Power-frequency electric field optimization method for series reactor region of 500kV transformer substation

Abstract

The invention provides a power-frequency electric field optimization method for a series reactor region of a 500kV transformer substation, and the method comprises the steps: determining the related information of the series reactor region of the 500kV transformer substation, and constructing a calculation model according to the related information; employing a boundary element method to carry out the simulation solving of the calculation model for each phase sequence array in the range of a preset double-circuit bus phase sequence array, obtaining the power-frequency electric field intensities which are respectively corresponding to each phase sequence array, and screening out the power-frequency electric field intensities meeting a certain condition, and the corresponding phase sequence arrays; obtaining the current phase sequence array of a double-circuit bus of the series reactor region of the 500kV transformer substation, and modifying the current phase sequence array into the screened phase sequence array. According to the invention, the method analyzes and adjusts the phase sequence array of the double-circuit bus of the series reactor region, reduces the power-frequency electric field intensity of the series reactor region, and achieves a purpose of optimizing an electromagnetic environment.

Description

technical field [0001] The invention relates to the technical field of electromagnetic environment detection of transmission lines, in particular to a method for optimizing a power frequency electric field in a series reactance area of ​​a 500kV substation. Background technique [0002] With the rapid development of the national economy, the demand for power is becoming more and more urgent. However, the energy distribution is not reasonable at this stage, and the load centers with large demands are generally far away from the energy base. In order to quickly realize the optimal allocation of resources, high-voltage transmission lines are usually laid between the energy base and the load center, which is conducive to the improvement of economic and environmental benefits, but the high voltage and high current characteristics of high-voltage transmission lines have brought a series of electromagnetic Environmental issues. [0003] Scholars and research institutions at home a...

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Problems solved by technology

[0004] However, the inventors found that domestic and foreign research mainly focused on the influence of the line structure and operation conditions in the series reactance area on the power frequency electromagnetic field under the transmission line, and there were few studies on the influence of the phase sequence.

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