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Intelligent distributed active filter system

A distributed and intelligent technology, applied in harmonic reduction devices, AC networks to reduce harmonics/ripples, reactive power compensation, etc., can solve problems such as pollution and inability to solve distributed harmonic source harmonics, and achieve guaranteed Economical, reduce the risk of resonance, and ensure the effect of efficiency

Active Publication Date: 2012-07-18
NANJING APAITEK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an intelligent distributed active filter system for the traditional centralized compensation method that cannot solve the problem of harmonic pollution caused by distributed harmonic sources and the defects of traditional decentralized in-situ filtering

Method used

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Experimental program
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Embodiment 1

[0027] Such as figure 1 , figure 2 and image 3 As shown, in the intelligent distributed active filter system of the present invention, it includes 3 active filter modules installed nearby with the harmonic source load, and 1 central controller communicates with 3 active filter modules through Ethernet, so The active filter module described above is connected to the harmonic source load nearby. The working mode of each active filter module is the same, now take active filter module 1 as an example to illustrate. The active filter module detects the harmonic current generated by the harmonic source load 1, and the active filter module automatically generates a current with the same phase as the harmonic current waveform to offset the harmonic current, so that the harmonic current generated by the harmonic source load 1 The wave current is filtered at the access point of the active filter module 1, and will not flow into other branches of the distribution network, ensuring t...

Embodiment 2

[0033] Such as Figure 4 , the central controller can be placed in the same device as the active filter module, the active filter module 3 and the central controller are designed in the same device, and the active filter modules 1 and 2 are connected through Ethernet, and the others are the same as in embodiment 1.

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Abstract

The invention discloses an intelligent distributed active filter system. The intelligent distributed active filter system is mainly based on distributed and networked architecture; and each active filter module is mounted nearby a corresponding harmonic source, so as to locally inhibit harmonic pollution and prevent harmonic currents from entering other branches in a power distribution network. The intelligent distributed active filter system disclosed by the invention comprises active filter modules and a central controlled based on a communication network, wherein the active filter modules are connected with the power distribution network and then connected with a centralized monitoring system based on the communication network; and the active filter modules are connected and mounted nearby the corresponding harmonic sources, so as to locally compensate the harmonic currents.

Description

technical field [0001] The invention relates to an active filtering system, more specifically to an intelligent distributed active filtering system. Background technique [0002] With the widespread application of power electronics technology, "energy saving and emission reduction" is being promoted smoothly, and electric energy has been more fully utilized. However, the nonlinearity of the power electronic device itself also distorts the voltage and current of the power grid. The increasing number and rated capacity of these highly nonlinear devices make the problem of harmonic pollution in the power system increasingly serious, which has become a public hazard that affects the quality of power. The safe and economical operation of the power system has a great impact; and the power supply side and its power system equipment, users and their electrical appliances have higher and higher requirements for power quality. This contradiction makes the problem of harmonic pollution...

Claims

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Application Information

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IPC IPC(8): H02J3/01H02J3/18
CPCY02E40/30Y02E40/40
Inventor 仇志凌晏祥彪李刚温小林张高玉
Owner NANJING APAITEK TECH