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The increase in renewable energy generators introduced into the electricity grid is putting pressure on its stability and management as predictions of renewable energy sources cannot be accurate or fully controlled. This, with the additional pressure of fluctuations in demand, presents a problem more complex than the current methods of controlling electricity distribution were designed for. A global...
This research examines optimal operation of microgrid systems. Microgrids are disaggregated from main transmission grid. Microgrids are able to integrate distributed renewable energy, take advantage of waste heat, provide higher power reliability, reduce electricity transmission loss, and decrease greenhouse gas emissions. The study considers solar power, wind power, biomass power, gas turbine, fuel...
Large capacity of wind generation is expected to be installed across Great Britain by 2020. Wind generation is variable, therefore fast ramping generation plants will be required to balance electricity demand. Gas-fired generation plants will most likely be used to compensate for wind generation variability because of their ramping capability and large installed generation capacity. This will cause...
The availability today of electricity in Oil & Gas application is a key factor in process production, evaluation and maintainability. The use of IEC61850, a mature communications technology, as a toolbox to develop applications in an open environment is now possible beyond what was permitted by the former generation of communication protocols. The benefits of IEC 61850 have become more apparent...
With increasing use of intermittent renewable energy sources, the importance of large scale energy storage has become apparent. This paper identifies a novel method of using large buoyant elements to store energy deep under the surface of the ocean and the research plan to move it towards commercialization. A prototype design and test methodology is introduced as well as a large scale optimization...
The whole electric power system includes four aspects: generation, transmission, distribution and electricity users. Those four aspects all need maintenance to enhance system reliability and energy efficiency. Under deregulated electricity market, generating unit maintenance scheduling arrangements are very different with the traditional electric power system. In the tradition electric power industry,...
This paper describes a Virtual Power Plant, containing aggregated micro-generation sources and Electric Vehicles as mobile loads. A UK generic distribution network is used to build a VPP comprising several micro-grids. EV and micro-generation penetration levels are projected for the year 2030, based on previous studies. A multi time period optimization is performed to minimise carbon emissions and...
Increasing energy prices and the greenhouse effect lead to more awareness of energy efficiency of electricity supply. During the last years, a lot of domestic technologies have been developed to improve this efficiency. These technologies on their own already improve the efficiency, but more can be gained by a combined management. Multiple optimization objectives can be used to improve the efficiency,...
This paper discusses issue of maximizing profit while operating an industrial power plant under variable spot price (SP) of electricity and load demand (LD). Such a plant can be connected to a power grid by a tie line on which power can flow in both directions. In a Liberalised Electricity Environment (LEE) an industrial plant manager determines least costly operating points for its own generators...
In electric power market, the research of best bidding price is an important study, in which the calculation and description of node price is the key issue. Based on the highly effective ant colony algorithm, this paper proposes a methodology of best bidding for solving the optimal price model of the electric power market. We use the random global search capability of ant colony algorithm to deal...
Under a market environments, there are a lot of uncertainties, such as fluctuation of power prices, shortage of fuel supply and rising of fuel prices, which make generators encounter serious profits loss risk. For stabilizing profits, it is necessary for generators to establish an efficient and optimal risk management technique mix. By adopting the real option, this paper establishes a real option...
In a restructured power system, the problem of maintenance scheduling is different from the traditional centralized power system. This paper is demonstrated how GENCOs (generating companies) in a competitive environment prepare the maintenance schedule of their facilities. Taking into account that in the new structure the main purposes of GENCOs are selling electricity as much as possible and making...
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