by developing the level of life in societies, the need for new resources of energy becomes more important. in almost all cases, the aim is to convert one form of energy to the electrical form. with advances of technology and use of new electric and electronic devices and gadgets, the need for electrical energy is increasing and providing stable and continuous electric power becomes very importa...

As power generators around the world grapple with the challenges of the environment, deregulation, competitions and changing prices of fuels, the economics of running a future power plant are influenced significantly by the component of labour costs. These costs, from plant staff, corporate support and purchased services will affect the overall plant economics. To achieve improved efficiency an...

In many European countries, natural gas-fired power plants are considered a possibility to quickly compensate the expected shortfall in electric energy supply. Increasing gasfired generation capacity would also increase the couplings and interactions between gas and electricity systems. So far, gas power plants participate in two different markets gas and electricity. Coupling these markets by ...

As it is well known, the theory of cooperative games finds applications in many fields. The goal of this paper is to highlight some applications of cooperative games, resulting from the cooperation between the Universities of Bergamo and Krakow, and some related open problems. The paper is organized in three main sections. The first deals with the description of some specific fields where the t...

This paper investigates how the formation of larger buyers affects a supplier’s profits and, by doing so, his incentives to undertake non-contractible activities. We first identify two channels of buyer power, which allows larger buyers to obtain discounts. We subsequently examine the effects of buyer power on the supplier’s incentives and on social welfare. Contrary to some informal claims in ...

The scaling of the probability distribution of the Sao Paulo Stock Exchange index is shown to be described by a Levy stable stochastic process for the modal region of the distribution. Data refer to daily records for the 30−year period 1968−1998. The truncated Levy process is characterized by a scaling index of 1.66. Scaling power laws are also shown to be present in the mean and standard devia...

State estimation is used in power systems to estimate grid variables based on meter measurements. Unfortunately, power grids are vulnerable to cyber-attacks. Reducing cyber-attacks against state estimation is necessary to ensure power system safe and reliable operation. False data injection (FDI) is a type of cyber-attack that tampers with measurements. This paper proposes network reconfigurati...