1、 Working principle
The STD CSVG series hybrid dynamic reactive power compensation device integrates the characteristics of dynamic reactive power compensation (SVC) and static reactive power generator (SVG), and can comprehensively compensate for reactive power, harmonics, and three-phase current imbalance simultaneously, effectively improving power quality while reducing costs.
System diagram of hybrid dynamic reactive power compensation device
2、 Performance characteristics
Ø Taking power factor as the control objective, that is, to achieve dynamic and accurate compensation for the reactive power of the system while ensuring that the power factor meets the requirements.
Ø It can store the operating data of the past year, such as system A/B/C single-phase power factor, load A/B/C single-phase power factor, system A/B/C single-phase active power, number of capacitor switching times per group, and device operation events.
Ø Historical data can be viewed through the human-machine interface, with two types of data available: list and curve graphics. The above data can be downloaded from a USB flash drive for PC viewing.
Ø After the power grid is cut off and restored, the equipment has the function of self recovery operation, and the fault blocking of SVG does not affect the switching of capacitors.
Ø It has RS485, GPRS, WIFI, and USB communication interfaces to facilitate users to connect device operation data to the monitoring system.
Ø It has protection functions for overvoltage/undervoltage, overcurrent, short circuit, phase loss, and system self-diagnosis.
3、Model Description and Appearance
Model Description
Hybrid dynamic reactive power compensation device
4、 Technical parameters
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380Vseries |
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Altitude |
≤1500m |
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Ambient temperature |
-20～+50℃ |
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Relative humidity |
≤90%，with a monthly minimum temperature of25℃and no condensation on the surface |
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Pollution level |
Below Level III |
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Working voltage |
AC380V±20% |
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Working frequency |
50Hz±5% |
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Compensation capacity |
200kvar、250kvar、300kvar、350kvar、400kvar |
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Grid structure |
Three phase four wire |
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Compensation capacity |
Capable of three-phase co compensation and split phase compensation, with a split phase compensation capacity not less than 40% of the overall capacity |
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Response speed |
≤10ms |
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Reactive power compensation rate |
≥99% |
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Harmonic compensation rate |
Under sufficient capacity, the compensation rate for 2nd to 25th harmonics is ≥ 90% |
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Three-phase imbalance compensation |
Under sufficient capacity, the imbalance of three-phase incoming current after compensation is ≤ 2% |
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Protection level |
Not less than IP30 |
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Cooling method |
Forced air cooling |
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Running noise |
＜65dB |
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Protection function |
Equipped with overvoltage/undervoltage, overcurrent, short circuit, phase loss protection functions and system self-diagnosis functions |
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Display |
Adopting a 7-inch Chinese LCD display screen and a user-friendly human-machine operation interface, it displays device operation data and allows users to set basic parameters, view information, and other operations |
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Communication |
Equipped with RS485, GPRS, WIFI, and USB communication interfaces, it is convenient for users to connect device operation data to the monitoring system |
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Data storage |
It can store the operating data of the past year, such as system MB/C single-phase power factor, load ABC single-phase power factor, system MB/C single-phase active power, number of capacitor switching times per group, device operation events, and can be downloaded to the USB flash drive through the UB port for data analysis |
5、Specification and model
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Whole cabinet device model |
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Common models |
Compensation capacity (kvar) |
System voltage (V)） |
Overall dimensions: Width * Depth * Height (mm)） |
Cooling method |
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STD CSVG-0.4-200kvar-0.48 |
200 |
400 |
1000*1000*2200 |
Forced air cooling |
|
STD CSVG-0.4-250kvar-0.48 |
250 |
400 |
1000*1000*2200 |
Forced air cooling |
|
STD CSVG-0.4-300kvar-0.48 |
300 |
400 |
1000*1000*2200 |
Forced air cooling |
|
STD CSVG-0.4-350kvar-0.48 |
350 |
400 |
1000*1000*2200 |
Forced air cooling |
|
STD CSVG-0.4-400kvar-0.48 |
400 |
400 |
1000*1000*2200 |
Forced air cooling |