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Title: Digital Computers For Gas Measuring Systems
Author: Robert D. Goodenough
Source: 1975 Appalachian Gas Measurement Short Course
Year Published: 1975
Abstract: As early as 1966, Tennessee Gas Pipeline Company was investigating a telemetering and control system to benefit our gas control facilities at Hockley, Texas. Field hardware suitable for such a system was not available at the time. As suitable components became available, the components were evaluated by company personnel, and in 1971 steps toward actual installation of a data acquisition and control system (DAC) were begun. The primary purpose of the DAC system is to give the dispatcher the latest up-to-date information about pipeline operating conditions. Until this time, dispatchers obtained line pressures at set intervals by telephone and calculated volumes of gas bought and sold during the previous day for dipatching purposes. This meant that the dispatcher was using historical data to operate the pipeline system Now. The first phase of the DAC installation brought volume information from major purchase stations to the dispatcher. The subsequent phases added additional purchase station volumes, selected sales station volumes, flow control at selected meter stations, suction and discharge pressures and temperatures from all compressor stations, engine status at compressor stations, and discharge setpoint control of compressor stations. The original purpose of the DAC system was to supply information to the dispatcher so that the pipeline system could be operated more efficiently, but now, during periods of curtailment, it can be very useful in predicting operations of the pipeline system.

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