LWKK^®APF有源滤波器

LWKK^®APF active filter

随着各种用电场合使用的设备不断精密化、节能化，用电设备对电力系统的污染程度更加严重，污染种类更加复杂。具体到谐波，含量更高，同时含有的次数更多，这些都是无源LC组合无法更好地解决的问题，LWKK^®APF可以在侦测到系统谐波含量和具体次数分布的同时，在2~50次范围内释放大小相等，方向相反的另一批谐波对其进行抵消，更加有效、宽范围地进行治理。谐波源一般常见有变频器、UPS、开关电源、整流器、可控硅调光以及办公设备等，典型的谐波重污染行业如医疗、、化工、冶金、通信、金融、港口码头、商场写字楼、造纸、矿山等，如果使用设备时产生的谐波不能被及时有效地治理，就会积累扩大对周边设备甚至系统的不良影响。

With theconstant sophistication and energy-saving of equipments used in a variety ofapplications, the electrical equipment has more serious pollution on the powersystem with more complex types of pollution. For harmonics as example, thecontent is higher with more times. Those are problems that can no be bettersolved by passive LC combination. LWKK^®APF will release anothergroup of harmonics with equal size at opposite direction within the range of 2to 50 times to offset while detecting the harmonic content and the specificfrequency distribution of the system, providing more effective and wide-rangecontrol. Harmonic sources are generally inverter, UPS, switching power supply,rectifier, SCR dimming and office equipments; in the typical harmonic pollutionindustries such as medical, civil aviation, chemical, metallurgy,communications, finance, port dock, mall building, papermaking,mining, and so on, if harmonics generated in the use of equipment will beaccumulated and expanded to the surrounding equipments and even cause theadverse effects to the system if not timely and effectively controlled.

型号说明：Model description

LWKK06-3F-100-400APF

LWKK：德莱维诺^®无功补偿系列产品Delevision^® reactive power compensation series products

06：APF有源滤波器（柜）APF activefilter (Cabinet)

3F：适用于三相三线系统，4F为适用于三相四线系统，可以更好地消除中性线上的谐波电流，可用于有中性线的三相负载或者有单相负载的场合。

3F:  Suitablefor three-phase three-wire system, with 4Ffor three-phase four-wire system; it can better eliminate the harmonic currentfrom the neutral line, and is used in the application with three-phase load orsingle-phase load of the neutral line.

100：输出的补偿电流A   Output compensated current A

400：电压等级（V）   Voltage rating （V）

建议选用有源滤波器的场合Suggestionof APF occasions

1、 功率因数高，调谐式滤波器无法自动投入或投入后出现过补，如变频器负载

High powerfactor,the tuned filter over compensation,reactive power compensation automaticswitching device could not be worked.For example,the inverter.

2、 背景谐波大，调谐式滤波器有谐振或过载危险

Backgroundharmonic large ,tuned fulter has the resonance or overload danger.

3、 中性线存在大量3K±1次谐波

Neutral lineexists many 3K±1harmonicssituation.

4、 谐波严重，对滤波效果要求高，传统谐波消除方法无法满足的使用现场

When harmonicsare serious,traditional methods of harmonic elimination is impossinble to meetthe working condition.

5、 有三相不平衡分相补偿，使用晶闸管投切速度无法满足要求

Rapid phasecompensation,thyristor switching speed can`t be met with the requirement.

以上工况时，建议使用有源滤波器 。Suggestion of APF sccasinos

选型：

额定电压的选择：Ratedvoltage choice

系统电压为400±10%V，低于该电压等级可自动兼容，其他电压等级需要特殊说明。

System voltage,400±10%V,it can automatic operate compatibility function if the voltageis lower this class,other classes should be specified.

电流互感器的选择：Currenttransformer choice

3只电流互感器（□/5A）,精度：0.5级以上

Three current transformers(□/5A）Accuracy class:＞0.5class

CT原边电流的计算：CT primary side current calculation:

集中补偿：不少于变压器的额定电流

Centralizedcompensation:≥the ratedcurrent of transformer

就地补偿：不少于负荷的额定电流

On-spotcompensation:≥rated currentof load

线制Wiringsystem

根据是否需要滤除中性线谐波来考虑选择。

Choosing the wiring system is up to whether to filter the neutralharmonic or not.

滤波器额定补偿电流Rated compensation current

原则：根据需要治理现场谐波电流和客户需求确定要补偿谐波电流的大小

1、 改造项目：现场实际测量的工况下的谐波电流值。

2、 新建项目：根据现场谐波源的THDi（电流谐波畸变率）来估算。

Principle:According to the harmonic current and the capacity of harmonic current which is required by client.

1、  Post-reconstruction project:The harmonic current value in operating condition of actual measurement on the spot.

2、  New project:According to the THDi of on-site harmonic source toestimate.