Distributed generation and voltage control in distribution network

This work is devoted to the possibilities of solution the negative impact of dispersed generation to the prescribed level of RMS voltage in distribution systems in the Czech Republic. According basic laws of electrical engineering voltage rises in the point of common coupling (pcc) by the operation of power source. Voltage characteristics are dependent on production diagram of power plant. In distribution systems with higher proportion of distributed generation is the problem with exceeding of voltage limits very actual. Therefore it is necessary to apply optimal technical solutions to improve voltage stability. One of the possibilities is dispatching control of power plants' reactive power.