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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.
Design and commission of a green-site power system including protection coordination for the entire site and implementation of IEC61850 communications, inter-tripping, inter-locking and protection blocking schemes.
A practical example of an internal review of a protection coordination study, including the definition of protective device settings & characteristics.
High penetration of solar PV energy fed into an electrical grid brings its share of challenges making the grid volatile which requires stabilizing variable energy. This presentation addresses one such challenge, of voltage profile improvement with reactive power compensation at the point of interconnection. A solar PV plant is rated in terms of power (either AC or DC) and is typically not rated for their reactive counterparts (MVAr). IEEE 1547/UL 1741 compliant inverters will typically not have reactive power capability and operate with a unity power factor. Although modern inverters have a capacity to supply reactive power in the range of +0.9 lead/-0.9 lag, the PV plant is rated based on the AC power supplied by the inverter at unity PF. Operational data sourced from various plants in India suggest that a typical utility-scale PV plant provides reactive energy in the range of 7% to 10%. This leads to an inherent error in the per-unit cost calculation, as when the inverter providing the reactive power, the active power is hampered. This paper showcases a cost-to-benefit analysis of various scenarios, such as unity power.
Arc Flash Analysis was performed on a new datacenter building in Italy, calculating Incident Energy and Arc Flash Boundaries at several locations, from the main 15kV distribution switch gears down to the main LV distribution switchboard and diversionary panel boards in each segment. The studies were performed using ETAP Arc Flash software to identify the correct personal protection equipment (PPE) for engineering staff during maintenances operations. Standards applied include: NFPA 70E-2021, IEEE 1584-2018, IEC 60909 (2016).
This presentation will address the difficulties and lessons learnt on performing arc flash analysis using available methods (outside the voltage limits of IEEE 1584-2018 standard) on a 2.3 MW PV generation facility. The analysis includes system modeling, short-circuit, arc flash (both AC and DC) using various applicable calculation methods that best fit this application along with available tools in ETAP and generating worst-case arc flash deliverables.
Konexa rolling out its integrated distribution model with multiple DISCOs across Nigeria. In its sub-concession area, Konexa will develop embedded generation capacity (solar PV), and invest in the distribution network (medium voltage line, distribution transformers, injection substations) and last mile reticulation (low voltage lines, smart metering infrastructure). In addition, Konexa will invest in and implement IT & OT systems and processes to drive operational efficiency and significantly reduce ATC&C losses. The first phase of the project would serve about 7,000 customers (C&I and residentials).
Electrical Power System Analysis & Operation Software
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