Three-phase unbalanced load regulation method of low-voltage distribution network based on fuzzy pid control

Abstract

The present invention proposes a three-phase unbalanced load control method of low-voltage distribution network based on fuzzy PID control. This method uses the fuzzy PID power control module to measure the three-phase unbalanced current of low-voltage distribution network in real time, and the three-phase unbalanced current The difference with the average current is transmitted as an input signal to the fuzzy PID power controller of each phase electrical appliance, so that the low-voltage distribution network can perform parameter setting under adaptive control, fine-tune the power within the allowable range of the electrical appliance, and reduce the load of the three-phase Unbalance, reduce network loss, improve distribution network reliability, and ensure safe and stable operation of distribution network.

Description

Technical field [0001] The present invention belongs to the technical field of low voltage distribution, particularly relates to a three-phase unbalanced load regulation method based on fuzzy PID control low-voltage distribution network. Background technique [0002] Problem low voltage distribution network in the three-phase unbalanced load of very prominent, three-phase unbalanced load will increase the line loss as well as transmission equipment, affecting the normal operation of power transmission equipment, reduce the reliability of the distribution network is not conducive to the security of the power grid Stable operation. Existing three-phase unbalanced load regulation can only be de-energized by artificially regulated manner, but with the development of my country's power industry, the number and scope of the low voltage distribution network continues to expand, even more serious three-phase unbalance degree, greatly reducing the use of traditional methods the economy an...

AI Technical Summary

Problems solved by technology

[0002] The problem of unbalanced three-phase load in low-voltage distribution network is very prominent. Unbalanced three-phase load will increase the loss of lines and transmission equipment, affect the normal operation of transmission equipment, reduce the reliability of distribution network, and is not conducive to the safety of the power grid. Stable operation

The existing three-phase unbalanced load control can only be realized through artificial control of power outages. However, with the development of my country's electric power industry, the number and scope of low-voltage distribution networks continue to expand, and the three-phase unbalanced degree becomes more and more serious. The economy and stability of power transmission are compromised, and it is more difficult to meet the needs of users in production and life while increasing operating costs.

Images