Dissertation > Excellent graduate degree dissertation topics show

The Algorithm Researches of Novel Wide Area Backup Protection for Power Grid

Author: ZengFei
Tutor: MiaoShiHong
School: Huazhong University of Science and Technology
Course: Proceedings of the
Keywords: wide area backup protection cascade trips decomposition-coordination method parallel computing online setting
CLC: TM774
Type: Master's thesis
Year: 2011
Downloads: 25
Quote: 0
Read: Download Dissertation


With the enlargement and increasing complexity of power grids in China, traditional backup protection exposes many drawbacks and limitations such as protection failures and causing cascade trips. As new clean energy and distributed generation gradually connected into the power grid, as well as the rapid building of China’s“Unified Strong Smart Grid”, the power systems will operate in a much more complicated way. It brings a large amount of new problems and challenges to traditional backup relay protection.Generally speaking, methods of using wide-area information of the power grid to improve traditional backup protection which is not adaptive to the new situation under power grid’s fast development can be divided into two kinds: firstly, using real-time wide-area information to form new power grid wide-area backup protection algorithm, i.e., fault location procedure which is based on the wide-area information can realize direct cooperation and action among protections instead of complex setting and cooperation among traditional backup relays; Secondly, by getting real-time power grid’s operation information, online adaptive relay setting can be realize to overcome the shortcomings of traditional protections, especially of backup protections. The difficulties are large information transmitting and fast fault calculations and settings. Therefore, in view of the first method, this paper puts forward a sequence components based wide area backup protection algorithm for power grid. For a second thread, it puts forward a nodal impedance matrix parallel generating algorithm which can accelerate fault analysis and setting calculation speed.This paper presents a centralized wide area backup protection algorithm for power grids based on sequence component under the design philosophy that the algorithm should reasonably and effectively utilize communication resources and try to avoid communication congestion. Hence, the algorithm uses different wide area information in different fault locating steps. By using the uploaded information the Decision Center finally makes a protection decision. This novel protection scheme enjoys well rapidity. Besides, it has no such problems like complex settings and coordination among traditional standalone backup protections, mal-operation of backup relays during large flow transferring and so on. The feasibility and validity of the algorithm has been verified by the digital dynamic simulation.Fast generation and modification of nodal impedance matrix is the key to real-time computation of electric power systems, and the latter is the premise to realize the online relay settings. By tearing original bulk power networks into several independent small sub-networks which are connected through virtual circuit breakers, each sub-network’s nodal Z-matrix can be obtained parallelly. Taking electromagnetic influence among sub-networks into consideration, these independent nodal Z-matrixes can be modified to form the original network’s nodal Z-matrix exactly by using tools of decomposition-coordination method and Large Change Sensitivity Theory. The experiment results demonstrate the feasibility and validity of the proposed parallel algorithm.

Related Dissertations

  1. Research and Design of a High-Performance Scalable Public Key Cryptographic Coprocessor,TN918.1
  2. Research on Video Compression Algorithm Based on Multi-core Computing Platform,TN919.81
  3. Research of Finite Element Method on GPU,O241.82
  4. Numerical Simulation of Radiofrequency Waves in Magnetized Plasma,TL612
  5. Research on Wide Area Backup Protection Based on Centralized Decision-making,TM774
  6. The Research on Online Adaptive Settings,TM77
  7. Fault Tolerance for MapReduce in the Cloud Environment,TP302.8
  8. High dynamic SINS navigation solution algorithm and parallelization of,TN966
  9. Image retrieval method and system for parallel computing,TP391.3
  10. GPU-accelerated particle filter PET image reconstruction algorithm,TP391.41
  11. GPU-based parallel search algorithm for time series,TP391.41
  12. CPU-based inverse algorithm source strength,TP18
  13. Parallel computing for data-intensive reconfigurable linear array processor architecture design,TP332
  14. Large-scale approximation paragraph fingerprint - based page detection algorithm research,TP393.092
  15. Parallel and Dual-systems Cooperative Co-evolutionary Differential Evolution Algorithms and Their Application,TP18
  16. Research on Fault-Tolerant Parallel Skyline Query Technology in Cloud Computing Environment,TP311.13
  17. A Study on Diagonal Computing Model for GPGPU Platform,TP391.41
  18. Algorithm Study on Accelerate CV Image Segmentation and Exterior Industrial Image Reconstruction by CUDA,TP391.41
  19. The Study on the UAV Digital Remote Sensing & Survey System Integration and Images Data Processing,P237
  20. Application of Parallel FDTD and MPSTD Algorithm in EM Scattering,O441.4

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