1. Complex R-X Diagram for Mho Relay Visualization in ATP/EMTP
- Author
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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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