本文選題：配電網(wǎng)　切入點：行波　出處：《山東理工大學》2015年碩士論文

【摘要】：伴隨著堅強智能電網(wǎng)建設步伐的不斷推進,快速、準確和可靠地實現(xiàn)10kV配電網(wǎng)故障定位對于提高整個供電系統(tǒng)的可靠性具有非常重要的意義。但是,隨著經(jīng)濟的發(fā)展,10kV配電網(wǎng)的配電線路網(wǎng)絡結構越來越復雜,制約了對其故障定位方法的研究和運用。本文基于行波理論,結合10kV配電網(wǎng)的網(wǎng)絡結構,對10kV配電網(wǎng)發(fā)生故障時產(chǎn)生的行波傳播過程進行分析,通過獲取和處理10kV配電網(wǎng)故障時的電壓和電流行波信號,尋找快速、準確和可靠地查找故障點的方法,并提出一套合理的10kV配電網(wǎng)故障定位系統(tǒng)方案。主要工作如下:(1)基于行波的基本理論和10kV配電網(wǎng)存在網(wǎng)絡結構復雜以及多分支的特點,分析研究了10kV配電網(wǎng)的故障行波傳播過程,為故障定位算法的研究奠定了基礎。(2)通過分析各種10kV配電網(wǎng)的定位方法的優(yōu)缺點,提出了基于D型行波原理的10kV配電網(wǎng)行波故障定位方法。該方法對10kV配電網(wǎng)直接應用D型行波原理,不但消除了10kV配電網(wǎng)中復雜行波折反射過程的影響,而且直接確定了故障點所在的線路并通過運算得出了故障點與參考測量點之間的距離。其計算簡單,方法一致,算法普遍性好,無需判斷故障分支,提高了故障定位精度。(3)基于D型行波原理提出一整套10kV配電網(wǎng)廣域故障定位技術方案。(4)運用PSCAD和MATLAB軟件對10kV配電網(wǎng)行波故障定位方法進行仿真建模和數(shù)據(jù)處理,結果表明,利用D型行波原理的10kV配電網(wǎng)故障定位方法能夠簡單、快速和準確地實現(xiàn)故障定位�；谛胁ㄔ淼墓收隙ㄎ患夹g在輸電線路上已經(jīng)發(fā)展得很成熟,本文將該技術發(fā)展應用于10kV配電網(wǎng),提出的10kV配電網(wǎng)行波故障定位方法消除了配電網(wǎng)中行波復雜的折反射過程對故障定位的影響,計算簡潔,方法統(tǒng)一,算法普遍性好�；贒型行波原理,提出的10kV配電網(wǎng)行波故障定位方案,提高了故障定位精度,進而縮短了故障點的查找時間,很大程度的提高了供電可靠性,為行波故障定位方法應用于配電網(wǎng)提供了一種可能,具有廣闊的發(fā)展前景。
[Abstract]:With the development of smart grid construction, it is very important to realize fault location of 10kV distribution network quickly, accurately and reliably for improving the reliability of the whole power supply system. With the development of economy, the distribution network structure of 10kV distribution network becomes more and more complex, which restricts the research and application of fault location method. Based on the theory of traveling wave, this paper combines the network structure of 10kV distribution network. The traveling wave propagation process in 10kV distribution network is analyzed. By obtaining and processing the traveling wave signals of voltage and current in 10kV distribution network fault, the method of finding fault point quickly, accurately and reliably is found. The main work is as follows: (1) based on the basic theory of traveling wave and the characteristics of complex network structure and multiple branches of 10kV distribution network, a reasonable scheme of fault location system for 10kV distribution network is proposed. This paper analyzes and studies the process of fault traveling wave propagation in 10kV distribution network, which lays a foundation for the research of fault location algorithm. The advantages and disadvantages of various 10kV distribution network localization methods are analyzed. This paper presents a fault location method for 10kV distribution network based on D-type traveling wave principle. This method can not only eliminate the influence of complex traveling wave reflection process in 10kV distribution network, but also directly apply D-type traveling wave principle to 10kV distribution network. The distance between the fault point and the reference measuring point is obtained by calculation. The calculation is simple, the method is consistent, the algorithm is universal, and the fault branch does not need to be judged. Based on D type traveling wave principle, a whole set of wide area fault location technology scheme of 10kV distribution network is proposed. The simulation modeling and data processing of 10kV distribution network traveling wave fault location method are carried out by using PSCAD and MATLAB software. The results show that, The fault location method of 10kV distribution network based on D-type traveling wave principle can be simple, fast and accurate. The fault location technology based on traveling wave principle has been developed very mature in transmission line. In this paper, the technology is applied to 10kV distribution network. The method of traveling wave fault location in 10kV distribution network is presented, which eliminates the influence of complex refractive reflection process of traveling wave on fault location in distribution network, and the calculation is simple and the method is unified. On the basis of D type traveling wave principle, the 10kV distribution network traveling wave fault location scheme is put forward, which improves the accuracy of fault location, shortens the searching time of fault point, and improves the reliability of power supply to a great extent. It provides a possibility for the application of traveling wave fault location method in distribution network and has a broad development prospect.
【學位授予單位】：山東理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TM732

【參考文獻】

相關期刊論文 前2條

1 桑在中,潘貞存,李磊,張慧芬;小電流接地系統(tǒng)單相接地故障選線測距和定位的新技術[J];電網(wǎng)技術;1997年10期

2 江濤;周文斌;馬光松;;架空-電纜混合線路故障點的定位方法[J];中國水運(下半月);2012年08期

，

本文編號：1681117