發(fā)布時間：2018-03-19 12:46

  本文選題：新型組網(wǎng)模型　切入點：分級星形　出處：《蘭州交通大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：低壓電力線通信作為智能電網(wǎng)技術(shù)的一個重要分支,能有效促進電網(wǎng)技術(shù)與計算機信息技術(shù)的融合,同時,該技術(shù)也是實現(xiàn)電網(wǎng)、電信網(wǎng)、計算機網(wǎng)和有線電視網(wǎng)四網(wǎng)合一的關(guān)鍵技術(shù)。目前在智能電網(wǎng)的信息采集、智能家居、智能樓宇自動化、路燈控制系統(tǒng)中具有廣泛的應(yīng)用,在相關(guān)工業(yè)領(lǐng)域,得到了高度重視。目前對于低壓電力線通信的研究大多集中在物理層和數(shù)據(jù)鏈路層,對于通信網(wǎng)絡(luò)層的研究較少,研究深度不夠。低壓電力線通信組網(wǎng)以及動態(tài)路由技術(shù)在保障通信可靠性的基礎(chǔ)上,要能夠最大化的滿足實際低壓配電網(wǎng)結(jié)構(gòu),簡化網(wǎng)絡(luò)方式,更具科學(xué)化和規(guī)范化的網(wǎng)絡(luò)特點,無論對于網(wǎng)絡(luò)的運行管理和后期維護,還是在建設(shè)難度和成本上,都具有重要的意義。本文在參考了目前已研究的電力線通信組網(wǎng)模型和路由算法的基礎(chǔ)上,針對低壓電力線網(wǎng)絡(luò)拓撲結(jié)構(gòu),探索了一種更適合、高效、簡單的低壓電力線通信組網(wǎng)方案,并對其進行了設(shè)計和特性研究。所做的工作和技術(shù)流程如下:(1)首先對低壓配電系統(tǒng)結(jié)構(gòu)進行了分析,從實際低壓配電拓撲結(jié)構(gòu)中,通過轉(zhuǎn)化,得到一種星形結(jié)構(gòu)的低壓配電模型,通過理論分析,將此結(jié)構(gòu)直接應(yīng)用在低壓電力線通信組網(wǎng)中,根據(jù)目前國內(nèi)外目前組網(wǎng)的關(guān)鍵技術(shù),利用中繼技術(shù)實現(xiàn)各級子網(wǎng)的通信距離要求,提出了一種基于分級星形組網(wǎng)的新型低壓電力線組網(wǎng)模型。依此展開對新型組網(wǎng)模型的探索。(2)根據(jù)模型結(jié)構(gòu),對其組網(wǎng)原理和組網(wǎng)方法進行了研究,制定了詳細的組網(wǎng)方法流程,設(shè)計了具體的組網(wǎng)算法,星形子網(wǎng)中心點的選擇采用中心點選取算法,文中也對其方法做了詳細闡述。(3)針對新型組網(wǎng)模型,制定了路由傳輸協(xié)議,設(shè)計了數(shù)據(jù)包格式,詳細闡述了數(shù)據(jù)在新型組網(wǎng)通信過程中的數(shù)據(jù)傳輸流程,對新型組網(wǎng)的數(shù)據(jù)傳輸協(xié)議作了具體規(guī)范。在此基礎(chǔ)上,針對電力線通信具體時變性較強的問題,制定了本模型的動態(tài)路由重構(gòu)策略,當(dāng)網(wǎng)絡(luò)通信環(huán)境較差時,能及時針對實時的網(wǎng)絡(luò)環(huán)境進行路由重構(gòu),保障通信的可靠性。(4)借助OPNET網(wǎng)絡(luò)仿真軟件,對新型組網(wǎng)的路由協(xié)議進行了特性驗證,在相同環(huán)境下,分別搭建了分級星形組網(wǎng)模型和分簇組網(wǎng)模型,在各自的路由協(xié)議下極性數(shù)據(jù)傳輸仿真。結(jié)果表明,本次制定的協(xié)議在實現(xiàn)通信正常傳輸?shù)幕A(chǔ)上,能有效降低信道沖突率。(5)在Delphi7.0編譯環(huán)境下,設(shè)置有效通信距離為40m時,進行了初始化組網(wǎng),針對網(wǎng)絡(luò)通信狀況變差的狀況,設(shè)置有效距離由40m變化到30m,進行了動態(tài)路由特性驗證,得到了較好的效果,在有效保障故障節(jié)點通信可靠性的基礎(chǔ)上,簡化了網(wǎng)絡(luò)結(jié)構(gòu),減少了中繼數(shù)量,這對于網(wǎng)絡(luò)的后期維護和建設(shè)減材都具有正向促進作用。(6)最后對新型組網(wǎng)的通信傳輸?shù)暮臅r問題進行了研究,通過對比分析發(fā)現(xiàn),本次探索研究的新型低壓電力線通信模型存在耗時問題,在多種情況下的傳輸耗時都比分簇組網(wǎng)要略高一些,但是本組網(wǎng)模型針對的是智能電網(wǎng)的信息采集、智能樓宇自動化等對實時性要求不高的系統(tǒng),以一定的傳輸耗時來換取更優(yōu)良的組網(wǎng)系統(tǒng)是可取的。
[Abstract]:Low voltage power line communication is an important branch of smart grid technology, can effectively promote the integration of network technology and computer information technology at the same time, the technology is to achieve power grid, telecommunication network, computer network and cable television network four network is a key technology. At present in the collection of information, intelligent power grid intelligent intelligent Home Furnishing. Building automation, is widely used in the street lamp control system, in the industrial field, has been highly valued. At present the research on low-voltage power line communication is mostly in the physical layer and data link layer, network communication layer for less, the depth of research. The low voltage power line communication network and dynamic routing technology based on ensure the communication reliability, to maximize meet the actual distribution network structure, simplify the network, network features more scientific and standardized, both for the The operation of the network management and maintenance, or in the construction of the difficulty and cost, has important significance. Based on power line communication network model and the routing algorithm has been studied on the low-voltage power line network topology, to explore a more suitable, high efficiency, low voltage power line communication network the scheme is simple, and has carried on the research design and characteristics. The work and technical process are as follows: (1) the first of the low-voltage distribution system structure was analyzed from the actual low voltage distribution topology, through the transformation, get low voltage distribution model of a star structure, through theoretical analysis, the structure direct application in low-voltage power line communication network, according to the current domestic and foreign current network key technology, relay technology to realize the communication distance of sub network requirements, we propose a classification based on Star Group A new power line network networking model. This research of new network model. (2) according to the model structure, the network principle and the network method, develop a process with networking method, network specific algorithm design, the center point of the star subnet using the center point selection algorithm. In this paper, the method described in detail. (3) based on the new network model, making the design of routing protocol, the data packet format, detailed data in the data transmission process model in the process of network communication, data transmission protocol of the new network made specific norms. On this basis, according to the power line communication specific strong time-varying problem, developed a dynamic routing reconstruction strategy of the model, when the network communication environment, timely routing reconstruction for real-time network environment, security communication can be . (4) by using OPNET network simulation software, a new routing protocol to the network are characteristic of verification, in the same environment, namely to build a hierarchical star network model and clustering model, the routing protocols in each of the polarity of the data transmission simulation. The results show that this protocol based on the normal communication transmission, can effectively reduce the channel conflict rate. (5) in the Delphi7.0 compiler environment, set up effective communication distance is 40m, the initialization of network, for network communication in poor condition, set up the effective distance varies from 40m to 30m, the dynamic routing performance verification, get better in effect, effectively guarantee the reliability of fault node communication, simplify the network structure, reduce the number of relays, the network maintenance and construction and materials have a positive role in promoting. (6) at the end of the model group Time-consuming problem of communication network is studied, through the comparative analysis, the exploration of new low voltage power line communication model research is time-consuming, transmission in various conditions are time-consuming score networking is higher, but the network model is the information acquisition of the smart grid, intelligent building automation system not high requirements of real-time, to a certain time in exchange for the transmission network system more excellent is desirable.

【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM73

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本文編號：1634334