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Ferranti: Electronic Summation Metering

In: Post-Innovation Performance

Author

Listed:
  • Luke Georghiou
  • J. Stanley Metcalfe
  • Michael Gibbons
  • Tim Ray
  • Janet Evans

Abstract

The need for summation metering for bulk electrical supply arose with the development of the national grid during the 1920s. The basic function of a summator is to add electrical impulses, received at random from a number of sources, in order to calculate total energy consumed and the maximum demand for power over the billing period. The normal source of impulses is a watt—hour meter with a contacting device so the impulsing is proportional to meter speed, corresponding to a fixed value in kilowatt-hours. The Central Electricity Board needed to add and subtract large amounts of power from several locations. More recently the need for summation metering has been extended to Area Boards with large private consumers, such as factories, who are supplied at more than one point. Although the total energy consumption can be calculated simply by adding meter readings, the maximum demand is determined by integrating the electrical impulses over a short period, usually 30 minutes, and indicating or recording the maximum of any one 30-minute interval over the longer billing period.

Suggested Citation

  • Luke Georghiou & J. Stanley Metcalfe & Michael Gibbons & Tim Ray & Janet Evans, 1986. "Ferranti: Electronic Summation Metering," Palgrave Macmillan Books, in: Post-Innovation Performance, chapter 7, pages 136-140, Palgrave Macmillan.
    • Handle: RePEc:pal:palchp:978-1-349-07455-6_12
    DOI: 10.1007/978-1-349-07455-6_12
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