Reliability is one of the key aspects of power system operation and therefore reliability analysis techniques are well developed. However reliability analysis conventionally takes into account active power and limited attention has been given to reactive power. Reactive power is very essential in maintaining voltage stability of power systems. The voltage constraint at network can restricts active power delivery to the loads and could result in forced load curtailment. This research investigates the effect of reactive power shortage on reliability of power systems with significant penetration of PV cells. The reactive power issues become more significant in distributed generation using renewable energy sources such as photovoltaic (PV) Cells, which operate mostly at unity power factor. The IEEE 14-Bus system is utilized to perform this study. Twenty four state PV generation model was developed based on 24-hour solar radiation trend. Reliability indices are calculated analytically and verified through simulation without considering reactive power shortage. Next, a measure of Expected Energy Not Supplied (EENS) on account of reactive power shortage and voltage violation in network is calculated. Monte Carlo simulation was performed in MATLAB environment, where simulation results are compared with the case without taking into account reactive power and voltage violation. This research suggests that placement of the PV in the network can greatly reduce active and reactive power shortage during the contingencies. The reactive power is studied here from design and planning perspectives for reliable and stable power system operation when high penetrations of PV energy sources are present.
| Identifer | oai:union.ndltd.org:LSU/oai:etd.lsu.edu:etd-05252012-140911 |
| Date | 05 June 2012 |
| Creators | Gaikwad, Dattatray N |
| Contributors | Mehraeen, Shahab, Mendrela, Ernest, McAnelly, Michael |
| Publisher | LSU |
| Source Sets | Louisiana State University |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lsu.edu/docs/available/etd-05252012-140911/ |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached herein a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to LSU or its agents the non-exclusive license to archive and make accessible, under the conditions specified below and in appropriate University policies, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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