(ENG) Successful Case – Power Management Solution for Thin Film Industry
When the filter device failure caused by the chain reaction, the power factor of the power supply system is not up to the standard; as a result, there would be perplexities in high electricity cost, serious economic losses, and others. How to solve it?
BACKGROUND
A film group enterprise, mainly produce ecological BOPP film which are widely used in clothing, food, textiles, silk, and others, is a leader in the film industry.
KEY POINT(S)
1.Equipment problem(s):
Since purchasing the active filter cabinet, this equipment had been worked a long period. So, it has frequently unstable operation and failures nowadays.
2.Unmanageable harmonics:
Because of stop processing the filter device, there are much harmonics cannot be processed.
3.Damaged capacitor cabinet:
As to the safety, the components of capacity cabinet always have been damaged in which it would lead the great security risks.
4.High electricity charges:
As to these factors above, finally, the power factor of the power system cannot be satisfied with the standard of the power supply department. Thus, to pay extra electricity charges is the mainly economic losses.
PROVIDED PROJECT(S)
In view of the above, this enterprise invited our company to conduct the quality of electrical energy test. According to the test data, the production line #1 and #2 both do have issue about the lower power factor and serious harmonic distortion. As to combined with rich experience, we, Shanghai Wenlida Technology Co., ltd， determined to assemble the active filter device and compensation device in this condition. Among them, the device, WT-SVG4L-0.4-750, divided by three cabinets (capacity: 250kvar); other device, WT-APF4L-0.4-900, divided by two cabinets (capacity: 450A). Certainly, based on the On-site condition, the wiring method of the SVG cabinet and APF cabinet can be flexibly chose by cooperative enterprise.
PRODUCT INTRODUCTIONS
As to WT-APF, this device can be efficient in harmonic control and treat with having a ultra wide filtering range (2nd~50th) and shorter response time period (<10ms). And then, as high filtering efficiency, the single harmonic filter rate is not less than 95% which ensure the harmonic control result to meets the standard.
As to WT-SVG, according to the system requirements, this device can automatically output the reactive power. Also, as required by system, this device can carry out various types of compensation methods to ensure that the system power factor is not less than 0.95. During operating compensation period, WT-SVG can compensate the 3rd~13th range harmonics at same time. As a result, its quality of the power supply and power efficiency are all improved.
THE THIRD GENERATION PRODUCT OF WT-APF/SVG SERIES
On the other hand, the power quality management device, the WT-APF/SVG series, is developed the third generation product of filtering harmonics by our company. To design and use in modular structure (support customized service) is completely different than before. There are some advantages to show it is the best choice for power quality purification below:
- Better heat dissipation performance:
- More than 15K switching frequency
- Fast reaction speed
- Nice waveform characteristics
- Based on the instantaneous reactive power theory, to adopt detection technology and automatically track harmonic changes in power grid.
- High controllability and fast response
- Have a good filtering and compensation effect for all kinds of fast transient impact loads without resonating in system
- Be Suitable for various working conditions
Technical Parameters:
| Item Name | Specifications | |
| 1. | Working voltage (V) | AC400V (-15%～+15％) |
| 2. | Working frequency (Hz) | 45Hz～66Hz |
| 3. | Harmonic compensation range | APF filtering range: 2nd～50th SVG filtering range: 3rd～13th |
| 4. | The capability of the reactive power compensation | -1～+1, can be adjustable |
| 5. | Efficiency | ≥97% |
| 6. | Noise (1m distance from the device) | ≤60dB，iron-silicon reactor |
| 7. | Power losses | As full-load (100%), <3％ rated capacity |
| 8. | Enclosure IP grade | ≥IP20 |
IMPLEMENTATION EFFECT(S)
After the all-round installation and management by our team, to ensure that the system power factor reaches the best has been satisfied. Indeed, the problem of paying extra electricity charges is completely solved. (maybe having electricity incentive) Eventually, to effectively solve the harmonic pollution of the system voltage / current, to improve the quality of the system power supply, to rise the production safety of enterprise are obvious.
CONCLUSION
To face the new of growth in power demand and power loads, Shanghai Wenlida Technology Co., Ltd, is as an expert with excellent technical strength and rich experience in the field of power quality, is committed to tailor-made efficient and reliable solution of power quality for customer.
