The paper presents a concept of utilizing wind farms in a process of voltage control in 110 kV distribution grids. It has been shown that when properly controlled, a wind farm can assist in decreasing voltage variations in a HV grid caused by daily load variations.It has been also shown that stabilization of HV grid voltage caused by the influence of a wind farm is reflected with decreased freq...

As the Electric Distribution industry enters the Smart Grid era, it is deploying a variety of new technologies (including distributed energy resources) and communications infrastructure to enhance the performance of the distribution grid, improve customer satisfaction and reduce the carbon footprint. On the one hand, these new Smart Grid investments look as though they will pay off as customers...

We introduce a protocol with a reconfigurable filter system to create non-overlapping single loops in the smart power grid for the realization of the Kirchhoff-Law-Johnson-(like)-Noise secure key distribution system. The protocol is valid for one-dimensional radial networks (chain-like power line) which are typical of the electricity distribution network between the utility and the customer. Th...

Few years ago Power Systems consisted mainly of large generation plants supplying distant loads through the utility grids. The last years, though, a number of factors lead this structure to change gradually. Small generators of some MW have been already dispersed (DGs) throughout the transmission grid. The distribution of smaller generation units throughout the distribution system as near as po...

The Smart Grid concept is conceived as a means to optimize the operation and to improve the reliability of the electric delivery system. As environmental concerns and energy consumption continue to increase, utilities are looking at cost effective strategies for improved network operation and consumer consumption. Smart Grid is a collection of next generation power delivery concepts that includ...

Quantum Key Distribution (QKD) is a secure key distribution technology, which provides information theoretic or unconditional security. BBN DARPA quantum network and SECOQC network of secrets are the examples of such networks. Research is also in progress for the integration of QKD with the protocols in different layers of OSI model. Integration of QKD in point-to-point protocol (PPP) OSI layer...

Load balancing is a technique for equal and fair distribution of load on resources and maximizing their performance as well as reducing the overall execution time. However, meeting all of these goals in a single algorithm is not possible due to their inherent conflict, so some of the features must be given priority based on requirements and objectives of the system and the desired algorithm smu...

This paper presents an improved grid voltage control strategy for wind farms with doubly-fed induction generators (DFIGs) connected to distribution networks based on an analysis of the operation limits of DFIG systems. A modified reactive power limit calculation method in different operation states is proposed and a reactive power control strategy during grid voltage dips/rises is further discu...

This paper describes a new fast hybrid adaptive grid generation technique for arbitrary twodimensional domains. This technique is based on a Cartesian background grid with square elements and quadtree decomposition. A new algorithm is introduced for the distribution of boundary points based on the curvature of the domain boundaries. The quadtree decomposition is governed either by the distribut...