Modeling method with adaptive voltage disturbance resistance

Abstract

The invention relates to a modeling method with adaptive voltage disturbance resistance. Prevention and protection for the problems that due to voltage disturbance, a contactor trips, and a frequency converter and a soft starter halt are effectively achieved. The method includes the steps that input signal data is adjusted through an adaptive filter to form dynamic parameters, a non-adaptive filter has a static filter coefficient, the dynamic parameters and the static filter coefficient form a transfer function, and an adaptive database is formed; the filter coefficient and the frequency response are adjusted through the adaptive filter, the change characteristics, periodic characteristics and change amplitude characteristics of the data are analyzed, a preliminary mathematic model is established, and piecewise function processing is carried out; adaptive software adapting to the power distribution network electrical aspect and the mechanical aspect is obtained according to a software control program to meet actual on-site operating requirements; operating parameters of the electrical aspect and the mechanical aspect are constantly collected, and adaptive iteration is carried out to approach the optimal solution. By means of the method, it is guaranteed that equipment on a production line can operate without halting, and the continuity of production can be kept.

Description

technical field [0001] The invention relates to production safety, in particular to a modeling method with adaptive anti-voltage disturbance. Background technique [0002] With the rapid development of modernization, informatization, and automation industry, on the one hand, a series of major changes have taken place in the power load and power structure in the power grid system, and the production scale of users is gradually becoming larger and larger. The degree of systematization and automation is getting stronger and stronger, the connection between various production links is getting closer and closer, and the dependence on precision electronic equipment in the production process is growing rapidly. On the other hand, the entire process of electric energy from production to transmission and use has to span a wide geographical area. The entire electric energy transmission system will suffer from lightning, heavy rain, strong winds, man-made and many other accidents, whic...

AI Technical Summary

Problems solved by technology

This solution needs to be equipped with a DC capacity of 1.1 times or more of the actual load, the battery pack occupies a large area, requires a large investment, requires periodic maintenance, and the maintenance cost is also high in the later period, and there are also cases where the switching speed cannot meet the requirements

[0008] 2. UPS power supply support: UPS power supply is used for maintenance, uninterruptible power supply has high energy consumption, and maintenance and regular battery replacement are required. Because of its internal design with rectification and inverter circuits, it will generate harmonics and inject them into the grid, which will further affect electric energy. quality

[0009] 3. Flywheel energy storage: Use flywheels and other moving parts to store energy and release it when the pressure is lost. This solution consumes a lot of energy, has moving parts, requires regular maintenance, and has stability problems

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