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Showing 1 to 20 of 28 for “"power system reliability"”.
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Power System Reliability Analysis with Distributed Generators
Reliability is a key aspect of power system design and planning. In this research we present a reliability analysis algorithm for large scale, radially operated (with respect to substation), reconfigurable, electrical distribution systems. The algorithm takes into account equipment power handling …
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Operation and assessment of wind energy on power system reliability evaluation
Power companies around the world are incorporating wind power into their electricity networks. Wind power is an intermittent source of energy and its technical and financial impacts on the transmission and distribution networks are not yet totally investigated. This thesis investigates the impact …
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Keep the Lights On: Ensuring Bulk-Power System Reliability in a Decarbonized Future
Policy and market forces are ushering in a new power system, one dominated by variable renewable energy (VRE) resources (wind and solar) and energy-limited resources like energy storage. Because these resources have different characteristics than the conventional thermal generators that make up the …
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Reliability Impacts of Plug-in Hybrid Electric Vehicles on Power Systems
Modern power system aims to provide reliable, economic, as well as environmental friendly power supply to its customers. In the past few decades, power systems are going through considerable changes to both the power consumption side as well as the power generation side. The power system planners …
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Reliability-based Approaches to Quantify Maximum Permissible Penetration Level of Electric Vehicles in Power Systems
… the penetration of sustainable resources in both power and transportation systems. Although transitioning from fossil fuel-based vehicles to electric vehicles (EVs) in transportation systems helps in alleviating many environmental and pollution-related concerns associated with conventional cars, …
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Reliability implications of price responsive demand : a study of New England's power system
… electricity markets. Traditional definitions of power system reliability have carried over from the vertically integrated market structure, but this thinking will become increasingly problematic as the proportion of electricity demand responsive to market prices increases. Using New England as an …
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Effects of GIC Neutral Blocking Devices (NBDs) on transmission lines protection performance and potential for resonance
… current that may have adverse effects on power system reliability. Several GIC blocking device (NBDs) designs are available, but the majority is capacitive. Concerns have arisen about the effects of NBDs on distance-protection relays. To investigate their impact, real-time simulation (of …
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Reliability evaluation of solar power in South Africa's power system
… such as solar photovoltaics (PV) in electric power systems is growing rapidly due to government incentives, and negative environmental impacts associated with conventional generators. Many consider solar PV as a promising alternative source of energy due to its apparent environmental, social …
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The impact of large-scale solar photovoltaic adoption on prices and reliability in the New England power pool
… The higher levels of these technologies in power systems that are anticipated, or at least believably envisioned, make inquiries about their likely impacts on power systems relevant. The intermittency of technologies like wind and solar photovoltaic (PV) systems drives debates about whether …
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Reliability Assessment of Power Systems with Wind Power Generation
Wind power generation, the most promising renewable energy, is increasingly attractive to power industry and the whole society and becomes more significant in the portfolio of generation systems. However, because of the unfavorable features of wind power, it affects all aspects of traditional …
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AN APPROACH TO SECURITY EVALUATION OF COMPOSITE POWER SYSTEMS
A bulk electric power system is composed of generating units, transmission lines, transformers and loads. The complexity varies from one system to another, but the associated technical problems are basically the same. It is not uncommon to find power systems which have more than ten thousand buses. …
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Application of nearly linear solvers to electric power system computation
<p>"To meet the future needs of the electric power system, improvements need to be made in the areas of power system algorithms, simulation, and modeling, specifically to achieve a time frame that is useful to industry. If power system time-domain simulations could run in real-time, then system …
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Understanding the Impact of Large-Scale Power Grid Architectures on Performance
<p>Grid balancing is a critical system requirement for the power grid in matching the supply to the demand. This balancing has historically been achieved by conventional power generators. However, the increasing level of renewable penetration has brought more variability and uncertainty to the grid …
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Improving the reliability performance of medium voltage networks
… and cost effective ways of improving the reliability performance of medium voltage networks. Customers are mainly affected by faults on the distribution MV network, to which, consequently, we have to pay particular attention. A major requirement on electricity supply systems is high supply …
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Electric Distribution Reliability Analysis Considering Time-varying Load, Weather Conditions and Reconfiguration with Distributed Generation
This dissertation is a systematic study of electric power distribution system reliability evaluation and improvement. Reliability evaluation of electric power systems has traditionally been an integral part of planning and operation. Changes in the electric utility coupled with aging electric …
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A Methodology to Assess and Rank the Effects of Hidden Failures in Protection Schemes based on Regions of Vulnerability and Index of Severity
Wide-area disturbances are power outages occurring over large geographical regions that dramatically affect the power system reliability, causing interruptions of the electric supply to residential, commercial, and industrial users. Historically, wide-area disturbances have greatly affected …
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Risk Management of Cascading Failure in Composite Reliability of a Deregulated Power System with Microgrids
Due to power system deregulations, transmission expansion not keeping up with the load growth, and higher frequency of natural hazards resulting from climate change, major blackouts are becoming more frequent and are spreading over larger regions, entailing higher losses and costs to the economy …
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Reliability assessment of non-utility generation and demand-side management In composite power systems
… in the resource planning environment of electric power utilities throughout the world. The conventional generation technologies that have been the backbone of every electric utility i.e., coal, hydro, nuclear, oil and natural gas, are being re-examined to address environmental concerns and …
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Value-based planning methodology for the restructuring and expansion of an electric utility sub-transmission network
… that most of the fundamental concepts for power system reliability is well established with extensive research done in North America, and other parts of the world. Reliability worth assessment of sub-transmission networks in South Africa, which include composite networks and substation …
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Risk-based interruption cost index based on customer and interruption parameters
… competitive electricity markets do not ask for power systems with the highest possible technical perfection, but for systems with the highest possible economic efficiency. Higher economic efficiency can only be achieved when accurate and flexible analysis tools are used. Thus, the modelling of …
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