Rural load type load modeling method based on load curve decomposition

Abstract

The invention provides a rural load type load modeling method based on load curve decomposition. The method includes the following steps of decomposing a rural load curve, and calculating the proportion of each type of loads in all rural loads; calculating static load equivalent parameters, dynamic load equivalent parameters and power distribution network system impedance, combining the parameters and the impedance with power supply area network topology data of rural load nodes, and obtaining a rural load type load model. According to the rural load type load modeling method based on load curve decomposition, the defects of a traditional statistics and synthesis method are overcome, modeling can be rapidly, conveniently and accurately conducted on rural load stations, accuracy of power grid simulation calculation can be improved due to the load model produced through the method, and safe, reliable and economical running of a power grid is ensured.

Description

technical field [0001] The invention relates to a modeling method, in particular to a load modeling method based on load curve decomposition in rural areas. Background technique [0002] Power system digital simulation has become the main tool for power system planning and design, dispatching operation and analysis research. The mathematical model of each component of the power system and the mathematical model of the whole system constituted by it are the basis of power system digital simulation. The accuracy of the model is directly related to Influence simulation results and decision-making schemes based on them. The model and parameters used in the simulation are important determinants of the accuracy of the simulation. At present, the detailed mathematical models and modeling techniques of generators, excitation systems, speed control systems, transformers, and transmission lines have been well developed. The electric load model is still relatively simple, and it is of...

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Problems solved by technology

[0006] (2) As time goes by, the actual load power, load composition, and network structure may change. If you want to do it once and for all after conducting a survey and statistical modeling work on the load, it is difficult to meet the accuracy requirements;

[0007] (3) The survey work needs to count the load composition and parameters of thousands of users, the workload is huge, and it is difficult to obtain accurate statistical results

[0013] (3) Rural loads are generally relatively small, the regularity of the load curve is not strong, and the proportion of special load curves is relatively high

[0014] (4) There are certain differences in the proportion of irrigation load occupied by different rural load lines

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