Abstract
Many factors of the power system are related to the line phase sequence and multi-circuit transmission lines arrangement is various, so it is very difficult to select the optimal phase sequence. This paper takes the quadruple-circuit transmission lines as an example, using MATLAB to simulate the power frequency electric field, power frequency magnetic field, radio interference, audible noise and line imbalance under 1296 kinds of phase sequences of quadruple-circuit lines, through establishing the objective function about line electromagnetic environment and imbalance, setting different weight coefficients depending on their importance in the practical project, finally obtaining the optimal phase sequence of quadruple-circuit lines based on comprehensive consideration of electromagnetic environment and imbalance.
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