Design of Data Acquisition and Recording Device Based on Load Modeling

In order to ensure the healthy and sustainable development of my country's power industry in the future, it is necessary to study the effective load model that accurately simulates the actual load characteristics of the power system. In this paper, a data acquisition and recording device will be designed based on load modeling, in order to obtain a large amount of high-precision on-site measured sample data, and provide a high-reliability system solution. Based on the design method and performance requirements, this paper proposes a design idea of a new field data acquisition and recording device that can be used for conventional substation bus electrical quantity data acquisition and new field data acquisition and recording device. And data flow processing. Finally, by discussing the realization methods of the key technologies in the above methods, the feasibility of implementing the above methods in the device development plan of this paper is demonstrated. Through the evaluation of technical indicators, this study established that under the premise that the measured sample data of the device has an amplitude error <5%, a phase shift error <5°, and a total harmonic distortion <1%, the load model is expressed by a difference equation and the corresponding load model is used. The optimization algorithm is used for load modeling, and the load characteristic error of the model obtained from the modeling can be controlled within 10%.