The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper introduces a concept of real-time optimization of hybrid fuel-cell power plants as an alternative distributed generation source that improves the power quality and reliability of the power grid. One of the most important issues of plant operation is the optimal control of the power plant, leading to significant economic and environmental benefits. As a commercialized fuel cell technology,...
The climate of Tunisia, located in North Africa, is favorable to the use of solar energy. This location exhibits some of the highest insolation levels on earth making it an attractive location for photovoltaic (PV) power applications. In comparison to grid power, PV power is still not competitive. However, there are many small, remote locations in Tunisia which rely on diesel generators for electric...
The UK Government plans that offshore wind power should play a major part in meeting the UK's renewable energy and carbon emission targets by 2020. The pioneer UK Round 1 offshore wind farm projects, based on sites let in 2001, were supported by the UK Department of Trade and Industry's “Offshore Wind Capital Grants Scheme”. This paper reviews the economic and operational performances of those farms...
Asymmetric information in the electricity market creates incentive for customer aggregators (ESCOs, EMCOs, LSEs, etc.) to bid strategically as new information arrives. Such companies are pooling demand to provide enhanced services to customers. Since such demand pooling companies are not defined generically, all types of demand pooling companies will be termed demand serving company (DSC) to not confuse...
The inherent variability and uncertainty of wind power generation is a major issue for countries attempting to harness large quantities of wind-based renewable energy. Such properties of wind make optimal balancing of demand and generation a much more complex task. Clearly the flexibility of thermal plant in the electrical power system is of key importance, especially in smaller systems with high...
This paper presents a new algorithm, Function Optimisation by Reinforcement Learning (FORL), to solve large-scale and complex function optimisation problems, in particular for those in a high-dimensional space. FORL undertakes the dimensional search in sequence, in contrast to evolutionary algorithms (EAs) which are based on the population-based search, and has the ability of memory of history incorporated...
This paper presents a model which can be used to simulate the load acceptance behavior of a diesel generating set. Unlike traditional thermal plants, generating sets (gen-sets) are often expected to undergo large rapid changes in load. A gen-set with a low inertia will naturally be more susceptible to changes in speed. This problem is compounded with the introduction of turbocharged engines. Although...
Economic, technology and environmental incentives are changing the features of electricity generation and transmission. Centralized power systems are giving way to local scale distributed generations. At present, there is a need to assess the effects of large numbers of distributed generators and short-term storage in Microgrid. To accommodate the high demand of renewable energy and the environment...
Climate change initiatives proposed by governments and industry organizations have the potential for reallocating trillions of dollars, affecting the way energy is used. The aggressiveness or pace of mandates/targets could lead to different near-term and long-term outcomes, as well as diverse supply-demand for fuel commodities, technology deployments, and cost considerations.
This paper develops a risk constrained expected profit maximization model for a generating station operating under Availability Based Tariff (ABT) regime in India. The decision strategy of the generator is to optimize the availability target trajectory for a yearly time span in appropriate time intervals. The model considers stochastic behaviour of generating units' outage, Unscheduled Interchange...
This paper presents a general framework for Microgrids control based on Multi Agent System Technology. The proposed architecture is capable to integrate several functionalities, adaptable to the complexity and the size of the Microgrid. To achieve this, the idea of layered learning is used, where the various controls and actions of the agents are grouped depending on their effect on the environment...
An offshore power transmission grid in Northern Europe has become a serious and important topic among the power industry, the power transmission sector, national governments and the European Commission. The OffshoreGrid project will provide policy recommendations for the political process towards such a grid in pursuing the efficient integration of renewables, the integration of market regions, security...
This paper presents the use of Pareto optimization techniques that was previously analyzed with small scale power plant models where results could be verified analytically. Further research has been conducted into the use of applying these techniques to large scale models and analyzing performance. These approaches have been verified to scale well to larger applications. Through the use of multi-objective...
This paper discusses investment strategies in a microgrid system consisting of cogeneration system and renewable power generation under uncertainty in the natural gas price. Although incentives for introducing distributed energy system increase these days, volatile natural gas prices make its investment in gas fuel distributed generation systems risky. Therefore, it is important to evaluate the risk...
This paper describes an undergraduate or graduate level student project that involves the design of an energy-efficient standalone distributed generation system integrating existing fossil fuel based energy sources with renewable energy sources and smart grid technologies for off-grid communities. One such application is the development of stand-alone electric power sources for Native American villages...
As power systems evolve to incorporate greater penetrations of variable renewables, the demand for flexibility within the system is increased. Combined Cycle Gas Turbines (CCGTs) are traditionally considered as inflexible units but those which incorporate a steam bypass stack are capable of open-cycle operation. Facilitating these units to operate in open-cycle mode is shown to improve system reliability...
This paper proposes a new framework for the power system unit commitment process, incorporating generation flexibility requirements and environmental constraints into the existing unit commitment algorithm. The generation flexibility requirements are to address the uncertainty and variability associated with large amounts of intermittent resources as well as with load, which cause real-time balancing...
Fixed demands for electricity are incorporated into a game theoretic model of strategic generators who are supplied by a fuel transportation network and produce power for a congested electricity transportation network governed by an independent system operator. Some counter-intuitive effects on measures of market power result from reducing the proportion of demands that are fixed rather than price-sensitive...
This paper investigates the performance characteristics of rapeseed methyl ester, EN 14214 biodiesel, when used for electrical generation in compression ignition engines. The work was inspired by the need to replace fossil diesel fuel with a sustainable low carbon alternative while maintaining generator performance, power quality and compliance with ISO 8528-5. A 50 kVA Perkins diesel engine generator...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.