Dissertation > Excellent graduate degree dissertation topics show

Research on Reduced Space Algorithm for Model Predictive Transient Voltage Stability Emergency Control

Author: GuoTing
Tutor: LiuMingBo
School: South China University of Technology
Course: Proceedings of the
Keywords: transient voltage stability nonlinear model predictive control Radaucollocation nonlinear programming sequential quadratic programming reduced spacetechnology
CLC: TM712
Type: Master's thesis
Year: 2012
Downloads: 50
Quote: 0
Read: Download Dissertation

Abstract


Model predictive control strategy had fast response to the sudden changes of the systemstructure and random outside interference because of the receding horizon optimization andfeedback correction technology. Therefore, model predictive control was an effective strategyfor power system transient voltage control online, but the nonlinear character of the powersystem predictive model and the computation efficiency for online control has not been solvedefficiently. The computation efficiency of the receding horizon optimization was the criticalbottleneck of the existing model predictive voltage stability control especially for transientvoltage stability emergency control.The receding horizon optimization model was established for power system transientvoltage stability emergency control. In this model, the objective function considered bothvoltage deviations in predictive horizon and control cost in control horizon, and equalityconstraints consisted of the differential and algebraic equations which reflected the dynamicprocess on power system, and inequality constraints were bounds on variables. The dynamiccharacteristic of the induction motor loads which had a significant impact on the transientvoltage stability progress was considered in this paper. The power system transient voltagestability emergency control was implemented by means of regulating reactive power injectionat each bus and reference voltages of automatic voltage regulator (AVR) in premise of no loadshedding. Therefore, the receding horizon optimization model was a dynamic optimizationproblem which consisted of a large amount of differential algebraic equations (DAEs) andbounds on variables.Radau collocation method was applied to convert the dynamic optimization to nonlinearprogramming (NLP) which had high dimension but relatively few degrees of freedom.Considering the few degrees of freedom in this optimization, the reduced space sequentialquadratic programming (RSQP) methods was applied to enhance the computation efficiencyof the high dimensional nonlinear programming. Several key steps of the reduced spacedapproach including space decomposition, computation of cross term and reduced hessian,selection of the independent variables were discussed in detail.Compared with the standard sequential quadratic programming (SQP), interior pointmethod based on BFGS (IPM-BFGS) and interior point method based on limited-memoryBFGS (IPM-LBFGS) in Matlab’s optimization toolbox, test results on IEEE3-machine9-busand IEEE10-machine39-bus system verified the efficiency of the reduced space sequentialquadratic programming (RSQP) from the aspects of computation time and convergence. The time domain simulation model of the model predictive transient voltage stabilityemergency control was established in PSAT (Power System Analysis Toolbox), the simulationresults on the two systems above verified the proposed control strategy could enhance thepower system transient voltage stability efficiently.

Related Dissertations

  1. Two Classes of Methods for Nonlinear Programming,O221.2
  2. The Quantum-difference Evolutionary Algorithm and Its Application in the Energy Utilization Optimization of the Steam Network,TP183
  3. Two Methods Based on Filter for Solving Nonlinear Programming Problems,O221.2
  4. Reconfigurable Controller Design of Stratospheric Demonstrating Airship,V274
  5. Offshore wind farm application of HVDC technology research,TM614
  6. Azeotropic mixture separation process synthesis,TQ028
  7. Design of Dynamic Positioning System Control Strategy for Dredger,U674.31
  8. A New Superlinearly Convergent Algorithm of Combining QP Subproblem with System of Linear Equations for Constrained Optimization,O241.6
  9. Study on the Algorithms of the Bilevel Programming Problems,O221.1
  10. The Policy-type Adjustment Model of the Sale Electric Power Price and Its Analysis,F426.61
  11. Study on Integration and the Penetration Limit of Wind Power,TM614
  12. Research on Technology of Spectral Color Calibration Based on Lookup Table,TP391.41
  13. 2015 China Southern Power Grid voltage stability analysis and calculation,TM712
  14. Analysis of the Impact of Wind Power on Grid Voltage,TM712
  15. Study of the Parallel Variable Distribution Algorithms of Quadratic Programming,O246
  16. Study on Optimization of Air Vessel Parameters in Long-Distance Water Supply Pipelines,TU991.39
  17. Research on the Thrust Allocation of Dynamic Positioning System Based on the SQP Method,U664.81
  18. Economic Dispatch of Electric Power System Based on an Improved Differential Algorithm,TM714
  19. A New Method of Fuzzy Nonlinear Programming Based on Ranking of Fuzzy Number,O159
  20. Stability Analysis and Control Strategies of UHV Access Zhejiang Grid,TM712
  21. The Research and Applications of Hybrid Differential Evolution Algorithm,TP18

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