本文選題：智能配電網(wǎng)　切入點(diǎn)：無線融合網(wǎng)絡(luò)　出處：《華北電力大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：智能配電通信網(wǎng)絡(luò)建設(shè)的薄弱之處在接入網(wǎng)部分,目前不存在任何一類網(wǎng)絡(luò)可以完全為該部分通信業(yè)務(wù)提供滿足工業(yè)化需求的服務(wù)。無線融合網(wǎng)絡(luò)通過多種無線接入技術(shù)為用戶提供可靠、安全、高效的服務(wù),極其適合應(yīng)用在智能配電通信網(wǎng)絡(luò)接入部分,因此對(duì)無線融合網(wǎng)絡(luò)關(guān)鍵問題的研究顯得尤為重要。其中異構(gòu)融合網(wǎng)絡(luò)中負(fù)載均衡及無線傳感器網(wǎng)絡(luò)中路由選擇是無線融合網(wǎng)絡(luò)研究的兩個(gè)關(guān)鍵問題,且是影響系統(tǒng)資源利用率及能量消耗的首要因素。因此,設(shè)計(jì)適于智能配電通信接入網(wǎng)的異構(gòu)融合網(wǎng)絡(luò)負(fù)載均衡策略及無線傳感器網(wǎng)絡(luò)路由選擇策略,在無線融合網(wǎng)絡(luò)的研究中扮演著至關(guān)重要的角色。 在對(duì)智能配電通信網(wǎng)絡(luò)及業(yè)務(wù)模型分析的基礎(chǔ)上,構(gòu)建了面向智能配電的無線融合網(wǎng)絡(luò)模型。該模型不僅在配電網(wǎng)接入層支持多種無線接入技術(shù)重疊覆蓋,而且以無線傳感器網(wǎng)絡(luò)作為感知延伸層,滿足未來智能電網(wǎng)無縫覆蓋的通信需求。 針對(duì)異構(gòu)融合網(wǎng)絡(luò)中負(fù)載均衡問題,首先結(jié)合智能配電通信業(yè)務(wù)需求,提出一種基于物元分析的負(fù)載均衡算法,算法從接入控制的角度考慮負(fù)載均衡問題,將信號(hào)強(qiáng)度、網(wǎng)絡(luò)可用資源及網(wǎng)絡(luò)阻塞率作為評(píng)價(jià)指標(biāo),通過物元分析和熵權(quán)法得到各個(gè)網(wǎng)絡(luò)質(zhì)量等級(jí)排序,根據(jù)排序結(jié)果對(duì)不同類型新到配電通信業(yè)務(wù)按照優(yōu)先級(jí)進(jìn)行有差別的服務(wù)。其次,綜合考慮重載網(wǎng)絡(luò)的情況和業(yè)務(wù)的準(zhǔn)入控制,結(jié)合資源借用和流量轉(zhuǎn)移技術(shù),提出一種混合動(dòng)態(tài)負(fù)載均衡算法。首先利用三角模融合算子選擇可借用資源的網(wǎng)絡(luò),通過同構(gòu)網(wǎng)絡(luò)間借用資源減輕重載網(wǎng)絡(luò)的負(fù)載或根據(jù)轉(zhuǎn)移非實(shí)時(shí)、占用資源多業(yè)務(wù)優(yōu)先原則轉(zhuǎn)移部分業(yè)務(wù)到輕載網(wǎng)絡(luò)以緩解網(wǎng)絡(luò)的重載程度；其次對(duì)新產(chǎn)生的配電通信業(yè)務(wù),將其接入到可用資源率最大的網(wǎng)絡(luò),以均衡各個(gè)網(wǎng)絡(luò)間的負(fù)載。 對(duì)無線傳感器網(wǎng)絡(luò)路由選擇問題,在研究了現(xiàn)有鏈?zhǔn)铰酚伤惴ǖ幕A(chǔ)上,提出一種基于D-S證據(jù)理論的鏈?zhǔn)铰酚伤惴�。該算法在建鏈階段通過考慮已經(jīng)加入鏈的節(jié)點(diǎn),使距離最近的兩個(gè)節(jié)點(diǎn)直接相連而形成一條有分支的鏈,以此保證形成的鏈中不存在長(zhǎng)鏈；在決策鏈?zhǔn)坠?jié)點(diǎn)時(shí),利用D-S證據(jù)理論,對(duì)節(jié)點(diǎn)到基站距離和節(jié)點(diǎn)剩余能量的評(píng)價(jià)結(jié)果進(jìn)行融合,從而決策出符合要求的鏈?zhǔn)坠?jié)點(diǎn)。仿真結(jié)果表明,該算法在均衡網(wǎng)絡(luò)能耗的同時(shí),大大延長(zhǎng)了網(wǎng)絡(luò)壽命。
[Abstract]:The weakness of the construction of intelligent distribution communication network is in the access network. At present, there is not any kind of network that can completely provide services to meet the industrial requirements for this part of the communication services. Wireless convergence networks provide reliable, secure and efficient services to users through various wireless access technologies. It is very suitable for intelligent distribution and communication network access, Therefore, it is very important to study the key problems of wireless fusion network, in which load balancing in heterogeneous convergence network and routing selection in wireless sensor network are two key issues in the research of wireless fusion network. Therefore, a load balancing strategy for heterogeneous fusion networks and a routing strategy for wireless sensor networks are designed for intelligent distribution communication access networks. It plays an important role in the research of wireless fusion network. Based on the analysis of intelligent distribution communication network and service model, a wireless fusion network model for intelligent distribution is constructed, which not only supports overlapping coverage of multiple wireless access technologies in the access layer of distribution network. Furthermore, wireless sensor network (WSN) is used as the sensing extension layer to meet the communication requirement of seamless coverage of smart grid in the future. In order to solve the load balancing problem in heterogeneous fusion network, a load balancing algorithm based on matter-element analysis is proposed, which considers the load balancing problem from the point of view of access control, and combines the demand of intelligent distribution communication service. The available resources and blocking rate of the network are used as evaluation indexes, and the ranking of each network quality grade is obtained by matter element analysis and entropy weight method. According to the results of sorting, different types of new distribution communication services are provided with different services according to their priorities. Secondly, considering the situation of heavy load network and the access control of service, combining the technology of resource borrowing and flow transfer, In this paper, a hybrid dynamic load balancing algorithm is proposed. Firstly, the triangular modular fusion operator is used to select the network with borrowed resources, which can reduce the load of the heavy-load network or reduce the non-real-time load according to the transfer between isomorphic networks. The principle of multi-service priority transfers some services to the light load network to alleviate the heavy load degree of the network. Secondly, the newly generated distribution communication services are connected to the network with the highest available resources to balance the load between the various networks. In this paper, a chain routing algorithm based on D-S evidence theory is proposed to solve the routing problem in wireless sensor networks. The nearest two nodes are connected directly to form a branched chain, so as to ensure that there is no long chain in the formed chain, and the D-S evidence theory is used to make use of the D-S evidence theory when the first node of the chain is decided. The evaluation results of the distance from the node to the base station and the residual energy of the node are fused to determine the chain head node which meets the requirements. The simulation results show that the proposed algorithm not only equalizes the network energy consumption but also greatly prolongs the network lifetime.
【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】：2014
【分類號(hào)】：TM76

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