低压终端自动无功补偿仪的研究与设计
发布时间：2018-10-17 20:19
【摘要】：目前,无功补偿的重要意义已经受到了普遍重视,大多数无功补偿设备广泛应用于变电所、大型电力机械等高压工业领域中,为提高电能质量,增强系统稳定性发挥了重要作用。然而随着民用科学技术的不断发展,日常生活中的各类感性负载不断增多,因此,以小区供电为代表的低压终端无功补偿设备的研究,成为一个具有十分重要的意义的崭新课题。文中主要采用将目前较为先进的静止同步补偿器(Static Synchronous Compensator,STATCOM)与传统的晶闸管可投切电容器(TSC)相结合的方法,使系统兼具了响应迅速,调节流畅,成本低廉的特点。本文主要做了以下工作:(1)分析对比了各类无功补偿方案,最终选定了TSC+STATCOM的混合式无功补偿方法;(2)重点研究分析了无功补偿装置的控制策略,其中对STATCOM的数学建模和控制方法,以及TSC的控制策略进行了深入研究,提出了以TSC为主控制无功功率补偿量,辅以STATCOM控制电压的总体控制思路;(3)通过分析TSC的传统九区图控制策略,指出了存在的缺点,提出了更为合理的模糊控制策略;(4)通过比较STATCOM的电流直接控制法和电流间接控制法等两类方法,确定了电流间接控制改进法的控制方法;(5)最后基于DSP TMS320F2812芯片对无功补偿仪的硬件电路进行了初步设计,并对整个补偿系统进行了仿真,结果表明该装置达到了降低线路损耗、提高电能质量、增强系统运行稳定性的目的。
[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.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM761.12
本文编号：2277842
[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.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM761.12
【参考文献】
相关期刊论文 前3条
1 沈斐,王娅岚,刘文华,梁旭,韩英铎;大容量STATCOM主电路结构的分析和比较[J];电力系统自动化;2003年08期
2 刘晓阳;齐宏伟;于洋;陈亮;;智能型动态无功补偿控制器的设计[J];沈阳理工大学学报;2007年02期
3 李济顺,于军;锁相环实现整周期采样的方法[J];仪表技术;1999年02期
，本文编号：2277842
本文链接：https://www.wllwen.com/kejilunwen/dianlilw/2277842.html
