220KV Power Network Design

With the rapid development of the national economy and the improvement of livingstandards，People demand for electricity is growing，and the reliability of electricity supplyand the quality is higher demanded．Because of the increasing load and the substantialincrease in power，power grid is Requested to change．The power grid which had10to15years long-range planning will be construction fordevelopment of a medium-sized city and supply power to this city．According to the city’sload，with the city’s vision and strategic planning for location，this design will be designed for220kV and110kV power network．Checking the city’s electricity consumption balance，andthe balance of reactive power whether it meets the requirements，and then to optimize．At thesame time choose some suitable transformers, and the conductor and the bus．Use softwarePSASP for the power grid short-circuit calculation，and the flow calculation．The last，I willuse new reliability index to analysis the transient stability about the power system model．...