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Functions of Static Reactive Power Generator
The static reactive power generator, also known as the reactive power compensation device, is mainly composed of three basic functional modules, namely: detection module, control operation module, and compensation output module. Its working principle is to detect the current information of the external CT detection system, and then analyze the current current information, such as PF, S, Q, etc. through the control chip; Then, the controller provides the compensated driving signal, and the compensation current is sent out by the inverter circuit composed of power electronic inverter circuits. The static reactive power generator uses switchable power electronic devices to form a self commutating bridge circuit, which is connected in parallel to the power grid through reactors. The amplitude and phase of the output voltage on the AC side of the bridge circuit are appropriately adjusted, or the AC side current is directly controlled. Quickly absorb or emit the required reactive power, achieving the goal of quickly and dynamically adjusting reactive power. As an active compensation device, it can not only track the impulse current of impulse loads, but also track and compensate for harmonic currents.
09
2022
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03
Shanghai Huakun Electric Appliance Co., Ltd. has passed the supplier qualification and capability verification of State Grid Hebei Electric Power Co., Ltd
Shanghai Huakun Electrical Appliances Co., Ltd. closely cooperates with well-known universities and professional research institutes in China, and is an intelligent electrical professional company that integrates design, manufacturing, and sales. The company has more than 20 years of production experience, mature processes, complete testing equipment, and stable and reliable quality. In July 2018, Shanghai Huakun Electrical Appliances Co., Ltd. passed the supplier qualification and capability verification of State Grid Hebei Electric Power Co., Ltd.
13
2018
08
Electrical Encyclopedia: Numbering Methods for Electrical Secondary Circuit Connections
For the convenience of installation, operation, and maintenance, all equipment connections in the secondary circuit must be numbered, referred to as the secondary circuit label. The label generally uses numbers or a combination of numbers and text, indicating the nature and purpose of the circuit. Basic principles for labeling secondary circuits:
20
How to choose an active filter manufacturer correctly?
The active filtering device is a closed indoor device that detects the waveform of the load current in real-time to obtain the harmonic current component that needs to be compensated, and reverses it. By controlling the triggering of the IGBT, the reverse current is injected into the power supply system to achieve the function of filtering (offsetting) harmonics and ensure the safe and effective operation of the power supply system. The active filtering device is required to have advanced technology, mature and reliable production process, and easy installation and maintenance. The main technical indicators of active filters include:
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11
How can low-voltage electrical appliances connect with the development of smart grids and new energy?
At present, the North Star transmission and distribution grid is entering an important period of smart grid construction. China's urbanization construction is rapidly progressing, and the intelligent construction of urban and rural distribution networks will also be fully carried out. The smart grid, intelligent complete equipment, intelligent distribution, and control system will usher in a golden development period. At the same time, a large number of new energy generation continues to grow, bringing opportunities and challenges to China's low-voltage electrical industry. The rapid development of new energy provides an opportunity for the intelligent development of the low-voltage electrical industry. Low voltage
2023
The working principle of active filters
Active filter is a new type of harmonic suppression specialized equipment made using modern power electronics technology and digital signal processing technology based on high-speed DSP devices. It consists of two main parts: the instruction current operation circuit and the compensation current generation circuit. The instruction current operation circuit monitors the current in the circuit in real time,
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