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The Test and Installation of Medium Class(22.9kV) Hybrid type Fault Current Limiter in KEPCO Grid

The Test and Installation of Medium Class(22.9kV) Hybrid type Fault Current Limiter in KEPCO Grid. Wonjoon Choe Jungwook Sim Gyeong -ho Lee Seung-hyun Bang Kwon- Bae Park Young- keun Kim Ok- Bae Hyun. LS Industrial Systems. Korea. KEPCO/KEPRI. Korea.

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The Test and Installation of Medium Class(22.9kV) Hybrid type Fault Current Limiter in KEPCO Grid

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  1. The Test and Installation of Medium Class(22.9kV) Hybrid type Fault Current Limiter in KEPCO Grid WonjoonChoe JungwookSim Gyeong-ho Lee Seung-hyun Bang Kwon-Bae Park Young-keun Kim Ok-Bae Hyun LS Industrial Systems. Korea KEPCO/KEPRI. Korea

  2. Real Grid Project of FCL and SC Cable • Application Site : ICHEON 154kV Substation, KEPCO • Installation Location: D/L of M.Tr(154kV/22.9kV) secondary SEOUL ICHEON • HTS hybrid FCL • Cooling System for HTS Cable • Control and Monitoring System Termination of HTS Cable Main Transformer Offset Intermediate connection of HTS Cable 170kV GIS 25.8kV GIS

  3. Configurations of FCL & SC Cable

  4. Circuit of Hybrid-type FCL Switch Mech. Actuator Reactor HTS VI HTS Backup Switch Actuator

  5. Configurations Cryocooling System Cryocooling Monitoring & Control System Switch Current Limiting Reactor

  6. Specification

  7. Fabrication of HTS trigger module Winding Critical Current HTS wire(CC) Stacking Assembly

  8. Test of FCL •Test voltage(rms): 22.9/13.2kV •Test current(rms): 12.5kA •Fault duration time: -3 phase: 1.0 sec

  9. Limiting types of fault current limiters Type1 Type2 Non-limited region

  10. Protective Coordination in DL 154/22.9kV FCL M.Tr 22.9kV OCR1 OCR2 154kV 1

  11. Future Plan • • Commercial operation of 25.8kV/630A HTS hybrid FCL 2011.6~ (Planned) • • Development of Fault Current Limiter for Biz. Model ~2011.12(Planned) • Biz. Model 1: 25.8kV/600A FCL • - Application site: KEPCO DL (Underground grid) • Biz. Model 2: 22kV/5,000A FCL • - Application site : POSCO (Steel plant in Korea)

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