MODELING THE CONNECTION OF A PROSUMER IN PARALLEL OPERATION WITH THE POWER SUPPLY SYSTEM OF AN OIL AND GAS PRODUCTION ENTERPRISE

Abstract

Relevance of research. In the areas of oil and gas production in connection with the intensive development of distributed generation, it is possible to predict the emergence of prosumers using gas turbine units running on associated petroleum gas. At the same time, the question of transient processes arising when a prosumer is connected to the power supply system of an oil and gas production enterprise seems to be little studied. As a result of the non-synchronous activation of the gas turbine installation of a prosumer, transients can turn into steady chaotic oscillations - electrical system emergency state. Thus, there is a need to study the connection of a prosumer to centralized power supply systems in oil and gas production areas. The purpose of the research is to investigate the transient processes of the connection of a prosumer electrical system’s in parallel operation with oil and gas production enterprise electrical system’s. Objects of the research are: electrical systems of the oil and gas production enterprise and the prosumer. Methods: Transient processes in electrical power systems of a prosumer and an oil and gas production enterprise are investigated by computer simulation in the software package Simscape Power Systems (Matlab). Theses of power supply for industrial enterprises were used in developing the circuit diagrams of electrical systems and determining the power of elements and voltage levels. Thesis of electrical engineering theoretical foundations and electrical-machine theory were used in determining the system component parameter values. Results. The simulation results show when the prosumer generator is switched on by the precision synchronization method for parallel operation with an outside system, a normal transitional mode lasting 4 s. When the generator is switched on asynchronously, the electrical system shows steady chaotic oscillations. Chaotic oscillations are indicated by the aperiodic nature of the change in time of the values of frequency, voltage, and power, as well as the non-strange chaotic attractor with a positive Lyapunov exponent of 0.44. Chaotic operating regime shows the field substation bus power range 18 kW, frequency range 1.5 Hz, voltage range 400 V.

Keywords

• dispersed generation
• prosumer
• chaotic oscillations
• strange non-chaotic attractor
• lyapunov exponent
• computer simulation