Comparative Analysis of Urban Network Connection Structure

With the scale extending and the structure complex of urban power network gradually, establishing a rational network structure is significant to reliable and sufficient power supply. This paper collected and sorted out network structure of typical cities and analyzed the characteristics, functions and grid structure used mainly. According to hierarchical thought and the coordinated principle of transmission and distribution, the conception that urban network structure system can be constructed based on reliability of different layers can be described the overall pattern systematically. Then the merits, drawbacks and main applicable scope of typical grid structure were analyzed and evaluated on the condition of saturated load density. Finally, typical grid structures applied in different cities were recommended based on the saturated load density in future.