随着电网中非线性负载、冲击性负载的增加，电能质量问题愈加受到人们的关注，无功补偿和谐波抑制技术也由此成为研究热点。静止无功发生器作为柔性交流输电的核心装备之一，具有良好的补偿性能，己逐渐成为无功功率补偿技术的发展趋势。 　　　本文介绍了静止无功发生器的发展和现状以及它的工作原理和控制方法，重点介绍了瞬时功率理论和以此为基础的静止无功补偿装置。在对SVG的理论和控制方法研究的基础上，建立数学模型，并且进一步讨论其控制策略。静止无功发生器(SVG)的控制方法包括电流间接控制方式和电流直接控制方式，与电流间接控制方式相比，电流直接控制方式在电流跟踪速度、控制精度等方面更具有优势，所以本文选用电流直接控，采用正弦脉宽控制技术。 　　　在上述理论基础上，用MATLAB/Simulink仿真软件搭建了静止无功发生器完整的系统模型，采用的无功电流检测法，直接电流控制法进行电压、电流的双闭环控制，验证了SVG在无功补偿的可行性。另外设计了软硬件方案，硬件部分采用了锁相环(PLL)同步采样技术来达到对电网数据采样的同步性，可以实现对电网频率的自动跟踪；根据直接电流制方式设计了控制软件部分，利用DSP作为控制器的核心处理器，可以提高补偿的实时性。综合以上的硬件电路和控制软件的设计，研制了SVG的控制电路装置，并且得出部分实验波形，为完整SVG装置的研制铺垫下良好的技术基础，同时也为SVG的进一步研究提供了试验平台。

With the increase of nonlinear load, impact load in power grid, power quality problem more and more attention, reactive power compensation and harmonic suppression technology also becomes research hotspot. Static reactive power generator as one of the core of the flexible ac transmission equipment, has a good compensation performance, has become the development trend of reactive power compensation technology. 　　　This paper introduces the development and status quo of static reactive power generator and its working principle and control method, focuses on the theory of instantaneous power and on this basis, the static reactive compensation device. On theoretical research and control method of SVG research, on the basis of establishing mathematical model, and further discuss its control strategy. Static var generator (SVG) control method including ways of current indirect control and direct current control method, compared with the current indirect control method, direct current control mode in current tracking speed and control precision has more advantages, so this article chooses direct current control, the sine pulse width control technology. 　　　Based on the above theory, using MATLAB/Simulink simulation software to build the static reactive power generator, the complete system model, the reactive current, direct current control method for voltage and current double closed loop control, verify the feasibility of SVG in reactive compensation. In addition to design hardware and software solutions, hardware part adopts the phase-locked loop (PLL) synchronous sampling technology to achieve the power grid synchronization of data sampling, can realize the automatic tracking of power grid frequency; According to the direct current system design of the control software part, using DSP as the core processor of controller, can improve the real-time performance of the compensation. Integrated over the design of the hardware circuit and control software, SVG control circuit device is developed, and obtain some experimental waveforms, developed for complete VSG device beds down good technology foundation, but also provides a test platform for the further study of SVG.