Development of a hybrid active/passive filter for dispersed installation on distribution power systems

开发用于分布式电力系统分散安装的混合有源/无源滤波器

基本信息

批准号：
07555092
负责人：
AKAGI Hirofumi
金额：
$ 4.1万
依托单位：
Okayama University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

项目摘要

With significant development of power electronics technology, the proliferation of non-linear loads such as static power converters in a range of 50 W to 300 MW has deteriorated power quality in transmission/distribution systems. Notably, voltage distortion or voltage harmonics may approach or exceed its allowable level in power distribution systems. Individual electric power consumers and end-users are responsible for reducing current harmonics, while electric power companies or utilities are responsible for reducinging voltage harmonics at the point of common coupling in distribution systems.In this research, a hybrid active/passive filter of 0.32 kVA,based on three single-phase voltagefed PWM inverters of 0.13 kVA,was constructed to verify the effectiveness in damping of harmonic propagation. It was installed on a specially designed distribution system rated at 3phi, 200 V and 20 kVA.The following conclusions obtained are as follows :1. The 5th harmonic voltage at the receiving terminals is amplified by three times as large as that at the sending terminals on the distribution system. Such a harmonic propagation occurs as a result of harmonic resonance between the supply inductor and shunt capacitors for power factor correction.2. The hybrid active/passive filter has the capability of perfectly damping of the harmonic propagation.3. The required rating of the active filter is only 0.6%, compared to the distribution system rating of 20 kVA.

随着电力电子技术的显着发展，50W至300MW范围内的静态功率变换器等非线性负载的激增导致输配电系统的电能质量恶化。值得注意的是，电压畸变或电压谐波可能接近或超过配电系统的允许水平。个体电力消费者和最终用户负责减少电流谐波，而电力公司或公用事业公司则负责减少配电系统公共耦合点的电压谐波。在本研究中，使用了 0.32 kVA 的混合有源/无源滤波器基于三个0.13 kVA的单相电压馈送PWM逆变器，构建了用于验证抑制谐波传播的有效性。将其安装在专门设计的额定电压为3phi、200V、20kVA的配电系统上。得到的结论如下： 1．配电系统接收端的5次谐波电压放大为发送端的3倍。这种谐波传播是由于电源电感器和用于功率因数校正的并联电容器之间的谐波谐振而发生的。2．有源/无源混合滤波器具有完美抑制谐波传播的能力。 3．与 20 kVA 的配电系统额定值相比，有源滤波器所需的额定值仅为 0.6%。