THE ANALYSIS OF DYNAMICS OF THE SOUTH-UKRAINIAN NUCLEAR POWER STATION'S TURBOGENERATOR PARALLEL WORK BY MATHEMATICAL MODELLING METHOD

The power plants are complicated multi-machine system, which contain parallel-working turbogenerators with semiconductor excitation systems, excite controller, transformers and characterize by nonlinearity of each elements and interconnection between them. Analysis of generator's working regimes in such systems, including their mutual influences, is necessary for the synthesis of control systems and is important. Also, is important the testing and diagnosing of the excite systems before their connected to generators. For the solving of these tasks the digital diagnostics complex has been developed by authors for South-Ukrainian Nuclear Power Plant. The used in this complex mathematical model takes into account the nonlinearities of synchronous machines and semiconductor converters, as well as the mutual influences between all elements of electric power plants. This complex is described in the paper and the results of analysis of dynamics of the SUNPP's turbogenerator parallel work are presented.