基于滤波提升的SVG电力无功补偿研究  

Research on SVG Power Reactive Power Compensation Based on Filter Enhancement

作　　者：南亚楠 卢向东[2] NAN Yanan;LU Xiangdong(Operation and Maintenance Department, Tianjin Binhai Power Supply Branch, State Grid Tianjin Electric Power Company,Tianjin300450, China;Power Dispatching Control Center, State Grid Tianjin Electric Power Company, Tianjin 300010, China)

机构地区：[1]国网天津市电力公司滨海供电分公司运维检修部,天津300450 [2]国网天津市电力公司电力调度控制中心,天津300010

出　　处：《电网与清洁能源》2018年第5期31-35,共5页Power System and Clean Energy

基　　金：国家自然科学基金(61033004)~~

摘　　要：针对地铁电力系统稳定性要求高的需求,提出一种基于改进SVG的无功补偿装置,其主要由信号处理模块、处理采集单元、变流器以及三相电压输出端组成。在补偿过程中,由电网采集得到的电压信号从信号处理模块通过,信号处理模块中对应设置了自适应形态学滤波器对电流、电压信号进行滤波调理,去除冲击干扰,并获取SVG相位补偿的控制触发信号,进而实现对于变流器的电压补偿和无功功率调节。实验测试了5种不同类型的待无功补偿电能畸变信号,其结果表明,对于不同程度的电能畸变信号,所述装置能够进行有效的无功补偿,使得电压信号的整体畸变程度被控制在0.5%以下,从而使负载性能得到保障。According to requirements for stability of the sub. way power supply system, this paper proposes a reactive power compensation device based on improved SVG, which is mainly composed of a signal processing unit, an acquisition unit, a converter and a three-phase voltage output end. In the process of compensation, the voltage signal collected from the power grid is passed through the signal processing module, the self-adapting morphology filter set in the signal processing module serves to filter the current and voltage signals to remove impulse noises so as to realize the voltage compensation for the converter and reactive power regulation. The experiment has tested 5 kinds of distorted signals to be compensated, and the result shows that the system proposed in this paper can effectively compensate power signals of different degrees of distortion, and the overall power signal dis. tillation can be made below 0.5% so that the load performance can be guaranteed.

关 键 词：无功补偿 地铁电力系统 静止无功发生器 自适应形态学滤波器 控制电路 变流器 

分 类 号：TM714[电气工程—电力系统及自动化]