• Title/Summary/Keyword: 지중 전력선 통신채널

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The Analysis of Underground Power Line Communication Channel Characteristics by Measurements (지중전력선 통신채널 측정에 의한 특성해석)

  • Shin, Dong-Hwan;Choi, Jeong-Yeon;Lee, Seung-Jun;Woo, Hui-Gon;Shin, Jai-Ho;Eom, Ki-Hwan
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2009.10a
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    • pp.86-89
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    • 2009
  • In this paper, a broadband power line communication modem and network technology to develop tests with actual characteristics of the underground power line communication channel to be interpreted. Length and structure of the underground distribution line due to underground distribution line to the broadband powerline communication channels to measure the amount of attenuation on the signal generator, spectrum analyzer, such as contactless coupler was used to configure the channel measurement system. Demonstration tests in the test line as a single line by selecting the longest high-voltage lines where the two-channel measurement and signal attenuation on the noise level was measured. Measuring results degrade communication performance can be quite sure that was the presence of impulse noise, long lines, the line length was confirmed by the high-frequency attenuation appears.

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An Analysis of Characteristics of Underground Power line Communication Channel (지중 전력선 통신채널의 특성 해석)

  • Eom, Ki-Hwan;Shin, Jai-Ho;Lee, Seung-Joon
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.48 no.5
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    • pp.40-45
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    • 2011
  • In this paper, to develop a broadband power line communication modem and network technologies, we analysis the characteristics of underground power line communication channel through actual tests. To measure the amount of attenuation by length and structure of broadband power line communication channel, we configure a measurement system of the channel with signal generator, spectrum analyzer and non-contacted coupler. For actual tests, we choose two of the longest lines among medium-voltage lines as a single line in the test lines and measure the characteristics of noise and signal attenuation level of the channel. The experimental results show that the channel has a impulse noise which can remarkably reduce communication capability. In the case of long lines, high-frequency attenuation appeared by length of the lines.

Study on Channel Characteristics and Feasibility of Narrowband Power Line Communication over Underground Low Voltage Power Lines (지중 저압 전력선의 협대역 전력선통신 채널특성 및 적용성에 대한 연구)

  • Yoo, Hyunwoo;Yoon, Kyung Shub;Kang, Sukyung;Choi, Inji;Park, Byungseok;Kim, Il Han;Kim, Wonsoo
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.38A no.10
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    • pp.874-884
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    • 2013
  • This paper presents in details channel and noise characteristics over narrow bands below 500kHz based on the field tests over underground low voltage(LV) power lines in residential areas in Korean grid. We show that the channel characteristics of narrowband signals over underground LV power line are decent. We first describe methodology of channel characteristic measurements including channel frequency response, noise, and line impedance, and obtain channel characteristics over the underground LV lines in the residential areas. Also based on the measurement results, we adopt the IEEE P1901.2 standard on the FCC High band, and bring up narrow band power line communication network.

Design and evaluation of BPLC-based meter reading network via underground MV line (지중전력선을 경유한 BPLC 원격검침 통신망 설계 및 성능평가)

  • Baek, Jongmock;Ju, Seongho;Lim, Yonghun;Choi, Moonsuk
    • Proceedings of the KIPE Conference
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    • 2010.11a
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    • pp.304-305
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    • 2010
  • 전력선통신을 이용한 원격검침 시스템의 구축이 시범사업을 넘어 상용화 수준으로 확대되어가고 있으나 현재까지는 주로 주상변압기에서 댁내 수용가정간에 고속전력선 통신칩을 사용하여 셀 토폴로지형태로 100가구전후 원격검침망을 구성하였다. 지중구간의 전력선은 가공선로와는 많은 다른 통신채널 특징을 가지며 지중화된 구간은 대도시 밀집지역에 주로 시설되기 때문에 원격검침시스템 구성시 가공구간보다 경제적인 측면에서나 검침자동화 확산 측면에서나 좋은 효과를 볼 수 있다. 본 논문에서는 지중고압선을 경유하는 원격검침망의 모델을 설계하고 시범운영을 통해 성능을 시험하였다.

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PLC Channel Characteristics of High Voltage Underground Distribution Line (고압 배전 지중선의 PLC 채널 특성)

  • Choi, In-Ji;Choi, Moon-Suk;Park, Byung-Seok;Hyun, Duck-Hwa
    • Proceedings of the KIEE Conference
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    • 2006.07d
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    • pp.2043-2044
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    • 2006
  • 배전 계통을 대상으로 하는 통신 시스템에 전력통신(PLC : Power Line Communication)기술을 적용하고자 할 때, 고압 배전선의 통신 채널로서의 특성 분석이 근간이 되어야 한다. 일반적으로 지하 공동구의 배전 지중 케이블에는 케이블-케이블 간의 전기적, 물리적 접촉점인 접속 개소가 일정한 간격으로 존재하게 된다. 그러므로 통신 신호의 매개체가 되는 전력 케이블의 채널 특성 분석에는 케이블 접속 개소의 영향도 고려 대상이 되어야 한다. 본 논문에서는 서울시 광진구 일부의 부하를 담당하고 있는 22.9 kV 고압 배전 지중 선로를 시험 선로로 비접촉식 커플러를 통해 통신 신호를 전송하여 삽입 손실 측정 결과를 보았고 케이블 접속 개소의 영향을 주파수 영역에서 채널 특성을 통해 분석 하였다. 시험 결과 케이블 접속 개소를 통과할 때 채널 특성은 십여 dB의 신호 감쇄를 보였다.

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