本文選題：電能質(zhì)量 + 諧波污染��； 參考：《中國礦業(yè)大學》2014年碩士論文

【摘要】：隨著電力技術的飛速發(fā)展，種類繁多的電力電子設備被運用到電力系統(tǒng)中，這其中有大量是非線性器件，帶來了電能質(zhì)量問題。諧波是電能質(zhì)量的一項重要指標，其帶來的安全、經(jīng)濟方面的危害也受到人們的廣泛關注。找出諧波污染源，明確治理地點，合理劃分責任對整個電力系統(tǒng)有著重要意義�？陀^劃分諧波污染責任的前提是對諧波源污染水平進行正確的估計。 諧波責任劃分技術表現(xiàn)的是供電部門及用戶對諧波污染的共同責任。近些年也有很多諧波責任劃分方法被國內(nèi)外學者所提出。這些方法大致分為兩類，一種是定性辨識，還有一種是定量估計。早期的技術主要是諧波源定性辨識，其只能判斷出電源側(cè)和用戶側(cè)哪一測是主要諧波源，不能明確具體污染水平。而后期的諧波源定量估計，則主要是通過計算諧波阻抗，算出各諧波源具體的污染水平。諧波責任劃分技術的兩大類都包含多種方法，本文對其中一些方法進行了研究和分析，指出其合理性及不足，也通過仿真進行了部分理論的驗證。 在研究分析現(xiàn)有國內(nèi)外諧波責任劃分技術后，本文提出了基于特征根估計的諧波源污染水平計算方法，該方法屬于定量估計，可以估計出各諧波源具體的污染水平。其基本思路是：將整個電網(wǎng)系統(tǒng)分為電源側(cè)和用戶側(cè)，兩側(cè)分別以戴維南、諾頓等效電路表示，根據(jù)電路理論構(gòu)建回歸模型。通過對監(jiān)測點即公共連接點進行測量，，得出諧波電壓、電流信號，運用特征根估計計算回歸系數(shù)，得出諧波阻抗進而估計出具體的諧波污染水平。在本文最后，通過MATLAB軟件搭建模型進行了實驗仿真，通過和其他方法計算結(jié)果的對比說明，采用特征根估計進行諧波源污染水平計算有一定的優(yōu)越性。
[Abstract]:With the rapid development of power technology, a wide variety of power electronic devices have been applied to power systems, among which a large number of nonlinear devices have brought about power quality problems. Harmonic is an important index of power quality, and its safety and economic harm are paid more and more attention. It is important for the whole power system to find out the harmonic pollution source, clear the treatment location and reasonably divide the responsibility. The premise of objectively dividing the responsibility of harmonic pollution is to estimate the pollution level of harmonic source correctly. Harmonic responsibility division technology is the common responsibility of power supply departments and users to harmonic pollution. In recent years, there are a lot of harmonic responsibility division methods proposed by domestic and foreign scholars. These methods can be divided into two categories, one is qualitative identification and the other is quantitative estimation. The early technology is mainly qualitative identification of harmonic sources, which can only determine which measurement is the main harmonic source on the power side and the user side, and can not determine the specific pollution level. However, the quantitative estimation of harmonic source in the later stage is mainly based on the calculation of harmonic impedance and the specific pollution level of each harmonic source. There are many methods in the two categories of harmonic responsibility division technology. This paper studies and analyzes some of them, points out their rationality and deficiency, and verifies some theories by simulation. After studying and analyzing the existing domestic and foreign harmonic responsibility division techniques, this paper presents a method for calculating the pollution level of harmonic sources based on eigenvalue estimation, which belongs to quantitative estimation and can be used to estimate the specific pollution levels of each harmonic source. The basic idea is to divide the whole power system into the power side and the user side. The two sides are represented by Davinan and Norton equivalent circuits respectively and the regression model is constructed according to the circuit theory. The harmonic voltage and current signals are obtained by measuring the monitoring points, and the regression coefficients are calculated by using the characteristic root estimation, and the harmonic impedance is obtained and the specific harmonic pollution level is estimated. At the end of this paper, the model is built by MATLAB software and the results are compared with other methods. It is proved that the characteristic root estimation has some advantages in the calculation of harmonic source pollution level.
【學位授予單位】：中國礦業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM711

【參考文獻】

相關期刊論文 前6條

1 劉秀玲;王洪瑞;王永青;陳超英;;臨界阻抗法在配電網(wǎng)諧波源探測中的應用[J];電力系統(tǒng)自動化;2007年14期

2 馮士剛;艾芊;;一種諧波負荷建模的新方法[J];電力系統(tǒng)自動化;2007年17期

3 李達義;陳喬夫;賈正春;;電力系統(tǒng)諧波源的種類和濾波方法綜述[J];電氣傳動;2005年12期

4 薛美玉,梁飛豹;廣義嶺估計參數(shù)的迭代算法[J];福州大學學報(自然科學版);2002年02期

5 馮士剛;艾芊;徐偉華;凌曉波;劉蓓;王沖;章啟明;;基于瞬時對稱分量的負荷諧波建模[J];高電壓技術;2008年04期

6 許加柱;龐麗忠;張志文;羅隆福;曾進輝;曹志煌;周冠東;;多諧波源用戶的諧波責任分攤的定量分析[J];電力自動化設備;2012年12期

本文編號：1905105