ETAP StarZ™

T&D Protection & Coordination Software

Protection & Coordination Study of Distribution Feeders Equipped with Faulted Circuit Indicators

42:50 Webinars

Faulted circuit indicators (FCIs) are used in today’s distribution systems to locate the faulted section of the feeder and thereby achieving faster restoration and minimal loss of service. In recent years, thanks to the advancement in wireless communication technologies, it is now possible to wirelessly transmit FCI’s signal to the upstream recloser within a time range of a power system cycle. This has enabled several new applications of FCIs with high speed wireless communication capability to enhance distribution protection schemes. These new applications can reduce fault clearing time and momentary loss of service while still keeping the system coordination and increasing the reliability of the distribution protection system and quality of service.

Introduction to StarZ Video

Directional Overcurrent Protection of Wind Power Plant Collector

47:54 Webinars

Full range reactive power support is available in case of electronically-coupled generation sources such as wind turbine generation (WTG) types 3 and 4. If WTG active power generation is less than its auxiliary power while WTG absorbs inductive reactive power from the system, the current angle measured by the directional element resembles a current angle occurring during forward fault as observed by the collector protection relay. This may lead to a false trip and loss of wind power generation.
In this webinar, challenges of directional protection of wind farm collectors will be demonstrated. ETAP StarZ™ – Protection & Coordination module will be utilized to set and analyze directional overcurrent protection of wind power plant collectors. Finally, a few solutions offered by the industry will be presented and evaluated.

Directional Overcurrent Protection of Wind Power Plant Collector

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This webinar presents the process of modeling, simulation and protection & coordination study of distribution feeders equipped with fault circuit indicators in ETAP. Four applications, where the device fault clearing time can be reduced using wireless protection sensor (WPS) signal, will be studied:

  • Switching from a fuse-saving scheme to a fuse-blowing scheme in case of a permanent fault downstream of fuse
  • Enhancing fuse-blowing scheme to accelerate fault clearance in case of a fault upstream of fuse
  • Permit recloser fast curve to trip for faults within unfused sections of the feeder
  • Using multiple time current characteristic (TCC) curves to adaptively coordinate recloser with downstream fuses with different ratings
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