The low-voltage reactive power compensation comprehensive measurement and control device is a new technology product developed by our company. It adopts a series of leading domestic technologies and electronic components, integrating reactive power compensation controllers with power grid detection instruments. It can not only be connected to the reactive power compensation device developed by our company, but also improve the power factor of the power load and system, reduce the reactive power loss of equipment, stabilize the power grid voltage, improve the operation quality and load capacity of the power grid, and integrate real-time monitoring of three-phase voltage, current, power factor, active power, reactive power, voltage harmonics, current harmonics and other electrical parameters in the power grid

Low voltage reactive power compensation comprehensive measurement and control device

1、 Main functions

1. Real time measurement function

① Three phase voltage, three-phase current;

② Three phase active power, three-phase reactive power, and three-phase power factor;

③ Total active power, total reactive power, and total power factor;

④ 3-25th harmonic of three-phase voltage and 3-25th harmonic of three-phase current;

⑤ Real time waveform diagram of three-phase voltage and current;

⑥ Three phase voltage and current harmonics 3-25th order bar chart;

2. Intelligent networking

Automatic networking can be achieved through bus mode, and up to 32 integrated fast harmonic suppression reactive power compensation devices can be accommodated without manual intervention.

3. Parameter settings

You can set some parameter values through buttons.

4. Automatic/Manual Control

The system can be freely switched between automatic switching mode or manual control mode. In automatic mode, the program automatically executes the switching operation, while manual mode requires manual control of the reactive power compensation device for switching.

5. Protection function

Overvoltage, undervoltage, phase loss, harmonic blocking, switch failure.

6. Human computer interaction

Real time display of various electrical measurement data, parameter information, and operating conditions on the display panel.

2、 Main technical indicators

1. Environmental conditions

Environmental temperature: 25-55 ℃

Relative humidity: 40 ℃ 20～90 %

Altitude: ≤ 200Om

2. Power supply conditions

Voltage: 440V (-30%~+20%)/690V ± 20%

Rated current: 5A

Power frequency: 50 ± 1.5HZ

3. Measurement accuracy

Voltage: Level 0.5 (within the range of 80% to 120% Un)

Current: Level 0.5 (within the range of 20% to 200% In)

Level 1 (within the range of 5% to 20% In)

Reactive power: Level 1 (within the range of 20% to 200% In at Un)

Active power: Level 1 (within the range of 20% to 200% In at Un)

Power factor: ± 0.01 (within the range of 20% to 200% ln at Un)

Current sensitivity: 100 mA, no shaking

4. Protection requirements

The protection level of the shell shall not be lower than the IP30 requirement in GB4208;

Electromagnetic compatibility: interference from voltage and frequency fluctuations, surges, electrical fast transient pulse trains, radio frequency electromagnetic field radiation, electrostatic discharge, meeting EMC4 protection requirements.

5. Compensation response

Response time: The level mode should not exceed 40ms, and the bus mode should not exceed 60ms.

6. Control capacity

Bus mode: ≤ 32 channels

Level mode: ≤ 24 channels