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1. WO2018150877 - ARC DETECTION CIRCUIT, SWITCH SYSTEM, POWER CONDITIONER SYSTEM AND ARC DETECTION METHOD

Publication Number WO/2018/150877
Publication Date 23.08.2018
International Application No. PCT/JP2018/003202
International Filing Date 31.01.2018
IPC
G01R 31/00 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
G05F 1/67 2006.1
GPHYSICS
05CONTROLLING; REGULATING
FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
1Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
66Regulating electric power
67to the maximum power available from a generator, e.g. from solar cell
CPC
G01R 31/00
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
G05F 1/67
GPHYSICS
05CONTROLLING; REGULATING
FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
1Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
66Regulating electric power
67to the maximum power available from a generator, e.g. from solar cell
G05F 3/08
GPHYSICS
05CONTROLLING; REGULATING
FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
3Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
02Regulating voltage or current
08wherein the variable is dc
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 3/16
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
Y02E 10/56
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
10Energy generation through renewable energy sources
50Photovoltaic [PV] energy
56Power conversion systems, e.g. maximum power point trackers
Applicants
  • パナソニックIPマネジメント株式会社 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. [JP]/[JP]
Inventors
  • 古賀 達雄 KOGA Tatsuo
Agents
  • 鎌田 健司 KAMATA Kenji
  • 前田 浩夫 MAEDA Hiroo
Priority Data
2017-02545614.02.2017JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) ARC DETECTION CIRCUIT, SWITCH SYSTEM, POWER CONDITIONER SYSTEM AND ARC DETECTION METHOD
(FR) CIRCUIT DE DÉTECTION D'ARC, SYSTÈME DE COMMUTATION, SYSTÈME DE CONDITIONNEUR D'ÉNERGIE ET PROCÉDÉ DE DÉTECTION D'ARC
(JA) アーク検出回路、開閉器システム、パワーコンディショナシステム及びアーク検出方法
Abstract
(EN) An arc detection circuit (10) which detects arcs occurring in a transmission path (36) in which power is transmitted from a power supply device (PV panel (30)) to a power conditioner (50), the arc detection circuit (10) comprising: a current detector (12) which detects the current flowing though the transmission path (36); a storage unit (18) which, when an arc is not present, stores base characteristics that are the frequency characteristics of the current flowing through the transmission path (36); and an arc evaluation unit (16) which, on the basis of the result of a comparison between the base characteristics and detection characteristics that are the frequency characteristics of the current detected by the current detector (12), evaluates whether an arc has occurred.
(FR) L'invention concerne un circuit de détection d'arc (10) qui détecte des arcs se produisant dans un trajet de transmission (36) dans lequel de l'énergie est transmise en provenance d'un dispositif d'alimentation électrique (panneau PV (30)) à un conditionneur d'énergie (50), le circuit de détection d'arc (10) comprenant : un détecteur de courant (12) qui détecte le courant circulant à travers le trajet de transmission (36) ; une unité de mémorisation (18) qui, en cas d'absence d'arc, mémorise des caractéristiques de base constituant les caractéristiques de fréquence du courant circulant à travers le trajet de transmission (36) ; et une unité d'évaluation d'arc (16) qui, en fonction du résultat d'une comparaison entre les caractéristiques de base et les caractéristiques de détection constituant les caractéristiques de fréquence du courant détecté par le détecteur de courant (12), évalue si un arc s'est produit.
(JA) 電力供給装置(PVパネル(30))からパワーコンディショナ(50)に電力を伝送する伝送路(36)において発生するアークを検出するアーク検出回路(10)であって、伝送路(36)に流れる電流を検出する電流検出器(12)と、アークが発生していない場合に伝送路(36)に流れる電流の周波数特性であるベース特性を記憶する記憶部(18)と、電流検出器(12)によって検出される電流の周波数特性である検出特性と、ベース特性との比較結果に基づいて、アークの発生を判定するアーク判定部(16)とを備える。
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