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1. WO2015029458 - DC POWER GENERATION SYSTEM AND PROTECTION METHOD FOR DC POWER GENERATION SYSTEM

Publication Number WO/2015/029458
Publication Date 05.03.2015
International Application No. PCT/JP2014/050748
International Filing Date 17.01.2014
IPC
H02H 7/26 2006.1
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
26Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred
G01R 31/02 2006.1
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
02Testing of electric apparatus, lines, or components for short-circuits, discontinuities, leakage, or incorrect line connection
G01R 31/08 2006.1
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
08Locating faults in cables, transmission lines, or networks
H02H 3/16 2006.1
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
16responsive to fault current to earth, frame or mass
H02H 3/44 2006.1
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
44responsive to the rate of change of electrical quantities
H02H 3/50 2006.1
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
CPC
G01R 31/08
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
08Locating faults in cables, transmission lines, or networks
G01R 31/1227
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
12Testing dielectric strength or breakdown voltage ; ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
1227of components, parts or materials
G01R 31/52
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
52Testing for short-circuits, leakage current or ground faults
H02H 1/0015
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
1Details of emergency protective circuit arrangements
0007concerning the detecting means
0015Using arc detectors
H02H 3/38
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
38responsive to both voltage and current; responsive to phase angle between voltage and current
H02H 7/20
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
20for electronic equipment
Applicants
  • 三菱電機株式会社 MITSUBISHI ELECTRIC CORPORATION [JP]/[JP]
Inventors
  • 金丸 誠 KANEMARU Makoto
  • 新土井 賢 SHINDOI Takeshi
  • 矢野 知孝 YANO Tomotaka
Agents
  • 大岩 増雄 OIWA Masuo
Priority Data
2013-17410526.08.2013JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) DC POWER GENERATION SYSTEM AND PROTECTION METHOD FOR DC POWER GENERATION SYSTEM
(FR) SYSTÈME DE PRODUCTION D’ÉNERGIE C.C. ET PROCÉDÉ DE PROTECTION POUR SYSTÈME DE PRODUCTION D'ÉNERGIE C.C.
(JA) 直流発電システムおよび直流発電システムの保護方法
Abstract
(EN)  This DC power generation system is provided with an arcing detection device having an arcing noise analysis unit for detecting arcing occurring in the system, on the basis of noise in a signal from a voltage/current sensor, a voltage/current fluctuation analysis unit which, in the event that arcing has been detected in the arcing noise analysis unit, analyzes the voltage/current operating point of the output of each string, from a signal from the voltage/current sensor, and on the basis of fluctuation of the voltage/current operating point before and after the arcing was detected, identifies the site at which arcing occured, and a switch control unit which controls opening and closing of a switch, on the basis of the arcing identification result in the voltage/current fluctuation analysis unit.
(FR)  Cette invention concerne un système de production d'énergie en courant continu (c.c.) qui est pourvu d'un dispositif de détection de formation d'arc comprenant une unité d'analyse de bruit de formation d'arc pour détecter une formation d'arc survenant dans le système, sur la base de bruit dans un signal provenant d'un capteur de tension/courant, une unité d'analyse de fluctuation de tension/courant qui, dans le cas où une formation d'arc a été détectée dans l'unité d'analyse de bruit de formation d'arc, analyse le point de fonctionnement de tension/courant de la sortie de chaque chaîne, à partir d'un signal provenant du capteur de tension/courant, et sur la base d'une fluctuation du point de fonctionnement de tension/courant avant et après détection de la formation d'arc, identifie le site auquel une formation d'arc est survenue, et une unité de commande d'interrupteur qui commande l'ouverture et la fermeture d'un interrupteur, sur la base du résultat d'identification de formation d'arc dans l'unité d'analyse de fluctuation de tension/courant.
(JA)  電圧電流センサの信号のノイズに基づいて直流発電システムに発生するアークを検出するアークノイズ解析部と、アークノイズ解析部においてアークが検出された場合に、電圧電流センサからの信号により各ストリングの出力の電圧電流動作点を解析し、電圧電流動作点の、アークが検出された前後の変動に基づいて、アークの発生箇所を特定する電圧電流変動解析部と、電圧電流変動解析部におけるアーク特定結果に基づいて開閉器の開閉を制御する開閉器制御部を有するアーク検出装置を備えるようにした。
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