Active electric power filter device with self-testing function and testing method

Abstract

The invention discloses an active electric power filter device with a self-testing function and a testing method. A control system of the active electric power filter device comprises a man-machine interface, a filtering module and a harmonic wave source module, wherein the filtering module and the harmonic wave source module are connected with the man-machine interface at the same time. During testing, the power supply capacity of a tested place is not required to be larger than the rate capacity of the active electric power filter device, and only relatively smaller power supply capacity is required, so that the cost for a transformer, a conducting wire, a switch and the like can be reduced greatly; a test platform does not need to provide an extra harmonic wave source load, and one of tested active electric power filter devices in the test platform can serve as a harmonic wave source load, so that the cost can be saved correspondingly; and an experimental platform comprises two tested active electric power filter devices, and the two active electric power filter devices can be tested at the same time, so that the test efficiency can be improved, and the productivity can be increased.

Description

Technical field: [0001] The invention relates to related devices and test platforms in the field of power quality, and belongs to the technical field of electrical automation equipment, in particular to active power filter devices (including active power filters, static reactive power generator, etc.) and its test platform and method. Background technique: [0002] With a large number of non-linear loads such as modern power electronic equipment connected to the power grid, a large amount of reactive power and harmonic pollution are generated on the power grid, which seriously affects the power supply quality of the power grid. As power users have higher and higher requirements for power quality, reactive power and harmonic problems have attracted people's attention, and a large number of power quality control devices have been applied to power grids. [0003] As a new generation of power quality control device, the active power filter device can quickly and continuously fi...

AI Technical Summary

Problems solved by technology

[0007] 1. The power supply capacity of the test site is highly required, and the power supply capacity should be greater than the rated capacity of the active power filter device. The rated current value of the transformer, wire, switch, etc. in the test site is required to be large, and the corresponding cost is very high

[0008] 2. Only a single active power filter device can be tested each time, and the test efficiency is low

[0009] 3. It is impossible to simulate the load current conditions of various complex engineering sites

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