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Abstract

A number of limitations surround the JET pulse load and its impact upon the high voltage network in order not to decrease quality and reliability of the electrical supply to other consumers. According to the present agreement with the Central Electricity Generating Board (CEGB) the active and reactive power swing at the 400kV point of supply should not exceed 575MW and 375MVAr. The voltage drop should be less than 1.5% and the rise and decay of JET load should not exceed 200MW/s. There are also limitations in load power steps the purpose being to protect components of the CEGB power system. The paper presents two simulated JET scenarios in which the plasma current is Ip=5MA and the additional heating power to the plasma is 25MW. The pulse termination is either normal or abnormal (plasma disruption). In the first case a reactive power compensation of 130MVAr is needed in order to comply with the limits on voltage drop. In case of plasma disruption an active power compensation of 150W is needed in addition in order that the combined JET load may remain within the present limits of active power step, reactive power swing and voltage drop.

Additional information

Authors: SELIN K I, JET JOINT UNDERTAKING, ABINGDON (UK);PADOVA UNIVERSITY (ITALY);CENTRAL ELECTRICITY GENERATING BOARD, LONDON (UK);MARCHESE V, JET JOINT UNDERTAKING, ABINGDON (UK);PADOVA UNIVERSITY (ITALY);CENTRAL ELECTRICITY GENERATING BOARD, LONDON (UK);CISCATO D, JET JOINT UNDERTAKING, ABINGDON (UK);PADOVA UNIVERSITY (ITALY);CENTRAL ELECTRICITY GENERATING BOARD, LONDON (UK);ASHMOLE P, JET JOINT UNDERTAKING, ABINGDON (UK);PADOVA UNIVERSITY (ITALY);CENTRAL ELECTRICITY GENERATING BOARD, LONDON (UK);JERVIS B JET JOINT UNDERTAKING, ABINGDON (UK), JET JOINT UNDERTAKING, ABINGDON (UK);PADOVA UNIVERSITY (ITALY);CENTRAL ELECTRICITY GENERATING BOARD, LONDON (UK);PADOVA UNIVERSITY (ITALY), JET JOINT UNDERTAKING, ABINGDON (UK);PADOVA UNIVERSITY (ITALY);CENTRAL ELECTRICITY GENERATING BOARD, LONDON (UK);CENTRAL ELECTRICITY GENERATING BOARD, LONDON (UK), JET JOINT UNDERTAKING, ABINGDON (UK);PADOVA UNIVERSITY (ITALY);CENTRAL ELECTRICITY GENERATING BOARD, LONDON (UK)
Bibliographic Reference: 14TH SOFT CONFERENCE, AVIGNON (FRANCE), SEPT. 8-12, 1986 VOL. 1, PP. 867-874 1895 P., 1986, VOL. 1 AND VOL. 2, ISBN 0 08 034935 8 WRITE TO PERGAMON PRESS, HEADINGTON HILL HALL, OXFORD, OX3 0BW (UK), PRICE: UKL 220 (FOR BOTH VOLS.)
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