輸電線路參數(shù)掃頻測量新技術(shù)的研究與實現(xiàn)
[Abstract]:Power frequency parameters of transmission lines are the necessary parameters for the establishment of scientific mathematical model of power system before power flow calculation, relay protection setting calculation and selection of power system operation mode, etc. Its accuracy is directly related to the operation safety of power grid. Since there are many factors affecting the power frequency parameters of transmission lines, the influence of various factors on the power frequency parameters can not be accurately obtained by theoretical calculation. Therefore, in the operation rules of power system in our country, it is clearly required to measure the power frequency parameters of new or newly reformed transmission lines before they are put into operation. In this paper, a new method for measuring the power frequency parameters of transmission lines is proposed, aiming at the problems existing in the measurement of the power frequency parameters of the transmission lines with strong interference and long distance by using the conventional method of measuring the power frequency parameters of transmission lines. In order to suppress the influence of strong power frequency interference on measurement accuracy, the method can obtain high accuracy and high reliability power frequency parameters of transmission lines. In addition to the three-phase voltage-mode 200~2000Hz inverter which deviates from the power frequency far away from the power frequency, the three-phase voltage-mode PWM inverter is used as the excitation source for the sweep frequency measurement, and the signal detection techniques of software filtering and hardware filtering are also used. The main research contents of this paper are summarized as follows: (1) the research results in the field of power frequency parameter measurement of transmission lines at home and abroad are comprehensively analyzed. The main technical problems and research progress in the measurement of power frequency parameters of transmission lines are summarized. (2) A scientific analysis is carried out on the different frequency measurement methods of power frequency parameters of transmission lines in current application. In this paper, a method for measuring power frequency parameters of transmission lines is put forward, and the scientific and feasibility of this method is analyzed theoretically. In order to solve the complex transcendental equation of power frequency parameter sweep measurement of long distance transmission line, it is difficult to realize it with microprocessor because of the demand of extracting eigenvalue of distributed parameter. This paper studies the method of extracting the eigenvalue of transmission line distribution parameters by using the resonance point of long distance transmission line. (3) the generation of three-phase frequency sweep excitation source is the two key techniques needed to realize the power frequency parameter sweep measurement method of transmission line. (4) Power electronics technology, electronic measurement technology, digital signal processing technology and adaptive control technology are applied. This paper designs and develops a set of intelligent test equipment for power frequency parameter sweep measurement of transmission line. (5) the simulation test and field test are carried out by using the frequency sweep measurement device. The experimental results verify the feasibility and reliability of the principle of power frequency parameter sweep measurement and the measuring device. Theoretical research and a series of scientific experiments show that this research provides a set of feasible theory and intelligent measuring device for measuring power frequency parameters of transmission lines. The research has obtained a set of independent intellectual property rights, which can effectively improve the setting accuracy of power system relay protection, and have positive significance to enhance the reliability and safe operation level of power system operation.
【學位授予單位】:武漢大學
【學位級別】:博士
【學位授予年份】:2013
【分類號】:TM75
【相似文獻】
相關(guān)期刊論文 前10條
1 夏虎林;;掃頻相關(guān)干涉信號用作多參數(shù)指示的原理及其應(yīng)用[J];宇航計測技術(shù);1981年03期
2 ;微波掃頻源程控器[J];宇航計測技術(shù);1986年05期
3 ;微波掃頻源程控器[J];宇航計測技術(shù);1986年03期
4 龔慶祥;;多點最大值響應(yīng)控制在正弦振動掃頻試驗中的應(yīng)用[J];洪都科技;1978年04期
5 劉洋帆;張鵬;張玉娟;;數(shù)字掃頻系統(tǒng)設(shè)計[J];伺服控制;2011年05期
6 李懷春;儀器在掃頻振動中響應(yīng)的控制[J];航天控制;1987年03期
7 唐灼華;;共振柱儀快速自動掃頻試驗的實現(xiàn)[J];勘察科學技術(shù);1988年03期
8 謝■]I,湯寶平,秦樹人;虛擬式掃頻/幅儀的設(shè)計[J];重慶大學學報(自然科學版);2002年04期
9 崔永順;王暖讓;年豐;;基于DDS的通用掃頻源設(shè)計[J];宇航計測技術(shù);2014年01期
10 張正華;一種數(shù)字式低頻掃頻方案[J];揚州大學學報(自然科學版);2001年02期
相關(guān)會議論文 前3條
1 孫稼;曹江;張其劭;;掃頻雙六端口自動網(wǎng)絡(luò)分析儀研究[A];1989年全國微波會議論文集(上)[C];1989年
2 王洪斌;高德生;李素艷;趙光明;趙俊書;;淺談赤峰移動基于掃頻方式的網(wǎng)絡(luò)優(yōu)化[A];科技創(chuàng)新與經(jīng)濟結(jié)構(gòu)調(diào)整——第七屆內(nèi)蒙古自治區(qū)自然科學學術(shù)年會優(yōu)秀論文集[C];2012年
3 亢碩;王厚軍;李靜波;;一種掃頻信號發(fā)生器的設(shè)計與實現(xiàn)[A];2007'中國儀器儀表與測控技術(shù)交流大會論文集(二)[C];2007年
相關(guān)重要報紙文章 前4條
1 湖南 劉麗;BT-3型掃頻圖示儀故障分析與維修31例(二)[N];電子報;2013年
2 湖南 劉麗;BT-3型掃頻圖示儀故障分析與維修31例(一)[N];電子報;2013年
3 安徽 蘆濤;BT-7型掃頻儀故障檢修[N];電子報;2005年
4 北京神州泰岳軟件股份有限公司;基于掃頻的網(wǎng)絡(luò)結(jié)構(gòu)評估及優(yōu)化系統(tǒng)平臺[N];通信產(chǎn)業(yè)報;2011年
相關(guān)博士學位論文 前4條
1 沈毅;環(huán)腔掃頻光學相干層析成像系統(tǒng)研制和應(yīng)用研究[D];浙江大學;2015年
2 霍天成;基于線性掃頻和光計算的高速光學相干層析成像[D];清華大學;2014年
3 楊祥國;輸電線路參數(shù)掃頻測量新技術(shù)的研究與實現(xiàn)[D];武漢大學;2013年
4 吳彤;掃頻光學相干層析成像方法與系統(tǒng)研究[D];浙江大學;2011年
相關(guān)碩士學位論文 前9條
1 周暉;掃頻OCT系統(tǒng)中相對強度噪聲來源與抑制技術(shù)研究[D];東南大學;2015年
2 劉志會;一種基于FPGA的信號發(fā)生和掃頻模塊的設(shè)計[D];中國科學院研究生院(光電技術(shù)研究所);2016年
3 張彪;連續(xù)波多普勒引信抗掃頻式干擾方法研究[D];北京理工大學;2016年
4 夏宗楊;相位連續(xù)的線性掃頻技術(shù)[D];上海交通大學;2014年
5 朱海龍;基于LabVIEW的掃頻OCT系統(tǒng)研究[D];杭州電子科技大學;2014年
6 宋陽;基于AD9858的寬帶線性掃頻源研究[D];長春理工大學;2009年
7 葛健;基于AD9858寬帶線性掃頻源研究[D];南京理工大學;2005年
8 張書策;掃頻式超聲波紡織實驗儀的設(shè)計與羅布麻脫膠效果研究[D];青島大學;2007年
9 劉文鋒;2~7GHz寬帶YTO掃頻源的設(shè)計[D];電子科技大學;2011年
,本文編號:2190301
本文鏈接:http://sikaile.net/falvlunwen/zhishichanquanfa/2190301.html