Authors:
Andrey Kryukov
1
;
2
;
Konstantin Suslov
2
;
3
and
Alexandr Kryukov
2
Affiliations:
1
Department of Transport Electric Power, Irkutsk State Transport University, Irkutsk, Russia
;
2
Department of Power Supply and Electrical Engineering, Irkutsk National Research Technical University, Irkutsk, Russia
;
3
Department of Hydropower and Renewable Energy, National Research University, “Moscow Power Engineering Institute”, Moscow, Russia
Keyword(s):
Long-Distance Ultrahigh-Voltage Transmission Lines, Comprehensive Modeling in the Phase Frame of Reference.
Abstract:
The goal of the research presented in this article was to develop computer models of long-distance ultra-high voltage (UHV) power transmission lines to provide comprehensive modeling of power flows and calculating electromagnetic interference effects on extended steel structures. In developing the models, we employed the methods based on the use of the phase frame of reference and equivalent lattice circuits with a fully connected topology. The simulations were carried out for a 1,150 kV UHV transmission line with a length of 900 km, each phase of which was formed by eight AC-330 wires . Simulations were performed using the software package Fazonord. Along with power flow calculations and determination of the voltages created by the 1,150 kV long-distance transmission line on the pipeline, we simulated electromagnetic fields, taking into account the impact exerted by the grounded steel structure. The results of modeling a long-distance 1,150 kV transmission line with receiving end lo
ads of 300 + j 200 MVA per phase led to the following conclusions: in the case of a normal power flow with balanced loads at individual points of the structure the levels of induced voltages did not exceed the allowable limit of 60 V; in the case of two-phase and single-phase short-circuit power flows the maximum induced voltages also did not exceed the 1,000 V limit set by the regulatory document. The models presented in the paper can be put into practice when planning the measures to ensure the electrical safety of technicians working at the pipeline sections located in the areas that are subject to electromagnetic interference effects of transmission lines. The application scope of the technique developed covers the cases where a transmission line and a pipeline run in close proximity following a complex trajectory that includes parallel and oblique segments.
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