【摘要】：智能變電站的信息傳遞依靠網(wǎng)絡(luò)。由于新技術(shù)不斷應(yīng)用,智能變電站的網(wǎng)絡(luò)核心設(shè)備交換機(jī)的測(cè)試標(biāo)準(zhǔn)和用以評(píng)估性能的規(guī)范體系還不夠健全,也缺乏評(píng)估手段,不能夠全面體現(xiàn)智能變電站網(wǎng)絡(luò)交換機(jī)的性能水平,研究一套完整的性能測(cè)試評(píng)估方法可以很好的對(duì)交換機(jī)網(wǎng)絡(luò)性能水平進(jìn)行評(píng)估,有利于智能變電站網(wǎng)絡(luò)的優(yōu)化。論文首先通過(guò)分析交換機(jī)網(wǎng)絡(luò)性能測(cè)試指標(biāo)和智能變電站網(wǎng)絡(luò)自身特點(diǎn),確定智能變電站網(wǎng)絡(luò)交換機(jī)測(cè)試方法,在分析現(xiàn)有對(duì)交換機(jī)性能評(píng)估方案優(yōu)缺點(diǎn)的基礎(chǔ)上,提出一種基于模糊集和信息熵理論的評(píng)估方案,實(shí)現(xiàn)了對(duì)智能電網(wǎng)交換機(jī)的自動(dòng)評(píng)分。應(yīng)用模糊集合原理對(duì)交換機(jī)的流量、轉(zhuǎn)發(fā)延時(shí)、地址容量等各個(gè)方面對(duì)交換機(jī)的性能進(jìn)行全面分析。利用信息熵理論,按照各評(píng)價(jià)指標(biāo)的熵值大小來(lái)確定出各個(gè)指標(biāo)熵權(quán),把熵權(quán)和層次法確定出的權(quán)值進(jìn)行綜合確定出最后的權(quán)重,并建立交換機(jī)的綜合評(píng)價(jià)模型。在對(duì)網(wǎng)絡(luò)中交換機(jī)進(jìn)行測(cè)試評(píng)估之后,對(duì)智能變電站網(wǎng)絡(luò)結(jié)構(gòu)進(jìn)行分析優(yōu)化,提高過(guò)程層網(wǎng)絡(luò)性能。根據(jù)智能變電站網(wǎng)絡(luò)自身種種特點(diǎn),以實(shí)際的新建智能變電站為對(duì)象,通過(guò)對(duì)變電站網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)的優(yōu)化以及VLAN劃分的優(yōu)化,來(lái)減少其因?yàn)橹悄茏冸娬敬罅烤W(wǎng)絡(luò)報(bào)文而引起的網(wǎng)絡(luò)壓力和延遲問(wèn)題,為提高智能變電站過(guò)程層網(wǎng)絡(luò)可靠性提供一種可行的手段。最后,利用軟件WPF開(kāi)發(fā)了智能變電站交換機(jī)網(wǎng)絡(luò)性能測(cè)試評(píng)估系統(tǒng),該測(cè)試評(píng)估系統(tǒng)能夠指導(dǎo)交換機(jī)網(wǎng)絡(luò)性能測(cè)試并為測(cè)試評(píng)估提供支撐,同時(shí)為電網(wǎng)網(wǎng)絡(luò)中交換機(jī)測(cè)試和選型等工作提供數(shù)據(jù)基礎(chǔ)。
[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.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：TM76;TM63

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