Power Quality Analysis and Protection and Selectivity Studies

ANALYSIS SERVICES

> Voltage
> Current
> Frequency
> Power factor
> KVAR Index
> Active, reactive and apparent power
> Detection of transients in the electrical network
> Voltage fluctuation
> Flicker
> Analysis of consumer demand
> Scope report
> Voltage (DHTV) and current (DHTI) harmonic distortion levels from the 1st to the 50th even and odd orders
> Thermographic report of circuit-breaker transformers, QGBT, disconnector switches and motors

 

PROTECTION AND SELECTIVITY STUDY

Calculation Methodology

Short-circuit currents are calculated in accordance with IEC 60909-0 Short-circuit Currents and Three-phase A.C. Systems Part 0. First Edition – 2001-07.

 

Selectivity Study Results

> Time-current curves (coordination charts)
> Comments and observations about the time-current curves
> Protection device adjustment spreadsheets
> Conclusions and recommendations

 

Short Circuit Study Results

> Electrical system settings
> Limitations of the analyzed configurations
> Single-line diagram for short circuit study with currents calculated in each bus of the system, as well as the X/R relationship
> Summaries of short-circuit currents in the main system buses
> Conclusions and recommendations on short circuit calculations