Category Title
Environmental constraints and the deregulation of the electric utilities make it very interesting to use electric motors as an alternative to gas turbines to drive pipeline compressors. Recent projects have proven that the industry is interested in using electric motor driven compression. No emissions and electricity cost as low as 2 cents/kWh are only the key arguments. High reliability, low maintenance and low capital cost are additional benefits of the electric motor driven compression. The variable speed planetary gear combines lowest capital cost with highest efficiency. The paper describes the operating principle, characteristics, component design and efficiencies of the variable speed planetary gear. Operating range (speed and torque) are shown based on examples and limitations are explained. Examples of different applications are presented with operating experience, operating hours and availability. Variable speed planetary gears have been in use for more than 10 years, but they are new to the pipeline industry. The first variable speed planetary gear driving a pipeline compressor has been installed at the Parallel Gas Pipeline in Thailand in 1996. It is rated at 10000kW @ 9000 RPM and driven by a fixed speed synchronous motor. A similar project to the pipeline in Thailand is scheduled to be installed in the United States in the fourth quarter of 2000. This installation would be the first installation on a gas transmission pipeline in the United States.
Your Price $195.00
List Price $195.00