고체변압기 Solid-state Transformer
Solid-state Transformer
- 제품개요 Product Overview
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기존 전자유도 원리를 이용한 변압기 대신 전력전자 기술을 활용한 전력변환용 변압기
철심+코일 전압변환 → 반도체 소자(SiC, GaN 등)로 멀티 컨버터(PFC, UPS, 정류기) 기능 A power conversion transformer utilizing power electronics technology instead of conventional electromagnetic induction-based transformers
Replaces iron-core and coil voltage conversion with semiconductor devices (SiC, GaN, etc.), enabling multi-converter functions such as PFC, UPS, and rectifiers - 주요특징 Key Features
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MV·HV → 저압 변환 시 중간단계에서 고주파 이용, 변압기 크기 감소(전력밀도 상향)
전력흐름 제어 및 분산전원 계통 연계가 용이하며 양방향 전력변환 가능
계통의 전압·전류·주파수를 실시간 디지털 방식으로 제어(DAB : Dual Active Bridge) Uses high-frequency conversion at an intermediate stage for MV/HV to LV transformation, reducing transformer size and increasing power density
Enables flexible power flow control, easy integration with distributed energy resources, and bidirectional power conversion
Real-time digital control of grid voltage, current, and frequency (DAB : Dual Active Bridge) - 활용방안 Applications
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AI Data Center(10kV 2400kW) : 중국 바이두, 알리바바, 차이나모바일 등 사용
신재생에너지 및 DC 저압 계통 연계(태양광 발전 저장·공급, 탄소배출 감소, 비용절감)
전기자동차(EV) 충전소 활용(전기차 급·완속 충전, Minimalism 실현) AI Data Centers (10kV 2,400kW) : deployed by Baidu, Alibaba, China Mobile, etc.
Integration with renewable energy and low-voltage DC systems (solar power storage and supply, carbon emission reduction, cost savings)
Electric vehicle (EV) charging stations (supports both fast and slow charging, enables minimalist design)
VSC-HVDC IGBT Valve
- 제품특징 Product Features
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MMC 기술 적용, 모듈화·표준화 설계로 납기·시공 단축 및 저차고조파·저스위칭 구조
고효율 시스템 및 저손실 운전, 고신뢰성 보호·냉각 설계 적용 Applies MMC (Modular Multilevel Converter) technology; modular and standardized design shortens delivery and installation time, with low harmonics and a reduced switching structure
High-efficiency, low-loss operation with highly reliable protection and cooling design - 공급유형 Supply Type
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전력 송전, 재생에너지 연계, 계통 안정화, 해저·지중 HVDC, 산업용 전력설비
DC Bus MOA, DC Filter MOA, Valve MOA, Neutral Bus MOA 등 Power transmission, renewable energy integration, grid stabilization, submarine and underground HVDC, industrial power facilities
DC Bus MOA, DC Filter MOA, Valve MOA, Neutral Bus MOA, etc. - 국내 공급실적 Domestic Supply Performance
- 한국전력공사 및 제주 시범사업 납품 Supplied to KEPCO, including the Jeju pilot project
- 해외 공급실적 Overseas Supply Performance
- 중국 내 다수 실적 및 해외 VSC-HVDC 프로젝트 Proven track record in China and overseas VSC-HVDC projects
초고압 직류송전(UHVDC) UHVDC Converter Valve
Converter Valve
- 제품특징 Product Features
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AC-DC 계통 연계설비, 컨버터 밸브, VCU, 밸브 냉각시스템 구성
12펄스 컨버터 토폴로지 및 대규모 전력 연계용 Composed of AC–DC interconnection facilities, converter valves, valve control units (VCU), and valve cooling systems
12-pulse converter topology, designed for large-scale interconnection between countries and regions - 공급유형 Supply Type
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초고압 장거리 DC 송전(UHVDC), Back-to-Back DC 송전시스템
다단자(Multi-terminal) DC 송전시스템, 대용량·초고압 전압 레벨 DC 송전시스템 Ultra High Voltage DC (UHVDC) long-distance transmission, Back-to-Back DC transmission systems
Multi-terminal DC transmission systems, large-capacity and ultra-high voltage level DC transmission systems - 공급실적 Supply Performance
- 중국 및 해외 대규모 UHVDC 송전 프로젝트 적용 Applied in large-scale UHVDC transmission projects in China and overseas
고전압 DC 차단기 High-Voltage DC Circuit Breaker (HVDC CB)
High-voltage DC CB
- 제품특징 Product Features
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초고속·대전류 차단성능, 아크없는 차단기능, 모듈화·Unit화 설계, 직접형 밸브 타워 구조
브리지 정류형 하이브리드 topology, 저손실, 고속제동(<3ms), 큰 제동전류(>25kA) Ultra-fast, high-current interruption with arc-free breaking capability, modular unitized design, and direct-type valve tower structure
Bridge-rectifier-based hybrid topology with low losses, ultra-fast interruption (<3ms), and high interruption current (>25kA) - 공급유형 Supply Type
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HVDC 송전망 보호용 DC 차단기 및 다단자(Multi-terminal) HVDC 시스템
차세대 DC Grid 구축 프로젝트, EPC 기반 HVDC 시스템 기자재 공급 DC circuit breakers for HVDC transmission network protection and multi-terminal HVDC systems
Next-generation DC grid development projects and EPC-based supply of HVDC system equipment - 공급실적 Supply Performance
- 중국 및 해외 대규모 UHVDC 송전 프로젝트 Large-scale UHVDC transmission projects in China and overseas
MVDC MVDC (Medium Voltage DC)
Medium Voltage DC
- 제품특징 Product Features
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양방향 전력 흐름 제어, 기존 AC 링크를 DC로 변환하여 송전용량 증대
AC 그리드 무효전력 보상, 재생에너지 침투율 향상, 전력품질 개선 및 충격 부하 대응 Bidirectional power flow control and increased transmission capacity through AC-to-DC conversion of existing AC links
Reactive power compensation for AC grids, enhanced renewable energy penetration, improved power quality, and response to sudden load changes - 적용사례 Applications
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Jiang Dong MVDC 프로젝트
- 컨버터 밸브(±10kV / 10MW Back-to-Back 3기)
- DC 차단기(정격전류 1kA, 차단전류 10kA, 차단시간 ≤ 3ms)
- DC 변압기(±10kV → ±375V, 500kW)
- 연계망 : 20kV와 10kV AC 배전망 연결 Jiang Dong MVDC Project
- Converter Valves (±10kV / 10MW Back-to-Back, three units)
- DC Circuit Breakers (rated current 1kA, breaking current 10kA, interruption time ≤ 3ms)
- DC Transformers (±10kV → ±375V, 500kW)
- Interconnection Network : connection between 20kV and 10kV AC distribution networks - 솔루션 Solution
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분산형 발전 증가 → 기존 AC 배전망 한계 → MVDC 도입(경제적·신뢰성 높은 대안)
→ 컴팩트 설계 → DC 차단기를 통한 안정적 운영 → 재생에너지 최적 활용 Increase in distributed generation → limitations of existing AC distribution networks → adoption of MVDC as an economical and reliable alternative
→ compact system design → stable operation through DC circuit breakers → optimized utilization of renewable energy