The recent handling over of the assets of Power Holding Company of Nigeria (PHCN) successor companies to the core investors was a major landmark in the reform of the electric power sector in Nigeria. However, the emergence of the different autonomous utilities for running the deregulated electricity market has great consequent for the day-to-day planning and operation of the power grid. There i...

In this paper, the new short-term problems that are faced by a generation company in a deregulated electricity market are addressed and a optimization algorithm is proposed. Our model of the spot market explicitly represents the price of electricity as an uncertain exogenous variable. We consider a very complex problem of hydrothermal optimization with pumped-storage plants, so the problem deal...

The recent rapid uptake of residential solar photovoltaic (PV) installations provides many challenges for electricity distribution networks designed for one-way power flow from the distribution company to the residential customer. In particular, for grid-connected installations, intermittent generation as well as large amounts of generation during low load periods can lead to a degradation of p...

The National Grid Company Plc. is responsible for the maintenance of the high voltage electricity transmission network in England and Wales. It must plan maintenance so as to minimize costs taking into account: location and size of demand, generator capacities and availabilities, electricity carrying capacity of the remainder of the network, i.e. that part not undergoing maintenance. Previous w...

The National Grid Company Plc. is responsible for the maintenance of the high voltage electricity transmission network in England and Wales. It must plan maintenance so as to minimise costs taking into account: • location and size of demand, • generator capacities and availability’s, • electricity carrying capacity of the remainder of the network, i.e. that part not undergoing maintenance. Prev...

The Regional Greenhouse Gas Initiative (RGGI) is an effort by nine Northeast and Mid-Atlantic states to develop a regional, mandatory, market-based cap-and-trade program to reduce greenhouse gas (GHG) emissions from the electricity sector. The initiative is expected to lead to an increase in the price of electricity in the RGGI region and beyond. The implications of these changes for the value ...

The objective of this study was to describe the health status of electricity workers exposed to electromagnetic fields during their job. Two groups of exposed workers were studied from 1978 to 1993: the live line workers (n = 121) and the substation workers (n = 232.7) of the French Electricity Company (EDF). A control group was randomly selected from all the company non-management male employe...

The National Grid Company Plc. is responsible for the maintenance of the high voltage electricity transmission network in England and Wales. It must plan maintenance so as to minimize costs taking into account: location and size of demand, generator capacities and availabilities, electricity carrying capacity of the remainder of the network, i.e. that part not undergoing maintenance. Previous w...

Hidden Markov Models (HMM) describe the relationship between an observed process {Yn}n>0 and an underlying and unobserved process {Xn}n≥0, that is assumed to be a Markov chain and whose realization Xk governs the distribution of the corresponding Yk (Cappé et al., 2005). The Italian regulatory mechanism for quality of service in electricity distribution applies penalties and rewards to distribu...