Outdoor Frame-Type High-Voltage Reactive Power Compensation Device
Short Description:
Non-linear loads in industries such as steel, petrochemicals, metallurgy, coal, and printing and dyeing generate a large amount of harmonics during operation, have a low power factor, cause severe pollution to the power system, and affect power supply quality. High-voltage passive filter compensation units are mainly composed of filter capacitors, filter reactors, and high-pass resistors, forming single-tuned or high-pass filter channels. They are effective in filtering specific lower-order harmonics as well as higher-order harmonics, while providing reactive power compensation to improve the system's power factor, enhance system voltage stability, and ensure the safety and reliability of the power supply. Because they are economical, practical, simple in structure, reliable in operation, and easy to maintain, they have been widely used in high-voltage systems.
Product details
Product Overview:
Nonlinear loads in industries such as steel, petrochemical, metallurgy, coal, and printing and dyeing generate a large number of harmonics and low power factors during the working process, causing serious pollution to the power system and affecting the quality of power supply. The complete set of high-voltage passive filter compensation device is mainly composed of filter capacitors, filter reactors and high-pass resistors, forming a single-tuning or high-pass filter channel, which has a good filtering effect on specific subharmonics and harmonics above a certain order, and at the same time compensates the reactive power of the system, improves the power factor of the system, improves the voltage stability of the system, and the safety and reliability of the power supply system. Due to its economical and practical nature, simple structure, reliable operation and easy maintenance, it has been widely used in high-pressure systems.
Conditions apply
The device is divided into two situations: indoor and outdoor use.
Substations with relatively stable user loads.
The altitude of installation and operation should not exceed 1000 meters, and the altitude above 1000 meters must be specified at the time of ordering.
Temperature category: -40/A, -25/B, relative humidity 85%.
There is no gas or vapor around that corrodes the metal severely corroded.
No strong mechanical vibration.
The inclination from the vertical plane does not exceed 5 degrees.
The use conditions of the device exceed the above requirements and are designed separately.
Applications:
High-power rectifier devices: such as electrolytic aluminum, intermediate frequency furnaces, rolling mills, etc., semiconductor devices will produce characteristic harmonics related to their wiring methods in the process of shutting down and opening up, and the harmonic current flowing into the system will affect the normal operation of transformers and motors, causing them to overload or even burn out.
Electric locomotives: At present, most of the electrified railway locomotives used in operation in various countries use AC 25~35kV power supply, and some substations are two-phase powered. This inevitably causes three-phase load asymmetry, thus injecting harmonic current and negative sequence current into the power system. Generally, filters with the same capacity are installed on the two power supply arms of the traction transformer.
Load of ferromagnetic devices: such as transformers, iron core reactors, etc., when they work in a saturated state, due to the nonlinearity of the magnetization curve, a certain number of harmonics will be generated, of which the cubic is the main when there is a parallel compensation capacitor in the system, an appropriate ratio of the capacitance of the capacitance and the inductive reactance of the system will cause a serious amplification of the third harmonic.
Technical parameters
Rated voltage: 6kV~66kV
Fundamental Frequency: 50Hz
Tuning frequency: 2, 3, 4, 5, 7, 11, 13 and above (designed according to requirements)
Working mode: continuous work
Protection level: IP20 for indoor cabinet type
The voltage distortion rate of the power grid and the harmonic current injected into the power grid should be limited to the values specified in the GB/T 14549-93 "Harmonics of the power quality public grid"
Ambient temperature: -25°C ~+40°C
Air relative humidity: ≤90% (relative ambient temperature 20°C~25°C)
Altitude: no more than 1000m (more than 1000m adopts high prototype)
Environmental conditions: The installation site should be free of harmful dust, corrosive metal, and insulation damage gases
Explosive substances
Voltage fluctuation range: -10%~+10%
power frequency changes; ≤1%
Installation position: The inclination perpendicular to the horizon during installation does not exceed 5.
Installation place: divided into two situations: indoor and outdoor use
The applicable conditions of the device exceed the above requirements and are designed separately.
