Research On Adaptive Equipotential Switching Intelligent Capacitors Based On Remote Control

In modern factory production,power quality is the key to achieving sustainable development,and reactive power compensation is an important way to improve power quality.Therefore,power equipment with reactive power compensation function is playing a vital role,including mainstream equipment,mechanical static compensator(MSC).However,due to the computing power,hardware conditions and improper use of the control switching method of the main control chip,the traditional MSC device is easy to produce large arc and overvoltage during the switching of the device.Therefore,the main research content of this project is to develop a new type of co-complementary MSC smart capacitor to solve the above problems of traditional MSC smart capacitors.Its main work is as follows:(1)In order to solve the switching inrush current and overvoltage phenomenon of traditional smart capacitor device,based on the co-complementary smart capacitor device,relying on its working characteristics,the principle of equipotential switching of the device was derived in detail by transient analysis method,and the electrical topology model was established on the Matlab software platform,and the simulation experiment was completed,which verifies that the equipotential switching method can realize switching without inrush current and overvoltage on the smart capacitor device.(2)In the actual project,it is necessary to consider the influence of the change of the action characteristics of the magnetic holding relay on the switching process,starting from the three main influencing factors of temperature,voltage at both ends of the relay and wear loss,a switching control method combining equipotential switching and BP(Back Propagation)neural network adaptive algorithm was proposed,and the model training and simulation experiments were carried out based on a large number of actual switching experimental data,and finally this method can make the smart capacitor device predict the change of three factors.Therefore,the switching effect of the device was greatly improved,and the equipotential adaptive switching control of the relay was realized.(3)In order to solve the problems of insufficient computing power of the embedded main control chip of the smart capacitor device,and also to realize the switching action more accurately,carry out data analysis and data collation,the device adopted the practice of organic combination with remote control technology to realize the adaptive switching control of the device from the back end,and further improved the performance of the device.In order to ensure the accuracy of power parameter calculation,the device selected the algorithm of fast Fourier and complex power combination,and proposed to cooperate with the multi-machine spectrum correction method to reduce external signal interference and improved the accuracy of power parameter calculation.(4)After passing various simulation experiments and verification,the hardware design and software design of the device were carried out,the remote control platform was established,and the connection and debugging of the device body and the control back end were completed in the later stage.After a large number of switching experiments and test experiments were verified,it was proved that the device met the expected requirements,and the research and development and design of the device were finally completed.