The impact of dispersed power generation in distribution systems

In the course of liberalization, dispersed power producers will increase their infeed into distribution networks more and more. The impact of the new dispersed system components needs to be investigated to achieve the most advantageous operation regarding economy and power quality. The discontinuous and undispatchable character of such dispersed sources like wind turbines or photovoltaic plants requires energy management and load flow analysis for the entire load course of networks with sufficient shares of renewable generation. New simulation models for the static and dynamic behavior are developed for typical kinds of dispersed generation. The application of the new planning and operation management methods for two municipal distribution networks demonstrates that the dispersed generation close to the customers and the power exchange on distribution level may be an economical and ecological favorable alternative for providing a higher level of power quality including both its aspects-reliability of supply and voltage quality.