【摘要】：目前,無(wú)功補(bǔ)償?shù)闹匾饬x已經(jīng)受到了普遍重視,大多數(shù)無(wú)功補(bǔ)償設(shè)備廣泛應(yīng)用于變電所、大型電力機(jī)械等高壓工業(yè)領(lǐng)域中,為提高電能質(zhì)量,增強(qiáng)系統(tǒng)穩(wěn)定性發(fā)揮了重要作用。然而隨著民用科學(xué)技術(shù)的不斷發(fā)展,日常生活中的各類感性負(fù)載不斷增多,因此,以小區(qū)供電為代表的低壓終端無(wú)功補(bǔ)償設(shè)備的研究,成為一個(gè)具有十分重要的意義的嶄新課題。文中主要采用將目前較為先進(jìn)的靜止同步補(bǔ)償器(Static Synchronous Compensator,STATCOM)與傳統(tǒng)的晶閘管可投切電容器(TSC)相結(jié)合的方法,使系統(tǒng)兼具了響應(yīng)迅速,調(diào)節(jié)流暢,成本低廉的特點(diǎn)。本文主要做了以下工作:(1)分析對(duì)比了各類無(wú)功補(bǔ)償方案,最終選定了TSC+STATCOM的混合式無(wú)功補(bǔ)償方法;(2)重點(diǎn)研究分析了無(wú)功補(bǔ)償裝置的控制策略,其中對(duì)STATCOM的數(shù)學(xué)建模和控制方法,以及TSC的控制策略進(jìn)行了深入研究,提出了以TSC為主控制無(wú)功功率補(bǔ)償量,輔以STATCOM控制電壓的總體控制思路;(3)通過(guò)分析TSC的傳統(tǒng)九區(qū)圖控制策略,指出了存在的缺點(diǎn),提出了更為合理的模糊控制策略;(4)通過(guò)比較STATCOM的電流直接控制法和電流間接控制法等兩類方法,確定了電流間接控制改進(jìn)法的控制方法;(5)最后基于DSP TMS320F2812芯片對(duì)無(wú)功補(bǔ)償儀的硬件電路進(jìn)行了初步設(shè)計(jì),并對(duì)整個(gè)補(bǔ)償系統(tǒng)進(jìn)行了仿真,結(jié)果表明該裝置達(dá)到了降低線路損耗、提高電能質(zhì)量、增強(qiáng)系統(tǒng)運(yùn)行穩(wěn)定性的目的。
[Abstract]:At present, the importance of reactive power compensation has been paid more and more attention. Most of the reactive power compensation equipments are widely used in the fields of high voltage industry, such as substations, large electric machinery and so on, in order to improve the power quality. Enhancing system stability plays an important role. However, with the continuous development of civil science and technology, various kinds of perceptual loads in daily life are increasing. Therefore, the research on reactive power compensation equipment of low-voltage terminal represented by power supply in residential area, To become a very important new topic. In this paper, by combining the advanced static synchronous compensator (Static Synchronous Compensator,STATCOM) with the traditional thyristor switchable capacitor (TSC), the system has the characteristics of quick response, smooth regulation and low cost. The main work of this paper is as follows: (1) analyzing and comparing all kinds of reactive power compensation schemes, finally choosing the hybrid reactive power compensation method of TSC STATCOM; (2) studying and analyzing the control strategy of reactive power compensation device, including the mathematical modeling and control method of STATCOM. The control strategy of TSC is studied deeply, and the general control idea of reactive power compensation based on TSC and the control voltage of STATCOM is put forward. (3) by analyzing the traditional nine-zone control strategy of TSC, the shortcomings are pointed out. A more reasonable fuzzy control strategy is proposed. (4) by comparing the current direct control method and the current indirect control method of STATCOM, two kinds of methods, such as current direct control method and current indirect control method, are compared. Finally, the hardware circuit of reactive power compensator is preliminarily designed based on DSP TMS320F2812 chip, and the whole compensation system is simulated. The results show that the device can reduce the line loss. The purpose of improving the power quality and enhancing the stability of the system.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM761.12

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本文編號(hào)：2277842