Three Phase Line Voltage Regulator SVR 2.5-34.5kV - China Suppliers and Factory Quality Solutions
The actual voltage from the rated voltage of the circuit size is an important measure of power quality, also is a important guarantee of power supply reliability and voltage quality.
General
Ideally the distribution lines should to be able to keep the whole line of constant voltage, but in actual, the impedance of the distribution line will result in that the voltage of end and terminal is not same (Figure 1).
Since the line voltage can not be kept constant, when the actual voltage levels exceed the normal range of fluctuation of voltage allowed, it will seriously affect the normal use of the system and electrical equipment.
Electric power system: Low voltage will affect the power supply equipment output, reducing supply reliability, but also affect their own economic power, voltage drops particularly severe, even voltage collapse may occur, the frequency of loss and blackouts and other incidents.
Electric equipment: Voltage quality have an impact on safe and economic operation of various types of equipment such as the asynchronous motor. Low voltage reduces torque and increases stator/rotor current, possibly burning the motor; high voltage causes overheating and reduced efficiency due to excitation current.
Low voltage affects incandescent lamps (10% lower voltage = 30% less light flux) and reduces lamp life by half if voltage is 10% higher. It also affects air conditioning, chargers, and TV signal reception.
Power system losses: If the voltage decreases, the current increases, leading to significantly larger system losses.
Work Principle
TVR-line voltage regulator is a special design autotransformer with on-load tap changer, it can automatically "monitoring" and smoothly adjusts the output voltage, and also guarantee the output voltage within the voltage requirement. 27 taps regulation can meet every step 0.75% regulation accuracy. See below figure 5.
In Figure 6, is an utility sample for a factory which require 400V electric power, but the power line is not stably in the summer because the load is 120% of rated capacity, so the power to the factory is lower than 360V. After install Farady auto voltage regulator, it can adjust the power line voltage from 8038V to 11000V and keep it stable with 2% accuracy, so the power to factory can be keep at 400V(+8V accuracy).
Work Condition
Altitude: Below 3000m (Customizable)
Temperature: -25°C to 65°C
Humidity:
Pollution Class: III class
Rating Voltage: 11/22/33kV
Rating Capacity: 500kVA - 6300kVA
Frequency: 50/60Hz
Vector Group: 3phase 3wire star/delta
Tap Selector: 9/11/13/17/27/32 pos
Cooling: ONAN
PT: 10000/100V 50VA
Regulator Range: ±10%, -5%~+15%, etc.
Voltage Regulator Structure
VACUUM TYPE ON LOAD TAP CHANGER
Selector switch structure combining functions of diverter and selector. Maintenance-free up to 100,000 operations. Max current 600A, max voltage 145kV, up to 23 positions.
OIL IMMERSED TYPE ON LOAD TAP CHANGER
Typical combined-structure applicable in oil-immersed transformers. Electrical life 50,000 times, mechanical life 500,000 times. Max current 400A, max voltage 35kV.
Intelligent Controller
1High accuracy: 27 taps regulation.
2Long life: Nearly a million operations.
3Maintenance-free: High IP protection sealing.
4Flexible: Easy mounting in lines/substations.
5SCADA: RS232 adapter for automation.
6Low loss: Minimized iron and load loss.
FK Function Features
1. Friendly user interface to modify settings and browse data.
2. Easy setting for voltage, bandwidth, delay, and offset.
3. Measures load voltage, current, apparent power, reactive power, and power factor.
4. Automatic forward/reverse regulation for ring network power supply.
5. RS232/RS485 interfaces for remote control and telemetry.
6. Supports multiple communication protocols without needing extra RTU/FTU devices.
2. Easy setting for voltage, bandwidth, delay, and offset.
3. Measures load voltage, current, apparent power, reactive power, and power factor.
4. Automatic forward/reverse regulation for ring network power supply.
5. RS232/RS485 interfaces for remote control and telemetry.
6. Supports multiple communication protocols without needing extra RTU/FTU devices.
Project & Installation
Frequently Asked Questions
What is the primary function of the TVR-line voltage regulator?
It is a specialized autotransformer with an on-load tap changer designed to automatically monitor and smoothly adjust output voltage, ensuring it stays within the required range for distribution lines.
How many regulation taps does the system offer?
The system features 27 taps of regulation, which allows for a high precision adjustment accuracy of 0.75% per step.
What are the main differences between the Vacuum and Oil-immersed tap changers?
The Vacuum type is maintenance-free for up to 100,000 operations and handles up to 600A, while the Oil-immersed type is a more economical choice for transformers up to 35kV and 400A.
Can the regulator be integrated into a SCADA system?
Yes, the intelligent controller includes an RS232/RS485 adapter and supports various communication protocols for remote control and distribution automation (SCADA).
What are the standard working conditions for this equipment?
It is designed for altitudes below 3000m and temperatures between -25°C and 65°C. However, special configurations for different altitudes and temperatures can be customized.