utility Sales, Schenectady, NY (US)
2. Wisconsin Power and Light Co., Madison, WI (USA)

Backflashovers close to the Paddiock 362-145 kV Gas-Insulated Substation (GIS) have been analyzed with the Electro-Magnetic Transient Program (EMTP) using a frequency dependent multi-conductor system. The severity of the lightning stroke currents were derived based on recent recordings in the eastern United States. Impacts of corona attenuation and distortion were accounted for using a shunt linear model approach. Turn-up effects of both line insulator flashover voltages and surge arrester protective characteristics were represented based on manufacturer's volt-time curves. Wave shaping effects of substation capacitances (ie., PT's transformers, CCPD's) were also modeled. Results show the importance of various modeling details in determining the overvoltages inside the GIS due to close backflashovers, which are caused by lightning strokes with varying intensity. These results are aimed at better evaluation of lightning protection requirements for GIS protected by metal-oxide surge arresters.

• OSTI ID: 5128908
• 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
CHALCOGENIDES
CIRCUIT BREAKERS
CONTROL SYSTEMS
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELECTRICAL TRANSIENTS
ELECTROMAGNETIC FIELDS
ENVIRONMENTAL IMPACTS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
GAS-INSULATED SUBSTATIONS
LIGHTNING
NORTH AMERICA
OVERVOLTAGE
OXIDES
OXYGEN COMPOUNDS
POWER SUBSTATIONS
SELF-SHIELDING
SHIELDING
TRANSIENTS
USA
VAR CONTROL SYSTEMS
VOLTAGE DROP