【作者】 张康；

【导师】 郭育华；

【作者基本信息】 西南交通大学 ， 电力系统及其自动化， 2008， 硕士

【摘要】 以固定电容或电容分组进行无功补偿的装置,因其低廉的价格一直是补偿电网无功和滤除电网谐波的主要手段,装机容量将越来越大。但目前工程所应用的装置,通常是由控制器和继电保护两套独立设备构成,并且通常是不同的生产厂家,这样在实现接口时就要进行二次开发。在无功补偿和谐波滤波时,通常为了监视补偿效果,要对电网质量进行分析,现在有专门的电能质量分析仪,但成本价格较高。本论文研究的多功能无功补偿控制器,目标是将无功补偿控制器、继电保护和电能质量分析集成一体,提高系统的综合性,给工程项目带来很大的方便,从而大大减少系统成本,缩短了系统的开发周期。论文先介绍了瞬时无功功率理论、无功电流的检测原理、TSC无功补偿原理、电能质量分析时所涉及到电能参数的计算理论以及继电保护的原理和设计等理论。然后在这些理论基础上,设计了以TMS320F2812DSP芯片和EP1C6Q240C8 FPGA芯片为核心的控制器,同时设计了采样电路、信号调理电路、锁相环以及其它外围电路;并在硬件平台上完成了系统软件设计:包括无功功率的检测、电压和电流信号采样、FFT分析、TSC投切控制、以及继电保护等功能,并利用VC++开发了人机界面,以便于电能质量分析。更多还原

【Abstract】 The equipment based on fixed capacity and subdivided capacitor which are used for reactive power compensation, because of its low price, has been primary used for reactive power compensation and filtering out harmonic, the installed capacity would grow bigger and bigger. However, the device used in the project, usually composed of the controller and relay protection, they are two sets of independent equipments, and often produced by different manufacturers.We must do secondary development when use them. In reactive power compensation and harmonic filtering, we need to do some analysis of power quality in order to watch the effect of the compensation. Many manufacturers developed specialized power quality analyzers which cost too much.This paper studies on the development of the multi-function reactive power compensation control system, the target is to colligate var compensation controller, the power quality analysis and relay protection together, greatly reduced the costs, enhanced the function of the system and shorten the development cycle.Firstly, the paper introduces instantaneous reactive theory, the theory of the reactive current detection, the TSC theory, the calculation of the power parameters and the design theory of relay protection. Secondly, based on these theories, the hardware platform is designed which used the TMS320F2812DSP and EP1C6Q240C8 FPGA as the core, and sampling circuit, signal processing circuit, phase locked loop and other peripheral circuit. And then designs the system software: the reactive current detection, the sampling of the voltage and current signals, FFT analysis, the put into and cut of the thyristor, and relay protection. In order to do the power quality analysis and, we also designs the human-machine interface with VC++.更多还原