Indoor Medium- and High-Voltage Reactive Power Compensation Device
Short Description:
The KRTBB series indoor medium- and high-voltage reactive power compensation devices are mainly used in 6KV, 10KV, 24KV, and 35KV three-phase power systems to regulate and balance network voltage, improve power factor, reduce losses, and enhance power supply quality. The indoor frame-type reactive power compensation device performs capacitive and inductive reactive power compensation for the power system, aiming to adjust and balance grid voltage, improve power factor, reduce line losses, enhance power quality, and fully optimize the operational efficiency of power generation and supply equipment.
Product details
Product Overview
KRTBB series indoor medium and high voltage reactive power compensation devices are mainly used in 6KV, 10KV, 24KV, 35KV three-phase power systems, which are used to adjust the balanced network voltage, increase the power factor, reduce the loss, and improve the quality of power supply. The indoor frame reactive power compensation installation mainly performs capacitive reactive power compensation and inductive reactive power compensation for the power system, which is used to adjust and balance the power grid voltage, improve the power factor, reduce line loss, improve power quality, and give full play to the production efficiency of power generation and power supply equipment.
The indoor cabinet reactive power compensation device is used outdoors, mainly including: isolation grounding switch, high-voltage shunt capacitor, air core reactor, capacitor special fuse, discharge device (special discharge coil or voltage transformer), gapless oxide arrester, live display device, relay protection device, connecting wire, strut insulator, frame, etc.
Conditions of use
Ambient temperature: -25°C ~+45°C, average temperature within 24 hours does not exceed +35°C,
Allocation: no more than 2000 meters, higher than 2000 meters adopts high prototype products.
Humidity: The daily average is not greater than 95%, and the monthly average is not greater than 90%0
Outdoor wind speed≤ 35m/s.
Seismic resistance: the seismic intensity shall not exceed 8 degrees.
The slope of the ground is not greater than 3.
The sunlight radiation shall not exceed 10,000 w/m².
Installation site: The place of use is not allowed to have explosive hazardous media, the surrounding environment should not be filled with corrosive metals and insulation gases and conductive media, and it is not allowed to be filled with water vapor and serious mold.
Ordering instructions
System main wiring, floor plan layout.
The rated voltage of the system, the total compensated capacity, the capacity and quantity of a single capacitor, etc.
Use should be provided at the time of ordering when the conditions are used.
Structural features
1. Installed indoors, cabinet structure, fixed cutting.
2. The capacitor compensation device can be switched directly in the substation.
3. KRTBB indoor cabinet reactive power compensation device is composed of series air core reactor, wire feed frame and capacitor, and the air core reactor is generally three-phase stacked or three-phase product glyph installation; The wire inlet frame includes a high-voltage isolation switch, a discharge coil and a lightning arrester; Capacitor racks are generally arranged in two rows and one row, and two rows and two layers are arranged with large capacity; The wire inlet frame and the capacitor frame are placed side by side, the height and width are the same, and each capacitor is equipped with an external fuse; The periphery needs to be surrounded by a mesh fence of not less than 2 meters, and the fence door is equipped with a flap door to facilitate inspection and maintenance.
4. The device structure is reasonably designed, the dynamic and thermal stability is good, the live display device is used to display the switching status of the device, and there are electromagnetic locks, cabinet door switches, observation windows, with forced locking function, and the safety of operation and maintenance personnel.
5. The isolation grounding switch is equipped with an electromagnetic lock to ensure that the isolation switch cannot be operated when the device is charged; The isolation grounding switch can be in the grounded state during the maintenance of the capacitor bank, and the maintenance personnel are safe.
Performance characteristics
1. The device allows long-term operation at 1.1 times the rated voltage of power frequency.
2. The device allows continuous operation at steady-state overcurrent of 1.3 times the rated current due to overvoltage and higher harmonics.
3. The device can limit the inrush current generated at the moment of capacitor operation to less than 20 times the rated current of the capacitor bank.
4. According to the power distribution system, reactors with different reactance can be configured to suppress harmonics and closing inrush current.
5. High-voltage power capacitors using process and full-film dielectric have the characteristics of high reliability, long life, low loss, low operating temperature rise, etc., and also have the characteristics of high discharge starting voltage and good sealing performance.
6. It has a perfect capacitor protection function, and the short-circuit protection of a single capacitor adopts a high-voltage jet-by-fuse fuse; And according to the different wiring methods, the capacitor bank is equipped with relay protection such as open triangle unbalanced voltage and neutral point unbalanced current.
7. The difference between the measured total capacity of the capacitor and the sum of the rated values of each capacitor shall not exceed +10%--0, and the capacitance deviation of each phase shall not exceed 5%.
Technical parameters
System rated voltage: 6~35kV. Rated frequency: 50~60Hz
Rated capacity: 150~10000kvar (10kV and below) 600~20000kvar (35kV)
