SERVICE

POWER SYSTEM PROTECTION

Drawing Design

• • Breaker Closing and Tripping Scheme

  • Demolition and Installation Drawing Package

  • Single Line Diagram, AC/DC Schematic, and Wiring Diagram

Relay Protection Logic and Setting Calculation

• • Transformer Protection

  • Bus Protection

  • Motor Protection

  • Distribution System Protection

  • Transmission Line Protection

  • Generation Protection

Protection Scheme

• • Arc Flash Protection

  • Zone Selective interlocking (Fast Bus Protection)

  • California Rule 21

  • Synchronization

Testing and Commissioning

POWER SYSTEM ANALYSIS

Coordination Study

Short Circuit Study

Arc Flash Study NFPA 70E

Load Flow Study

POWER SYSTEM AUTOMATION

SCADA with Modbus, DNP3, IEC61850, SEL Mirrored Bits, etc

• • Event Collection

  • Remote Control Capability

  • System Alarming

  • Annunciation

User Management and Password Management

Human Machine Interface (HMI)

Communication Network

Automation Scheme

• • Automatic Transfer Scheme

  • Direct Transfer Tripping

  • Automatic Synchronization

  • Load Shredding

Testing and Commissioning

Microgrid Control

Grid Connected mode

• • Automatic Generation Control - Droop Mode

  • Peak Shaving

  • Power Factor Control System (PFCS) 

  • Island Detection and Decoupling 

    1. Anti Islanding

    2. Islanding - IEEE 1547-2018 Ride Through

    3. 81RF Seamless Islanding

Islanded mode

• • Load and Generation Shedding/Runback 

  • Contingency-based/Frequency-Based load shedding 

  • Automatic Generation Control - Isochronous Mode

  • Volt/VAR Algorithms

Synchronization 

Black start 

• Microgrids Reconfiguration

• DER Starting

• Load Reacceleration.

BESS Charging Strategy 

• • Strategy 1 

Ensures a certain minimum level of charge in the BESS

• • Strategy 2

Capitalizes on periods of high PV output to charge the BESS more aggressively