THD reduction using series transformer connection in a STATCOM within Mosul ring system

الملخص EN

The static synchronous compensator (STATCOM) is one of the components of Flexible AC Transmission System (FACT).

STATCOM is used to compensate the reactive power with fast response.

It consist of power electronic devices.

The main drawback of STATCOM is harmonics injection to the system.

Different techniques can be used to reduce harmonic injection, such as the use of 12-pulse STATCOM with Pulse Width Modulation (PWM) to control the operation of power electronic devices.

In this work the series connection of transformers is studied and compared with parallel connection.

The study is applied to the suggested STATCOM in the ring system around Mosul city.

Matlab / Simulink is used to analyze the two systems.

The results are given and discussed in the paper.

Also it is found that the Total Harmonic Distortion (THD) can be further reduced by using series connection of transformers secondary rather than shunt connection.