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Energy management system
From Wikipedia, the free encyclopedia
An energy management system (EMS) is usually a system of computer-aided tools used by operators of electric utility grids to monitor, control, and optimize the performance of the generation and/or transmission system. The monitor and control functions are known as SCADA; the optimization packages are often referred to as "advanced applications".
Depending on the global location, it is not uncommon that this computer technology is also referred to as SCADA/EMS or EMS/SCADA. In these respects, the terminology EMS then excludes the monitoring and control functions but more specifically refers to the collective suite of power network applications and to the generation control and scheduling applications.
A related technology dispatcher training simulator (DTS) is a computer system that makes use of components of SCADA and EMS as a training tool for control centre operators.
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The major global suppliers of large EMS include ABB, AREVA, GE, SIEMENS and SNC. In China, several large EMS have been delivered by Nanjing based NARI. Toshiba and Hitachi are the major EMS suppliers in Japan.
An ABB EMS includes technology derived from formerly Ferranti Ranger as well as the European Spider and SINDAC product ranges.
AREVA EMS is based on AREVA acquired ESCA technologies. ESCA is based in Seattle.
The Melbourne, Florida based GE EMS is the continued development of the former Harris Controls product range.
A SIEMENS EMS includes technology derived from former Minneapolis based Control Data Corporation (CDC) as well as the European Sinaut Spectrum product range.
An SNC EMS is the continued development of the former CAE product range. The SNC EMS product range is developed in Montreal, Canada.
Manufacturers of EMS also commonly manufacture the corresponding DTS. It is also possible to acquire DTS from non-EMS sources such as EPRI.
In a slightly different context EMS can also be as a system in an organisation to achieve energy efficiency through well laid out procedures and methods, and to ensure continual improvement, which will spread awareness of energy efficiency throughout an entire organisation.
The term Energy Management System can also refer to a computer system which is designed specifically for the automated control and monitoring of the heating, ventilation and lighting needs of a building or group of buildings such as university campuses, office buildings or factories. Most of these energy management systems also provide facilities for the reading of electricity, gas and water meters. The data obtained from these can then be used to produce trend analysis and annual consumption forecasts. Allen Martin Conservation are one of many manufacturer's of such systems.