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1. WO2011003435 - AN ARRANGEMENT AND A METHOD FOR MONITORING THE STATUS OF DC-SIDE REACTORS IN AN HVDC TRANSMISSION

Publication Number WO/2011/003435
Publication Date 13.01.2011
International Application No. PCT/EP2009/058474
International Filing Date 06.07.2009
IPC
H02J 3/36 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
36Arrangements for transfer of electric power between ac networks via a high-tension dc link
H02M 7/757 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
7Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
66with possibility of reversal
68by static converters
72using discharge tubes with control electrode or semiconductor devices with control electrode
75using devices of a thyratron or thyristor type requiring extinguishing means
757using semiconductor devices only
H02H 7/122 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
7Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
10for converters; for rectifiers
12for static converters or rectifiers
122for inverters, i.e. dc/ac converters
H02H 3/52 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
3Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
50responsive to the appearance of abnormal wave forms, e.g. ac in dc installations
52responsive to the appearance of harmonics
CPC
H02J 3/36
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
36Arrangements for transfer of electric power between ac networks via a high-tension dc link
H02M 7/7575
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
7Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
66with possibility of reversal
68by static converters
72using discharge tubes with control electrode or semiconductor devices with control electrode
75using devices of a thyratron or thyristor type requiring extinguishing means
757using semiconductor devices only
7575for high voltage direct transmission link
Y02E 60/60
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
60Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Applicants
  • ABB TECHNOLOGY AG [CH]/[CH] (AllExceptUS)
  • JANSSON, Fredrik [SE]/[SE] (UsOnly)
  • NYBERG, Krister [SE]/[SE] (UsOnly)
  • JUHLIN, Lars-Erik [SE]/[SE] (UsOnly)
Inventors
  • JANSSON, Fredrik
  • NYBERG, Krister
  • JUHLIN, Lars-Erik
Agents
  • KOCK, Ina
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) AN ARRANGEMENT AND A METHOD FOR MONITORING THE STATUS OF DC-SIDE REACTORS IN AN HVDC TRANSMISSION
(FR) AGENCEMENT ET PROCÉDÉ DE SURVEILLANCE DE L'ÉTAT DE BOBINES DE RÉACTANCE CÔTÉ CC DANS UNE TRANSMISSION CCHT
Abstract
(EN)
An arrangement for monitoring the status of two smoothing reactors (7, 8) in a back-to-back-station having line-commutated thyristor converters (4, 5) and a DC-link (6) interconnecting the converters and provided with smoothing reactors (7, 8) and a grounded mid point (9), comprises means (10, 11) configured to measure the voltages across the two reactors and means (12-15) configured to filter out at least one of the dominating harmonic voltage components resulting from the commutations of said converters on the DC-side thereof from voltage values delivered by said first means for use thereof for determining the status of the smoothing reactors.
(FR)
L'invention porte sur un agencement de surveillance de l'état de deux bobines de réactance de lissage (7, 8) dans un poste dos à dos comprenant des convertisseurs à thyristors commutés par ligne (4, 5) et une liaison en courant continu (CC) (6) interconnectant les convertisseurs et comprenant des bobines de réactance de lissage (7, 8) et un point intermédiaire mis à la masse (9), lequel agencement comprend des moyens (10, 11) configurés pour mesurer les tensions aux bornes des deux bobines de réactance et des moyens (12-15) configurés pour éliminer par filtrage au moins une des composantes de tension harmoniques dominantes résultant des commutations desdits convertisseurs, côté CC de ceux-ci, dans des valeurs de tension délivrées par lesdits premiers moyens, en vue d'utiliser celles-ci pour déterminer l'état des bobines de réactance de lissage.
Latest bibliographic data on file with the International Bureau