Medium voltage Static Var Compensator SVC with Vaccum Contactors multi steps switching

Medium voltage Static Var Compensator(SVC) reactive power compensation systems/ automatic power factor correction panels are used everywhere that motors are still directly operated without power electronics, or other consumers with a low inductive cosφ place strain on the grid with reactive power in addition to their active-power requirements. Local supply of this reactive power by means of compensation systems relieves the burden on the supply grid and reduces losses.

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Description

Overview of MV SVC

Medium Voltage Static Var Compensator(SVC) aims to improve power factor and enhance power quality, utilising capacitors to offset usually inductive loads(motors). SVC system increase the efficiency of power supply, delivering immediate cost savings on electricity.

ZD-GWJ Series Medium voltage SVC: can detect the reactive power needed by the system in real time,compare it with the set value, carry on the automatic intelligent capacitor-switching on/off, make the reactive power of the system achieve dynamic balance, in order to improve the power factor of the system, stabilize the system voltage.

Following are effect before and after power factor correction,

contrast before and after power factor correction

Specificaitons of SVC

Name	Medium voltage Static Var compensator
Model	ZD-GWJ-X/6-
Rated Voltage	6Kv~35Kv
Connection Type	Three-phase 3 wire, Three phase 4 wire
Rated Frequency	50/60HZ
Step Capacity	100,200,300kVAr
Rated Capacity/panel	1200kVAr
Power Factor	0.9
Switch	Vacuum Contactors
Capacitance Tolerance	-5%, +10%
Reactance ratio	6% 12% or customerized
Switching	Automatic switching Capacitors
Storage temperature	-40~85 °C
Working temperature	-25~55 °C
Humidity	≤95%,non-condensate
Dimension (mm)	800(1200)800(1200)2200(2400)
Installation	Indoor, free standing
Altitude	<1500m without de-rating
Certification	ISO9001,CCC, Type Test Report

MV SVC PANEL Capacitors and Reactors

Features

■Fast return on investment through lower power costs

Power factor correction reduces the reactive power in a system. Power consumption and power costs drop in proportion.

■Effective use of installation

An improved power factor means that an electrical installation operates more economical (higher effective power for the same apparent power).

■Improved voltage quality

■Reduced voltage drops

■Optimum cable design

Cable cross-sections can be reduced with improvement of power factor (less current). In existing installations for instance, extra or higher power can be transmitted.

■Reduced transmission losses

The transmission and switching devices carry less current, i.e. only the effective power, meaning that the ohmic losses in the leads are reduced.

Applications

ZDDQ automatic capacitor banks are widely used for fluctuating loads such as motors, variable frequency drives, melting furnace from Steel Rolling mills,Chemical industry,Cement plant, Suger plant, Textile, Hospitals, Hotels, Building segment,Automobile industry,Oil and gas industry,public grid etc.