Abstract
An adaptive dynamic bandwidth allocation algorithm based on Software Defined Network is proposed to solve the problems of poor flexibility and low resource utilization in Virtual Power Plant communication. The algorithm first proposes the algorithm system structure of the Virtual Power Plant based on the Software Defined Network, and then collects and analyzes the node state information, then modularizes the control and calculates the optimal bandwidth through the Software Defined Network Controller, and finally saves energy according to the resource allocation. The algorithm is developed with different authorization adjustment strategies, and compared with the traditional hybrid TDM/WDM-EPON dynamic algorithm, the experimental results show that the algorithm reduces the packet delay and average queue depth under medium and low load, and the percentage of energy saving under small load can reach 93.2%, which can effectively improve the utilization of bandwidth resources and achieve the energy-saving effect of Virtual Power Plant communication system itself.
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