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SCADA - Configuration and Integration

Transmission & Distribution Protection

Aug 7, 2015, 20:54 PM
Relay Setting Software, Distance Relay Protection & Coordination Software, Transmission Line Protection Software, Automatic device coordination Software, device coordination and selectivity, Relay Coordination Program, protective device coordination
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T&D Protection & Coordination Analysis Software
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StarZ™ - Perform system-wide protection studies and evaluate the relay performance.
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Distance Relay Characteristic Plot & Coordination
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T&D Protection & Coordination Evaluation Software
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Single / Sliding Fault & Line Loadability Analyses
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State Plots & Device Setting Reports
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Transmission Line Protection Software | Distance Relay Setting Software
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StarZ™ transmission and distribution system protection & coordination software offers insight into line protection, protective relay performance & evaluation, troubleshooting false trips, and system-wide protective device operation.
  • Evaluate & Verify Protection & Coordination
  • Reduce Human Error in Relay Settings & Logic
  • Simulate Model-Specific Protection Settings & Functions
  • Offer Distance, Overcurrent, Directional, Differential, Load Encroachment and other functions
  • Employ Advanced Power Flow & Fault Analyses for Unbalanced Network
  • Use Real-Time Operational Data for System Evaluation
  • Virtually Animate Sequence-of-Operation of Protective Devices
  • Comprehensive relay library including impedance-based functions
  • Accurate & realistic distance relay modeling
  • In-depth performance evaluation of impedance / distance relays
  • Plot R-X characteristics & seen impedances
  • Graphical tool for setting verification & protection coordination
  • Plot multiple lines, relays and characteristics
  • Plot characteristics in primary and secondary
  • Automatically scale impedances due to power transformer
  • Intelligent alert viewer to identify & resolve characteristic setting errors
  • Simulate the actual analog & digital I/Os
  • Data communication between relays and interlocks
  • Local & remote backup protection
  • Breaker failure & protection schemes
  • Protective Device Sequence-of-Operation
  • Fault insertion between CT, VTs and CBs
  • Supports single-phase system & train applications
  • Message viewer to identify relay setting, interface and logic errors
  • Single fault analysis
  • Sliding fault analysis
  • Unbalanced load flow & transmission line loadability analysis
  • Multiple fault locations & resistances analysis in one-click
  • Series compensated line evaluation with MOV action
  • Mutually coupled lines
  • Time state plots
  • Time Distance Characteristic plots (TDC)
  • Time Distance-Resistance Characteristic plots (TDRC)
  • Plot status of I/Os vs. a range of fault locations & resistances
  • Detailed device setting reports
  • Export relay settings to xml & Excel formats

Detailed Modeling of Protection & Control system

All the details of substation protection and control system (P&C) such as bus configuration, CTs and PTs, CBs, Switches can be graphically modeled. Not only this is for the sake of graphical representation, but also fault can be applied on any connector between power system primary components. This allows to catch blind spots and deep setting errors in the protection system.

To reduce the wiring among relays and instrument transformers, ETAP allows protection relays to be connected remotely to CTs and PTs through a newly enhanced remote connector element.


StarZ simulates and evaluates model-specific protection settings and functions similar to the actual relay. This means that in ETAP, the user configures the same settings and protection element outputs as that of the actual relay.

ETAP emulates realistic performance of distance relays considering choice of polarization, dynamic expansion, and many other factors.


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  • distance relay characteristics

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