Moger, Tukaram and Dhadbanjan, Thukaram (2015) A novel index for identification of weak nodes for reactive compensation to improve voltage stability. In: IET GENERATION TRANSMISSION & DISTRIBUTION, 9 (14). pp. 1826-1834.
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In this study, a new reactive power loss index (RPLI) is proposed for identification of weak buses in the system. This index is further used for determining the optimal locations for placement of reactive compensation devices in the power system for additional voltage support. The new index is computed from the reactive power support and loss allocation algorithm using Y-bus method for the system under intact condition and as well as critical/severe network contingencies cases. Fuzzy logic approach is used to select the important and critical/severe line contingencies from the contingency list. The inherent characteristics of the reactive power in system operation is properly addressed while determining the reactive power loss allocation to load buses. The proposed index is tested on sample 10-bus equivalent system and 72-bus practical equivalent system of Indian southern region power grid. The validation of the weak buses identification from the proposed index with that from other existing methods in the literature is carried out to demonstrate the effectiveness of the proposed index. Simulation results show that the identification of weak buses in the system from the new RPLI is completely non-iterative, thus requires minimal computational efforts as compared with other existing methods in the literature.
| Item Type: | Journal Article |
|---|---|
| Publication: | IET GENERATION TRANSMISSION & DISTRIBUTION |
| Publisher: | INST ENGINEERING TECHNOLOGY-IET |
| Additional Information: | Copy right for this article belongs to the INST ENGINEERING TECHNOLOGY-IET, MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND |
| Keywords: | power system stability; power grids; power system reliability; fuzzy set theory; weak-node identification; voltage stability improvement; reactive power loss index; RPLI; reactive compensation devices; power system; reactive power support-loss allocation algorithm; Y-bus method; network contingency; fuzzy logic approach; line contingency; load bus; 10-bus equivalent system; 72-bus practical equivalent system; Indian southern region power grid; weak bus identification |
| Department/Centre: | Division of Electrical Sciences > Electrical Engineering |
| Date Deposited: | 15 Dec 2015 07:47 |
| Last Modified: | 15 Dec 2015 07:47 |
| URI: | http://eprints.iisc.ac.in/id/eprint/52911 |
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