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STUDY ON OVERVOLTAGE OF YANGCHENG-JIANGSU POWER TRANSMISSION SYSTEM

Han Yan-hua

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Abstract

The computation of power frequency overvoltage,secondary arc current,3 phase closing overvoltage and single phase reclosing overvoltage in Yangcheng Jiangsu 500 kV power transmission system by EMTP is presented in this paper.The results show that the power frequency overvoltage is within the extent of design criteria,secondary arc current smaller than 10 A enables single phase reclosing to be successful,both colsing resistors and MOA can be used in the line protection to limit the closing overvoltage effectively.

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What this paper is about

The computation of power frequency overvoltage,secondary arc current,3 phase closing overvoltage and single phase reclosing overvoltage in Yangcheng Jiangsu 500 kV power transmission system by EMTP is presented in this paper.The results show that the power frequency overvoltage is within the extent of design criteria,secondary arc current smaller than 10 A enables single phase reclosing to be successful,both colsing resistors and MOA can be used in the line protection to limit the closing overvoltage effectively.

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Available abstract

The computation of power frequency overvoltage,secondary arc current,3 phase closing overvoltage and single phase reclosing overvoltage in Yangcheng Jiangsu 500 kV power transmission system by EMTP is presented in this paper.The results show that the power frequency overvoltage is within the extent of design criteria,secondary arc current smaller than 10 A enables single phase reclosing to be successful,both colsing resistors and MOA can be used in the line protection to limit the closing overvoltage effectively.

Key concepts: Overvoltage, Emtp, Electrical engineering, Resistor, Engineering, Arc (geometry), Electric power system, Power (physics)

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