The Research Of Load Forecasting And Planning Of Changzhi Power Grid

Load forecasting is an important part of power system planning, and also is the foundation of power system economic operation, which are extremely important for power system planning and operation. The main work is to predict the future load time distribution and space distribution, and provide a reliable basis for decision making of power system planning and operation.Power network planning is to load forecast and power planning as the basis, determine when built, and where and what type lines, in order to achieve the transmission capacity of the planning period requirement, satisfies the technical index of the system under the minimum cost. Research on grid planning, further clarify optimal planning project, to better guide the construction of power grid, the grid security and reliability of power supply, has the vital significance to enhance the quality of power grid development.This paper mainly carry out the research of load forecasting and planning of Changzhi power grid.First of all, the comprehensive research and analysis of the present situation of power grid in Changzhi area, Changzhi city power supply load historical data and load characteristic analysis, forecasting power supply combined with integrated unit consumption method and regression method, compare the predicted results, obtains the recommendation party and forecast of Changzhi power supply method and partition prediction of power supply, power supply load.Secondly, according to the load forecast, in Changzhi area, short-term, medium-term and long-term goal of power grid planning of power network are identified. Referring to the relevant principles of power system planning, power grid planning scheme about 500 k V and above, 220 k V, 110 k V and 35 k V network. is designed in Changzhi area.Thirdly, based on the use of and improve the existing system resources, adopt modern technology means, the planning of Changzhi power grid dispatching automation, communication, information, planning and other special.Finally, to estimate the investment planning, cost analysis and economic analysis of power transmission project.