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Load flow, voltage stability & short circuit analyses of a power system are essential for both design and operating stage performance monitoring and to ensure reliable grid operations by adequate protection scheme settings. In this research work, electrical model of a 1240 MW combined cycle power plant (CCPP) is developed on Electrical Transient Analyzer Program (ETAP) and load flow, voltage stability...
In this paper, models of central-station PV plants, are represented. The detailed and equivalent PV models and area of their applications and limitations for different studies (load flow, short circuit calculation, RMS modeling and harmonic analysis) are proposed. Levels of detailing from one node to in-depth model of PV plant are overviewed.
Offshore vessels and ships are islanded power systems. Maintaining the operation during the adverse system operating conditions is a challenge. This paper reviews the concepts to improve the protection and operation using the advanced system protection and new developments of the simulating process.
The interconnection of distributed resources to unbalanced distribution systems, the increasing availability of more precise network data, and the need for accurate modeling of networks from subtransmission level to meshed secondary levels in dense urban areas require comprehensive analysis and simulation tools. This paper demonstrates a common solution platform in a compact form for the analysis...
The paper presents steady-state and transient studies to assess the impact of a 200 MW Central Receiver Solar Power Plant (CRSPP) connection on the Main Interconnected Transmission System (MITS) of Oman. The CRSPP consists mainly of a central solar receiver, power tower, thousands of heliostats, molten salt storage tanks, heat exchangers, steam generator, steam turbine, synchronous generator, and...
The paper presents steady-state and transient studies to assess the impact of a 200 MW Photovoltaic Power plant (PVPP) connection on the Main Interconnected Transmission System (MITS) of Oman. The PVPP consists mainly of a large number of solar arrays, DC/DC converters, DC/AC inverters, filters, and step-up transformers. Two proposed locations are considered to connect the PVPP plant to MITS: Manah...
Switching study conducted to support the operation plan of 275 kV transmission line between Padang Sidempuan 275 kV Substation to Payakumbuh 275 kV Substation at the end of 2012. This transmission line will be the system backbone for North System and Middle-South system interconnection. When the interconnection is done, the operation flexibility in Sumatera will be better, in terms of plant load planning...
The power system analysis studies serve as the basis for ensuring reliability, improving system performance and power quality, reducing operating costs, and providing a reliable supply power during system operation. Thus, this paper presents a case study for designing power supply system for an offshore platform which will include load flow study, short circuit study and transient stability study...
Load flow and short circuit studies are the two important power system analysis components to ensure the system upgrades, future upgrades and present distribution equipment meeting the present and future requirements. A number of power system analysis softwares are used to perform the analysis. This paper presents the analysis of load flow and short circuit studies of an offshore platform using ERACS...
A power system analysis determines whether the proposed system upgrades, future upgrades and present distribution equipment will meet the present and future system requirements. This project involves two major parts, namely modelling and simulation for the purpose of load flow and short circuit studies. Modelling here refers to the mathematical representation of various components of a power system...
This paper presents results from an analysis of voltage stability following severe contingencies in the PJM system. The analyses involved the use of steady-state (OPF) and short- and long-term simulation tools. The results highlight the importance of adequate load modeling in assessing the performance of and solutions to voltage instability. Undervoltage load shedding (UVLS) is shown to be beneficial...
This paper reports on experience to date in studying and designing interconnections to existing power systems for the VFT application at Linden, New Jersey between the New York ISO and PJM control areas. Since the VFT is by definition a transmission connection device, it will have two connections to existing systems which are often located in areas controlled by different grid operators. Included...
The process requirements of liquefied natural gas (LNG) plants demand a high level of reliability from the supporting electrical power system. Extensive power system studies are required to confirm that the proposed electrical system meets the stringent design requirements. This paper outlines the load-flow, short-circuit, transient-stability and harmonic studies typically undertaken as part of the...
The purpose of this paper is to present a step-by-step approach to performing a power system study for a cement plant electrical distribution system. The analysis should always include short circuit, load flow, motor starting, overcurrent coordination and arc flash hazard studies
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