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Zonal configuration of energy market is often a consequence of political borders. However there are a few methods developed to help with zonal delimitation in respect to some measures. This paper presents the approach aiming at reduction of the loop flow effect — an element of unscheduled flows which introduces a loss of market efficiency. In order to undertake zonal partitioning, a detailed decomposition...
This paper investigates the benefits of smart loads in an industrial microgrid. Such smart loads offer the microgrid greater flexibility to regulate frequency for large fluctuating load scenarios, commonly encountered in industrial plants. A case study of stone crushing facility is analyzed when it is fed by natural gas engine driven generator sets (also known as ‘gensets’). The problem of genset...
Microgrids, as individual controllable entities that can operate either islanded from or interconnected to main power grid, have emerged as a promising solution to improving energy efficiency and resilience to disturbance. When linked together in a self-organized manner, a cluster of microgrids can significantly enhance the reliability and power quality for critical load. With this insight, we study...
In this article was examined the technical and economic potential of connecting the high voltage electricity networks of three countries with a new high voltage transmission line. The analysis investigated options and technical recommendations for the optimal configuration a 750 kV transmission corridor. In doing so, it was recognized reconnection of the corridor holds the promise of improving energy...
After the 90s, the electric power industry has undergone a considerable change, and the power markets have been restructured in many regions worldwide. The bidding of power plants is always interesting in research to ensure revenue and profit of many generation companies. This paper studies and analyzes profit of generation company in power market by bidding strategy. PowerWorld 13 simulator are chosen...
This paper primarily focuses on formulating an agent based model covering the financial and transactional aspects of deregulated Indian power markets which goes in hand with the legal system of the regulator. It proposes an information system which helps the agents of a power market to take decisions in making better bids and participate in the day ahead markets. A price forecasting engine based on...
Coordination issues associated with natural gas and electricity markets have become more acute as gas penetration in the electric generation sector has grown. This paper focuses on the debate surrounding the need for coordination of market timing - a likely major challenge for both Federal and State regulators and institutions responsible for electric reliability. This paper describes the coordination...
Paper focuses on regional market and signals to market participants regarding investments and risk management in cross-border electricity trading. Choice of additional criteria for optimal power system expansion depends on several indicators like number of congested hours, congestion costs, maximization of social welfare, complex and simple investment indicator, optimization of the distribution of...
Control power (regulating power, balancing power) is used to quickly restore the supply-demand balance in power systems. Variable renewable energy sources (VRE) such as wind and solar power are often thought to increase the reserve requirement significantly. This paper provides a comprehensive overview of balancing systems in Europe, discusses the role of VRE, and presents empirical market data from...
In deregulated power systems, maintenance of sufficient security margin and reliability level are the major tasks of the independent system operator (ISO). The provision of bids change at any time in the competitive market makes the power injections and withdrawals are time variant and are mainly determined based on economic grounds only. In order to maintain security and reliability, the adjustable...
We consider a duopolistic power market in which firms bid their offer functions while abiding by capacity constraints. Minimal cost allocation decisions and marginal cost prices are determined through the solution of two optimization problems, the first a mixed-integer linear program (the unit commitment problem) and the second a related linear program (the economic dispatch problem) that has constraints...
In this paper the authors propose a market strategy of a microgrid incorporating a virtual power plant. For exemplification, a configuration consisting of different types of distributed generators and a lumped load are considered. The aim of the virtual power plant is to maximize the profit by minimization of the total cost involved for electrical energy generation by the distributed generators that...
In this paper the authors propose a market strategy of a microgrid incorporating a virtual power plant. For exemplification, a configuration consisting of different types of distributed generators are considered. The aim of the virtual power plant is to maximize the profit by appropriate bidding strategy on the electricity market and optimal use of the sources.
In this paper we assess the incidence of strategic behavior of demand and supply units in market set ups which should enable the efficient in-feed of renewable energy sources. Therefore, a sequence of energy and reserve power auctions is modeled in an agent-based framework in order to approximately come up with the drawbacks of the different market designs. The main focus lies on the reserve power...
Smart microgrids are becoming an important concept to cope with the increasing demand of electricity and to integrate the large amounts of intermittent power sources in the electrical network. Microgrids are able to operate in grid-connected and islanded mode and present themselves to the utility network as controllable entities. For the primary control of the inverter-interfaced DG units, voltage-based...
With increasing proportion of wind power, an important concern is that of maintaining the reliability of the electric grid in the face of higher supply-side volatility. In this paper, we examine the role of risk-based penalties in developing alternate designs in which firms combine energy bids associated with uncertain real-time availability with stable reserves bids. Such a study is carried out in...
This paper proposes an optimal strategic bidding with transmission congestion using Particle Swarm Optimization with Time varying acceleration coefficients (PSO-TVAC). A bilevel programming (BLP) technique is formulated in which upper level problem represents an individual generating company (Genco) profit maximization and the lower level represents the independent system operator's (ISO) market clearing...
The utilization of renewable sources in power generation and system deregulation are two major changes the power system are undertaking. Different evaluation models are needed in order to incorporate renewable generation in the existing power system analysis. In deregulated power system, the impacts of renewable generation penetration are not only on the physical operation, but also on economic operation...
Under the deregulation of generation market, all distributed generators will participate in electric power bidding; therefore purchase cost problem has been getting more attention of power companies. However, under the competition principle, they can purchase energy from several of power generation companies, so there exist continuous and integral variables in purchase cost model. It is difficult...
One of the main objectives of deregulation has been to achieve more efficient power systems. Exercise of market power can significantly increase prices in the power market thereby reducing the efficiency. This makes it important for regulatory bodies to survey and intervene if the market is malfunctioning. In hydropower systems this is extra difficult to reveal because the resource for the supply...
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