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With an increasing wind power penetration, more generation intermittency will be added to the power system, requiring higher flexibility and thus more regulating reserves. Based on high resolution numerical weather prediction models and wind speed measurements, the actual and the forecasted wind power production is simulated for five scenarios covering the years 2010, 2015 and 2020. These scenarios...
Although deregulation of power systems in most of the cases is considered as a worthy progress, however, for the operation and maintenance of this brand new environment, the associated new issues have to be clarified and solved. In this paper, a new method for pricing the transmission loss is proposed. The proposed method is fundamentally based on zero cash balance of the market. The idea of this...
With the rising of energy prices and greenhouse gas emissions, new and renewable energy demand is increasingly urgent. The development of wind power is the fastest new and renewable energy area. Large-scale application and natural characteristics of wind power have directed that wind power market must take a diverse development path. Non-grid connected wind power system development is the diversified...
Departing from the main query of how to re-design the existing RES-E incentive model in view of a tighter integration with the Iberian Electricity Market, a restructured proposal of the current feed-in tariff remuneration model is presented. The paper begins with the existing energy policy context in Portugal, in section II. A summary of the most recent changes in the Portuguese electricity systems...
This paper presents an analysis of the behavior of an electricity market equilibrium model under a scenario with Large-Scale penetration of Wind Energy. The objective is to assess the robustness of this kind of models under the new context in which wind power is becoming increasingly important. In the model, different load level specifications are implemented as well as different scenarios of hydro...
With the increased use of wind energy several Transmission System Operators (TSO) have increasing difficulties for congestion forecasting due to the unpredictable nature of the energy source. To maintain the state of the system within acceptable and secure operating conditions, the TSOs require the curtailment of the production of generators to avoid local congestion on the power grid. These actions...
The introduction of massive amounts of intermittent wind power raises challenges for the proper balancing of the power system. For a number of reasons combined cycle gas turbines are the back-up technology of consequence. Therefore, the flexibility needs of the power generation market are actually transferred to the gas market. A first step is proposed towards a model to quantitatively study this...
If a wind power producer must pay the costs of imbalances, the question arises of what is the optimal bid, given the market rules and the statistical properties of the wind forecasts and the imbalance prices. In this paper we derive optimal wind power bids for two sets of market rules, reflecting previous and new rules in the Nordic power system. The optimal bids are based on the evaluation of a large...
After the Energy Bill was announced in 2005, a transition of national energy system from hydrocarbon to hydrogen had been envisioned. However, safe and convenient refueling and widespread availability of hydrogen from various energy sources are the prerequisite for the development of hydrogen economy. This paper focuses on the design of a hydrogen filling station with on-site hydrogen production by...
The aim of the paper is to study the optimal participation of wind energy in adjustment markets in order to increase the wind producer revenues, through a stochastic optimization process, which considers the uncertainty of the random variables involved, namely short-term wind power prediction, intraday price prediction and imbalance price. A new modeling of the behavior of up and down imbalance prices...
Wind power forecast uncertainty raises concerns of the impact of wind power on power system and electricity market operations. The analysis presented in this paper uses an optimal power flow (OPF) model in a Monte Carlo Simulation (MCS) framework to estimate the cost impacts from the uncertainty in windfarm output. Using various regional load levels, and assumptions on the costs for providing balancing...
Through the end of the 20th century and beginning of 21st century, the Spanish policy-makers have had a strong commitment to the development of renewable energies and clean power technologies, mainly related with wind power and combined cycles. This commitment has involved several technical, regulatory and operational challenges, but perhaps the most critical of these has been the development of a...
The Danish power system is characterized by a high share of wind power production as well as production from local scale combined heat and power units, both called dispersed generation (DG). Today, with respect to market terms, these units work together as virtual power plants. Currently also the technical aspects are further developed. According to the Danish Governmental Strategy renewable energy-mainly...
The Romanian National Energy strategy is requesting that renewables quota to reach 33% of consumption in 2010 and 38% in 2020. One of the most challenging issues facing wind energy today is its maximal and reliable integration in the power markets. Due to transport/distribution grid lack of flexibility and high level of concentration in Dobrogea region of large wind developments the access to the...
This paper presents a decision-making tool for investment in a wind energy plant using a real options approach. In the first part of the work, the volatilities of market prices and wind regimes are obtained from geometric Brownian motion with mean reversion (GBM-MR) and Weibull models, respectively. From these and other values, such as investment and maintenance costs, the net present value (NPV)...
In this study, energy demand structure and the latest growth trends, energy production using different resources, distribution and integration structures, investment, support and taxing structures and characteristics of electricity industry of Turkey are presented, integration of renewables in electricity markets are explicated and the reasons of a probable near future energy shortage are analyzed...
The aim of the paper is to study the optimal participation of wind energy in day ahead and intraday markets. Due to the intermittent nature and the low predictability of wind power, this participation may imply large deviations from the initial schedule, which lead to a cost that has to be borne by the wind farm owner. By means of short term wind power prediction programs, these losses may be reduced,...
As the amounts of installed wind power increases in the power system, the required real-time balancing quantities increases because of the unpredictability of wind power production. Real-time balancing power is usually provided through various market solutions and thus, the prices on such markets will be affected by the increase in wind power production. Consequently, there exist a need for planning...
Romania, being European Community member, directed its national energetic program to increase the share of renewable energy sources and the efficiency of power generation by cogeneration of heat and power. Targets are set and declared to the European Commission: in 2010 33% of the total consumes to be guaranteed from renewable sources and 35% in 2015, including the hydro production. In conditions...
This paper presents different technical possibilities to balance the short term production and consumption of electricity in Finland. Based on several wind measurements in Finland, the amount of wind power variation was calculated for a scenario with 2000 MW wind power in Finland. Additionally, an estimate of the reserves needed for wind power and an analysis of the regulating power market (balancing...
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