Protective relaying is one of the most critical and complex areas of power system design. New NERC requirements have added even more complexity to the process, making the utility engineer's daily tasks extremely challenging. The good news is that utility engineers don't have to go it alone. SynchroGrid is here to alleviate our customer's workloads and offer them peace of mind.


Please see SynchroGrid's service categories below:

Protection and Control

  • Relay one lines
  • Three lines
  • Control schematics
  • Wiring diagrams

Relay Set​tings and Coordination Studies

  • Relay coordination studies
  • Fault studies
  • Breaker interrupting analysis
  • Relaying philosophy preparation and standardization
  • SEL, GE, Areva, and ABB microprocessor relays
    • Line protection
    • Transformer protection
    • Bus protection
    • Feeder protection
 

Relay Mis-Operation Analysis

  • Evaluation of relay settings and errors
  • Evaluation of relay performance
  • Evaluation of system protection design performance
  • Relay mis-operation NERC report preparation
  • Lab testing of fault records

Substation Automation

  • SEL RTAC and communication processors
  • Remote terminal units
  • Substation switches and networking
  • Application of 61850 process bus
  • Phasor measurement units
  • Phasor data concentrators
  • HMI configurations

Projects in this category

CTT: 345kV Railhead Reactor Addition

SynchroGrid provided relay settings and GOOSE messaging review along with quality control for Cross Texas Transmission's Railhead reactor additions.

CTT: 345kV Gray-Allen Creek Line Addition

SynchroGrid provided relay settings and GOOSE messaging review along with quality control for Cross Texas Transmission's Gray to Allen Creek line additions.

CTT: 345kV Gray Shunt Reactor Upgrade

SynchroGrid provided relay settings and GOOSE messaging review along with quality control for Cross Texas Transmission's Gray shunt reactor upgrades.

Oncor Electric: Odessa North Substation

SynchroGrid provided relay settings services for the entire 138:12.47kV Substation. 

 

BTU: Relay Setting Coordination and Review

SynchroGrid provided relay setting coordination review and quality control for several transmission line panels.

345kV Line Reactor: Mis-Operation Analysis

SynchroGrid analyzed the operation of a 345kV line reactor during energization.

345kV Line Reclosing: Mis-Operation Analysis

SynchroGrid analyzed the operation of a 345kV transmission line for reclosing issue on a L90 relay.

CTT: 345kV Relay Setting Verification

SynchroGrid provided a relay settings review for Cross Texas Transmission's 345kV Gray Substation

CTT: 345kV Relay Coordination Study

SynchroGrid provided a relay coordination study for Cross Texas Transmission's entire 345kV system.

 

BTU: Transformer Relay Upgrade

SynchroGrid provided substation design services to upgrade four transformer relays, as well as used mathematical equations to create a separate differential function to differentiate faults between zone 1 and zone 2.

Oncor Electric: Cowden North Substation

SynchroGrid developed extensive relay settings for Oncor Electric's Cowden North Substation. In addition, we provided relay coordination for the transformer and distribution feeder. 

Oncor Electric: Alkali Lake Substation Relay Settings

SynchroGrid developed extensive relay settings as well as relay coordination for Oncor Electric's Alkali Lake Substation. 

BTU: South Switch - Green Prairie Review

SynchroGrid provided relay setting coordination review and quality control for the entire system and control of the 138kV substation at BTU's South Switch - Green Prairie site. 

BTU: Steephollow - Tabor Review

SynchroGrid provided relay setting coordination review and quality control for the entire system and control of Bryan Texas Utility's Steephollow-Tabor substation.

BTU: Kurten Settings Review

SynchroGrid provided relay setting coordination review and quality control for the entire system and control of Bryan Texas Utility's 138 kV Kurten substation. 

NRG: ERCOT RARF Submission

SynchroGrid provided a relay settings review for the ERCOT Region. This was for ERCOT RARF 5.4.

CTT: Allen Creek Settings Review

SynchroGrid reviewed the SEL RDB settings and logic for the entire system of Cross Texas Transmission's Allen Creek substation.

BTU: Generator Unit Review

SynchroGrid conducted a review of three generator units for Bryan Texas Utilities.

BTU: Enterprise Substation Relay Setting Development & Review

SynchroGrid provided quality system protection services in developing settings for a number of local terminals including Enterprise, TAMU, and Dowling terminals.

CTT: Transmission Line Relay Firmware Upgrade

This project consisted of verifying the adequacy and reliability of new features and settings along with existing settings within the firmware upgrade.

Oncor Electric: Extensive Relay Setting Development

SynchroGrid provided quality relay setting development services by creating new settings for relays at a number of substations including those located at Corinth, Sycamore Creek, Garland, & Stanton.