Layout and Study of the Optimal Design Plan of the Grid Connections

The electric grid designed in this paper includes:one thermal power plant,three substations,where installed capacity of 500MW of the 220kV grid.The article according to grid planning and design of general principles and common methods,first the original data analysis of the grid,Selected to conduct a detailed comparison of two programs,through the power grid reliability,flexibility,economic analysis,and flow calculation,wire selection and validation,based on an integrated,comprehensive balanced,the overall optimization point of view,from a technical and economic aspects of the program to determine an optimal plan.