Dissertation > Excellent graduate degree dissertation topics show

Real-time Detection of Harmonics over Power Line

Author: WangWei
Tutor: HeDingXin
School: Huazhong University of Science and Technology
Course: Control Theory and Control Engineering
Keywords: Active filter Harmonic and reactive current Detect Fiber-optic communications SPI
CLC: TM76
Type: Master's thesis
Year: 2007
Downloads: 226
Quote: 0
Read: Download Dissertation

Abstract


With the development of power electronics , power supply system adds a number of non-linear loads , harmonics injected into the grid , which seriously affect the power quality and security of supply . Active filter APF is the best way to solve harmonic problems , the main idea is to detect the harmonic and reactive current , then compensation and inhibitory control . APF study abroad is relatively mature, basically still at the theoretical domestic research and laboratory research stage, engineering applications is relatively small . Active filter system is a key aspect is harmonic and reactive current detection, how real-time and accurate detection of harmonics is a prerequisite to achieve precise compensation control is active filtering technology applications needed to be solved. This research and development at home and abroad active filter technology status , for a variety of harmonic and reactive current detection methods for analysis and discussion, design a set of effective programs . Hardware structure is divided into two parts and the control signal is detected . Detection plate for signal processing and conversion , control panel for computing the collected data to detect and control panels through SPI communication between , in order to achieve electrical isolation, signal transmitted through the optical fiber . From design to hardware circuit chip selection signal detection are taken into account in real time and accuracy ; software , the collected data is decoded , the actual value of the signal derived from various quarters , and then based on instantaneous reactive power theory, ip , iq computing way through coordinate transformation and digital filtering , draw harmonic and reactive current component . In software development , considering the parameters of the program modularity and other factors can be modified . The text of the various parts of the design details for a detailed description , and set up experiments and simulation platform . Based on the experimental fiber-optic communications occur timing issues were discussed ; signal waveform detection experiments and some preliminary analysis of experimental phenomena ; using the Saber simulation software based on instantaneous reactive power theory of harmonic detection method is validated . Tests show that this design practical and feasible , to achieve the desired design goals.

Related Dissertations

  1. The Key Technologies of Autocollimation System Based on the Beam-Splitting Target Detecting Feedback of Laser Beam Shift,TH741.14
  2. A Mobile Health Monitoring System for the Elderly,TN929.5
  3. Experiment on Repeated Bone Harvest Chamber in Vivo,R329
  4. On the Validation Based on Penal Registration,D925.2
  5. Research and Design of Rf Modules Console Based on CPLD,TP391.44
  6. Research on the Application of Fundamental Magnetic Flux Compensation-type Series Hybrid Harmonic Suppression Device,TN713.8
  7. Sensor networks based on DaVinci platform positioning display device to achieve,TN929.5
  8. Intelligent circuit breaking device research,TM563
  9. Based on three -color LED light source projection systems research,TN946.1
  10. Recognition and measurement geometry image technology research,TP391.41
  11. Suitable for renewable energy access mobile emergency power control system design,TM46
  12. The Monitoring System Design of Constant Current Source in Ignition System,TJ414
  13. Applied Research on Fast Detection of Corn Pathogens by the Technology Combining Magnetic Beads with PCR,S435.131
  14. The Design and Implementation of Security SD Card SoC Chip SPI Interface,TN47
  15. The Research and Analysis about Determination of Banned Azo Colorants in Textile by Gas Chromatography - Mass Spectrometry and High Performance Liquid Chromatography / Diode Array Detector,TS107
  16. The Design and Realization of Image Collection System of Large Matrix-CCD Based on SOPC,TP274.2
  17. The Research and Application of EPA Network Access Technology,TP273.5
  18. Network worm defense research,TP393.08
  19. Research on Structure and Control System of FDM Material Transmission Mechanism,TG659
  20. The Research of Motor Control and Velocity-measuring System Based on Embedded Technology,TM301.2
  21. The Research of Vehicle Traveling Data Recorder Based on CAN,U463.7

CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system automation
© 2012 www.DissertationTopic.Net  Mobile