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For some types of generator exciter systems, collector rings and brushes are used to provide energy from the exciter to the rotating field. The brushes wear down and constantly need to be replaced with the unit on-line and while brush/ring assembly is still energized, a risky and unsafe maintenance operation and may cause a serious harm. A potential shock and arc-flash hazard. This presentation addresses the important and dangerous maintenance of worn-down collector rings and brushes, electrical safety, lack of standards and guidelines, and a first possible calculation method.
ETAP Train Power Simulation - eTraX™ software includes validated, user-friendly and flexible software tools for designing, analyzing and managing AC and DC railway infrastructure. Learn how eTraX integrates with ETAP protection & coordination software (StarZ) to offer insights into line protection, protective relay performance & evaluation, troubleshooting false trips, and system-wide protective device operation.
ETAP 22 offers an impressive new set of integrated power analysis modules,
electrical dimensioning capabilities, automation, and operations solutions.
ZSI (Zone Selective Interlock) Scheme has been developed about 40 years ago and since then, the application has expanded from Protection to Arc Flash Hazard Mitigation and even Coordination or Selectivity.
The design, sizing, and regulation of the protection system are still one of the major challenges for the integrity and continuity of operation of the power system despite the continuous technology evolution. Protection system shall be capable to continuously monitor the power system, operate quickly and selectively under hundreds of transitory conditions for any type of fault without false trips with the objective to minimize outages, improve safety, and maximize service continuity. This presentation covers a real case study for an expansion of a brownfield industrial installation with new equipment that prompted the need for modification of existing protective device settings thus, requiring revision and re-validation of the coordination studies. The case study will demonstrate how ETAP software features and capabilities were utilized to verify the new / recommended settings to address the protection & coordination objectives and arc flash hazard impact.
This presentation will feature covert ABB Fault Current Limiter (FCL) application engineering for Is-limiters. We will explain the fault current limiter technology by using the well-known ABB FCL Is-limiter. The FCL technology will be introduced, how it clears a short-circuit fault current compared to a standard circuit breaker, and the major components of an FCL. The theory of the application engineering process and the calculation of the tripping value for an FCL will be introduced. Based on an actual customer project, it will be shown how ETAP has facilitated the complex FCL application engineering, and examples will be provided of how the real tripping value for a fault current limiter is determined. The session will conclude with an overview of how etap can already be used today for an FCL application engineering and what will be enhanced in the future.
PETRONAS RAPID project is the largest oil & gas refinery and petrochemical plant in Malaysia which is powered by a 1200MW utilities plant and connected to a 275kV Grid supply. The integrated ETAP model for the RAPID complex reached up to 5000 buses that consist of various distribution voltages from 400V up to 275kV. Protection Coordination evaluation study for the RAPID complex was performed using “PD Sequence-of-Operation” to identify abnormal relay behavior, which may not be observed in the conventional TCC curve. When simulating earth fault at 275kV system, there is sympathetic relay operation at all 275kV healthy feeders due to circulating earth fault current. The circulating earth fault current is more than 1pu, which will potentially cause a broader outage to the RAPID complex. Further analysis has been performed by the author and academician experts to ascertain the root cause of the circulating earth fault current. This presentation will discuss the root cause of sympathetic relay operation during 275kV earth fault simulations and the recommended solutions to mitigate the sympathetic operation. This will help engineering design firms and plant operators clearly understand the protection relay behavior during faults by utilizing ETAP special features.
ETAP Star™ is an easy-to-use, interactive, and powerful platform for overcurrent protection and coordination studies. Supported with 100+ thousands of verified and validated protective device and equipment library models from manufacturers across the world, simulation and analysis of any network are at your fingertips.
Learn about the intuitive and efficient approach for the creation of Time-Current Characteristic Curves and the program’s artificial intelligence (AI) for protection and coordination or selectivity analysis.
In this webinar, we introduce ETAP Unbalanced Network Short Circuit Analysis and demonstrate how to evaluate the impact of shunt, series, and sliding faults on balanced and unbalanced networks:
*Device Duty Evaluation for multi-phase, single-phase, AC & DC systems
* Run and evaluate all fault types in one study
* Shunt, series, and simultaneous faults
* Simulate protective device responses to fault currents and configuration changes
Unbalanced Network Short Circuit Standards:
* ANSI C37.10 for AC systems
* IEC 60909 for AC systems
* IEC 61660 for DC systems
ETAP Arc Flash Analysis software includes a variety of arc flash hazard safety labels in multiple languages. This webinar will demonstrate the new eLabelMaker™ features, such as two-incident energy result labels, QR codes, and fully customizable label. Create arc flash labels in any language even without having access to specific ETAP Language Editions. Existing arc flash labels are still available with every release, but in addition, the eLabelMaker™ allows the user to create any type of label, depending on the specific needs or regional standard requirements.
Electrical Power System Analysis & Operation Software
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