Title :
Response of D-STATCOM under unbalanced voltage condition caused by SLG fault
Author :
Abdul Wahab, Noor KzWi ; Mariun, N. ; Mohamed, Azah ; Mohamad, MohibulIah
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. Putra Malaysia, Malaysia
Abstract :
This work presents a study on a distribution static compensator (D-STATCOM) operating in electrical systems where the voltages are unbalanced due to SLG fault. During the SLG fault, negative sequence components exist in the system. In balanced systems the STATCOM has a very good performance, allowing compensation of capacitive or inductive reactive power with a fast transient response. When there are negative sequence components due to voltage imbalance, the D-STATCOM has reacted in reducing the unbalanced in the system. An analytical analysis, and simulations of a 12-pulse D-STATCOM using the electromagnetic transient program (PSCAD/EMTDC) show how D-STATCOM reacts during the unbalanced in the system affected by negative sequence components and how its performance increase the power system´s stability. The D-STATCOM performances under unbalanced voltage are illustrated in the paper along with harmonics analysis study.
Keywords :
EMTP; harmonic analysis; power distribution faults; power system stability; reactive power control; static VAr compensators; transient response; D-STATCOM; PSCAD/EMTDC; SLG fault; capacitive reactive power compensation; distribution static compensator; electrical systems; electromagnetic transient program; fast transient response; harmonics analysis; inductive reactive power compensation; power system stability; unbalanced voltage condition; voltage imbalance; Analytical models; Automatic voltage control; EMTP; Electromagnetic analysis; PSCAD; Performance analysis; Power system simulation; Reactive power; STATCOM; Transient response;
Conference_Titel :
Research and Development, 2003. SCORED 2003. Proceedings. Student Conference on
Print_ISBN :
0-7803-8173-4
DOI :
10.1109/SCORED.2003.1459730
