Abstract
In the line distance protection setting, the thyristor-controlled series capacitor type fault current limiter (TCSC-FCL) is usually treated as a reactor, ignoring the dynamic impedance characteristics, which may lead to operation failure/maloperation or slow response. To solving the problem above, TCSC-FCL dynamic impedance analysis model was established. Accounting for the bypass mode of TCSC-FCL in the first cycle, the time-varying characteristics of TCSC-FCL during the process from series compensation mode to limit dynamic mode was analyzed. Then the paper proposed the function expression of dynamic impedance characteristics of TCSC-FCL, and put forward distance protection setting strategy based on dynamic offset impedance circle, in order to eliminate the influence of TCSC-FCL dynamic impedance characteristics to the distance protection action. By establishing typical grid model including TCSC-FCL, the correctness of dynamic feature's function expression and the distance protection setting strategy are proved.
| Original language | English |
|---|---|
| Pages (from-to) | 2279-2289 |
| Number of pages | 11 |
| Journal | Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering |
| Volume | 37 |
| Issue number | 8 |
| DOIs | |
| State | Published - 20 Apr 2017 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2017 Chin. Soc. for Elec. Eng.
Keywords
- Distance protection
- Dynamic impedance process
- Dynamic offset
- Impedance circle
- TCSC-FCL
ASJC Scopus subject areas
- Electrical and Electronic Engineering