4,019,034 research outputs found
Author, Geraldine Brooks at the National Library of Australia for the 2009 Ray Mathew Lecture, Canberra, 23 October 2009 [picture] /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author, Geraldine Brooks during her visit to the National Library of Australia for the 2009 Ray Mathew Lecture, Canberra, 23 October 2009.; Acquired in digital format; access copy available online.; Mode of access: Internet via World Wide Web.; Photographed by a staff member of the National Library of Australia
Geothermal Power Generation as Related to Resource Requirements
No full textFor the past several years geothermal exploratory work has been conducted in northern Nevada. In conjunction with that effort a proposed 55-MW steam geothermal power plant was considered for initial installation in one of the fields being developed. The characteristics of the geothermal fields under consideration were not firm, with data indicating widely varying downhole temperatures. Thus, neither the resource nor the plant operating conditions could be set. To assist both the ultimate user of the resource, the utility, and the developer of the geothermal field, a series of parametric sensitivity studies were conducted for the initial evaluation of a field vis-a-vis the power plant. Using downhole temperature as the variable, the amount of brine, brine requirements/kWh, and pounds brine/pound of steam to the turbine were ascertained. This was done over a range of downhole temperatures of from 350F to 475F.
The studies illustrate the total interdependence of the geothermal resource and its associated power plant. The selection of geothermal steam power plant design conditions must be related to the field in which the plant is located. The results of the work have proven to be valuable in two major respects: (1) to determine the production required of a particular geothermal field to meet electrical generation output and (2) as field characteristics become firm, operating conditions can be defined for the associated power plant
Portrait of Robert Dessaix in the National Library of Australia bookshop, Canberra, 10 October 2008, 1 [picture] /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author Robert Dessaix in the National Library of Australia bookshop, Canberra, 10 October 2008.; Acquired in digital format; access copy available online.; Mode of access: Internet via World Wide Web.; Photographed by a staff member of the National Library of Australia
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1996 Wholesale Power and Transmission Rate Schedules.
No full textBonneville Power Administration`s (BPA) 1996 Wholesale Power Rate Schedules, 1996 Ancillary Products and Services Rate Schedule, 1996 Transmission Rate Schedules, and General Rate Schedule Provisions, contained herein, were approved on an interim basis effective October 1, 1996. These rate schedules and provisions were approved by the Federal Energy Regulatory Commission (FERC), United States Department of Energy, in September 1996 (Docket Nos EF96-2011-000 and EF96f-2021-000). These rate schedules and General Rate Schedule Provisions were approved on a final basis by the FERC July 30, 1997, in Dept. of Energy--Bonneville Power Administration, Docket Nos. EF96-2011-000 and EF96-2021-000. Except as noted elsewhere, these 1996 rate schedules and provisions supersede BPA`s Wholesale Power Rate Schedules and General Rate Schedule Provisions, and Transmission Rate Schedules and General Transmission Rate Schedule Provisions, effective October 1, 1995. These rate schedules and general rate schedule provisions include all errata
Portrait of Robert Dessaix in the National Library of Australia bookshop, Canberra, 10 October 2008, 2 [picture] /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author Robert Dessaix in the National Library of Australia bookshop, Canberra, 10 October 2008.; Acquired in digital format; access copy available online.; Mode of access: Internet via World Wide Web.; Photographed by a staff member of the National Library of Australia
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Living and Working Safely Around High-Voltage Power Lines.
No full textHigh-voltage transmission lines can be just as safe as the electrical wiring in the homes--or just as dangerous. The crucial factor is ourselves: they must learn to behave safely around them. This booklet is a basic safety guide for those who live and work around power lines. It deals primarily with nuisance shocks due to induced voltages, and with potential electric shock hazards from contact with high-voltage lines. References on possible long-term biological effects of transmission lines are shown. In preparing this booklet, the Bonneville Power Administration has drawn on more than 50 years of experience with high-voltage transmission. BPA operates one of the world`s largest networks of long-distance, high-voltage lines. This system has more than 400 substations and about 15,000 miles of transmission lines, almost 4,400 miles of which are operated at 500,000 volts
Improved system operations with high penetration of wind power : a dialog between academia and industry - Ireland
No full textPanel session submission for the IEEE Power and Energy Society (PES) 2010 General Meeting, July 25-29 2010, Minneapolis, MinnesotaThis is a submission to a panel session at the 2010
IEEE PES General Meeting. It discusses effective collaboration
between academia and industry.Science Foundation IrelandConference websitehttp://ewh.ieee.org/conf/pesgm10/Charles Parsons Energy Research AwardsCharles Parso
Siting new energy infrastructure in Ohio a guidance document.
No full textTitle from cover of PDF document (viewed Apr. 19, 2006).; "February 2005."; Harvested from the web on 4/20/06Introduction -- Power siting in Ohio: Ohio Power Siting Board ; Siting process in Ohio -- Incentives: Ohio Air Quality Development Authority ; Ohio Department of Development ; Ohio Department of Taxation -- Permits: Air ; Water ; Other
Power Conditioning and Control Applications for Energy Conservation
No full textElectrical power conditioning and control (PCC) systems are finding cost effective applications in AC motor drives, lamp ballasts and power supplies. Substantial system efficiency improvements are being realized when the appropriate PCC system is coupled to an existing process. Improvements made in fabricating power semiconductors, increased power handling capabilities and advanced circuit designs will continue to reduce the cost per watt of service. Three generic PCC systems were identified as possessing significant potential for energy conserving applications: switching power supplies, high frequency ballasts and AC synthesizers. On a national basis, it was estimated that industry could conserve 8.5, 42.2, 109.7 terawatt-hrs. (1012 watt-hrs.) of electricity in the years 1985, 1990, and 2000 respectively, based on conservative penetration scenarios
Battery Storage System as Power Unbalance Redistributor in Distribution Grids Based on Three Legs Four Wire Voltage Source Converter
No full textThis article discusses the application of battery energy storage systems (BESSs) as power redistributors in three-phase distribution grids as an add-on functionality to typical BESS applications, such as congestion management and energy arbitrage. Combining those ancillary services into a single power unit is not yet performed in practice but may constitute an emerging business opportunity to increase the BESS revenues. The unbalanced operation of the BESS voltage source converter (VSC) leads to the circulation of low-frequency current harmonics in the dc-link through the capacitors and the battery cells. Therefore, it is particularly interesting whether relatively large 50- and 100-Hz currents can safely circulate within these components. Analytical modeling and design guidelines for the dc-link of a three-leg four-wire two-level VSC operating under unbalanced loads are detailed. Furthermore, a low-power VSC prototype is used to demonstrate the working principle of the BESS, providing power unbalance redistribution and symmetric power exchange. Additionally, the ICR18650-26F Lithium-ion cells are cycled to reach end-of-life with different current profiles and C-ratings. The analysis shows that charging with a 100 Hz ripple superimposed to the dc current leads to a 10% increment in degradation
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