METHOD FOR CONTROLLING OPERATION OF SET OF AGGREGATES OF COMPRESSOR SHOP Russian patent published in 2002 - IPC

FIELD: controlling operation of gas pumping aggregates of gas compressor shop while providing gas transportation. SUBSTANCE: method comprises steps of measuring pressure of transported gas at inlet and outlet of superchargers; measuring temperature of transported gas at inlet and outlet of superchargers; detecting rotation number of rotors of superchargers; measuring pressure or flowrate value to be compared with predetermined value; forming control stimula for fuel supply system of drive units of gas pumping aggregates of gas compressor shop; determining necessary values of rotor revolution number of superchargers with use of static functions; according to pressure value of technological gas at inlet and outlet of superchargers operating in parallel determining volume effectiveness, polytropic efficiency and polytropic compression power of compressor shop necessary for providing preset gas pressure at outlet; determining for each aggregate mechanical power on shaft of supercharger drive unit and according to it calculating consumption of fuel gas of drive units and total consumption of fuel gas of compressor shop; repeating such procedures and changing values of rotor revolution numbers at keeping constant polytropic compression power of compressor shop in order to receive set of values of rotor revolution number and to select among them such value that may be considered as optimal according to criterion of minimum fuel gas consumption while taking into account limit values of rotor revolution number. Job is fed to control systems of gas pumping aggregates as control stimula. In order to take into account unstable parameters of control object, functional characteristics of each supercharger are continuously parametrically tuned while using pressure values of transported gas at inlet and outlet of supercharger, temperature values of transported gas at inlet and outlet of supercharger and flowrate of fuel gas received by direct or indirect measuring in operation modes. EFFECT: enhanced functional reliability and quality parameters of control operations. 5 dwg