The present invention relates to a system for calculating a power collection ratio between an electric railway vehicle and a catenary by measuring an inflection point, and is to provide a system for collecting the power collection ratio between an electric railway vehicle and a catenary by measuring the inflection point according to analysis of a waveform of current when an electric railway vehicle is operated on a catenary by electric energy supplied from a catenary. The system comprises: a current measuring unit which measures the current of a catenary; an arc determining unit which analyzes the waveform of current of the catenary measured through the current measuring unit, and determines an arc according to its current state; an inflection point extracting unit which extracts an inflection point at which current starts falling, in a section of determining that the arc occurs through the arc determining unit; and a power collection ratio calculating unit which extracts the total contact loss arc occurrence time on the basis of the inflection point information extracted in the section of determining that the arc occurs, and calculates a power collection ratio as the ratio of the extracted total contact loss arc occurrence time and the total current measurement time.

    본 발명은 변곡점 측정을 이용한 전기차량과 전차선간 집전율 계산 시스템에 관한 것으로서, 전기철도에서 전기차량이 전차선으로부터 공급되는 전기 에너지에 의해 운행하고 있는 경우, 전류의 파형 분석에 따른 변곡점 측정을 이용하여 전기차량과 전차선간 집전율을 계산하는 시스템을 제공함에 목적이 있다. 이러한 목적을 달성하기 위한 본 발명은, 전차선로의 전류를 측정하는 전류 측정부; 상기 전류 측정부를 통해 측정된 전차선로의 전류의 파형을 분석하여, 전류상태에 따른 아크를 판단하는 아크 판단부; 상기 아크 판단부를 통해 아크가 발생했다고 판단한 구간에서, 전류가 하강하기 시작하는 변곡점을 추출하는 변곡점 추출부; 및 아크가 발생했다고 판단한 구간에서의 추출된 변곡점 정보를 바탕으로 총 이선아크 발생시간을 추출하고, 추출된 총 이선아크 발생시간과 총 전류 측정시간의 비로서, 집전율을 계산하는 집전율 계산부;를 포함한다.


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    Title :

    SYSTEM FOR CALCULATING RATIO OF POWER COLLECTION BETWEEN ELECTRIC RAILWAY VEHICLE AND CATENARY USING MEASURING OF POINT OF INFLECTION


    Additional title:

    변곡점 측정을 이용한 전기차량과 전차선간 집전율 계산 시스템


    Contributors:
    PARK YOUNG (author) / CHO YONG HYEON (author) / LEE KI WON (author) / KWON SAM YOUNG (author) / PARK CHUL MIN (author)

    Publication date :

    2015-11-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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