Frankfurt (Germany), 6-9 June 2011 The Test and Installation of Medium Class(22.9kV) Hybrid type Fault Current Limiter in KEPCO Grid Wonjoon Choe Jungwook.

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Presentation transcript:

Frankfurt (Germany), 6-9 June 2011 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

Frankfurt (Germany), 6-9 June 2011 SEOUL ICHEON HTS hybrid FCL Cooling System for HTS Cable Control and Monitoring System Intermediate connection of HTS Cable Offset Termination of HTS Cable 170kV GIS Main Transformer 25.8kV GIS Application Site : ICHEON 154kV Substation, KEPCO Installation Location: D/L of M.Tr(154kV/22.9kV) secondary Real Grid Project of FCL and SC Cable

Frankfurt (Germany), 6-9 June 2011 Configurations of FCL & SC Cable

Frankfurt (Germany), 6-9 June 2011 Circuit of Hybrid-type FCL HTS Switch Mech. Reactor VI Actuator HTS Backup Switch

Frankfurt (Germany), 6-9 June 2011 Configurations Cryocooling System Switch Current Limiting Reactor Cryocooling Monitoring & Control System

Frankfurt (Germany), 6-9 June 2011 Specification ParameterSpecification Rated Voltage (rms) 25.8 kV Rated Current (rms) 630 A Rated Power Frequency 60 Hz Rated Power Frequency withstand voltage (rms) 70 kV Rated Impulse withstand voltage 150 kV. BIL Rated short circuit current (rms) 12.5 kA/1.0 sec Insulation type Air Minimum Limiting Current (rms) 1.4 kA Current Limiting Reactor 0.4 [Ω] Recovery time < 0.5 sec Critical Current of HTS > 2,000 A Cooling Power 220W at 80K Operation temperature 75~77K

Frankfurt (Germany), 6-9 June 2011 HTS wire(CC) Winding Stacking Critical Current Assembly Fabrication of HTS trigger module

Frankfurt (Germany), 6-9 June 2011 Test of FCL Test voltage(rms): 22.9/13.2kV Test current(rms): 12.5kA Fault duration time: -3 phase: 1.0 sec

Frankfurt (Germany), 6-9 June 2011 Type1 Type2 Non-limited region Limiting types of fault current limiters

Frankfurt (Germany), 6-9 June 2011 Protective Coordination in DL OCR2OCR kV 22.9kV 154/22.9kV M.Tr FCL

Frankfurt (Germany), 6-9 June 2011 Future Plan Commercial operation of 25.8kV/630A HTS hybrid FCL ~ (Planned) Development of Fault Current Limiter for Biz. Model ~ (Planned) 1.Biz. Model 1: 25.8kV/600A FCL - Application site: KEPCO DL (Underground grid) 2.Biz. Model 2: 22kV/5,000A FCL - Application site : POSCO (Steel plant in Korea)