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2026-07-29 22:08
메인 Technology Specialized Technology Power Protection System Diagnosis

Specialized Technology

Power Protection System Diagnosis

  • Commissioning tests to verify newly installed or expanded power protection systems.
  • Periodic tests of devices essential to the stable operation of power protection systems, such as protective relays, CTs/PTs, and transducers
  • Ad hoc tests to identify trip causes and verify protection systems through fault waveform and event analysis
  • In-plant (station) power system analysis to verify the adequacy of power equipment selection and protective device setting values

Diagnosis Service

Protective Relay Characteristic Test

  • Stator Differential Function Test
  • Stator Ground Function Test
  • Generator Unbalance Function Test
  • Under & Overfrequency Function Test
  • Over Excitation Function Test
  • Reverse Power Function Test
  • Inadvertent Generator Energization Function Test
  • Breaker Failure Function Test

Instrument Transformer, CT/PT, Characteristic Test

  • Ratio error test
  • Saturation test
  • Polarity test

Station Power System Analysis

  • Load Flow Analysis
  • Short Circuit Analysis
  • Motor Acceleration Dynamic / Static Analysis
  • Star - Coordination Analysis

Solution

01

Protective Relay

  • Replacement of input, output, DSP, and calculation modules
  • Re-setting of protective relays
  • Proposal of improvement plans for protection system vulnerabilities
02

Instrument Transformer

  • Replacement of CTs and PTs with defective characteristics
  • Determination of usability of CTs and PTs that do not meet test criteria
  • Circuit loop check and correction in the event of polarity defects
03

Station Power System

  • Power flow distribution
  • Recalculation of circuit breaker capacity
  • Adjustment of operating methods
  • Redesign related to equipment expansion
  • Protection Relay Re-coordination

Major Clients

Domestic

  • Korea Hydro & Nuclear Power

  • Korea East-West Power

  • Korea Midland Power

  • Korea Western Power

  • Korea South-East Power

  • Korea Southern Power

  • Korea District Heating Corporation

  • SH Corporation

  • Incheon Airport Energy

  • GS E&R

  • GS Caltex

  • GS Power

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