Qualitative methods to solve qualitative problems in power system state estimation

Journal Article · Wed Aug 01 00:00:00 EDT 1990 · IEEE Transactions on Power Systems (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/59.65924· OSTI ID:6386738

Costa, A S; Pizza, T S ^[1]; Mandel, A ^[2]

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1. Dept. of Electrical Engineering, Universidade Federal de Santa Catarina, Florianopolic, SC (BR)
2. Dept. of Computer Science, Universidade de Sao Paulo, Sao Paulo (BR)

A combinatorial approach to deal with qualitative problems related to power system state estimation is proposed. The discussed techniques share the same theoretical background which also underlies a previously proposed method for observability analysis. The combinatorial framework is presented and further exploited to devise a fast method for identification of single critical measurements. This method is then extended to allow the determination of critical measurement sets. The interest in investigating these questions lies in the fact that, when contaminated by gross errors, critical measurements are undetectable, whereas measurements in critical sets are unidentifiable. The performance of the proposed combinatorial methods is appraised by means of several tests, using the IEEE-14 and 30 bus systems and two realistic systems of Brazilian utilities.

• OSTI ID: 6386738
• Journal Information: IEEE Transactions on Power Systems (Institute of Electrical and Electronics Engineers); (USA), Vol. 5:3; ISSN 0885-8950
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
POWER SYSTEMS
LOAD ANALYSIS
CALCULATION METHODS
ENERGY SYSTEMS
240100* - Power Systems- (1990-)