基于DSP的低压TSC动态无功补偿装置的研制

【作者】 朱连欢；

【导师】 黄民翔；

【作者基本信息】 浙江大学 ， 电气工程， 2008， 硕士

【摘要】 本文主要研究了无功补偿对电网性能的改善,无功补偿装置的控制策略、原理等关键技术以及控制器的软硬件设计。系统硬件上采用了TI公司的32位定点DSPF2812处理器进行控制,具有比传统的单片机控制运算速度高,实时性好的特点。采用晶闸管控制投切电容器,全数字化控制,全中文液晶显示、界面实时显示系统运行状况,完全实现了电容器的快速,无弧,无冲击投切,具有优良的性能。在软件上,采用C语言编程,遵循模块化设计原则,提高了系统的通用性和维护的简易程度。在投切原则上,与常见的功率因数控制方案相比较,采用综合无功功率控制,避免了轻载振荡。为了实现装置应具有的功能,本文设计并制作了较为完整的控制电路及其外围设备的硬件电路。它们包括触发电路、采样电路、显示电路及通讯电路等。文中还设计编写了整个控制系统的控制程序,给出了控制软件的结构框图。最后,对无功补偿装置的发展和DSP控制技术的发展进行展望。更多还原

【Abstract】 The paper mainly includes the followed parts: the ameliorating of the net’s capability by the reactive power compensation, the control method and principle of reactive power compensation device and the hardware and software design of the device.The device’s hardware core is the 32-bit fix point DSP TMS320LF2812 produced by TI corp., which has many merits such as high operating speed and high real-time. The system adopts thyristor as switch that connect capacitors to main circuit, numeralization control, and Chinese menu LCD screen interface displaying system’s run-time Status momentarily. It actualizes the capacitor’s speediness, no arc, no percussion switching, and has superior performance.The software design adopts the assemble language; we use the method of modularization which can improve the universal trait of the program and simplify the device’s maintenance. Mention of switching law, control method considering reactive power, comparing with familiar control method considering power factor, avoids oscillation on the condition of light loading. In order to realize system’s required function, this paper designs and realizes comparatively integrate microcomputer controlled circuit and its peripherals circuit, including triggering circuit, sampling circuit, displaying circuit and communicating circuit. It also designs the whole controlling program of the system, and gives the controlling software structure flow chart.At last, the paper looks into the future of the development of reactive power compensation and the technique of DSP controller.更多还原