發(fā)布時間：2018-01-23 00:14

  本文關鍵詞： 電能質量 統(tǒng)一電能質量調節(jié)器 模糊控制 間接控制策略 電流滯環(huán) 電壓空間矢量　出處：《天津大學》2014年碩士論文　論文類型：學位論文

【摘要】：電力系統(tǒng)發(fā)展迅速,負荷類型也趨于多樣化和復雜化,電力系統(tǒng)會出現各種類型的電能質量問題。為了減小電能質量問題造成的危害和損失,就必須以改善電能質量為目標,運用合理的電能質量控制技術來消除其影響。UPQC作為一種電能質量調節(jié)裝置,其在補償時兼具對電壓和電流的補償能力,具有很大的優(yōu)勢,目前已成為電能質量領域中的一個熱點研究內容。本文以三相三線制無中線UPQC為研究對象,在閱讀學習了大量相關中英文文獻的基礎上,分析研究了UPQC的拓撲結構,闡述其工作機理,重點研究了其檢測單元的檢測算法以及控制單元補償控制策略。UPQC補償信號檢測算法的精確度對電能質量調節(jié)系統(tǒng)的補償效果有很大的影響,本文簡要闡述了三相電路瞬時無功功率理論,給出了基于瞬時無功功率理論的p-q法以及同樣基于瞬時無功功率理論的p qi-i法的工作原理,并對這兩種方法各自的優(yōu)缺點進行探討。重點研究了一種基于Park變換的補償量檢測算法,最后結合閱讀的文獻提出了一種基于FUZZY-PID的并聯側補償信號檢測的方法。補償量控制策略是系統(tǒng)的核心部分,本文介紹了間接控制策略的原理,提出了一種串聯補償單元采用基于改進粒子群算法的模糊控制策略,介紹了其工作原理,然后深入研究了一種滯環(huán)最優(yōu)矢量的并聯補償單元控制方法,對其進行理論上的較為詳細的推導,并將其運用到并聯補償單元的控制中。對該方法進行仿真分析,并通過實驗驗證了該控制策略的可行性和有效性。
[Abstract]:With the rapid development of power system, the load types tend to be diversified and complicated. In order to reduce the harm and loss caused by the power quality problem, various types of power quality problems will appear in the power system. In order to improve the power quality, it is necessary to use reasonable power quality control technology to eliminate its influence. UPQC is a kind of power quality regulator, which can compensate both voltage and current. With great advantages, it has become a hot topic in the field of power quality. In this paper, three-phase three-wire non-midline UPQC as the research object. On the basis of reading and studying a large number of relevant Chinese and English literature, this paper analyzes and studies the topological structure of UPQC and expounds its working mechanism. Focus on its detection unit detection algorithm and control unit compensation control strategy. UPQC compensation signal detection algorithm accuracy of the power quality regulation system has a great impact on the compensation effect. In this paper, the instantaneous reactive power theory of three-phase circuits is briefly described, and the working principles of p-q method based on instantaneous reactive power theory and p qi-i method based on instantaneous reactive power theory are given. The advantages and disadvantages of the two methods are discussed, and a compensation detection algorithm based on Park transform is studied. In the end, a method of detecting compensation signal in parallel side based on FUZZY-PID is proposed. Compensation control strategy is the core of the system. This paper introduces the principle of indirect control strategy. This paper presents a fuzzy control strategy based on improved particle swarm optimization (PSO) for series compensation unit, and introduces its working principle. Then, a control method of parallel compensation unit based on hysteresis optimal vector is studied in detail. It is deduced in detail in theory and applied to the control of parallel compensation unit. The simulation analysis of the method is carried out and the feasibility and effectiveness of the control strategy are verified by experiments.
【學位授予單位】：天津大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM761

【相似文獻】

相關期刊論文 前10條

1 陳警眾;電能質量講座 第四講 電能質量改善措施的實際應用[J];供用電;2001年01期

2 ;教育部電能質量工程研究中心[J];安徽科技;2002年03期

3 奚s，

本文編號：1456133