Movable bifurcation control system based on DSP (Digital Signal Processor)
A technology of control system and compensation system, which is applied to the AC network to reduce harmonics/ripples, reactive power compensation, harmonic reduction devices, etc., can solve problems such as oscillation instability and continuous periodic oscillation of the system, and achieve fast response speed , The hardware circuit is simple, the effect of improving speed and accuracy
Inactive Publication Date: 2010-12-01
TIANJIN UNIVERSITY OF TECHNOLOGY
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[0004] The purpose of the present invention is to solve the problem of continuous periodic oscillation or even oscillation instability of the power system due to dynamic bifurcation, and to provide a dynamic bifurcation control system based on DSP
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[0044] A dynamic bifurcation control system based on DSP (see figure 1 ), the hardware part of the system consists of the main circuit and the control part. Its main circuit (see figure 2 ) consists of a reactive power compensation system and a filter system, and the control part consists of a detection circuit and a control circuit (see image 3 ) and a drive circuit. The driving circuit adopts HCPL-4504 produced by Hewlett-Packard Company (see Figure 7 ) will satisfy the requirement. The digital control system of the control part adopts the DSP chip TMS320F2812 (hereinafter referred to as F2812) of Tl Company as the core. The whole control circuit is composed of signal conditioning circuit, digital-to-analog conversion circuit and logic circuit.
[0045] Wherein, the above-mentioned reactive power compensation system in the main circuit includes: the reactive power compensation system includes: an inverter part, an energy storage part and a filter part. The inverter ...
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The invention relates to a movable bifurcation control system based on a DSP (Digital Signal Processor). The system comprises a main circuit and a control part, wherein the main circuit comprises a reactive power compensation system and a filter system and can effectively restrict the power / frequency oscillation of a power system and eliminate Hopf bifurcation. When the power system has uncertain factors or is disturbed, the filter system can change the bifurcation criticality while keeping a balance point unchanged and convert the subcritical Hopf bifurcation of an original system into supercritical Hopf bifurcation so as to keep the disturbed system rapidly and gradually stable. The control part comprises a detection circuit, a control circuit and a driving circuit, wherein the control circuit comprises a DSP, a logic circuit, a signal conditioning circuit and a D / A conversion circuit. The invention has the advantages of simple hardware design, high integration, good electromagnetic compatibility, and the like.
Description
【Technical field】: [0001] The invention belongs to the technical field of power system stability control, and in particular relates to a dynamic branch control system based on DSP. 【Background technique】: [0002] In recent years, with the gradual expansion of the scale of the interconnected power system and the intervention of modern power electronic equipment, its dynamic characteristics have become more and more complex. It has gradually attracted people's attention, so in order to ensure the safety of the power system, it is necessary to find a new method that can analyze and control nonlinear problems, so some researchers turned their targets to central manifold theory, bifurcation theory and chaos theory. The development of bifurcation theory has brought an opportunity to solve power system problems including voltage stability. This is the objective background of introducing the bifurcation analysis theory of nonlinear dynamic system into the analysis of power system v...
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IPC IPC(8): H02J3/18H02J3/01
CPCY02E40/30Y02E40/40
Inventor 马幼捷李小双周雪松李季问虎龙贾丽英
Owner TIANJIN UNIVERSITY OF TECHNOLOGY