Intelligent active power filter instructional current detection system

Abstract

The present invention belongs to the technical field of current detection, and discloses an intelligent active power filter instructional current detection system. The system comprises a voltage collection module, a current collection module, a temperature collection module, a main control module, a detection module, a fault detection module, a fault alarm module and a display module. The method employs the detection module to still accurately detect harmonic waves when the three-phase network voltage is not balance, is good in compensation effect, can properly regulate and control a target according to the compensation requirement, and is more flexible in control mode and high in practicability; the method can regulate and control a target according to different compensation demands in the condition that the network voltage is not balance to achieve complete harmonic cancellation or unit power factor compensation; and moreover, the method employs the fault detection module and the fault alarm module to perform timely detection of fault signals and can notify workers of safeguard procedures.

Description

technical field [0001] The invention belongs to the technical field of current detection, in particular to an intelligent active power filter command current detection system. Background technique [0002] The power filter is a filter circuit composed of capacitors, inductors and resistors. The filter can effectively filter the frequency point of a specific frequency in the power line or frequencies other than this frequency point to obtain a power signal of a specific frequency or eliminate a power signal of a specific frequency. The main function filter, as the name suggests, is a device that filters waves. However, in the current process of current filter command detection, the continuous superposition and accumulation of harmonic signals will cause voltage distortion, and the failure of the power grid or certain specific working conditions will also cause unbalanced three-phase voltage, resulting in harmonic command signal The accuracy and precision of the extraction s...

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: in the current process of the existing filter command detection current, the continuous superposition and accumulation of harmonic signals will cause voltage distortion, and the failure of the power grid or certain specific working conditions will also cause three-dimensional distortion. The unbalance of the phase voltage will affect the accuracy and precision of the harmonic command signal extraction strategy; at the same time, if there is a failure in the inspection process, the staff cannot be notified in time

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