Research On The Method Of Regional Power Network Load Forecasting Based On Characteristic Value

Power load forecasting is an important part of power system planning, and it is also the foundation of the economic operation of power system. For grid enterprises, the system load forecasting is related to the arrangement of the units in the network and the output plan, which is an important part of the power grid.In this paper, the load structure of Laiwu power grid is analyzed. Laiwu power grid to constitute a load of iron and steel as the main element, load of iron and steel accounted for 70% of the load of the whole network and distributed in the whole network nine variable 220kV power station on, wide distribution and placement. The biggest characteristic is the load impact line is strong, at the same time no law. In addition, another feature of Laiwu power grid load is a small base. Load fluctuation has great influence on power grid.Secondly, the load characteristics of the power grid are analyzed in detail. From the daily load curve, the maximum and minimum load and the typical load characteristics of iron and steel enterprises. At the same time, the factors that affect the accuracy of load forecasting are analyzed accurately.More, through the analysis of the influencing factors, the improvement method of load forecasting is explored. The regional power load is classified into blocks, break up the whole into parts, crush one by one. Through the analysis of a large number of data, the characteristic curve of load forecasting, namely characteristic value. The characteristic value, carry out the regional power grid load forecasting recently. At the same time, the feature value prediction method the effect of post evaluation.In addition, also new energy stations on the regional power grid in the impact analysis. At present, the new energy sources in power grid are mainly wind power and photovoltaic. Two types of power supply were with 110kV and below voltage level access, influence area, low voltage operation, the regional power grid operation and load forecasting does not produce too big effect.Finally, based on the method of regional power grid load steel load forecasting are summarized and prospects. With the development of economy and increase of power supply, load forecasting method and further optimization.