【摘要】 柔性交流输电系统对智能电网的发展至关重要,新型的静止无功发生器(SVG)是柔性交流输电系统的关键设备。SVG的补偿效果取决于对电网无功电流的检测精度。本文首先建立了SVG的数学模型,结合自适应理论实现瞬时无功电流检测的噪声对消,对现有无功检测技术加以改进,从而提高系统无功电流检测的精准度。确定了配合改进算法的直接电流控制策略,设计了SVG无功补偿系统框图;仿真结果表明:SVG无功补偿系统能够有效的补偿三相电网侧的无功功率,基于自适应理论的无功检测算法能够提高补偿效率,平衡稳定电网输出,从而保证电能质量。更多还原

【Abstract】 FACTS is of great significance of the development for smart grid.As one of the important devices for FACTS,the compensation effects of Static Var Generator(SVG) depend greatly on the accuracy of reactive current detection.By building a mathematical model of SVG and modifying instantaneous reactive power theory based on adaptive theory,the accuracy of reactive current detection was improved.The direct current control strategy was determined.And the SVG compensation system block diagram was designed.Simulation results indicate that the reaction detection algorithm based on adaptive theory of SVG compensation system can maintain steady of three-phase power network and ensure the quality of power.更多还原