Ankrui Active Power Filter ANAPF

Description :

　　The development and construction of the medical industry cannot be separated from electricity. The power distribution system in the medical industry is an important factor in ensuring hospital power supply. With the gradual development and progress of modern science and technology in our country, the power supply facilities of hospitals have also been greatly improved and enhanced. In the process of development, various technologies have gradually improved the power distribution system of hospitals in China. Some large hospitals are equipped with many electronic medical technology devices. The common characteristics of these devices are that they generate a large amount of harmonics during operation; The demand for power quality is very high. If there are a large number of harmonics in the power distribution system where medical equipment is located, it will cause distortion in the voltage and current waveforms, affecting the quality of the system's power supply. At the same time, it also poses a threat to other power supply and electrical equipment: shortening the service life of the equipment and interfering with the normal operation of important medical equipment. The management of power quality in hospital distribution systems has become a consideration for hospitals and design departments.

　　Ankrui active power filter ANAPF,

　　System Introduction

　　Function:

　　The power quality analysis and governance system mainly studies the elimination of reactive power compensation and harmonic governance problems in the power supply and distribution system. Its main products include active power filters, low-voltage reactive power compensation devices, static reactive power generators, hybrid dynamic filtering compensation devices, hybrid dynamic harmonic elimination compensation devices, intelligent dynamic reactive power compensation devices, harmonic protectors, etc. It is suitable for reactive power compensation, harmonic suppression, and comprehensive governance of electrical equipment in industrial, civil, and public buildings in new construction, renovation, expansion, and technological transformation projects. It can provide suitable design solutions according to the power quality problems of different industry types and load types, in order to improve power supply quality and ensure the safe and economic operation of the power system. Ankrui Active Power Filter ANAPF

　　Application location:

　　(1) Commercial center/office building (air conditioning, elevator, thyristor dimming, etc.);

　　(2) Port terminals/chemical/metallurgical/shipbuilding/papermaking/coal mines (frequency converters, etc.);

　　(3) Communication/Medical/Commercial Center (UPS, Switching Power Supply, etc.);

　　(4) Photovoltaic/charging station/chemical/metallurgical (rectifier, etc.).

　　System functions

　　ANAPF active power filter

　　The ANAPF series active power filters are connected in parallel in low-voltage distribution systems with harmonic loads, and can quickly and real-time track and compensate for dynamically changing harmonic currents.

　　The ANAPF series active power filter collects harmonic currents through a CT acquisition system, quickly calculates and extracts the content of each harmonic current through a controller, generates harmonic current commands, generates compensation currents in the opposite direction to the amplitude of the harmonic current through power execution devices, and injects them into the power system to offset the harmonic currents generated by nonlinear loads.

　　ANSVC Low Voltage Reactive Power Compensation Device

　　The ANSVC low-voltage reactive power compensation device is suitable for automatic reactive power compensation in power grids with a frequency of 50Hz and a voltage of 0.4kV; It integrates reactive power compensation and power grid monitoring. It can not only compensate for reactive power losses in the power grid by switching capacitor banks, improve power factor, reduce line losses, but also enhance the load capacity and power supply quality of the power grid; At the same time, it can also monitor the three-phase voltage, current, power factor and other electrical parameters of the power grid in real time.

　　Discrete component solution

　　The discrete component capacitor compensation scheme consists of a power factor controller, low-voltage switching switch, series reactor, low-voltage power capacitor, etc. Based on the actual situation of the power grid, taking into account both the compensation effect and cost, choose a reasonable compensation form. Fully resolve the contradiction between compensating reactive power and three-phase imbalance, as well as between three-phase compensation and cost.

　　Intelligent capacitor solution

　　The AZC series intelligent capacitors are a new generation of reactive power compensation equipment for 0.4kV, 50Hz low-voltage distribution, which is efficient, energy-saving, reduces line loss, improves power factor and power quality. It consists of an intelligent measurement and control unit, a thyristor composite switch circuit, a line protection unit, and two (△ type) or one (Y-shaped) low-voltage power capacitors. By changing the bulky and cumbersome structural mode of traditional reactive power compensation devices, the new generation of low-voltage reactive power compensation equipment has the characteristics of better compensation effect, smaller size, lower power consumption, cheaper price, more cost savings, more flexible use, easier maintenance, longer service life, and higher reliability, adapting to the higher requirements of modern power grids for reactive power compensation.

　　ANSVG Static Reactive Power Generator

　　Static reactive power generator is a new type of power electronic device used to compensate for reactive power and imbalance. It can quickly and continuously compensate for varying reactive power and negative sequence. Its application can overcome the disadvantages of traditional reactive power compensators such as LC compensators, such as slow response speed, uncontrollable compensation effect, easy parallel resonance and switching oscillation with the power grid.

　　ANSVG-S-G Intelligent Dynamic Reactive Power Compensation Device

　　Intelligent dynamic reactive power compensation device is a new type of power electronic device used to compensate for reactive power, improve power factor, and achieve reactive power compensation effect; The intelligent control system actively adjusts the output of the module based on the linear dynamic requirements of the system; The ANSVG-S-G machine is mainly composed of the ANSVG-S-G module, intelligent controller, and LC module; Capable of compensating for larger capacity reactive power, the entire machine achieves human-machine interaction through a 7-inch touch screen. The touch screen communicates with the ANSVG-S-G module through RS485.

　　ANSVG-S-A series hybrid dynamic harmonic elimination compensation device

　　At present, based on the development of the industry and market demand, the ANSVG-S-A series hybrid dynamic harmonic elimination compensation device applies new technologies, combining the economic efficiency of SVC and the effectiveness of APF filtering, breaking through traditional reactive power compensation technology, and achieving harmonic control and reactive power compensation while effectively reducing costs.

　　The ANSVG-S-A series hybrid dynamic harmonic elimination compensation device is mainly used to compensate for reactive current, harmonic current, and unbalanced current in the power grid, in order to achieve the goals of improving power efficiency, energy conservation, and improving power quality.

　　ANSVG-G-A hybrid dynamic filtering compensation device

　　The hybrid dynamic filtering compensation device can not only compensate for reactive power but also manage system harmonics. The device is connected in parallel to the distribution system to monitor the current component of the system in real time. Through control calculations and logical changes, the required reactive and harmonic components of the system are calculated. Then, the power electronic converter generates the required reactive and harmonic currents in real time and injects them into the distribution system, achieving intelligent compensation and harmonic management.

　　Equipment selection

　　ANAPF harmonic filtering device selection Ankerui harmonic to the power supply system are as follows:

　　1) Harmonics cause additional harmonic loss to the components in the public power grid, which reduces the efficiency of power generation, transmission and electrical equipment. A large number of third-order harmonics over the neutral line will cause overheating and even fire.

　　2) Harmonics affect the normal work of various electrical equipment. The influence of harmonics on the motor not only causes additional loss, but also causes mechanical vibration, noise and overvoltage, which causes serious overheating of the transformer. Harmonic causes capacitors, cables and other equipment overheating, insulation aging and shortened life, so that the damage.

　　3) Harmonics will cause local parallel vibration and series resonance in the public power network, thus amplifying the harmonics, which greatly increases the harm of the above 1) and 2), and even cause serious accidents.

　　4) Harmonics will lead to misoperation of relay protection and automatic devices.

　　5) Harmonics will interfere with adjacent communication systems, and light ones will produce noise and reduce communication quality; Severe cases lead to letter opening, loss, so that the communication system can not work normally.

　　Active filtering and intelligent capacitive technology

　　The concept of active power filter has been put forward in the early 1970s, but due to the influence of the technical conditions at that time, the circuit structure that has been planned has not been implemented. Since the 1980s, there have been numerous articles on the technology and improvement of source filters.

　　In the development and operation of hospitals, it is necessary to adopt high-tech and other technological means to meet the requirements of hospital power supply facilities, gradually achieving scientific and energy-saving electricity use in hospitals, which can reasonably reduce hospital costs. The hospital power supply and distribution system is the basic platform for hospital work, including various nonlinear and time-varying electrical and medical equipment. The harmonic interactions they generate, if not addressed, will not only affect the normal operation of equipment, but in severe cases may even threaten the safety of patients' lives. Therefore, it is imperative to conduct in-depth analysis and research on the power quality management of hospital power supply and distribution systems.

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