介绍了感应滤波技术在实际工业定制电力系统中的运行经验。给出了感应滤波的单相等值电路并介绍了其基本的工作原理和技术特点,分析了感应滤波技术的滤波优势;针对某实际运行的基于感应滤波的工业定制电力系统,给出了一次设备的主电路拓扑以及所采用的主要技术参数和技术特性。对工业定制电力系统的电能质量进行了详细的现场测试。测试结果表明,采用感应滤波的工业定制电力系统能有效抑制电力系统侧的谐波电流,并且减少了定制系统中整流变压器铁心中的交变谐波磁通。同时整流变压器的附加谐波损耗得到了有效降低,功率因数得到提高,改善了系统的电能质量。
The application experience of inductive filtering technology in industrial power system is analyzed.The single-phase equivalent circuit of inductive filtering,as well as its basic principle and technical characteristics,is introduced and its merits are analyzed.The power circuit topology of primary equipments of an operating industrial power system is shown with main technical parameters and technical characteristics.A detailed field test of power quality of industrial power system is carried out and the results indicate that,the industrial power system applying inductive filtering technology suppresses the harmonic currents at system side and decreases the AC magnetic flux of rectifier transformer core.Consequently,the additional harmonic loss of rectifier transformer is reduced,the power factor is enhanced and the power quality is improved.