电力系统保护与控制2017，Vol.45Issue(11)：102-107,6.DOI:10.7667/PSPC160855
一种中压电力线通信阻抗匹配电路设计
Design of impedance matching circuit for MV power line communication
摘要
Abstract
The channel characteristic of medium voltage power line is complex, in which the impedance mismatch will have an important impact on the quality of communication. The insertion loss is analyzed in the capacitive coupling device, which is caused by the non ideal parameters of the coupling capacitor and coupling transformer. A model of matching circuit is designed by using transfer power gain to describe the matching effect. Based on the structure of the classical passive bandpass filter and the parameter of non ideal element in coupling device, the component value of the matching network is adjusted by the nonlinear optimization algorithm. Finally, the average value of the transfer power gain reaches the maximum in the 50~500 kHz frequency range. Related examples show that the proposed method can effectively improve the transfer power gain of the whole frequency band and achieve a better matching effect. The structure of the matching circuit is simple and easy to implement.关键词
电力线通信/阻抗匹配/非线性优化/耦合装置/转移功率增益Key words
power line communication/impedance matching/nonlinear optimization/coupling device/transfer power gain引用本文复制引用
郭以贺,杜思思..一种中压电力线通信阻抗匹配电路设计[J].电力系统保护与控制,2017,45(11):102-107,6.基金项目
国家自然科学基金项目(61204027) （61204027）
中央高校基本科研业务费专项资金(2015MS97) （2015MS97）
河北省科技计划项目(17211704D)This work is supported by National Natural Science Foundation of China (No. 61204027) and Fundamental Research Funds for the Central Universities (No. 2015MS97). （17211704D）
