Technology
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2026-07-29 22:08
Specialized Technology
Electrical Circuit Equipment Diagnosis
- Reliability verification and prevention of power generation delays by confirming the adequacy of control, limiting, and protection functions of Automatic Voltage Regulators, AVR, through simulation-based diagnosis
- Characteristic analysis, integrity assessment, and failure diagnosis of power semiconductors such as IGBTs, Insulated Gate Bipolar Transistors, and thyristors in gas turbine starting systems, SFC, and Uninterruptible Power Supply systems, UPS
- Prevention of generator asynchronous closing accidents through characteristic diagnosis of automatic synchronizing systems by verifying whether grid connection signals are generated within the set range and whether actual grid connection is appropriate
Diagnosis Service
Automatic Voltage Regulator Diagnosis
- Over-excitation and under-excitation limit and protection tests
- Over-fluxing limit and trip tests
- PT signal loss test
- Power System Stabilizer, PSS, response test
Gas Turbine Starting System Diagnosis
- Static characteristic test of power semiconductor devices
- Integrity diagnosis of gate pulses for converter and inverter control
Uninterruptible Power Supply Diagnosis
- Integrity diagnosis of gate pulses for converter and inverter control
- Integrity diagnosis through transfer tests and alarm tests between inverter and bypass systems
Phase Controlled Rectifier Diagnosis
- Static characteristic test of power semiconductor devices, including IGBTs and thyristors
- Integrity diagnosis of major components such as RLC devices
- Integrity diagnosis through simulated load testing
Automatic Synchronizing System Diagnosis
- Verification of generator synchronization range and adequacy
- Inspection of voltage and frequency adjustment functions between the generator and the power system
- Verification of automatic synchronizing signals and adequacy of generator circuit breaker closing time
Solution
01
Automatic Voltage Regulator
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Parameter adjustment and tuning
- Control function settings
- Protection function settings
- Diagnosis and commissioning of control card operating characteristics
02
Gas Turbine Starting System Diagnosis
- Characteristic diagnosis of power semiconductor devices, replacement, and commissioning
- Analysis and normalization of causes of synchronous motor, generator, starting failure
03
Uninterruptible Power Supply Diagnosis
- Inspection, adjustment, and commissioning of converter output voltage
- Inspection, adjustment, and commissioning of inverter output voltage, frequency, and phase
- Normalization through cause analysis and diagnosis in the event of asynchronous transfer between inverter and bypass systems
04
Phase-Controlled Rectifier
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Characteristic diagnosis of power semiconductor devices and replacement of failed or degraded components
- SCR(Silicon Controlled Rectifier)
- IGBT(Insulated Gate Bipolar Transistor)
- Proposal of reasonable management plans through simulated load testing after component replacement
05
Automatic Synchronizing System
- Adjustment of settings including △V, △F, △α, and advance time
- Determination of usability and review of replacement when test results do not meet acceptance criteria
- Proposal of reasonable operation plans through commissioning data and trend analysis
Major Clients
Domestic
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Korea Hydro & Nuclear Power
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Korea East-West Power
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Korea Midland Power
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Korea Western Power
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Korea South-East Power
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Korea Southern Power
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Korea District Heating Corporation
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POSCO
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SH Corporation
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GS E&R
Overseas
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Panasia Energy Holding INC.(Philippines)
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Vedanta Limited(India)
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UTE(Uruguay)
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Boleo
Boleo(Mexico)