文档介绍：基于MATLAB电力系统无功补偿器的研究
摘要: 随着电力电子设备、交直流电弧炉和电气化铁道等非线性、冲击性负荷的大量接入电网,引起了电网无功功率不足、电压波动与闪变、三相供电不平衡以及电压电流波形畸变等其它一系列电能质量问题,并严重威胁着电力系统的安全稳定运行。
首先,本文介绍了无功功率的基本概念,介绍了无功功率对电力系统的影响以及无功补偿的作用。并详尽的阐述了国内外无功补偿装置的历史以及现状。
其次,本文详细分析了静止无功补偿器(SVC)和静止无功发生器(SVG)的基本结构,控制方法和工作原理,以及各自优特点。并且阐述了它们的工作特性。
再次,本文着重进行了对SVG型静止无功补偿器提高系统电压的理论研究。利用MATLAB/SIMULINK仿真软件对SVG工作方式及利用SVG动态提高系统电压的原理进行仿真研究。并对仿真结果进行了全面分析。
最后,本文完成了一种无功补偿控制器的设计,该控制器在系统硬件上采用了由STC生产的STC10F08X单片机作为主控制器。采用ATT7022作为电能检测芯片,实现电网参数的精确采样与计算。在系统软件上采用晶闸管控制投切电容器,实现了电容器的快速,无弧的投切。采用全中文液晶显示界面实时显示系统运行状况。
关键字: 无功补偿,SVG,SVC,STC10F08X
ABSTRACT
With the power electronics equipment, AC and DC electric arc furnace and electric railways, and other non-linear, the impact of a large number of load connected to the grid, causing a power shortage of reactive power, voltage fluctuation and flicker, three-phase voltage and current power imbalances, and a series of waveform distortion and other power quality problems and a serious threat to security and stability of power systems.
First, this paper introduces the basic concepts of reactive power, reactive power described the impact on the power system and the role of reactive pensation. and a detailed exposition of the international history of reactive pensation device and the status quo.
Secondly, a detailed analysis of SVG and SVC basic structure, control methods and work principles, as well as the advantages and features of SVG. And describes the work of SVG features.
Again, this paper focuses on SVG for Static pensator improve the system voltage theory. Operations through the derivation of the formula to explain how to stabilize the system voltage . we use MATLAB/SIMULINK simulation software works and the use of SVG dynamic principle improve the system voltage simulation. And prehensive analysis of the simulation results.
Finally,This pleted a reactive pensation controller hardware design .The controller on the system hardware used by the STC production STC1OF08X micro controller as master co