Overvoltages in underground systems, phase 2 results. Final report
- Univ. of Florida, Gainesville, FL (United States). Dept. of Electrical and Computer Engineering
In 1993, a research facility was constructed by Power Technologies, Inc. (PTI) under the funding and direction of the Electric Power Research Institute (EPRI) at the Camp Blanding Florida Army National Guard Base, located approximately midway between Gainesville and Jacksonville, Florida, for the specific purpose of studying lightning`s interaction with power distribution systems. This report is primarily based on Camp Blanding experiments conducted by the University of Florida (UF) from 1994 to 1998 and experiments conducted by PTI in 1993. The responses (currents and voltages) of the test system are presented for ten cases representing the following lightning strike points and test-system configurations: two triggered strikes and one natural strike to the phase conductor of the overhead line while the underground distribution system was connected to the line; two triggered strikes to ground tens of meters from the underground cable (one at 20 meters from the line and one at 125 m from the line) and one natural strike to ground tens of meters from the cable (and from the line) while the underground system was connected to the line; two triggered strikes to the line (one to the phase conductor and one to the neutral conductor) with no connection to the underground system 80 meters away; one triggered strike to ground 20 m from the line (without MOV arresters), with no connection to the underground system 60 m away; one strike to ground surface between two cables buried about 5 m apart and at a depth of about 1 m. EMTP modeling is used to simulate lightning interaction with power distribution system. Conditions at the lightning channel termination on ground are analyzed.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (United States); Univ. of Florida, Dept. of Electrical and Computer Engineering, Gainesville, FL (United States)
- Sponsoring Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 362651
- Report Number(s):
- EPRI-TR--109669-R1
- Country of Publication:
- United States
- Language:
- English
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