Wind power plant model checking system and method based on trace sensitivity method

Abstract

The invention relates to the technical field of a wind power plant model checking system and method based on a trace sensitivity method, in particular to the technical field applied in the wind power plant model checking. The system comprises a wind power plant and an external network equivalence system, wherein the external network equivalence system is connected with the wind power plant through a PCC (Program-Controlled Computer); the outlet voltage of a wind generating set in the wind power plant is 690 V; a wind driven generator is connected with a box-type transformer; the no-load voltage ratio of the box-type transformer is 690 / 35,000; the box-type transformer is connected with current collection circuits; the three current collection circuits are gathered in the PCC, and are accessed on the low-voltage side of a main transformer; and through boosting of the main transformer, electric energy is transmitted out through circuits. The system and the method can quickly and effectively check the modeling effectiveness of the wind power plant, and achieve the effect of checking the model accuracy while simplifying model parameters through combining the method research implemented by taking short-circuit faults as examples for instances. A novel checking method is brought for accurate modeling research to realize safe and stable operation of electric power systems.

Description

Technical field [0001] The invention relates to the technical field of a wind farm model checking system and method based on a trajectory sensitivity method, in particular to the technical field of wind farm model checking. Background technique [0002] At present, with the increasing maturity of wind power generation technology, large-scale wind turbines are connected to the grid and operated in parallel, and wind power generation accounts for an increasing proportion of the power system. In the planning and research of the safe and stable operation of the power system, the accuracy of the wind farm dynamic model is very important. Although the accuracy of establishing a single wind turbine model in a wind farm is very high, the wind turbines in different regions and different geographic locations will complicate the research problem, and introducing too many variables will also reduce the simulation speed. There are also many methods for direct modeling of wind farms, such as ...

AI Technical Summary

Problems solved by technology

The purpose is to solve the problem of the accuracy of the wind farm dynamic model in the process of power system research, and at the same time reduce the complex calculations caused by unnecessary parameters. A slip coherent wind turbine aggregation method will be used to study the wind farm dynamic model. And the validity and accuracy of the model is verified by the trajectory sensitivity method, which brings convenience to the calculation and research of power system security and stability

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