Deregulation of electric utilities has led to a new competitive regime for utilities. In traditional systems, the main objective is to estimate voltages and flows. Estimators that include the ability to determine system parameters along with system (conditions have been developed. In the evolving deregulated environment there are a host of new estimation needs. The various costs of the particip...

Many electric utilities currently have a low level of smart meter implementation on traditional distribution grids. These commonly problem associated with non-technical energy losses (NTLs) to unidentified flows consumed, but not billed in power They are usually due either the electricity theft carried out by their own customers or failures utilities’ measurement systems. Non-technical lead sig...

From an analysis of the long-run electric generating requirements of several representative utilities, it is concluded that the energy supplied by solar photovoltaic power devices will displace primarily base-load, and to a lesser extent intermediate, generating plants, even at relatively modest penetrations corresponding to several percent of the utility peak load. Attaching photovoltaic devic...

The Bush Administration has made the expansion of nuclear power generation a centerpiece of its domestic energy policy. However, the White House has not addressed the practical issue of how to overcome the nearly three-decade-long aversion among U.S. electric utilities to investing in new nuclear plants. In today's deregulating market, utilities will not build new nuclear power plants unless th...

Introduction Sulfur hexafluoride (SF 6) gas is widely used in circuit breakers and gas-insulated substations, but its use presents safety and environmental challenges when maintenance is needed. Utilities using SF 6 gas have a variety of needs, including best practices for handling SF 6 , new tools for detecting and mitigating leaks, and information on assessing gas purity. In recent years, EPR...

There are a number of state and utility policies that reduce total carbon emissions, while shifting emissions from other sectors to power plants. The most significant are policies to expand the use of electric vehicles (EVs) 1 . Increased deployment of EVs will increase electricity consumption and thus will generally increase carbon emissions by utilities but in most states will reduce total ca...

This paper discusses the Dynamic voltage restorer (DVR) operation and control for Voltage sags compensation. DVR is a series connected power electronic based device that can quickly mitigate the voltage sags in the system and restore the load voltage to the pre-fault value. Voltage sag associated with faults in transmission and distribution systems, energizing of transformers, and starting of l...

This paper summarises a study conducted by Virginia Tech for the American Lifelines Alliance (ALA) in 2005 to document interdependencies and impacts among utilities and transportation systems (lifelines) associated with the 2004 hurricane season in Florida. The greater Orange County, Florida area was chosen as the study area for the investigation, which focused primarily on the experience of ow...