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Your search keyword '"N. Solis-Ramos"' showing total 2 results
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2 results on '"N. Solis-Ramos"'

1. Ferroresonance Modeling and Analysis in Underground Distribution Feeders

Author

V. Torres-Garcia, N. Solis-Ramos, N. Gonzalez-Cabrera, E. Hernandez-Mayoral, and Daniel Guillen

Subjects
Distribution systems, ferroresonance, power cables, power quality, underground lines, Distribution or transmission of electric power, TK3001-3521, Production of electric energy or power. Powerplants. Central stations, TK1001-1841
Abstract

Nowadays, many modern electrical power systems are designed for transmission and distribution using underground systems. Such systems minimize visual impact, reduce congestion, and increase security and reliability. However, the technology utilized has increased the capacitance effect, which can lead to the system being more susceptible to the occurrence of the ferroresonance phenomenon. Ferroresonance can cause dielectric or thermal damage and consequently makes the system susceptible to faults in the electrical power equipment and installations. This paper analyzes the ferroresonance phenomenon after switching maneuvers in a real underground distribution feeder to detect possible conditions of ferroresonance. The analysis is carried out in a typical underground distribution system with distribution transformers connected in wye-grounded/wye-grounded (Ynyn), and modeled using the ATP/EMTP software.

Published
2023
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2. Complex R-X Diagram for Mho Relay Visualization in ATP/EMTP

Author

N. Solis-Ramos, Salvador Ramirez-Zavala, Victor H. Gonzalez-Sanchez, and Vicente Torres-Garcia

Subjects
0106 biological sciences, Emtp, Computer science, 010604 marine biology & hydrobiology, 020209 energy, 02 engineering and technology, Fault (power engineering), 01 natural sciences, Line (electrical engineering), law.invention, Electric power system, Electric power transmission, Relay, law, Backup, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Overhead (computing)
Abstract

Overhead transmission lines are probably the electrical component most vulnerable to lightning, short circuits, human errors, overloads and ageing due to the long trajectories they have. In this paper, the operation of the Distance Relay (21-ANSI/IEEE Standard Device Number) as primary or main protection as well as backup protection for overhead transmission lines is analyzed. The relay was modeled by using the ATP/EMTP program in order to visualize its response to different fault conditions and apparent impedance trajectories in the R-X complex diagram. MODELS programming language is used, which allows to implement algorithms that are used for structuring the functions and the operation logics of the relay. The relay behaviour under fault conditions at different locations along the line is validated by comparing it with the fault records from a real event in the electric power system of mexican utility.

Published
2020
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