Survey of Magnetic Fields Near BPA 230-kV and 500-kV Transmission Lines.
The purpose of this study was to characterize typical levels and variability of 60Hz magnetic fields at the centerline and edge of right-of-way of Bonneville Power Administration (BPA) 230-kV and 500-kV transmission lines. This was accomplished by taking magnetic field measurements at over 800 spans in Oregon and Washington. The spans were sampled using a stratified random sampling procedure with region (East vs. West), voltage (230-kV vs 500-kV), and circuit configuration as strata. There were five different circuit configuration groups for each region/voltage category requiring a total of 200 strata. Magnetic field measurements were taken at 13 locations under each span using an EMDEX-C as a survey meter. Additional information recorded for each span included conductor height (at 10 locations), right-of-way width, longitudinal and lateral slope, time of day, vegetation, terrain, weather conditions, temperature, wind speed, span length and presence of other lines in the corridor. 9 refs., 17 figs., 26 tabs.
- Research Organization:
- Portland State Univ., OR (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- BI79-89BP01305
- OSTI ID:
- 5176274
- Report Number(s):
- DOE/BP-01305-T1; ON: DE92001614
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
POWER TRANSMISSION LINES
ELECTRIC FIELDS
MAGNETIC FIELDS
DATA ACQUISITION
DATA ANALYSIS
HEALTH HAZARDS
HVDC SYSTEMS
MEASURING METHODS
MONITORING
PROGRESS REPORT
RIGHTS-OF-WAY
SAFETY
SAMPLING
DC SYSTEMS
DOCUMENT TYPES
ENERGY SYSTEMS
HAZARDS
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Magnetic fields - Measurement
Electric lines - Environmental aspects
240400* - Power Transmission & Distribution- Health & Safety- (1990-)
240500 - Power Transmission & Distribution- Environmental Aspects- (1990-)