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Quantifying the impact of a given bilateral transaction on transmission circuits is exceedingly important for the proper allocation of transmission charges and system losses to individual transactions as well as the acquisition of transmission access rights for cross-border trades. This paper presents an approach to attribute the MW flows in transmission network branches to individual bilateral transactions...
The growing need for competition in the utility and energy markets and South African government's policy on the inclusion of Distributed Generation otherwise known as Embedded generation (EG)s in the future generation mix in South Africa will potentially mean that the numbers of generators being connected within the utility distribution networks will increase significantly. In March, 2009, the National...
Given the UK Government targets on renewables, significant amount of wind generation is expected to be connected in Scotland. Delivering these targets effectively will require not only an appropriate investment in electricity infrastructure, but also fundamental changes in the philosophy of network operation and development to enhance the utilization of the existing networks. This in turn will requires...
The MicroGrid concept using renewable energy sources is a building block towards the future energy networks for long-term viable solution of energy needs. The focus of the paper is centred around the encountered and foreseen issues, enabling technologies and economics for encouraging the deployment of MicroGrids in India. This paper presents state-of-the-art issues and feasible solutions associated...
This paper studies the problem of congestion management model that based on quoted price adjustment in the real-time electricity markets, dealing with two cases : opening the generator side only and opening the generator side and load side simultaneously, introduces the congestion factor and establishes a novel optimal congestion cost model for each case. Furthermore based on the max-mini theory,...
One of the key problems of energy transmission system in an independent environment refers to necessity to establish a cost for system services on nondiscriminatory bases. The prices must to be simple and transparent. A properly established cost provides economical signals for short-term and long-term recovery current expenses and for a fair cost allocation for participants. This paper presents allocation...
The European Union has committed itself to sourcing 20% of its energy from renewables by 2020. Britain's excellent wind resource is expected to make a significant contribution to this target, not least from Scotland and the north of England. However, exploitation of this resource requires appropriate and timely development of the GB electricity transmission system. This depends on appropriate market...
Open access is an essential feature in the deregulated power system. It permits all the generators to transmit power into the system. Depending upon the transmission network parameters, generator responses to the variation in loads differ from each other. To know these responses is important from various aspects such as for determination of nodal prices which will be needed in charging differential...
This paper presents a detailed electricity market model for analyzing the price development in the Italian electricity market under varying degrees of competitiveness in the market. The proposed model is more realistic than the models proposed for the Italian market by other studies, as it can be used when price elasticity of electricity demand is zero (the short term electricity demand in Italy is...
Summary form only given. This paper presents an effective method of congestion management in power systems. Congestions or overloads in transmission network are alleviated by generation rescheduling and/or load shedding of participating generators and loads. The two conflicting objectives (1) alleviation of overload and (2) minimization of cost of operation are optimized to provide Pareto-optimal...
The UK Government is working towards a target of providing 10 % of UK electricity from renewable sources by 2010 with the aspiration that this will rise to 20% by 2020. However, the connection of any wind farm to the grid must comply with the Grid Code connection requirements. One of the requirements is that the wind farm must have the capabilities to operate within certain reactive power and voltage...
In this paper, the challenges of interconnecting large wind power penetration levels to the electrical power network are discussed based on some key case studies. Key planning considerations for interconnecting large-scale wind projects are discussed. For high levels of wind power penetration advanced wind farm technologies, energy storage, FACTS or HVDC transmission technologies may be required....
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