With the rapid development of the national economy and the improvement of people's living standards, the demand for electricity in society is increasing day by day, and higher requirements are put forward for the reliability and quality of power supply. Due to the continuous increase in load, the demand for reactive power in the power grid has also increased. Reactive power, like active power, is an essential part of ensuring the quality of electrical energy and voltage in the power system, reducing network losses, and ensuring safe operation. Solving the problem of reactive power compensation is of great significance for reducing losses and saving energy, which is the reason why current power supply systems prioritize it.
The XJD-W low-voltage dynamic reactive power compensation device is suitable for automatic reactive power compensation in urban distribution networks with a frequency of 50Hz and a voltage of 0.4kV; It adopts a series of leading domestic technologies and the latest components, integrating reactive power compensation and grid monitoring. It can not only compensate for reactive power losses in the grid, improve power factor, reduce line losses, but also enhance the load capacity and power supply quality of the grid; At the same time, it can also monitor real-time operating data such as three-phase voltage, current, and power factor of the power grid, and complete comprehensive management of the entire low-voltage distribution line, including monitoring, analysis and processing, and report output, providing first-hand data for the scientific management of low-voltage distribution lines.
The low voltage dynamic reactive power compensation device TSF is controlled by an intelligent controller to dynamically switch the thyristor filter, integrating grid harmonic filtering, reactive power compensation, and power quality detection. It can filter out grid harmonics to meet national standards, compensate for reactive power losses in the grid in real time, improve power factor, and reduce line losses, thereby improving the load capacity and power supply quality of the grid. At the same time, TSF can also monitor real-time operational data such as three-phase voltage, current, frequency, active power, reactive power, power factor, harmonics, etc. of the power grid, which is suitable for situations with high load harmonic content, low power factor, and large load fluctuations. The TSF device has complete protection measures such as overvoltage, undervoltage, phase loss, overcurrent, short circuit, transient overvoltage, sound and light alarm, and there is no problem of reactive power reverse and harmonic amplification.
Field of use
Main application areas: TSF devices play a significant role in quickly compensating reactive power and filtering out harmonics. They can minimize the harm of harmonic sources, improve power quality, and fully utilize system capacity. Typical applicable objects include the following types of harmonic source loads.
Main technical parameters: rated voltage: 0.4-1kV;
Rated capacity: 100-1500kvar (depending on specific circumstances)
Quickly perform dynamic compensation based on system reactive power changes to improve power factor;
Filter out harmonic currents;
Fast response time (20-40ms);
Using grouped switching capacitors results in minimal impact on the system during the switching process;
The entire device provides comprehensive protection functions, ensuring safety and reliability.
（1） Intelligent building
In the power distribution of commercial buildings and high-rise residential buildings, modern power electronic equipment (adjustable speed motors, air conditioners, online UPS, switch power supplies, color TVs, laser printers, etc.) are nonlinear loads. Although the load impact is small, the harmonic currents generated are very serious.
（2） Electric arc furnace
Electric arc furnaces are connected to the power grid as nonlinear and impact loads. Causing serious three-phase imbalance in the power grid, resulting in negative sequence current; High order harmonics are generated, and there is a common coexistence of even and odd harmonics, which makes voltage distortion more complex; There is severe voltage flicker; Low power factor.
（3） Medium frequency furnace
The odd harmonic current generated by the intermediate frequency furnace during operation is severe.
（4） AC/DC drive motors and rolling mills
Voltage fluctuations in the power grid result in a decrease in power factor and the generation of odd harmonics, causing voltage distortion in the grid.
（5） Welding machine group
When the welding machine is a single-phase load, the third harmonic current is large, the waveform distortion is severe, the three-phase current is extremely unbalanced, and the voltage flicker is severe.
Location：
Return to List
