Intelligent Reactive Power Compensation Controller
YD-8DK
The intelligent reactive power compensation controller is a new type of power distribution measurement and control equipment that integrates data acquisition, reactive power compensation, and power grid parameter analysis. It is suitable for monitoring and reactive power compensation control of AC 0.4kV, 50Hz low-voltage power distribution systems.
The intelligent reactive power compensation controller uses a high-speed digital signal processor as its core, employs AC sampling, and features a 256x128 dot-matrix LCD screen as its human-machine interface. It includes power distribution monitoring, reactive power compensation, harmonic analysis, and an adaptive frequency algorithm. The input signal varies between 45Hz and 55Hz.
Operating Conditions:
Air Temperature: Air temperature not exceeding +65℃ and not lower than -25℃.
Atmospheric Conditions: Air humidity not exceeding 90% at 20℃; higher relative humidity is permissible at lower temperatures.
Altitude: Not exceeding 2500 meters.
Environmental Conditions: The surrounding medium is free from flammability and explosion hazards, corrosive gases, conductive dust, and rain/snow erosion; the installation site must not experience severe vibration.
Terminal Functions:
1. Real-time Data Monitoring
Voltage, Current, Power Factor
Switching Status of the Capacitor Bank
Active Power, Reactive Power
Total Harmonic Distortion (THD) of Voltage, Total Harmonic Distortion (THD) of Current
3rd, 5th, 7th, 9th, 11th, 13th, 15th, 17th, 19th, and 21st Harmonic Distortions of Current
2. Reactive Power Compensation
The sampled physical quantity is reactive power; there is no switching oscillation. Δ-type compensation method
3. Protection functions
Features self-test reset and automatic reset functions.
Features undervoltage and overvoltage protection functions.
Features low current protection function.
Features total harmonic distortion (THD) over-limit protection function.
1. Basic parameters
power supply voltage | AC 380V±20% |
Sampling voltage | AC 380V±20% |
Power frequency | 50 Hz ±5% |
Sampling current | 0～5A |
Maximum power consumption of the whole machine | 8W (depending on the power of the switching device being controlled) |
Control output contacts | twenty four Road D Type: Each DC 12V×20 mA (+12V) (output) J Type: 220V / 5A (Relay Output) |
2. Measurement accuracy
electricity Pressure | ±0.5% |
electricity flow | ±0.5% |
Active power | ±2.0% |
Reactive power | ±2.0% |
Power factor | ±1.0% |
3. Parameter Settings
Parameter name | initial value | Parameter range | Detailed Explanation |
Compensation parameters | | | |
CT Transformer | 0001 | 1～2000 | default 1 In power factor mode , setting the transformation ratio switches to reactive power mode. The real-time data page will display the reactive power deficit parameter page. If the current transformer is... 500 to 5. Then the machine is set to 100 (using a ratio) |
Investment threshold | 0.95 | 0.80-1.00 | The set value represents the input threshold value. |
Removal threshold | 0.99 | 0.9 to -0.81 | The set value represents the cutoff threshold value. |
12V Output | | | |
Delayed input | 010.00 | 000.02-250 | Delay time settings: such as 001.00 yes 1 Seconds, 000.02 yes 20 millisecond |
Delayed resection | 005.00 | 000.02-250 | Resection delay time setting: such as 001.00 yes 1 Seconds, 000.02 yes 20 millisecond |
Relay output | | | |
Delayed input | 030 | 1-250 | Delay time settings: such as 001.00 yes 1 Second |
Delayed resection | 030 | 1-250 | Resection delay time setting: such as 001.00 yes 1 Second |
Test mode | automatic | Automatic/Manual | Switch between automatic and manual casting. |
Protection parameters | | | The "Enable/Disable" option after the parameter enables or disables the function. |
Overvoltage protection | 450.0 | 400-480 | Overvoltage protection: When the mains voltage exceeds the set value, the capacitor is disconnected. |
Overvoltage alarm | 425.0 | 380-460 | Overvoltage alarm: Indicates a current voltage alarm and maintains the current capacitor state. |
Undervoltage protection | 360.0 | 280-380 | Undervoltage protection: When the mains voltage is lower than the set value, the capacitor is disconnected. |
Undercurrent protection | 0100 | 50～1000 | Undercurrent protection: such as 0100 yes 100 When the current in milliamperes is less than the set value, the capacitor is disconnected. |
Voltage harmonics | 05.0 | 2～60 | Voltage harmonic protection: When the total harmonic distortion of the voltage exceeds the set value, the capacitor is disconnected. |
Current harmonics | 50 | 2-99 | Current harmonic protection: When the total harmonic distortion of the current exceeds the set value, the capacitor is disconnected. |
Capacitor Configuration | | | |
Total number of paths | twenty four | 0-24 | Number of common capacitor banks: One common capacitor bank occupies 1 Groups, maximum 24 Group |
Common compensation capacitor Capacity configuration | 20.0 | 1-99 | Common compensation capacitor encoding: such as the common compensation capacitor number 1 For 15Kvar, the 2 Units digit 20 Kvar 01 - Total capacity = 15, 02 - Total capacity = 20 And so on. |
Clock settings | | | |
Date | | YY - MM - DD | Set date |
Hours, minutes, seconds | | Hh : mm : ss | Set time |
Communication parameters | | | |
Baud rate | 4800 | / | 1200 , 2400 , 4800 , 9600 |
Check bit | None | / | None , Even , Odd |
Communication address | 1 | 1-99 | Host computer communication address |
