ANAPF intelligent filtering compensation device chooses Ankrui

Description :

　　ANAPF intelligent filtering compensation device selects Ankerui harmonic component hazard

　　The harm of harmonic component is multifaceted, mainly manifested in the following aspects:

　　1) The harmonic component causes additional harmonic loss to the components in the power network, reduces the efficiency of power generation, transmission and electrical equipment, and increases the loss of the system. (2) Harmonics will cause local parallel resonance or series resonance in the power grid. When resonance occurs, the harmonic component will be amplified several times or even dozens of times instantly. At the same time, a large number of third harmonics flowing through the neutral line will make the line overheat, or even fire, seriously affecting the safety of power grid operation. (3) Harmonic components affect the normal work of various electrical equipment in the system, such as capacitors, cables and other equipment overheating, insulation aging, life shortening and even damage; Harmonics will also cause mechanical vibration, noise and overvoltage of the motor, which will not only cause serious overheating of the motor, but also increase the additional loss of the motor. (4) Harmonics will not only lead to the misoperation of the relay protection and automatic devices in the system, but also make the secondary measuring instrument is not accurate. (5) Harmonic component will produce signal interference to the nearby communication system. At the light level, it will produce noise and reduce the communication quality; at the serious level, it will lead to the loss of communication data and the system can not work normally. (6) Harmonics will cause the temperature of equipment and materials to rise, which will lead to additional loss. Each temperature rise of 1 ° C, the motor build automatic environment, with the support of science and technology, to ensure the development direction of distribution network automation. Practice shows that distribution automation and intelligentization can greatly improve the safe operation level of distribution network, improve the quality of power supply, reduce loss and save energy, and make full use of the capacity of existing equipment to reduce people's labor intensity.

　　The supporting harmonic and negative sequence control scheme is designed, constructed and put into operation at the same time with the project in accordance with the national quality standard of electric energy and the principle of "who pollutes, who controls". It is the responsibility of the power company to control the impedance level of the line, provided that the harmonic current injected into the network by the user is qualified.

　　Interharmonic refers to the periodic AC component by Fourier series decomposition, resulting in a frequency not equal to an integer multiple of the fundamental frequency of the component. Interharmonic voltage inclusion rate: 0.16% ~ 0.2% for frequency < 100 Hz, 0.4% ~ 0.5% for frequency between 100 ~ 800 Hz. It also seriously affects the power quality.

　　The reasons for inter-harmonics are as follows: (1) Current converter: due to three-phase asymmetry of load or trigger Angle error, the current converter will generate non-characteristic harmonic spectrum in the operation process. (2) AC arc furnace: typical inter-harmonic generation source, spectrum belongs to continuous spectrum. As a matter of fact, general impact loads produce inter-harmonics. (3) on and off control of electrical equipment: the working voltage needs to be on and off control or adjustment of equipment, in the work will produce inter-harmonic, such as electric oven, furnace, welding machine, on and off control of the voltage regulator.

　　Hazards of

　　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.

　　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 intelligent filtering compensation device chooses Ankerui Voltage dip or drop

　　Voltage sag or drop refers to the phenomenon that the effective value of the power supply voltage to users suddenly drops in a short time and then

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