The power system network is
becoming more complex nowadays and it is very difficult to maintain the
stability of the power system. The main purpose of this paper proposes a
12-pulse based Static Synchronous Series Compensator (SSSC) with and without
Superconducting Magnetic Energy Storage (SMES) for enhancing the voltage
stability and power oscillation damping in multi area system. Control scheme
for the chopper circuit of SMES coil is designed. A three area system is taken
as test system and the operation of SSSC with and without SMES is analysed for
various transient disturbances in MATLAB / SIMULINK environment.
KEYWORDS:
1. Static
Synchronous Series Compensator (SSSC)
2. Superconducting
Magnetic Energy Storage (SMES)
3. Multi
area system
4. Transient
disturbances
SOFTWARE: MATLAB/SIMULINK
SINGLE LINE DIAGRAM:
Fig. 1 Single line diagram of the test system with
SSSC with SMES
Fig. 2.Simulation result of test system
Fig. 3 Power output for Case (a) and (b)
(a)
With fault
(b)
Case (a)
(c) Case (b) Time (sec)
Fig. 4 Simulation result of Voltage with fault
Fig. 5 Simulation result for current with fault
Fig, 6 Simulation result for P & Q with fault
CONCLUSION:
The
dynamic performance of the SSSC with and without SMES for the test system are
analysed with Matlab/simulink. In this paper SMES with two quadrant chopper
control plays an important role in real power exchange. SSSC with and without
has been developed to improve transient stability performance of the power
system. It is inferred from the results that the SSSC with SMES is very
efficient in transient stability enhancement and effective in damping power
oscillations and to maintain power flow through transmission lines after the
disturbances.
REFERENCES:
[1] S. S. Choi, F.
Jiang and G. Shrestha, “Suppression of transmission system oscillations by
thyristor controlled series compensation”, IEE Proc., Vol.GTD-143, No.1, 1996,
pp 7-12.
[2] M.W. Tsang and
D. Sutanto, “Power System Stabiliser using Energy Storage”, 0-7803-5935-6/00
2000, IEEE
[3] Hingorani,
N.G., “Role of FACTS in a Deregulated Market,” Proc. IEEE Power Engineering
Society Winter Meeting, Seattle, WA, USA, 2006, pp. 1-6.
[4]
Molina, M.G. and P. E. Mercado, “Modeling of a Static Synchronous Compensator
with Superconducting Magnetic Energy Storage for Applications on Frequency
Control”, Proc. VIII SEPOPE, Brasilia, Brazil, 2002, pp. 17-22.
[5]
Molina, M.G. and P. E. Mercado, “New Energy Storage Devices for Applications on
Frequency Control of the Power System using FACTS Controllers,” Proc. X ERLAC,
Iguazú, Argentina, 14.6, 2003, 1-6.
