Selection of HV equipment for large wind parks connections with power system as stability parameter and direction for network planning

The most important parameter in estimations and calculations of technical adequacy of wind park (WP) connection is short-circuit power in the Point of Common Connection (PCC). Design and planning of wind park substations can be important factor in fulfillment of transmission or distribution system operator (TSO, DSO) grid code. Likewise, selection of high-voltage equipment such as power transformer, power underground cables or overhead lines can have a considerable effect on connection terms. Typical large WP collector substation is considered. Short-circuit power dependence from high-voltage equipment characteristics in Connection Points (CP) of WP is especially examined. Detail computer simulations are elaborated for chosen substation design. The graphs quantifying the most important wind park connection parameters in relation with chosen high voltage equipment and overhead/underground option for interconnection feeder are presented.