Electric power

About: Electric power is a research topic. Over the lifetime, 73036 publications have been published within this topic receiving 636991 citations.

Ultra-wideband communication through local power lines

Abstract: A system, method and apparatus structured to transmit a plurality of ultra-wideband pulses through an electric power medium (305) are provided. One embodiment of the method comprises an ultra-wideband transmitter (302) structured to transmit the plurality of ultra-wideband pulses through the electric power medium (305) and an ultra-wideband receiver (302) structured to receive the plurality of ultra-wideband pulses from the electric power medium (305). Another embodiment of the present invention comprises a power supply that provides ultra-wideband communications to devices that obtain power from the power supply.

Cost of Power Interruptions to Electricity Consumers in the United States (U.S.)

Abstract: The massive electric power blackout in the northeastern U.S. and Canada on August 14-15, 2003 catalyzed discussions about modernizing the U.S. electricity grid. Industry sources suggested that investments of $50 to $100 billion would be needed. This work seeks to better understand an important piece of information that has been missing from these discussions: What do power interruptions and fluctuations in power quality (power-quality events) cost electricity consumers? We developed a bottom-up approach for assessing the cost to U.S. electricity consumers of power interruptions and power-quality events (referred to collectively as reliability events ). The approach can be used to help assess the potential benefits of investments in improving the reliability of the grid. We developed a new estimate based on publicly available information, and assessed how uncertainties in these data affect this estimate using sensitivity analysis.

Save Watts in Your Grid: Green Strategies for Energy-Aware Framework in Large Scale Distributed Systems

Abstract: While an extensive set of research project deals with the saving power problem of electronic devices powered by electric battery, few have interest in large scale distributed systems permanently plugged in the wall socket. However, a rapid study shows that each computer, member of a distributed system platform, consume a substantial quantity of power especially when those resources are idle. Today, given the number of processing resources involved in large scale computing infrastructure, we are convinced that we can save a lot of electric power by applying what we called green policies. Those policies, introduced in this article, propose to alternatively switch On and Off computer nodes in a clever way.

Modular power distribution unit, module for the power distribution unit, and method of using the same

Abstract: A modular power distribution unit (PDU) for supplying electric power to attached equipment in environments such as data centers, computer rooms, and communication centers, where power requirements for attached equipment may vary. The power distribution unit includes a frame and one or more user-replaceable power modules, which fit into slots in the frame. Each power module provides one of more plug receptacles for attaching equipment to provide power thereto. The power modules are available in a variety of receptacle types, receptacle numbers, and power rating configurations to accommodate various equipment in a particular environment, as needed. The frame includes an internal connector panel for distributing power from a power source to the power modules when they are inserted in the frame. The power modules may be removed, installed, and interchanged in the frame without interrupting power to other power modules or to the power distribution unit. In an alternative embodiment, the power distribution unit includes a control unit for receiving remote control signals to provide power sequencing or individual control of the power modules. In still another alternative embodiment, electronic entertainment products such as VCRs and DVDs may be adapted use in countries having different electrical source voltages, frequencies and plug types. The product includes a slot for accepting a power module adapted for receiving and converting power from a country's domestic electric power system for use in powering the product. The power module includes a receptacle for the country of use.