基于电流分析的高压直流输电MRTB并联振荡装置故障诊断方法

作者：Yuan Huqiang; Cheng Jiandeng; Liu Wenze; Zeng Jincan; Deng Yan

来源：High Voltage Apparatus, 2018, 54(4): 81-86.

DOI：10.13296/j.1001-1609.hva.2018.04.012

• HVDC
• Kirchhoff's current law
• MRTB
• Parallel oscillating device

In order to confirm that the parallel oscillating device in metallic return transfer breaker(MRTB) is normal or not, when the connecting mode of UHVDC system is changing from metallic return to earth return, this paper proposed an online MRTB parallel oscillating device diagnosis method based on current analysis. First, this paper designs a way to calculate the current of MRTB parallel oscillating device by delineating the closed surfaces and applying the KCL law equation in those closed surfaces. Then, according to the characteristic of the calculated current of MRTB parallel oscillating device, it can be diagnosed that the default status of the parallel oscillating device. The correctness and effectiveness of this method proposed in this paper have been proved through the success and failure conversion cases of ±800 kV Chu-Sui UHVDC pole Ⅱ system. ? 2018, Xi'an High Voltage Apparatus Research Institute Co., Ltd. All right reserved.

• 单位
  华南理工大学