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Network reconfiguration problem has been studied in the literature for more than 20 years. In this study, we extend the problem with one of the today's challenges: integration of renewables at the distribution system level. First, the effect of network reconfiguration on the maximum service capability is examined in a case study. Next, an Optimal Power Flow problem in the form of Semi-Definite Programming...
A model to obtain the optimal allocation and timing of renewable distributed generation under uncertainty is proposed as part of distribution expansion planning. The problem is formulated using a stochastic two-stage multiperiod mixed-integer linear programming (MILP) model, where investment decisions are done in the first stage and scenario-dependent operation variables are solved in the second stage...
The increasing penetration of distributed energy resources (DERs) in the distribution grid, in combination with the liberalization of the electricity markets, introduces small-scale electricity producers in a market architecture designed for large-scale power plants. This work examines a double-auction electricity market for a residential area, designed to facilitate the electricity exchange between...
Distributed Generation (DG) in the form of Renewable Power Generation systems are currently preferred for clean power generation. However due to their intermittent and unpredictable nature, energy storage needs to be used to ensure that the load is met at all times. There are many possible options for energy storage and the most popular and technologically matured option, batteries, is the subject...
In Japan, CHP has been installed for energy saving for decades. Recently renewable energies such as photovoltaic cells and wind power are being installed with increasing speed. But such generators may influence to the stability of the electric system. To enhance the introduction of renewable energies, we have to reduce the influence to the stability of the electric system. It is important to make...
There is a growing consensus that the great risks arising from climate change require strong cuts of greenhouse gas emissions and that actions are urgently needed. The current economic crisis force policy makers to reconsider their policies and to introduce reforms that foster enhanced efficiency and more sustainable long term growth. Within this context, this paper assesses, by means of a scenario...
In Japan, three national field tests of microgrid were started in 2005. These projects are trying to demonstrate technical feasibility of microgrids with renewable energy, but economic and environmental benefits have not been shown yet. The economic evaluation of the microgrids is still challenging. This paper presents a methodology for economic design and optimal operation of microgrids with renewable...
A framework for establishing neighborhood based integrated energy systems, which are highly but not solely dependant on renewable energy is presented. Integrated energy systems is a whole system concept. It includes knowledge, design, analysis, construction, and long term utilization of a community's electrical, mechanical, thermal, educational, and governing systems at all levels, individual homes,...
The framework programmes (FP) for research is the main EU funding mechanism for research, technological development and demonstration. With a budget of almost one billion Euros, projects in the area of energy from the previous FP5 (1998-2002) are well advanced, with many entering the critical phase of exploiting and disseminating their results. The total expenditure on European RTD projects for the...
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