LOW VOLTAGE APPARATUS ›› 2020, Vol. 0 ›› Issue (12): 67-73.doi: 10.16628/j.cnki.2095-8188.2020.12.012

• Detection & Experiment • Previous Articles     Next Articles

Research on Resistance Characteristics Test and Modeling Method of Resistance Superconducting Fault Current Limiter

LI Qingbo   

  1. Shantou Power Supply Bureau of Guangdong Power Grid Co.,Ltd.,Shantou 515041,China
  • Received:2020-10-09 Online:2020-12-30 Published:2021-01-05

Abstract:

The current limiting ability of a resistance superconducting current limiter depends on its resistance characteristics,so it is necessary to accurately grasp the resistance change characteristics of a resistance superconducting current limiter and its operating characteristics in the system.In this paper,a current impulse test is first carried out for the resistance superconducting current limiter for multi-terminal flexible DC transmission project to obtain its resistance-heating accumulation curve.Secondly,this paper proposes a fitting method based on the double exponential function to fit the mathematical expressions of the resistance value and the heat accumulation value.Furthermore,a simulation model of the resistance superconducting fault current limiter based on the mathematical expressions of resistance value and heat generation software is established in PSCAD/EMTCD.Finally,the short-circuit fault simulation analysis of the multi-terminal flexible DC transmission system was carried out.The simulation verifies the correctness of the resistance superconducting current limiter model and the effectiveness of its current limit,and reaches the expected current limit level.

Key words: resistance superconducting fault current limiter, resistance characteristics, VSC-MTDC, current limiting level

CLC Number: