發(fā)布時(shí)間：2019-03-21 15:34

【摘要】：近年來(lái),隨著智能電網(wǎng)的建設(shè)與發(fā)展,短距離無(wú)線通信技術(shù)受到了廣泛關(guān)注,已成為電力通信領(lǐng)域研究的熱點(diǎn)之一。短距離無(wú)線通信技術(shù)可實(shí)現(xiàn)電網(wǎng)末梢“最后幾百米”的接入,具有巨大的發(fā)展?jié)摿ΑＷ冸娬经h(huán)境監(jiān)測(cè)系統(tǒng)是電網(wǎng)的重要環(huán)節(jié),可以實(shí)現(xiàn)變電站現(xiàn)場(chǎng)運(yùn)行參數(shù)的實(shí)時(shí)監(jiān)測(cè)、智能控制各種設(shè)備,并對(duì)所采集的監(jiān)測(cè)信息實(shí)時(shí)監(jiān)控和運(yùn)行分析。將極大地提高變電站輔助設(shè)備安全運(yùn)行的自動(dòng)化水平,降低設(shè)備的事故發(fā)生率及事故搶修時(shí)間,對(duì)于保障電網(wǎng)安全、可靠、穩(wěn)定運(yùn)行具有重要意義。本文針對(duì)變電站環(huán)境監(jiān)測(cè)系統(tǒng)中現(xiàn)有的光纖網(wǎng)絡(luò)、工業(yè)以太網(wǎng)、現(xiàn)場(chǎng)總線等通信手段尚不完善,而短距離無(wú)線通信技術(shù)可實(shí)現(xiàn)靈活接入這一現(xiàn)狀,主要研究了變電站環(huán)境監(jiān)測(cè)系統(tǒng)的短距離無(wú)線通信組網(wǎng)技術(shù)。一方面,由于變電站環(huán)境監(jiān)測(cè)系統(tǒng)僅依靠監(jiān)測(cè)節(jié)點(diǎn)難以形成一個(gè)連通的監(jiān)測(cè)網(wǎng)絡(luò),且為保障電力的安全生產(chǎn),需考慮組網(wǎng)的實(shí)時(shí)性因素;另一方面,由于變電站環(huán)境監(jiān)測(cè)系統(tǒng)中存在復(fù)雜的電磁環(huán)境,相對(duì)于一般網(wǎng)絡(luò)來(lái)說(shuō)更容易遭受各種攻擊和干擾,為使網(wǎng)絡(luò)持續(xù)可靠地運(yùn)行,需盡可能提升網(wǎng)絡(luò)的抗毀性能,保障網(wǎng)絡(luò)的可靠性。本文針對(duì)以上問題開展了研究,首先分析并總結(jié)了現(xiàn)有的短距離無(wú)線通信網(wǎng)絡(luò)在實(shí)現(xiàn)網(wǎng)絡(luò)連通和提高網(wǎng)絡(luò)抗毀性方面的解決方法,說(shuō)明已有的解決方法在變電站環(huán)境監(jiān)測(cè)系統(tǒng)中的不適用性。其次,針對(duì)網(wǎng)絡(luò)連通問題提出了基于最短路徑的中繼部署算法,本算法首先確定各分區(qū)的代表節(jié)點(diǎn),沿著各代表節(jié)點(diǎn)與中心節(jié)點(diǎn)的最短路徑部署中繼節(jié)點(diǎn),并根據(jù)不同中繼節(jié)點(diǎn)覆蓋范圍的重合情況不斷調(diào)整中繼部署路徑的方向。利用實(shí)驗(yàn)仿真與最小生成樹算法和基于斯坦納三角近似算法對(duì)比分析,驗(yàn)證本算法的平均節(jié)點(diǎn)跳數(shù)較少,即實(shí)時(shí)性更高。然后,為提升網(wǎng)絡(luò)抗毀性提出了一種基于小世界網(wǎng)絡(luò)的抗毀性策略優(yōu)化方法,本策略將拓?fù)鋬?yōu)化算法和添加超級(jí)鏈路結(jié)合起來(lái)。針對(duì)性地將某些聚類系數(shù)較小的邊刪除,之后確定性的添加超級(jí)鏈路,通過(guò)對(duì)網(wǎng)絡(luò)中重要節(jié)點(diǎn)作用的相對(duì)弱化提高網(wǎng)絡(luò)抗毀性能。最后利用實(shí)驗(yàn)仿真與分析,驗(yàn)證了本策略在抗毀性能方面的優(yōu)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.
【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN92;TM63;TP274

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