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Title: Power flow control and N-1 contingency analysis with DSRs in unbalanced transmission networks

Authors:
; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
1355062
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Electric Power Systems Research
Additional Journal Information:
Journal Volume: 136; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-10-03 22:05:10; Journal ID: ISSN 0378-7796
Publisher:
Elsevier
Country of Publication:
Switzerland
Language:
English

Citation Formats

Omran, Shaimaa, Broadwater, Robert, Hambrick, Joshua, Dilek, Murat, Thomas, Chifong, and Kreikebaum, Frank. Power flow control and N-1 contingency analysis with DSRs in unbalanced transmission networks. Switzerland: N. p., 2016. Web. doi:10.1016/j.epsr.2016.02.024.
Omran, Shaimaa, Broadwater, Robert, Hambrick, Joshua, Dilek, Murat, Thomas, Chifong, & Kreikebaum, Frank. Power flow control and N-1 contingency analysis with DSRs in unbalanced transmission networks. Switzerland. doi:10.1016/j.epsr.2016.02.024.
Omran, Shaimaa, Broadwater, Robert, Hambrick, Joshua, Dilek, Murat, Thomas, Chifong, and Kreikebaum, Frank. 2016. "Power flow control and N-1 contingency analysis with DSRs in unbalanced transmission networks". Switzerland. doi:10.1016/j.epsr.2016.02.024.
@article{osti_1355062,
title = {Power flow control and N-1 contingency analysis with DSRs in unbalanced transmission networks},
author = {Omran, Shaimaa and Broadwater, Robert and Hambrick, Joshua and Dilek, Murat and Thomas, Chifong and Kreikebaum, Frank},
abstractNote = {},
doi = {10.1016/j.epsr.2016.02.024},
journal = {Electric Power Systems Research},
number = C,
volume = 136,
place = {Switzerland},
year = 2016,
month = 7
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.epsr.2016.02.024

Citation Metrics:
Cited by: 1work
Citation information provided by
Web of Science

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  • In real three-phase power systems the voltages and currents are not fully symmetrical. A method has been developed to estimate the effects of slight unbalanced network conditions for steady-state operation. A conventional power flow is followed by a linear incremental calculation using a three-phase model of the network. The unbalanced condition is handled like a multiple unbalanced fault. The process is illustrated for the case of a transformer bank with non-identical single phase units. The results show the effects of different transformer reactances and different voltage ratios, respectively.
  • The paper presents a preventive secure contingency constrained approach to the voltage profile optimization suitable both for VAR planning and for short term reactive scheduling. The solution of the problems is based upon the implementation of two Optimal Reactive Power Flow (ORPF) programs: the first relevant to determining a workable state (security aspect), the second relevant to attaining the optimal and secure point (Global target). The first ORPF is solved by recursively employing a linear programming algorithm, while the second one is based on the Han-Powell algorithm. In the paper emphasis is given to the introduction of the contingency constraintsmore » in the ORPF models. The N-1 security constraints are explicitly introduced in the programs in order to obtain an operating point preventive-secure with respect to a selected contingency set. The performances of the procedures are shown by presenting the numerical results obtained from their applications to a small test network and to the large ENEL transmission system.« less
  • In this paper existence conditions for the physically acceptable voltage solution in power transmission networks are given and a sensitivity-based approach for their real-time evaluation is outlined. Proposed theoretical results are illustrated on a simplified Pennsylvania-Jersey-Maryland model, on which reactive power/voltage problems were reported to exist. On the same system a comparison of the most typical voltage controls is made. Different corrective control actions are compared in context of their role within multiple utility power wheeling operating mode. The paper represents an overall attempt to link existing operating voltage problems (frequently economics driven) to the theoretical results necessary for theirmore » fundamental understanding and, further, for designing efficient real time system monitoring and control techniques.« less
  • This paper describes a new power flow method for solving weakly meshed distribution and transmission networks, using a multi-port compensation technique and basic formulation of Kirchhoff's laws. This method has excellent convergence characteristics and is very robust. A computer program implementing this power flow solution scheme was developed and successfully applied to several practical distribution networks with radial and weakly meshed structure. This program was also successfully used for solving radial and weakly meshed transmission networks. The method can be applied to the solution of both the three-phase (unbalanced) and single-phase (balanced) representation of the network. In this paper, however,more » only the single phase representation is treated in detail.« less