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The approach of experimental economics is used in this paper to show that other behaviors than perfect competition and classical representations of imperfect competition can be relevant to study a power market on a constrained network. Human subjects compete on a market to maximize their profit while they are located in two different geographical areas with limited interconnector capacity. The eight...
This paper presents a software tool (SIMCMTP) that solves congestion situations and evaluates the taxes to be paid to the transmission system by market agents. SIMCMTP provides users with a set of alternative methods for cost allocation and enables the definition of specific rules, according to each market and/or situation needs. With these characteristics, SIMCMTP can be used as an operation aid...
This paper presents the technical and economical results for an Austrian case study for grid integration of distributed generation (DG). The current state of the grid segment is shown and its inability to host higher than present amounts of DG is discussed. Consequently, technical solutions to overcome this problem without reinforcing the grid are presented. Different strategies of active voltage...
The main aim of this paper is to improve the dynamic control performance of power systems, using an advanced control approach for Unified Power Flow Controllers (UPFC). The proposed controller, based on sliding mode control technique, guarantees fast response times, precise control actions and an almost completely decoupled active and reactive power control. To reduce energy storage equipment, with...
Short-term risk management is highly dependent on long-term contractual decisions previously established; risk aversion factor of the agent and short-term price forecast accuracy. Trying to give answers to that problem, this paper provides a different approach for short-term risk management on electricity markets. Based on long-term contractual decisions and making use of a price range forecast method...
In this communication a conceptual algorithm is proposed for the market coupling process in the presence of block orders. The basic idea is to use the Lagrangian relaxation to get a decomposition of the problem that emulates the necessary decentralization process. The feasibility of this procedure is analysed using a simplified model of the problem. In particular, the solution obtained in this decentralized...
The following topics are dealt with: European electricity market key policies; hedging risk in electricity markets; integration of intermittent energy sources in the grid; transmission networks in a market environment; white and green tradable certificates; climate change; the Iberian electricity market.
This paper presents an experimental investigation of individual preferences for the consumption of green electricity under alternative payment vehicles for the promotion of renewables. The experimental design involves individual choice treatments as well as public choice treatments. We study differences in subjectspsila demand behaviour for green electricity with respect to free-riding, crowding-out...
A statement of the status quo of the PV power systems in Greece, as well as their possible contribution towards the enhancement of power distribution reliability, is the scope of the present paper. Siting and installation of PV systems is performed according to a recent Greek law and by considering environmental and geographical constraints. Meteorological data about solar radiation and temperature...
When small consumers, like local authorities, try to approach the electricity world too often they face problems rather than great opportunities. Purchasing electricity in the liberalized market, trying to adhere to energy savings projects or planning new renewable energy plants are great initiatives but often with low probability of concrete realization. For this reason, the Power System Research...
This paper analyzes the relation between European natural gas storage facilities and price patterns at major trading points. Based on the theory of storage we derive testable hypothesis imposed by the non-arbitrage condition. Following the approach developed by [1], we use the risk adjusted basis as a proxy for inventory and test whether it is more variable during winter periods. Seasonal dummy variables...
This paper presents a method for market oriented reactive power expansion. In this method first ISO proposes some locations for reactive power expansion based on system requirements and operatorpsilas experiences. The investors determine the optimal locations for reactive power expansion by computing annual expansion profit of different candidates. Finally, the presented method is applied to 8-bus...
This paper addresses the economic and emission operation of fossil-fired thermal units. Electric energy markets and environmental restrictions are raison dpsilatre for companies with fossil-fired units to improve decisions, allowing for a better negotiation of their electric energy products. A rationale insight in order to design an information management system over the range of the admissible electric...
The purpose of this paper is to evaluate the MIBEL (Iberian electricity market) prices and the interconnection capacity between Portugal and Spain during the first five month of Iberian market. With the formal beginning of MIBEL on 1 of July 2007, it becomes possible for any consumer in the Iberian zone to acquire electrical energy under a free competition regime, from any producer or retailer that...
It is well known that losses at power networks constitute an undesired reality, since they increase, among others, energy inefficiency, global cost of the system and levels of CO2 emissions. In 2006, figures showed a total energy emission to networks of 49 177 GWh and aggregated losses in the Portuguese transmission and distribution networks of 3 730 GWh (8,48% referred to network energy consumption).
The European electricity markets are moving in the direction of market coupling and allocating the cross-border transmission capacity using implicit auctions. The tri-lateral power exchange combining the power exchanges of France, Belgium, and Netherlands is currently operational. German and Danish exchanges are to be coupled in June 2008. The integration of Netherlands, Belgium, France, Germany and...
In Spring 2006, the European Regulators' Group for Electricity and Gas (ERGEG), decided to launch the Regional Initiatives, towards a competitive Single European Energy Market, creating three gas and seven electricity Regional Energy Markets (REMs), namely the South-West Electricity Regional Energy Market (ERGEG SW Electricity REM), comprising the existing Iberian market, MIBEI, and France. To implement...
This paper presents the application of paraconsistent logic to the decision-making multi-criteria method AHP - analytic hierarchy process. The model uses pairwise comparison matrixes and multiple specialistspsila evaluations, to calculate the degree of inconsistency of each analyzed alternative. With this tool, decision-makers can acquire greater confidence in decisions based on feeling, subjective...
We analyze the bidding behavior in a single sided uniform auction and in a pay-as-bid auction using an experimental approach. This study focuses on the impact of the risk attitude of participating subjects. The experiments are conducted under a stable demand environment and with homogeneous groups consisting each of five participants either with a complete risk seeking or a complete risk averse attitude...
In this paper a new procedure for estimating longitudinal and cross-sectional profiles of electromagnetic fields produced by overhead transmission lines (OTL) is presented. The method is based on genetic algorithms, and uses a limited number of field measurements produced by overhead transmission lines. The procedure has been validated for different line configurations by comparison of the measured...
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