Resumen:
This paper describes the experimentes carried out with a serires controlled reactance to be used for line-current control in an electric-power transmission line. The controlled reactance has been built with a superconducting coil that can be short-circuited by two inverse parallel thyristors. It is shown that, if the thyristors are fired at a variable angle every cycle, the effective series impedance of the device can be varied continuosly as a function of the firing angle. A single-phase prototype has been built for closed-loop current control in an a.c. circuit. Conventional thyristors and firing circuits have been used for the prototype and no weitching-off control is necessary. The same technology is frequently used in electric energy systems. The controller has been fully implemented using a digital signal processor (DSP) and a commercial real-time interface. This gives good flexibility to the controller design and test. The paper investigates experimental results for the steady state and the transient performance of the prototype.
Palabras Clave: Current control, electric energy systems, superconducting coil, phase-angle control
Índice de impacto JCR y cuartil WoS: 1,700 - Q3 (2023)
Referencia DOI:
https://doi.org/10.1109/77.783302
Publicado en papel: Junio 1999.
Publicado on-line: Junio 1999.
Cita:
A. García-Cerrada, P. Mingorance, C. Fernández, A. Robertson, L. García-Tabarés, A. Grau, V. González, J.M. Rodríguez-García, J.F. Alonso-Llorente, Line-current control with a series thyristor-controlled reactance based on a superconducting coil for electric-energy systems. IEEE Transactions on Applied Superconductivity. Vol. 9, nº. 2, pp. 330 - 333, Junio 1999. [Online: Junio 1999]
