Abstract
Modern conditions for a market economy lead to the need to expand power plants at large industrial enterprises. This is expressed in an increase in single installed capacities and the number of synchronous generators. The possibility of using vehicles at a number of heavy gas industry, suitable for disposal, as well as cheapness of natural gas create favorable conditions for the construction of modern power plants with relatively low capacity. Therefore, the generators driven by gas turbines, top-pressure recovery turbines and gas piston engines are widespread. However, an increase in the number of generators of local power plants leads to the complication of emergency operating modes. So, the island mode of operation, which requires careful forecasting, is not excluded. Therefore, there is a need to study possible transitional and established regimes in order to analyze the resulting stability. For this, a methodology for calculating transitional electromechanical modes was obtained, taking into account the type of primary engines and the characteristics of speed and active power regulators. On the basis of this algorithm, software has been obtained that allows you to calculate the transition processes and according to their results, to evaluate the influence of the primary engine on the resulting stability of the power supply system, as well as develop a system of measures in order to increase it. The algorithm provides for the development of mathematical models of synchronous generators, taking into account the action of automatic regulators of primary engines and their dynamic properties. Most of the existing mathematical models of synchronous generators and methods for calculating transition modes are developed in relation to turbo generators with steam turbines. This paper deals with the issues of mathematical modeling of synchronous generators brought into rotation by gas turbines, gas piston engines and top-pressure recovery turbines, in order to study transitional electromechanical processes and develop measures to increase the resulting stability of energy sources in various operational regimes.
Keywords
Synchronous generator, mathematical model, software complex, automatic speed control, parallel operation, gas turbine power station, gas piston power plant.
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