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1. WO2013047940 - ELECTRONIC POWER METER FOR DETECTING AN N PHASE CURRENT BASED ON WAVEFORM SUPERPOSITION OF A THREE PHASE INPUT CURRENT, AND N PHASE CURRENT DETECTING METHOD USING SAME

Publication Number WO/2013/047940
Publication Date 04.04.2013
International Application No. PCT/KR2011/007739
International Filing Date 18.10.2011
IPC
G01R 22/06 2006.1
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
22Arrangements for measuring time integral of electric power or current, e.g. electricity meters
06by electronic methods
CPC
G01R 19/02
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
19Arrangements for measuring currents or voltages or for indicating presence or sign thereof
02Measuring effective values, i.e. root-mean-square values
G01R 21/133
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
21Arrangements for measuring electric power or power factor
133by using digital technique
G01R 22/06
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
22Arrangements for measuring time integral of electric power or current, e.g. by electricity meters
06by electronic methods
G01R 29/16
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
29Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
16Measuring asymmetry of polyphase networks
Applicants
  • 한국전력공사 KOREA ELECTRIC POWER CORPORATION [KR]/[KR] (AllExceptUS)
  • 김상준 KIM, Sang-Jun [KR]/[KR] (UsOnly)
  • 박상서 PARK, Sang-Suh [KR]/[KR] (UsOnly)
  • 김동섭 KIM, Dong-Sub [KR]/[KR] (UsOnly)
  • 김수봉 KIM, Su-Bong [KR]/[KR] (UsOnly)
  • 이정렬 YI, Jeong-Ryoul [KR]/[KR] (UsOnly)
Inventors
  • 김상준 KIM, Sang-Jun
  • 박상서 PARK, Sang-Suh
  • 김동섭 KIM, Dong-Sub
  • 김수봉 KIM, Su-Bong
  • 이정렬 YI, Jeong-Ryoul
Agents
  • 한양특허법인 HANYANG PATENT FIRM
Priority Data
10-2011-009715826.09.2011KR
Publication Language Korean (ko)
Filing Language Korean (KO)
Designated States
Title
(EN) ELECTRONIC POWER METER FOR DETECTING AN N PHASE CURRENT BASED ON WAVEFORM SUPERPOSITION OF A THREE PHASE INPUT CURRENT, AND N PHASE CURRENT DETECTING METHOD USING SAME
(FR) WATTMÈTRE ÉLECTRONIQUE POUR DÉTECTION DE COURANT DE PHASE N SUR LA BASE DE SUPERPOSITION DE FORMES D'ONDE DE COURANT D'ENTRÉE TRIPHASÉ ET PROCÉDÉ DE DÉTECTION DE COURANT DE PHASE N UTILISANT CELUI-CI
(KO) 3상 입력전류의 파형중첩을 통해 N상 전류를 검출하는 전자식 전력량계 및 이를 이용한 N상 전류 검출 방법
Abstract
(EN) The present invention relates to an electronic power meter for detecting an N phase current based on waveform superposition of a three phase input current, and an N phase current detecting method using same. The electronic power meter comprises: a sampling unit for sampling a three phase input current and calculating sampled current values for each phase; and an N phase current calculating unit for receiving the sampled current values for each phase and calculating an N phase current using superposed results of the sampled values at an identical sampling time from among the sampled values for each phase over a unit of time.
(FR) La présente invention concerne un wattmètre électronique pour détecter un courant de phase N sur la base de superposition de formes d'onde d'un courant d'entrée triphasé, et un procédé de détection de courant de phase N utilisant celui-ci. Le wattmètre électronique comprend : une unité d'échantillonnage pour échantillonner un courant d'entrée triphasé et calculer des valeurs de courant échantillonnées pour chaque phase ; et une unité de calcul de courant de phase N pour recevoir les valeurs de courant échantillonnées pour chaque phase et calculer un courant de phase N utilisant des résultats superposés des valeurs échantillonnées à un temps d'échantillonnage identique parmi les valeurs échantillonnées pour chaque phase au cours d'une unité de temps.
(KO) 본 발명은 3상 입력전류의 파형중첩을 통해 N상 전류를 검출하는 전자식 전력량계 및 이를 이용한 N상 전류 검출 방법을 제공한다. 전자식 전력량계는 3상에 입력된 전류를 샘플링하여 각 상의 샘플링 전류값을 산출하는 샘플링부 및 각 상의 샘플링 전류값을 전달받으며, 단위시간 동안의 각 상의 샘플링 전류값 중 동일 샘플링 시점의 값들을 각각 중첩한 결과를 이용하여 N상 전류를 산출하는 N상 전류 산출부를 포함한다.
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