Territory Stories

Annual power system review : December 2007



Annual power system review : December 2007


Power system review; Reports; PublicationNT




Cover title.; Made available via the Publications (Legal Deposit) Act 2004 (NT).




Electric utilities -- Northern Territory -- Periodicals; Power resources -- Northern Territory -- Periodicals

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Northern Territory. Utilities Commission

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Northern Territory. Utilities Commission

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2007 Power System Review Page 29 Utilities Commission December 2007 APPENDIX A GLOSSARY Capacity The maximum output that a generating unit can provide under specific conditions for a given time period without exceeding temperature and stress limits. Co-Generation Involves the capture of exhaust heat (or other useful thermal energy such as steam) from a generating facility that produces electricity, for use in industrial, commercial, heating, or cooling processes. Demand The amount of electricity consumed by customers at any given time or over a period of time. Demand Side Management The planning, implementation, and monitoring of utility activities designed to encourage consumers to modify patterns of electricity usage, including the timing and level of electricity demand. It refers only to energy and load-shape modifying activities for the purpose of reducing peak load and the need for generating capacity at such times. Forced Outage The shutdown of a generating unit, transmission line or other system asset for either emergency reasons or unexpected breakdown. Gigawatt-hour (GWh) A measure of electricity consumption in gigawatts for a one-hour continuous period. One gigawatt hour equates to one million kilowatt hours. Interruptible Load Load that, in accordance with contractual arrangements, can be interrupted at times of peak load. Load can be disconnected, either manually or automatically, and usually involves commercial and industrial consumers. Kilowatt-hour (kWh) The total amount of energy used in one hour by a device that uses one kilowatt of power for continuous operation. Electric energy is commonly sold by the kilowatt-hour, which equates to 1000 watt-hours. Line Pack Refers to the gas that is in the pipeline at any given point in time for the purpose of maintaining minimum pipeline operating pressure. Line pack does not increase gas supply availability, but increases short term deliverability by moving gas from one place on the pipeline to another. LNG An abbreviation for liquefied natural gas. LNG consists mainly of methane the simplest hydrocarbon. Load The amount of electricity required to meet demand at any given time. Load Duration Indicates the proportion of time that particular levels of demand (expressed as a proportion of the maximum demand for a year) are exceeded. Load Shedding Occurs when there is inadequate generation to meet demand resulting in disconnected load. Load shedding protocols enable the System Controller to automatically

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