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Design of Smart Bridge for Medium/Low Voltage Power Line Interconnection Communication
Pages: 99-104
Year: Issue:  20
Journal: Electrical Measurement & Instrumentation

Keyword:  power line communicationbridgechannel equalizationchannel interconnection;
Abstract: In order to achieve the interconnection communications between power line channels of 10 kV medium-volt-age and 220V low-voltage,a smart bridge system has been proposed based on fast channel estimation and channel e-qualization algorithm in the paper. First of all,the system components and the operating principle will be introduced. Then the core part of the bridge,that is the operating principle and realization of the channel equalizer,will be ana-lyzed in detail. In this algorithm,the real-time channel receiving spectrum will be estimated firstly based on the SIFT fast Fourier transform. Then according to the slow time-varying characteristics of the channel,the receiving spectrum of the current channel combining with the previous time channel characteristics is used to estimate the cur-rent channel equalization value so as to constitute a closed-loop feedback link. Experiments show that the designed bridge system can meet the requirements of the medium-low voltage power line interconnection communication.
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