基于电力线信道特性的电网状态认知技术选读.doc

专业硕士学位论文 基于信道特性的电网状态认知技术研究 Research 2016年月  国际图书分类号：004.738 密级：公开 专业硕士学位论文 基于信道特性的电网状态认知技术研究 ： 导 师 ： 企业导师 ： 申请学位 ： 工程硕士 专业领域 ： 电子与通信工程 培养方式 ： 所 在 学 院 ： 电气与电子工程学院 答 辩 日 期 ： 2016年3月 授予学位单位 ： 华北电力大学 Classified Index: TP393.1 U.D.C: 004.738 Thesis for the Master Degree Research on Power Grid Status Perceiving Technology Based on PLC Channel Characteristics Candidate： Supervisor： Prof. School： lectrical and Electronic Engineering Date of Defence： March Degree-Conferring Institution： North China Electric Power University  摘 要 智能电网能够提升电力系统的有效性和可靠性，如今已成为国家战略性发展课题之一。电网状态认知技术借助于电力线中传输的PLC信关键词：Abstract The development of smart grid can improve the effectiveness and reliability of power system, and it has become one of the national strategic development projects now. Through PLC signals in the power line, grid state perceiving technique can realize the grid situational awareness, the running state of the comprehensive protection of power facilities, real-time perception and intelligent diagnosis, and improve the efficiency of safety monitoring and efficient operation. Channel characteristics are the main parameters reflecting changes in power grid operation, so we can cognitive and measure the operation state of power grid accordingly through detecting and estimating the power line channel characteristics. In this paper we study the power grid status perceiving technology based on detecting and analyzing channel characteristics. After analyzing the power line channel characteristics, the paper expounds the application direction of grid perceiving technology, including realizing the detection of power grid, the positioning of fault, the cognition of power grid topology, and the identification of the user-load. On the basis of the existing technology, this paper studies and improves Non-Intrusive Power Line Parameter Monitoring Method