Ann Based SVC Switching At Distribution Level for Minimal Injected Harmonics
D. Aravind1, K. Soujanya2, T. Naveen Kumar
1D.Aravind, PG Student, CMRCET, India.
2K.Soujanya, Associate Professor, CMRCET, India.
3T.Naveen Kumar, Assistant Professor, CMRCET, India.
Manuscript received on March 05, 2013. | Revised Manuscript received on March 11, 2013. | Manuscript published on March 15, 2013. | PP: 13-17
| Volume-1 Issue-4, March 2013. | Retrieval Number: D0170031413/2013©BEIESP

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Abstract: Electrical distribution system suffers from various problems like reactive power burden, unbalanced loading, voltage regulation and harmonic distortion. Though DSTATCOMS are ideal solutions for such systems, they are not popular because of the cost and complexity of control involved. Phase wise balanced reactive power compensations are required for fast changing loads needing dynamic power factor correcting devices leading to terminal voltage stabilization. Static Var Compensators (SVCs) remain ideal choice for such loads in practice due to low cost and simple control strategy. These SVCs, while correcting power factor, inject harmonics into the lines causing serious concerns about quality of the distribution line supplies at PCC. This paper proposes to minimize the harmonics injected into the distribution systems by the operation of TSCTCR type SVC used in conjunction with fast changing loads at LV distribution level. Fuzzy logic system and ANN is used to solve this nonlinear problem, giving optimum triggering delay angles used to trigger switches in TCR. The scheme with Artificial Neural Network (ANN) is attractive and can be used at distribution level where load harmonics are within limits.
Keywords: ANN, Fuzzy logic control, Harmonic distortion, Reactive power, Static Var Compensators.