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提出了一种基于传输线理论的信道容量简化算法,在高带宽利用率条件下将信道容量解耦成几个独立的部分,分别用于研究传输距离、单根分支线对信道容量的影响及分支线之间的耦合效果。通过对无分支结构的电力线信道容量分析,提出了信道容量的简化算法及其适用条件。将分支线对信道容量的影响,分解成了对分支线长度及所接负载影响的研究,通过对部分典型负载特征的分析,讨论信道容量对负载的敏感性。利用统计方法研究了分支之间的耦合效应,当电力网中分支相距较远时,该耦合效果可以忽略不计,则信道容量可以看作与传输距离和分支线数量呈线性关系。仿真结果表明,该简化算法与传统计算方法具有较好的一致性,可用于分析不同网络结构对电力线传输性能的影响和信道容量的快速估计。
A channel capacity simplification algorithm based on transmission line theory is proposed. The channel capacity is decoupled into several independent parts under the condition of high bandwidth utilization, which are respectively used to study the influence of transmission distance and single branch line on channel capacity, The coupling effect between the branches. By analyzing the power line channel capacity of unbranched structure, a simplified algorithm of channel capacity and its application conditions are proposed. The influence of the branch line on the channel capacity is decomposed into the study on the influence of the branch line length and the load on it. By analyzing some typical load characteristics, the sensitivity of the channel capacity to the load is discussed. The statistical method is used to study the coupling effect between branches. When the branches in the power network are far away from each other, the coupling effect can be neglected, and the channel capacity can be regarded as a linear relationship with the transmission distance and the number of branch lines. The simulation results show that the simplified algorithm has good consistency with the traditional calculation methods and can be used to analyze the influence of different network structures on the transmission performance of power lines and the rapid estimation of channel capacity.