In communication circuits, both active and reactive power need to be supplied to the load by the power source. Active power refers to the electrical power required to keep the electrical equipment operating normally, denoted by the letter "p", with the international unit being watts (W). Usually, we use kilowatts "KW" to represent active power. Reactive power, on the other hand, refers to the power exchanged between the power source and the electrical equipment, exchanged without consumption, known as reactive power, denoted by the letter "Q", with the international unit being volt-ampere reactive (var). Typically, we use kilovars "kvar" to represent reactive power.

1. Compensate for the reactive power consumed by itself, improve power factor;

2. Increase the transmission capacity of the power grid, improve equipment utilization rate;

3. Reduce line losses, transformer active losses, and reduce enterprise electricity costs; stabilize the voltage at the equipment usage end and power grid, improve power supply quality.

Under normal circumstances, some sensitive devices not only need to obtain active power from the power grid, but also need to obtain reactive power for their own use. Obviously, it is unreasonable for all these powers to be provided by the power grid and transmitted over long distances. It is usually impossible, which will lead to problems such as excessive current carrying capacity of transmission lines, high losses, and voltage drop at the end. The reasonable method is for devices that need to consume reactive power to generate reactive power at the power consumption end, which is what we often refer to as reactive power compensation. There are many methods for this, such as using phase-shifting devices, synchronizing asynchronous motors, etc., but using power capacitors as compensating devices is currently the most widely used compensation method at home and abroad. This compensation method is characterized by easy installation, short manufacturing cycle, strong economic practicality, convenient operation and maintenance, and low self-loss.

Elliptical and square self-healing low-voltage parallel power capacitors

Capacitor special reactor

The "BSMJ" series of self-healing low-voltage parallel capacitors adopts advanced polypropylene metalized thin film as the dielectric material, introduces foreign advanced technology and equipment, strictly follows the national IEC standards for production; mainly used for improving power factor in low-voltage power grids of 1200V and below, reducing line losses, improving power quality, and is a newly recommended energy-saving product by the country. The company relies on technological advantages, strictly follows the ISO9001 quality system management, with high-quality products at competitive prices and attentive service, with a warranty period of one and a half years, significantly higher than domestic products in the same industry.

When compensating capacitors for reactive power, they are often affected by harmonic currents, closing surge currents, and operating voltage during the operation, causing damage to the capacitors and reducing the power factor. Therefore, it is necessary to install series reactors at the front end of the capacitors to suppress and absorb harmonics, protect the capacitors, avoid the impact of harmonic voltages and currents, improve power quality, increase system power factor, and extend the service life of the capacitors.

HW-500APF Active Power Filter

JKW(LCD type) Reactive Power Compensation Controller

JKWS/F series intelligent reactive power compensation controller is a new type of distribution measurement and control equipment that integrates data acquisition, reactive power compensation, and power grid parameter analysis functions. It is suitable for monitoring and reactive power compensation control of AC 0.4KV, 50Hz low-voltage distribution systems.The JKWS series intelligent reactive power compensation controller uses a high-speed digital signal processor as the core, adopts AC sampling, and the human-machine interface is a 128X64 dot matrix large-screen LCD display. It has distribution monitoring, reactive power compensation, harmonic analysis, adaptive frequency algorithm, and input signals that vary between 45Hz and 55Hz.

The HW-500APF series active power filter collects current signals in real time through external current transformers, separates the harmonic components through internal detection circuits, generates compensating currents with equal magnitude and opposite phase to the harmonics in the system through IGBT power converters, and achieves the function of filtering out harmonics. In addition, the HW-500APF series active power filter can also compensate for leading or lagging reactive currents based on the actual current phase to improve power factor and compensate for reactive power in the power grid.

HWJBCYX

Intelligent Harmonic Suppression Type Power Capacitor

HW-007 SeriesLCD Control Screen

The HWJBCYX series is a new product developed by our company independently based on intelligent capacitors, which can compensate and suppress harmonics. It is a new generation of filtering compensation equipment for efficient energy saving, harmonics suppression, and power factor improvement in 0.4kV low-voltage distribution networks. It replaces traditional cabinet devices composed of intelligent reactive power compensation controllers, fuses, AC contactors, filtering reactors, and capacitors. This series of products are developed for situations where conventional intelligent capacitors cannot operate normally due to high harmonic content in the power equipment network. The basic principle is to add a reactor with a certain reactance between the power capacitor and the control unit, which can suppress inrush current and effectively absorb some 3rd, 5th, 7th, and higher-order current harmonics. It is mainly used in power grid environments where the current harmonic content is less than 42%, which can meet the requirements of reactive power compensation, improve power factor, absorb the impact of low and high-order harmonics on the system, and improve power quality.

HW-007 controller, with voltage, current, and temperature acquisition functions, the collected data can obtain active power, reactive power, and harmonic content through FFT operation. According to the nature of reactive power

, SVG and intelligent capacitors can be controlled for switching simultaneously to compensate for reactive power and improve power factor.