Ankerui SVC dynamic reactive power compensation and filtering device can not only compensate the reactive power loss in the power grid by switching capacitor bank, improve the power factor, reduce the line loss, thereby improving the load capacity and power quality of the power grid; Three-phase voltage, current, power factor and other power parameters of the power grid. 1. Overview Dynamic reactive power compensation and filtering device is suitable for automatic reactive power compensation of 0.4kV frequency 50Hz voltage; it integrates reactive power compensation, .jpg)
Filtering and grid monitoring can not only compensate the reactive power loss in the power grid by switching capacitor banks, improve the power factor, reduce the line loss, thus improve the load capacity and power quality of the power grid. At the same time, it can also monitor the three-phase of the power grid in real time. Power parameters such as voltage, current, and power factor.
2, the working principle
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3. The necessity of reactive power compensation
â— If the power factor is too low, it will be punished by the power sector or even interrupt the power consumption of the enterprise.
China's power supply rules stipulate that the power factor of industrial users and power users equipped with load-adjusting voltage devices must reach 0.9 or above; for users whose power factor does not meet the above requirements, the power department will charge additional electricity charges. In accordance with the "Power Factor Adjustment Electricity Fees".
â—The lack of reactive power in the power system will result in lower production efficiency and higher production costs.
When the power factor is low, the voltage of the device changes greatly, the reactive power loss is also large, and the aging of the device is accelerated, which easily causes the service life of the device to be shortened and affects the operation of the device.
â— Increase the line loss of transformers and electrical network equipment
The apparent power transmitted by the line is unchanged, and the low power factor will directly increase the loss of the transformer and the transmission line, directly increasing the power cost.
4. Implementation Standard GB/T 7251.1-2005 "Low-voltage switchgear and control equipment Part 1"
GB/T 14549-1993 "Power Quality: Harmonics in the Utility Grid"
GB/T 15543-2008 "Power quality: three-phase voltage allowable imbalance"
GB/T 18481-2001 "Power Quality: Temporary Overvoltage and Transient Overvoltage"
GB/T 15576-2008 "General technical conditions for low voltage reactive power static compensation device"
5, model description
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6. Main features â— The cabinet body adopts frame-assembled structure, surface sprayed or passivated, and the appearance is neat and beautiful, anti-aging, anti-corrosion and high life.
â—The structure design is compact and reasonable, the wiring is neat and generous, and the maintenance is convenient.
â— The cabinet body can be installed independently or in combination with other cabinets.
â— A variety of compensation forms: three-phase total compensation, three-phase compensation, total compensation + sub-complement three forms. According to the actual situation of the power grid, taking into account the compensation effect and cost, the compensation form should be selected reasonably. Fully resolve the contradiction between compensation reactive power and three-phase imbalance and between three-phase compensation and cost.
â— Use series reactors or filter reactors to suppress and eliminate the 3rd, 5th, and 7th harmonics, which can be customized according to the specific grid background of the user site.
â— The controller has multi-loop loop or code switching operation mode, which can effectively avoid the problem that the individual capacitors are switched too frequently during group switching and achieve optimal control.
â— With data acquisition function and standard communication interface, it can realize remote real-time monitoring and computer network management.
â—The composite switch is used for switching capacitance, zero-crossing input, neither switching current and good heat dissipation mechanism, no harmonic injection, and high reliability.
â— With power parameter monitoring, acquisition and statistics functions.
7, technical indicators
8, the size
Note: This is the standard product size, the specific size can be customized.
9, application areas.jpg)
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Technical support: Yang Junjun 18702112137 QQ
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
Filtering and grid monitoring can not only compensate the reactive power loss in the power grid by switching capacitor banks, improve the power factor, reduce the line loss, thus improve the load capacity and power quality of the power grid. At the same time, it can also monitor the three-phase of the power grid in real time. Power parameters such as voltage, current, and power factor.
2, the working principle
3. The necessity of reactive power compensation
â— If the power factor is too low, it will be punished by the power sector or even interrupt the power consumption of the enterprise.
China's power supply rules stipulate that the power factor of industrial users and power users equipped with load-adjusting voltage devices must reach 0.9 or above; for users whose power factor does not meet the above requirements, the power department will charge additional electricity charges. In accordance with the "Power Factor Adjustment Electricity Fees".
â—The lack of reactive power in the power system will result in lower production efficiency and higher production costs.
When the power factor is low, the voltage of the device changes greatly, the reactive power loss is also large, and the aging of the device is accelerated, which easily causes the service life of the device to be shortened and affects the operation of the device.
â— Increase the line loss of transformers and electrical network equipment
The apparent power transmitted by the line is unchanged, and the low power factor will directly increase the loss of the transformer and the transmission line, directly increasing the power cost.
4. Implementation Standard GB/T 7251.1-2005 "Low-voltage switchgear and control equipment Part 1"
GB/T 14549-1993 "Power Quality: Harmonics in the Utility Grid"
GB/T 15543-2008 "Power quality: three-phase voltage allowable imbalance"
GB/T 18481-2001 "Power Quality: Temporary Overvoltage and Transient Overvoltage"
GB/T 15576-2008 "General technical conditions for low voltage reactive power static compensation device"
5, model description
6. Main features â— The cabinet body adopts frame-assembled structure, surface sprayed or passivated, and the appearance is neat and beautiful, anti-aging, anti-corrosion and high life.
â—The structure design is compact and reasonable, the wiring is neat and generous, and the maintenance is convenient.
â— The cabinet body can be installed independently or in combination with other cabinets.
â— A variety of compensation forms: three-phase total compensation, three-phase compensation, total compensation + sub-complement three forms. According to the actual situation of the power grid, taking into account the compensation effect and cost, the compensation form should be selected reasonably. Fully resolve the contradiction between compensation reactive power and three-phase imbalance and between three-phase compensation and cost.
â— Use series reactors or filter reactors to suppress and eliminate the 3rd, 5th, and 7th harmonics, which can be customized according to the specific grid background of the user site.
â— The controller has multi-loop loop or code switching operation mode, which can effectively avoid the problem that the individual capacitors are switched too frequently during group switching and achieve optimal control.
â— With data acquisition function and standard communication interface, it can realize remote real-time monitoring and computer network management.
â—The composite switch is used for switching capacitance, zero-crossing input, neither switching current and good heat dissipation mechanism, no harmonic injection, and high reliability.
â— With power parameter monitoring, acquisition and statistics functions.
7, technical indicators
Technical Parameters | index | |
Electrical parameter | Rated voltage | AC400V |
Compensation capacity | 160～400kvar | |
working frequency | 50Hz | |
Response time | <20ms | |
Overload capability | Voltage overload 1.1 times, current overload 1.3 times | |
Target power factor | 0.8 to 1.0 (can be set) | |
Control characteristics | Compensation method | Total complement, sub-complement, and hybrid supplement |
Number of control channels | 2~18 | |
control method | With manual and automatic switching mode | |
Switching algorithm | Cycling | |
Protective function | Overvoltage, undervoltage, phase loss, short circuit protection | |
Structure | Protection level | IP30 (can be customized according to customer requirements) |
colour | RAL7035 (can be customized according to customer requirements) | |
Installation method | Indoor installation, fixed way and incoming mode | |
Environmental conditions | Ambient temperature | -25°C to +50°C |
Relative humidity | 40 ° C; ≤ 50%; 20 ° C, ≤ 90% | |
altitude | ≤2000 meters | |
Compensation capacity (kvar) | Dimensions width × height × depth (mm) |
Below 100 | 600×2200×600 |
100-150 | 600×2200×800 |
150-200 | 800×2200×1000 |
200-300 | 800×2200×1000 |
300-400 | 1000×2200×1000 |
/ | / |
Note: This is the standard product size, the specific size can be customized.
9, application areas
Technical support: Yang Junjun 18702112137 QQ
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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