EVALUATION OF DYNAMIC CHARACTERISTICS OF MULTIMACHINE ELECTRIC POWER SYSTEMS ON THE BASE OF DATA OF TRANSIENT MODES MONITORING SYSTEM
Keywords:electric power system, transient modes monitoring system, frequency regulation, kinetic energy store, inertia response, virtual inertia, renewable sources of energy, coherent groups of generators
The aim of introduction of transient mode monitoring system is the increase of reliability and energy supply quality by means of decision making in real time rate on the base of synchronized measurement analysis. Processing of the data, obtained from the system of transient modes monitoring (STMM) provides
the account of dynamic properties of electric power system (EPS). The character of electromechanical transient processes of multimachine EPS is determined, to a great extent, by the inertia of rotating masses of generators, motors and complex resistances of electric couplings between them.
Modern trends in the development of power industry revealed problems, dealing with further integration of renewable sources of energy (RSE). Inverter connection of RSE does not provide the feedback of energy sources with electric grid, that results in reduction of kinetic energy store (KES) of rotating masses of energy system. In its turn, KES is fast acting reserve of power, that provides stability of electric system operation to reaction of primary regulators of frequency and active. Taking into account the fact that RSE, connected by means of inverters do not have inertia response (IR),in order to maintain stable operation of EPS it is necessary to develop methods and tools for increasing IR of RSE.
Thus, the analysis of transient processes in EPS with RSE and development of methods, aimed at increase of kinetic energy stores of rotating masses of electric power system is an urgent problem.
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