Role of controlling of substation using PLC and SCADA

Abstract EN

This paper presents a novel idea of reactive power compensation with off-line UPS.

The most effective power quality improvement solution is analyzed in an un interruptible power supply system.

The fixed, variable reactive power compensation system modelled and output simulations «٢،? analyzed.

It is also analyzed reactive power compensation with inverter and capacitor bank in UPS system.

The key inputs «٢،? the system voltage and current to generate the gate signal with power electronics switches.

The conventional UPS has three stages i.e.

Rectifier converts AC to DC, Battery to .٢»؛؟،? DC and Inverter converts DC to AC.

In off-line UPS, power is delivered to load via by-pass switch when main supply is available.

Inverter does not operate during this period.

So inverter function is same as conventional inverter.

To overcome this problem, static change over switches is proposed.

Hence it will get better voltage regulation and loss less in distribution system.

The performance ٠/ simulation result is analyzed using MATLAB/SIMULINK.