Gas transportation automatic control system

Abstract

The trunk pipeline system serves to transport gas and consists of the trunk pipeline, compressor stations, underground storage facilities and the gas distribution network. To determine the price and quantity of the supplied gas, it is necessary to measure the caloric value of the gas at the consumer. A gas quality control subsystem and a gas flow regulation circuit are being developed. The subsystem is an integral part of the ACS of the gas distribution station and consists of three main hierarchical levels. The upper level of the gas quality control subsystem is based on the SCADA system CIMPLICITY PE/HMI. A graphic interface is used for visualization of the main gas parameters, for convenience of control as well as for modification of the entered information. The middle level is built on the basis of a Modicon Micro medium-class PLC. The lower level consists of pressure, temperature, flow, humidity and chromatograph sensors.