【作者】 王骥；

【导师】 邱赤东；

【作者基本信息】 大连海事大学 ， 电力电子与电力传动， 2008， 硕士

【摘要】 利用静止无功补偿装置实现动态无功功率补偿的研究是电力系统一种新的无功补偿方法。静止无功发生器(SVG)是柔性交流输电设备的重要成员之一,作为新一代无功功率补偿装置,它以其平滑的无功调节、快速的动态特性等优良性能引起了国内外科研与工程领域的广泛关注。而在船舶轴带发电机系统中,目前大多数仍然采用同步调相机的无功补偿方法,本文研究利用静止无功发生器来代替同步调相机的无功补偿方法,以获得更好、更快的补偿效果。本文首先讨论了无功补偿装置的特点,分析了静止无功发生器的优越性能。根据静止无功发生器的动态补偿原理,比较了电流间接控制和电流直接控制方法各自的优缺点。根据船舶电力系统的特点,设计了一种改进的瞬时无功功率检测方法;考虑到传统锁相环电路的精度较低、误差大等原因,采用了一种新的获得基波正序分量的方法。针对所采用的方法进行了仿真研究,并验证该方法的可行性。本文针对静止无功发生器主电路进行了参数设计,完成了相应的硬件及软件的设计工作。更多还原

【Abstract】 At present, the research on compensating reactive power using static compensation device is one of the most active areas in power system subject. As a new Var compensator and one of the FACTS equipments, the static Var compensator attracts extensive attention for its perfect performance such as smooth regulation of Var and dynamic capability. But at present, in the system of shaft generator, a synchronous condenser covers the system reactive power demands. The paper proposes the Static Var Generator (SVG) realization method by using IGBT inverters to replace the synchronous condenser, and achieve a better goal.Firstly, the paper discusses the characteristic of the reactive power compensator; analyze the superiority of the Static Var Generator (SVG). In this thesis, the compensation performance of SVG is studied according to dynamic compensation theory; several typical are summarized and their advantages and disadvantages are analyzed; the instantaneous reactive power theory and its application to reactive power control and detection are introduced.The paper designs an improved instantaneous reactive power detection; considering the precision and error of the phase lock loop (PLL) is inaccurate, the paper adopts a new method, which can achieve the obverse order of basic wave, and simulate the mentioned method, finally validate the feasibility of the method.The paper designs the parameter of the main circuit in Static Var Generator (SVG) and finish the design of software and hardware.更多还原