智能配电系统的通信网络建模与性能分析

Modeling and Performance Analysis of Communication Network of Intelligent Power Distribution System

由于我国的综合能源系统(IES)迅速发展,智能配电系统(SPDS)中集成了越来越多的先进设备和组件,伴随而来的是多样化的信息交互、海量的复杂数据、先进的智能设备使用所带来的技术挑战,因而如何可以在有限的通信网络资源内满足各种应用需求成为一个关键的问题。首先分析了在智能配电系统中的各类应用对于系统通信网络的性能要求,然后介绍了一种基于物联网技术的通信网络架构,并描述了其在智能配电系统中的应用和服务质量QoS要求。进一步地,基于排队论的带宽模型提出了一种考虑QoS的数据采集应用的预测带宽方法。最后,考虑三种典型智能配电站应用场景对网络性能进行分析,通过OPNET仿真,证明所提方法具有合理性与有效性。

As integrated energy systems(IES)continue to evolve,more and more advanced equipment and components are integrated into smart power distribution system(SPDS),accompanied by the technical challenges brought by diversified information interaction,massive complex data and the use of advanced intelligent equipment.Therefore,how to meet the needs of various applications within the limited communication network resources has become a key problem.Requirements of various applications in the SPDS on the performance of the communication network are first analyzed,then a communication network architecture based on Internet of Things technology is proposed,and its application and quality of service(QoS)requirements in intelligent distribution system are described.Furthermore,a bandwidth prediction method for data acquisition applications considering QoS is proposed based on the bandwidth model of queuing theory.Finally,the network performance of three typical application scenarios is analyzed,and the rationality and effectiveness of the proposed method are verified through OPNET simulation.