变电站环境监测系统的短距离无线通信组网技术研究

发布时间：2019-03-21 15:34

【摘要】：近年来,随着智能电网的建设与发展,短距离无线通信技术受到了广泛关注,已成为电力通信领域研究的热点之一。短距离无线通信技术可实现电网末梢“最后几百米”的接入,具有巨大的发展潜力。变电站环境监测系统是电网的重要环节,可以实现变电站现场运行参数的实时监测、智能控制各种设备,并对所采集的监测信息实时监控和运行分析。将极大地提高变电站辅助设备安全运行的自动化水平,降低设备的事故发生率及事故抢修时间,对于保障电网安全、可靠、稳定运行具有重要意义。本文针对变电站环境监测系统中现有的光纤网络、工业以太网、现场总线等通信手段尚不完善,而短距离无线通信技术可实现灵活接入这一现状,主要研究了变电站环境监测系统的短距离无线通信组网技术。一方面,由于变电站环境监测系统仅依靠监测节点难以形成一个连通的监测网络,且为保障电力的安全生产,需考虑组网的实时性因素;另一方面,由于变电站环境监测系统中存在复杂的电磁环境,相对于一般网络来说更容易遭受各种攻击和干扰,为使网络持续可靠地运行,需尽可能提升网络的抗毁性能,保障网络的可靠性。本文针对以上问题开展了研究,首先分析并总结了现有的短距离无线通信网络在实现网络连通和提高网络抗毁性方面的解决方法,说明已有的解决方法在变电站环境监测系统中的不适用性。其次,针对网络连通问题提出了基于最短路径的中继部署算法,本算法首先确定各分区的代表节点,沿着各代表节点与中心节点的最短路径部署中继节点,并根据不同中继节点覆盖范围的重合情况不断调整中继部署路径的方向。利用实验仿真与最小生成树算法和基于斯坦纳三角近似算法对比分析,验证本算法的平均节点跳数较少,即实时性更高。然后,为提升网络抗毁性提出了一种基于小世界网络的抗毁性策略优化方法,本策略将拓扑优化算法和添加超级链路结合起来。针对性地将某些聚类系数较小的边删除,之后确定性的添加超级链路,通过对网络中重要节点作用的相对弱化提高网络抗毁性能。最后利用实验仿真与分析,验证了本策略在抗毁性能方面的优越性。
[Abstract]:In recent years, with the construction and development of the smart power grid, the short-range wireless communication technology has been widely concerned and has become one of the hot spots in the field of electric power communication. The short-range wireless communication technology can realize the access of the power grid terminal "The last few hundred meters", and has great potential for development. The substation environmental monitoring system is an important part of the power grid, which can realize the real-time monitoring of the operating parameters of the substation and the intelligent control of various equipment, and real-time monitoring and operation analysis of the collected monitoring information. The automatic level of the safety operation of the auxiliary equipment of the transformer substation is greatly improved, the accident rate of the equipment and the emergency repair time can be reduced, and the safety, reliability and stable operation of the power grid are of great significance. This paper is based on the existing optical fiber network, industrial Ethernet, field bus and other communication means in the substation environmental monitoring system, and the short-range wireless communication technology can realize the flexible access. The short-distance wireless communication networking technology of the substation environmental monitoring system is mainly studied. on the one hand, because the substation environmental monitoring system only relies on the monitoring node to be difficult to form a communication monitoring network, It is easier to suffer from various attacks and interference with respect to the general network, so as to continuously and reliably operate the network, the anti-destruction performance of the network needs to be improved as much as possible, and the reliability of the network is guaranteed. In this paper, the research on the above problems is carried out, and the solution of the existing short-range wireless communication network in the implementation of the network communication and the improvement of the network's anti-destruction is first analyzed and the inapplicability of the existing solution method in the substation environmental monitoring system is explained. secondly, aiming at the problem of network connectivity, a relay deployment algorithm based on the shortest path is proposed, the algorithm first determines the representative nodes of each partition, and deploys the relay node along the shortest path of each representative node and the central node, And the direction of the relay deployment path is continuously adjusted according to the coincidence of the coverage of different relay nodes. The average node hop count of the algorithm is less, that is, the real-time performance is higher, based on the comparison and analysis of the experimental simulation and the minimum spanning tree algorithm and the Steiner triangulation algorithm. Then, an anti-destruction strategy optimization method based on a small-world network is proposed to improve the network survivability. The strategy combines the topology optimization algorithm with the addition of the super link. And the network anti-destruction performance is improved by the relative weakening of the role of the important nodes in the network. Finally, using the simulation and analysis of the experiment, the superiority of this strategy in the anti-destruction performance is verified.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN92;TM63;TP274

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