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TCSC (Thyristor Controlled Series Compensator)

Thyristor controlled series compensators (TCSCs) are an extension of conventional series capacitors through adding a thyristor-controlled reactor. Placing a controlled reactor in parallel with a series capacitor enables a continuous and rapidly variable series compensation system.

Donsión

24/08/2007

TCSC Power Circuit

The basic power circuit for the TCSC is simple. It has a separate circuit for each phase. The TCR needs control. The key Elements in the TCSC are:

power circuit for the power converter; synchronization and gate control; control loops.

VIGO (Spain)

TCSC (Thyristor Controlled Series Compensator)

Representation of FACTS Controllers Based on Conventionalal ThyristorsThyristors

ITCR

Q Q

C L

L

VSVC

VTCR

 

The thyristor-controlled reactor (TCR)

C

The static VARR compensatorcompensator (SVC)(SVC)

Donsión

Iloopp

L

VTCSC

The thyristor-controlled series compensator (TCSC)CSC)

24/08/2007

VIGO (Spain)

 

TCSC (Thyristor Controlled Series Compensator)

Donsión

24/08/2007

The effective impedance is:

Where:

And αis the firing delay angle measured from the Vc peak.

TCSC Characteristic. Impedance versus firing delay angle

VIGO (Spain)

TCSC (Thyristor Controlled Series Compensator)

Donsión

Typical TCSC Waveforms

24/08/2007

TCSC (Thyristor Controlled Series Compensator)

Donsión

Typical TCSC Waveform

24/08/2007

TCSC (Thyristor Controlled Series Compensator)

Donsión

TCR Internal Control Scheme

A “Thyristor controlled series compensator TCSC “ is planned for better utilization in India in 2000. The FACTS system was to be installed on the 400kV, 395km long , Kanpur- Ballabgarh line. Kanpur- Ballabgarh and Kanpur-Agra 400kV lines in Northern grid of UP carry about 800MW power from Singrauli and Rihand belt to western UP and Rajasthan.

24/08/2007