Hybrid Transmission Corridor study. Volume 1: Phase 1, Scale model development, Final report
- General Electric Co., Lenox, MA (United States)
Hybrid Transmission Corridors are areas where High Voltage Alternating Current (HVAC) transmission lines and High Voltage Direct Current (HVDC) transmission lines exist in close proximity of each other. Because of the acceptance of HVDC as a means of transporting electric power over long distances and the difficulties associated with obtaining new right-of-ways, HVDC lines may have to share the same transmission corridor with HVAC lines. The interactions between conductors energized with different types of voltages causes changes in the electrical stresses applied to the conductors and insulators. As a result, corona phenomena, field effects and insulation performance can be affected. This report presents the results of an investigation of the HVAC-HVDC interaction and its effect on corona and AC and DC electric field phenomena. The method of investigation was based on calculation methods developed at the EPRI High Voltage Transmission Research Center (HVTRC) and supported by the results of full and reduced-scale line tests. Also, a survey of existing hybrid corridors is given along with the results of measurements made at one of those corridors. A number of examples in which an existing AC corridor may be transformed into a hybrid corridor are discussed. The main result of the research is an analytical/empirical model for predicting the electrical/environmental performance of hybrid corridors, a definition of ACDC interaction and a set of criteria for specifying when the interaction becomes significant, and a set of design rules.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (United States); General Electric Co., Lenox, MA (United States)
- Sponsoring Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 10172521
- Report Number(s):
- EPRI-EL-7487-Vol.1; ON: UN92019900
- Resource Relation:
- Other Information: PBD: Jun 1992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
POWER SYSTEMS
RIGHTS-OF-WAY
POWER TRANSMISSION LINES
INTERACTIONS
HVAC SYSTEMS
HVDC SYSTEMS
CORONA DISCHARGES
ELECTRIC FIELDS
PHYSICAL RADIATION EFFECTS
ELECTRICITY
INTERFERENCE
ENVIRONMENTAL IMPACTS
240300
240500
240200
POWER TRANSMISSION LINES AND CABLES
ENVIRONMENTAL ASPECTS
POWER SYSTEM NETWORKS
TRANSMISSION AND DISTRIBUTION