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11 results on '"Carrillo-Caicedo, G."'

3. Fault location in power distribution systems using a learning algorithm for multivariable data analysis

Author

Mora-Florez, J., Barrera-Nunez, V., and Carrillo-Caicedo, G.

Subjects
Algorithms -- Usage, Electric fault location -- Testing, Algorithm, Business, Computers, Electronics, Electronics and electrical industries
Abstract

This paper proposes alternatives to improve the electric power service continuity using the learning algorithm for multivariable data analysis (LAMDA) classification technique to locate faults in power distribution systems. In this paper, the current and voltage waveforms measured during fault events are characterized to obtain a set of descriptors. These sets are analyzed by using the projection pursuit exploratory data analysis to obtain the best projection in the [alpha] * and [beta] * axes. Next, these projections are used as input data of five LAMDA nets which locate the fault in a power distribution system. The proposed methodology demands a minimum of investment from utilities since it only requires measurements at the distribution substation. The information used to estimate the fault location is the system configuration, line parameters, and data from recorders installed at the distribution substation. Index Terms--Fault location, learning algorithm for multivariable data analysis (LAMDA), multivariable classification, power quality (PQ), service continuity, service continuity indexes.

Published
2007

4. A convex approximation for optimal DER scheduling on unbalanced power distribution networks [Una aproximación convexa para la programación óptima de DERs en sistemas de distribución desbalanceados]

Author

Serna-Suárez, I.D., Carrillo-Caicedo, G., Morales-España, G.A., Weerdt, M. de, and Ordóñez-Plata, G.

Abstract

The increase of solar photovoltaic penetration poses several challenges for distribution network operation, mainly because such high penetration might cause reliability problems like protection malfunctioning, accelerated decay of voltage regulators and voltage violations. Existing solutions based on mathematical programming solve a 3-phase ACOPF to optimally exploit the available energy, however, this might increase all reliability problems above if done carelessly. As a solution to optimally exploit DERs (like local photovoltaic and storage systems) without compromising the network reliability, this paper presents a novel algorithm to solve the 3-phase ACOPF as a sequence of convex Quadratically Constrained Quadratic Programs. Results show that this solution has a lower voltage unbalance and computation time than its non-linear counterpart, furthermore, it converges to a primal feasible point for the non-linear formulation without major sacrifices on optimal DER active power injections. © The author; licensee Universidad Nacional de Colombia.

Published
2019

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