Abstract
High growth of renewable energy sources in the energy system necessitate of balancing their variable power. The integration of the interconnected power grid of Ukraine into the pan-European energy system ENTSO-E provides for solution to the issue of increasing the flexibility of the Ukraine power grid and ensuring the stability of its operating modes. It is shown that the problem of ensuring the stability of operating modes of power systems is growed by the integration of powerful wind farms in power systems. In particular, issues of stability are becoming relevant for both the powerful renewable energy sources themselves and their impact on the stability of existing power plants operating in a compatible manner with these sources at the regional level. The simulations of electromechanical transients and the study of the power grid operating mode when the operation of the wind power plant changes has been carried out in the article. The issues of ensuring the oscillatory stability of the power system at the regional level and ensuring the reliability of power supply in an extreme case - with a sudden shutdown of the wind power plant are considered. The change in power in the main transmission lines and its reverse, the dependence of the voltage in the network, the angles of the rotors of the generators of the nearest power plants and their slippage are investigated in the work. References 14, figures 4, tables 3.
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