588 Item(s) found

Protection Coordination at Panama Mina de Cobre

Protection Coordination at Panama Mina de Cobre

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.

Review Process in Protection Coordination Studies

Review Process in Protection Coordination Studies

A practical example of an internal review of a protection coordination study, including the definition of protective device settings & characteristics.

Reactive Power based LCOE Analysis

Reactive Power based LCOE Analysis

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.

AC Arc Flash Analysis for a Datacenter Network in Italy to determine the PPE for Workers using ETAP

AC Arc Flash Analysis for a Datacenter Network in Italy to determine the PPE for Workers using ETAP

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).

AC and DC Arc Flash Methods for Renewable Energy Systems

AC and DC Arc Flash Methods for Renewable Energy Systems

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's Digital Grid Journey

Konexa's Digital Grid Journey

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).

Remote Management of Protection Relays

Remote Management of Protection Relays

This presentation defines and demonstrates the importance of remote data collection of protection relays for the security and reliability of large power system networks. Oman Electricity Transmission Company grid stations contain more than 5000 rapidly expanding protection relays installed. In case of tripping incidences, the protection system would isolate the faulty primary equipment by actuating the switchgear. These isolated equipment restorations can be done faster if protection relays’ fault records and events can be retrieved through remote access at any time. ETAP and OETC jointly worked to provide remote relay access and data retrieval. The protection system model and relay data feed in a relay management system solution, is called ETAP eProtect. This system is connected through IEC 61850 and IEC 60870-5-103 protocol to linked relays, events, and fault records. Fault records are stored in a database for detailed analysis and validation. This presentation discusses the challenges faced, technical requirements, and benefits of the solution.

Using ETAP to Evaluate Ground Fault Trips in a Microgrid

Using ETAP to Evaluate Ground Fault Trips in a Microgrid

Adding distributed generation sources to existing power distribution systems and the implementation of islanding microgrid capability introduce protection and control challenges if not properly designed. Each new generator may present a new source ground fault current to the system, which can result in unanticipated breaker operation. Energy Systems Group, was using ETAP to model the system and check coordination of local and remote breakers can reduce downtime and troubleshooting.

GreeNext to Provide Sustainable and Resilient Energy-as-a-Service, in Collaboration with ETAP

GreeNext to Provide Sustainable and Resilient Energy-as-a-Service, in Collaboration with ETAP

This presentation introduces GreeNext, a joint venture providing sustainable and resilient energy solutions to commercial and industrial customers through solar and battery hybrid microgrid technology. Learn how and why GreeNext will utilize ETAP Software and controller hardware to increase deployment speed and provide an additional layer of reliability for Data Centers.

Modeling and Analysis of a Microgrid for a Wastewater Treatment Plant - AECOM

Modeling and Analysis of a Microgrid for a Wastewater Treatment Plant - AECOM

Engineering and operation objectives of mission-critical facilities require a reliable and secure power supply system. Microgrids have become the leading technological solution for a resilient and sustainable supply of electricity for critical infrastructures. This paper presents ETAP-based power system studies of a microgrid designed for a mission-critical facility, a wastewater treatment plant (WWTP). The microgrid consists of a behind-the-meter (BTM) solar photovoltaic (PV) system, a battery energy storage system (BESS), a combined heat and power (CHP) generator, and standby diesel generators. We modeled this microgrid by leveraging the ETAP software and performed power system studies for both grid-connected and islanded modes of operation. Several scenarios were created based on different loading conditions and power source combinations, which are utilized to validate the power system studies. We will discuss the model of the power system investigated, operational strategy and sequences of operation, findings, challenges, lessons learned, and future works.