TVR-Line Three Phase Line Voltage Regulator

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, for example, if the voltage decreases, the voltage will reduce torque so that the slip is increased, so that the stator and rotor current significantly increases, resulting in motor temperature liter rise, possibly even burning motor; on the contrary, when the voltage is too high, due to the excitation current and iron loss greatly increased, resulting in motor overheating, efficiency is reduced.

Low voltage will affect the use of incandescent lamps. Voltage 10% lower than the rated voltage, incandescent light flux is reduced by 30% higher voltage than the rated voltage of 10%, the lamp life is reduced by half.

Low voltage will also affect the air conditioning running, cell phone charger, TV signal reception and other problems.

Power system losses: In conveying power certain time, the square of system losses and operating voltage, if the voltage decreases, the current increases and the loss, the loss will become larger system.

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 blow figure5

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, all the electric equipments in the factory can not use. 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

(1) Below3000 meter;(special altitude can be customized)
(2) Work temperature: -25°C-65°C(special temperature can be customized)
(3) Monthly humidity less than (25°C ) 90% in 25°C
(4) Pollution class : III class
(5) Rating voltage : 11/22/33kV or customized
(6) Rating capacity : 500kVA ~6300kVA
(7) Frequency: 50/60Hz
(8) Vector group:3phase 3 wire single winding star/delta
(9) tap change selector : 9/11/13/17/27/32 position
(10) Cooling method : ONAN
(11) PT : 10000/100V 50VA ;
(12) CT : XXX/1A, 2 meter method ;
(13) third winding rating voltage : 220V;
( 14 ) regulator range:(-10%~+10%) , (-5%~+15%),(0~+20%)(0~+30%)or customized

Voltage Regulator Structure

ON LOAD TAP CHANGER

Intelligent Controller

FK Function Features

Project

Installation

Technical Specification

Transmission line use

Weights and dimensions are for reference only, and not for construction purposes. For exact dimensions, please contact Farady Electric co.,Ltd

Technical Chart (50Hz/60Hz)

Special design for custom please contact FARADY technical department.

Power Substation use

Weights and dimensions are for reference only, and not for construction purposes. For exact dimensions, please contact Farady Electric co.,Ltd

Technical Chart (50Hz/60Hz)

Resources