Active filters Harmonic current reduction reactive energy compensation
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- Supplier: Anhui Zhongdian Electric Co. Ltd.
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Product Overview
Description
Product Description
APF active power harmonic filters
The wide application of nonlinear power equipment produces a lot of distorted current harmonics, which cause harmonic voltage when flowing in power grid. This harmonic pollution threatens the safety and stability of power system seriously. Together with electromagnetic interference, power factor reduction, are the three major public hazards for power system.
ZD-AMS active power filter(APF/AHF for short) is a perfect comprehensive solution to power quality problems with power grid such as harmonic wave(can filter 2nd to 50th harmonic interference completely), reactive power, and 3 phase load unbalance.APF is connected in parallel in power grid, to detect the harmonic wave in power grid in real time, generate the reverse-phase compensation current through the converter, and dynamically filter the harmonic wave in power grid. The operation of APF is unaffected by power grid structure and load type, and it will not produce harmonic oscillation with the system, thus perfectly realizing harmonic wave control of various loads. APF can also realize dynamic reactive compensation, and control the capacitor switching, to improve the power factor of power grid. Meanwhile, APF has the function of controlling the 3 phase load current unbalance, thus comprehensively solving various power quality problems with power grid.
Rated voltage | AC, low voltage | |
Operating frequency | 50Hz/60Hz | |
Electrical connection | Three-phase four-wire | |
Filter range | 2~50-order harmonics (the order can be chosen) | |
Filtering control effeciency | Harmonic filtering rate ≥85%; THDi<5% after systematic control | |
Compensation current of each cabinet | 30~600A | |
Compensation mode | Including: Harmonic compensation, reactive compensation, and three-phase load unbalance compensation function; one or more compensation modes could be set. | |
Three-phase unbalance compensation effect | The degree of unbalance of three-phase active current of the system is less than 5% after compensation within the rated capacity. | |
Response time | <7ms | |
Active loss of system | <3% | |
Output current limit | Automatically limited within 100% of rated capacity to output | |
Number of units connected in parallel | ≤10 units (single CT) | |
MTBT | >100,000 hours | |
Controller | IGBT | |
Control algorithm | Self-adaptive control algorithm | |
Communication mode | Adopt Modbus remote communication protocol; communication interface adopts RS485 and CAN bus, supporting mobile phone APP operation. | |
Level of protection | IP20 | |
Noise | <60db (<45db during low-speed operation) | |
Installation method | Module embedded installation | |
Ambient temperature | -20~55℃ | |
Relative humidity | Maximum 95%, without condensation | |
Altitude above sea level | ≤1,500m at rated capacity; |
APF Working Principle
APF Series is connected in parallel with non-linear loads, and uses one set of current transformers (CT) to detect the load current. It calculates each order harmonic current , and then generates a compensating current with the same amplitude but opposite phase angles to the detected harmonic current, which cancels out the original load harmonics.
The APF not only eliminates harmonic current from the load side, but it also mitigates harmonic voltage caused by harmonic currents. The APF system can also improve power factor (PF) and correct load imbalances in the power system.
Main function
AHF power quality analysis and solution equipment
◆Flitering harmonic pollution.
◆Dynamic reactive power compensation.
◆Correct 3 phase unbalance.
Central Mangement
Reference Table of Model Selection for Central Management
AHF Configuration Capacity (A) | |||||||||
Manufacturing factory/ New energy/ Automobile | Performing arts center /Silicon manufacture / Oil exploitation | Chemical | |||||||
THDi | 10% | 15% | 20% | 25% | 30% | ||||
200 | 35 | 50 | 50 | 60 | 100 | ||||
250 | 35 | 50 | 75 | 75 | 100 | ||||
315 | 50 | 60 | 100 | 100 | 125 | ||||
400 | 50 | 75 | 100 | 125 | 150 | ||||
500 | 60 | 100 | 125 | 150 | 180 | ||||
630 | 100 | 125 | 160 | 200 | 250 | ||||
800 | 100 | 150 | 200 | 250 | 300 | ||||
1000 | 125 | 200 | 250 | 300 | 350 | ||||
1200 | 160 | 250 | 300 | 400 | 450 | ||||
1600 | 200 | 300 | 400 | 500 | 550 | ||||
2000 | 250 | 360 | 500 | 600 | 700 | ||||
2500 | 300 | 450 | 600 | 700 | 850 | ||||
Design Scheme
Data Required For Design
1.Rated voltage of power system
2.Total volume of harmonic needed for compensation within power system
3.Compensation capacity required by power system
4. Installment requirements and cable arrangement
2.Total volume of harmonic needed for compensation within power system
3.Compensation capacity required by power system
4. Installment requirements and cable arrangement
Certifications
Factory
Our Service
Pre-Sales Service
* Inquiry and consulting support.
* Sample testing support.
* View our Factory.
After-Sales Service
* Training how to instal the machine, training how to use the machine.
* Engineers available to service machinery overseas.
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