Improvement of Sag under Different Fault Conditions
N. Saida Naik1, A Sai Pallavi2, L Srujana3
1N.Saida Naik, Department of EEE, PSCMR College of Engineering & Technology, Vijayawada (A.P), India.
2A.Sai Pallavi, Department of EEE, PSCMR College of Engineering & Technology, Vijayawada (A.P), India.
3L.Srujana, Department of EEE, PSCMR College of Engineering & Technology, Vijayawada (A.P), India.
Manuscript received on 05 February 2019 | Revised Manuscript received on 13 February 2019 | Manuscript published on 28 February 2019 | PP: 566-569 | Volume-8 Issue-4, February 2019 | Retrieval Number: D2885028419/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The improvement of power flow in a distributed system can be achieved by the FACTS compensator that is D-STATCOM (DISTRIBUTION_STATIC_COMPENSATOR) also known as which is shunt connected, is explained in this paper. To reduced the Sag-in-voltage issues(power quality issue), a Distribution-STATCOM is used which is connected at PCC (Point of Common Coupling).The advantage of quick operation of Distribution-STATCOM makes the it more efficient and hence power flow is improved. Varied controllers are utilzed to operate the Distribution-STATCOM. To enhance the power flow, we are simulating and designing it with PI Controller. In distribution networks with linear balanced loads, their power flow can be increases at varied fault conditions such as L-L Faults (Line to Line),L-G Faults (Line to Ground), L-L-G Faults, L-L-L-G Faults. These faults are studied and simulated output waveforms are presented also calculating THD (Total Harmonic Distortion) with and without Distribution-STATCOM Compensator. The harmonics and Sag-in-voltages due to LG, LLG & LLLG faults in this proposed system are reduced and we can achieve enhanced power flow. The reduction of faults and trhe value of THD ( Total-Harmonic-Distortion) can be simulated and studied in MATLAB.
Keyword: DSTATCOM, PI, FAULTS, PWM.
Scope of the Article: Refrigeration and Air Conditioning