智能变电站网络系统性能测试技术研究

发布时间：2018-08-31 19:09

【摘要】：智能变电站的信息传递依靠网络。由于新技术不断应用,智能变电站的网络核心设备交换机的测试标准和用以评估性能的规范体系还不够健全,也缺乏评估手段,不能够全面体现智能变电站网络交换机的性能水平,研究一套完整的性能测试评估方法可以很好的对交换机网络性能水平进行评估,有利于智能变电站网络的优化。论文首先通过分析交换机网络性能测试指标和智能变电站网络自身特点,确定智能变电站网络交换机测试方法,在分析现有对交换机性能评估方案优缺点的基础上,提出一种基于模糊集和信息熵理论的评估方案,实现了对智能电网交换机的自动评分。应用模糊集合原理对交换机的流量、转发延时、地址容量等各个方面对交换机的性能进行全面分析。利用信息熵理论,按照各评价指标的熵值大小来确定出各个指标熵权,把熵权和层次法确定出的权值进行综合确定出最后的权重,并建立交换机的综合评价模型。在对网络中交换机进行测试评估之后,对智能变电站网络结构进行分析优化,提高过程层网络性能。根据智能变电站网络自身种种特点,以实际的新建智能变电站为对象,通过对变电站网络拓扑结构的优化以及VLAN划分的优化,来减少其因为智能变电站大量网络报文而引起的网络压力和延迟问题,为提高智能变电站过程层网络可靠性提供一种可行的手段。最后,利用软件WPF开发了智能变电站交换机网络性能测试评估系统,该测试评估系统能够指导交换机网络性能测试并为测试评估提供支撑,同时为电网网络中交换机测试和选型等工作提供数据基础。
[Abstract]:Intelligent substation information transmission depends on the network. Because of the continuous application of the new technology, the test standard and the standard system used to evaluate the performance of the network core equipment switch of the intelligent substation are not perfect enough, and the evaluation means are also lacking. The performance level of intelligent substation network switch can not be fully reflected. A complete set of performance test and evaluation method can be used to evaluate the switch network performance level, which is beneficial to the optimization of intelligent substation network. Firstly, by analyzing the performance test index of switch network and the characteristics of intelligent substation network, this paper determines the test method of intelligent substation network switch, and analyzes the advantages and disadvantages of the existing scheme of switch performance evaluation. An evaluation scheme based on fuzzy set and information entropy theory is proposed, and the automatic grading of smart grid switch is realized. The fuzzy set principle is applied to analyze the performance of the switch from the aspects of traffic, forwarding delay, address capacity and so on. Based on the information entropy theory, the entropy weight of each index is determined according to the entropy value of each evaluation index, the final weight is determined by synthesizing the entropy weight and the weight determined by the hierarchical method, and the comprehensive evaluation model of the switch is established. After testing and evaluating switches in the network, the network structure of intelligent substation is analyzed and optimized to improve the performance of process layer network. According to the characteristics of intelligent substation network, taking the actual newly built intelligent substation as the object, the topology structure of substation network and the optimization of VLAN partition are optimized. In order to reduce the network pressure and delay caused by a large number of network packets in intelligent substation, it provides a feasible means to improve the reliability of process layer network in intelligent substation. Finally, the intelligent substation switch network performance test and evaluation system is developed by using the software WPF. The test and evaluation system can guide the switch network performance test and provide support for the test evaluation. At the same time, it provides the data basis for the test and selection of switch in power network.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM76;TM63

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