Stabilizing control for long distance longitudinal power system by superconducting magnetic energy storage.

Effects of generator model and AVR on power system stabilization by superconducting magnet energy storage system

“…DC power P d absorbed by SMES is given by (7) Ex pressing all the quantities in the common (8) It is assumed that SMES is installed at the generator terminals and the rotor speed is fed back through the control angle as follows:…”

Experiment of power system stabilization by using superconducting magnetic energy storage in artificial power transmission systems

“…Transfer function G 1 ( 8 ) from ~PS to ~E and transfer function G Z ( 8) The control circuit is designed to achieve the following two goals: (1) Output energy ~E converges to zero very quickly for step input of ~PS.…”

“…To derive the step response of transfer function G 1 (8) Eq. (6) is rewritten as (8) and a = (2R/L + Kp )/2 } Q) 2 =Kp/TJ -(2R/ L+Kp)2/4 (9) where it is assumed that (10) Waveforms of step response are shown in Fig .…”

“…The stabilization effect of SMES has been studied so far mainly by a digital simulation technique [5][6][7][8]. The effectiveness of active power control of SMES for the improvement of transient stability has also been confirmed experimentally by using a simulator [9].…”

Required capacity of superconducting magnetic energy storage system for power system stabilization

“…Neglecting the commutating reactance of thyristor bridge, the dynamic characteristics of SMES are represented by (3) where Id is the coil current of SMES. V t is the terminal voltage at the point of installation of SMES as viewed from the dc side.…”