TBBW-12 Outdoor Reactive Power Compensation Device | High Voltage Grid Solutions

TBBW-12 series outdoor frame reactive power compensation device

TBBW-10kv(12kv) Outdoor Reactive Power Compensation Device

This series of high-voltage reactive power compensation devices are mainly used for capacitive reactive power compensation and inductive reactive power compensation in the power system with power frequency of 6kV-10kV, so as to adjust and balance the grid voltage, improve the power factor, reduce line loss, improve power quality, and give full play to the production efficiency of power generation, power supply equipment and electrical equipment.

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Parameter

Reactor Application
The device is generally equipped with dry-type hollow reactors installed at the neutral point or power supply side to limit inrush currents, suppress high-order harmonics, and improve voltage waveforms.

Inrush Current Limiting: Reactance rate of 0.5%-1%
Suppression of Harmonics above 5th Order: Reactance rate of 4.5%-7%
Suppression of Harmonics above 3rd Order: Reactance rate of 12-14%

Technical Parameters

Power Factor: Can reach up to 0.95 after compensation.
Capacitor Characteristics: Utilizes full-film dielectric capacitors with high reliability, long life, low losses, and good sealing performance.
Voltage Endurance: Can operate under steady-state overvoltage of 1.1 times the rated voltage for a long time.
Overcurrent Endurance: Can continuously operate with a root mean square value not exceeding 1.3 times the rated current.
Control Method Supports local control, centralized control, or automatic control based on user requirements.

Main Technical Performance Indicators

1. Capacitance Deviation: The actual capacitance deviation from the rated capacitance is within 0 to +5%, with the maximum to minimum capacitance ratio between any two terminals not exceeding 1.02.
2. Inductance Deviation: Under rated current, the allowable deviation of reactance is 0 to +5%, with the reactance of each phase not exceeding ±2% of the three-phase average.
3. Insulation Level:

Rated voltage of the device	1min power frequency withstand voltage of primary circuit (rms)	Primary circuit impulse withstand voltage [(1.2-5)/50μs peak]	Secondary circuit 1min power frequency withstand voltage (RMS value)
6	32	60	2
10	42	75	2
35	95	200	2

4. Overload capacity

（1）Steady-state overvoltage

Power frequency overvoltage U	Maximum duration	Illustrate
1.1	long-term	The maximum value of long-term overvoltage does not exceed 1.10UN
1.15	30min every 24h	Adjustment and fluctuation of system voltage
1.2	5min	The voltage rises at light loads
1.3	1min	The voltage rises at light loads

(2) Steady-State Overcurrent: Can continuously operate under a root mean square value not exceeding 1.1 × 1.3 IN.
(3) Switching Performance: When switching capacitors, peak voltage does not exceed 2√2 times the applied voltage, and the duration of transition overvoltage does not exceed 1/2 of the wave cycle.
(4) Maximum Allowable Capacity: Total capacity does not exceed 1.35 QN, ensuring safe and reliable operation of the device.
(5) Discharge Performance: Within 5 seconds after power off, the voltage of each capacitor group is below 50V.
(6) Protection Mechanism: The integrated capacitor is equipped with internal fuses to ensure protection in case of internal faults.
(7) External Voltage Protection: The device is equipped with an external capacitor discharge circuit to provide secondary voltage protection.