The effective collection of fly ash in pulverized coal-fired plants which utilize electrostatic precipitators depends primarily on the effect of coal sulfur content, the gas temperature, and the carbonaceous content of the fly ash on the precipitator electrical power input. While the majority of precipitator installations are effective fly ash collectors, an abnormal change in any of the above ...

The paper presents a probabilistic fault arc reignition model for MV distribution networks. The model has been developed and implemented in the EMTP program, in order to evaluate the possible benefits of enlarging the time delay before the first fast reclosure, in terms of reducing the probability of fault reignition and, thus, avoiding longer interruptions. The application of the model in simu...

The front cover shows ABB serving the cement manufacturing industry, which it has done since 1961 with turnkey installations, electrical equipment and automation systems. In 1990, ABB recognised the MES (Manufacturing Execution Systems) business area as a natural extension to its technology portfolio. Since then, ABB has provided added value solutions that are independent from the installed pro...

The mechanical design considerations are discussed with respect to the currently installed X-13 and future X-29 MGU. Comparisons to the previous 2 generations of variable small-gap undulator evolution in the NSLS X-ray ring are made and design improvements noted. The design requirements and mechanical difficulties for holding, positioning and driving the magnetic arrays are explored. Structural...

From a safety and security point of view, the electrical energy distribution infrastructure needs to be protected.. In this paper solutions to increase the safety aspects of substation components, power lines and power transformers are discussed. Also security solutions related to perimeter intrusion detection in substations and remote surveillance of power transformer installations are introdu...

Nowadays, the active filters represent a viable alternative for controlling harmonic levels in industrial consumers’ electrical installations. It must be noted the availability of many different types of filter configurations that can be used but there is no standard method for rating the active filters. This paper focuses on describing the shunt active filter structure and design. The theoreti...

A significant development of the photovoltaic market in European Union has been observed recently. This is mainly due to adopted climate policy and technology, resulting increased availability for consumers at lower prices. In long run, installed PV capacity associated with an amount waste generated end life. Since this belongs group WEEE (waste electrical electronic equipment) waste, it subjec...