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Title: Compressor Station Automation Using Distributed Control
Author: T. W. Clarke
Source: American Gas Association 1991
Year Published: 1991
Abstract: The Alberta Gas Transmission Division (AGTD) of NOVA Corporation of Alberta owns and operates a natural gas transmission system in the province of Alberta which transports over 80 per cent of marketed Canadian production. Due to the pipelines geographic size and span, emphasis on remote operation has always been strong. NOVAs compressor station facilities are operated centrally by remote control using a Supervisory Control and Data Acquisition (SCADA) system. NOVAS compressor stations are automated to allow for unattended operation and are only manned during abnormal or maintenance conditions. Current compressor station control system designs use a hybrid combination of programmable logic controllers and personal computers with software systems from various vendors, connected via a proprietary, limited functionality data highway. This paper reports on the feasibility of using modern distributed control technology to provide an integrated approach to compressor station control system design. The paper describes system selection criteria, implementation experience, and control performance. The ability to implement an Information and Control System at the compressor station, allowing enhanced remote access to compressor station data as well as local access to remote computer systems, is briefly discussed.

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