Power Grid test & anlysis

1. 1. Failure Current Calculation

   1. 1) System power, Transformer, cable etc. Impedance
   2. 2) Accurate fault current calculation by program(ETAP)
   3. 3) 3 phase short circuit Short circuit between Cable Single line to ground fault short circuit capacity calculation
   4. 4) Electric equipment rating & capacity review
   5. 5) Power grid system organization test
   6. 6) Arc Flash Haqard analysis following the fault currnet

2. 2. Power Algae Analysis

   1. 1) Research of LOADDATA & operation case
   2. 2) According to anlysis program, input DATA & power flow analysis each operation case.
   3. 3) Voltage drop and power factor analysis for each bus
   4. 4) Transformer load ratio per driving case
   5. 5) Suggestion of optimal system configuration and operation plan.

3. 3. Harmonic Measurement and analysis

   1. 1) Research of load and harmonic generator
   2. 2) Harmonic field measurement : voltage, current harmonic waveform, THD, etc.
   3. 3) Review the effect of harmonics on each power device
   4. 4) Present the most reasonable improvement measures in the current situation

4. 4. Diagnosis of power system configuration

   1. 1) Problems of commercial power system configuration and suggestions for improvenent.
         (Transformer bank configuration, bus configuration, etc.)
   2. 2) Problems and Improvements of Emergency power system configuration Emergency bus configuration,
         connection between emergency generator and commercial power supply, etc.

5. 5. Power equipment rating and capacity review

   1. 1) Review of transformer capacity adequacy
   2. 2) Examination of suitability of breaker rating and breaking capacity
   3. 3) Examination of suitability of cable specification
   4. 4) Review the appropriateness of transformer (MOF, PT, GPT, CT, ZCT)
   5. 5) Capacity of power capacitor (including reactor) appropriateness examination
   6. 6) Emergency power facility (generator, UPS, ets.)