本文選題：廣域網(wǎng) + 通信架構(gòu)　； 參考：《廣西大學(xué)》2014年博士論文

【摘要】：電力系統(tǒng)越來越依賴于基于通信的信息交互。基于網(wǎng)絡(luò)的信息高速公路已成為輸配電系統(tǒng)的信息通信平臺(tái)和技術(shù)支撐。通信網(wǎng)絡(luò)與電力系統(tǒng)的可靠交互與有機(jī)融合是當(dāng)今智能電網(wǎng)發(fā)展的關(guān)鍵。電力系統(tǒng)廣域網(wǎng)對(duì)不同通信業(yè)務(wù)在通信的實(shí)時(shí)性、可靠性和安全性等方面都有著不同的通信需求,其中以廣域保護(hù)系統(tǒng)和廣域控制系統(tǒng)對(duì)通信系統(tǒng)的性能要求最為嚴(yán)格。 電力系統(tǒng)廣域網(wǎng)在變電站內(nèi)和變電站間進(jìn)行信息交換,特定時(shí)期關(guān)鍵信息的傳輸需要安全、可靠的通信系統(tǒng)。變電站自動(dòng)化通信系統(tǒng)和廣域測(cè)量通信系統(tǒng)都是電力系統(tǒng)廣域網(wǎng)的重要組成部分,前者屬于局域網(wǎng)內(nèi)部通信,而后者屬于廣域通信,二者應(yīng)分別討論。因此,有必要針對(duì)廣域通信網(wǎng)絡(luò)中相關(guān)的特定要求從多方面展開分析,包含與通信相關(guān)的軟、硬件可靠性分析與評(píng)估,研究建立符合實(shí)際需求的網(wǎng)絡(luò)模型,提出合適的模型求解算法,建立一整套性能指標(biāo),定量評(píng)估系統(tǒng)的可靠性和實(shí)時(shí)性,為電力系統(tǒng)工程項(xiàng)目實(shí)施提供參考�；趫D論思想,從可靠性和實(shí)時(shí)性兩方面對(duì)廣域網(wǎng)通信系統(tǒng)的拓?fù)浼軜?gòu)和路由選擇方面進(jìn)行了深入的研究。 首先,通過對(duì)通信介質(zhì)、通信技術(shù)的對(duì)比分析,結(jié)合電力廣域網(wǎng)通信系統(tǒng)的可靠性、實(shí)時(shí)性和安全性性能需求,從接入方式、承載模式和組網(wǎng)方式等方面提出適合當(dāng)前性能需求的廣域網(wǎng)通信系統(tǒng)。 其次,通信網(wǎng)絡(luò)的性能是影響變電站自動(dòng)化功能的重要因素。采用連通度和韌性度等指標(biāo)定量評(píng)估了幾種典型拓?fù)浣Y(jié)構(gòu)的變電站自動(dòng)化通信網(wǎng)絡(luò)的抗毀性及生存性。根據(jù)PRP、HSR和RSTP三種冗余協(xié)議的工作機(jī)理,建立基于PRP、HSR冗余協(xié)議的變電站通信網(wǎng)絡(luò)系統(tǒng)的模型,著重考慮系統(tǒng)的可修復(fù)和冗余等動(dòng)態(tài)特性,采用動(dòng)態(tài)故障樹方法對(duì)變電站保護(hù)系統(tǒng)建模并定量評(píng)估其動(dòng)態(tài)可靠性。 第三,如何保證信息傳輸?shù)目煽啃院蛯?shí)時(shí)性是廣域測(cè)量系統(tǒng)的核心。通信網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)優(yōu)化設(shè)計(jì)對(duì)信息的傳輸至關(guān)重要,影響著整個(gè)網(wǎng)絡(luò)的性能。根據(jù)廣域測(cè)量通信系統(tǒng)的流量狀況,結(jié)合可靠性和實(shí)時(shí)性兩方面的考慮,建立相應(yīng)的度量指標(biāo)及其約束條件,設(shè)計(jì)成本最小化的網(wǎng)絡(luò)優(yōu)化模型,并基于圖論思想提出改進(jìn)的飽和割集的算法對(duì)模型進(jìn)行求解,實(shí)現(xiàn)廣域測(cè)量通信架構(gòu)的優(yōu)化設(shè)計(jì)。 第四,研究并建立了基于MPLS流量工程并符合電力系統(tǒng)廣域保護(hù)QoS要求的廣域保護(hù)通信系統(tǒng)的傳輸路徑選擇模型。提出采用啟發(fā)式遺傳算法對(duì)模型進(jìn)行求解,利用自然數(shù)編碼方法,結(jié)合電力系統(tǒng)廣域通信的延時(shí)特性來解決流量均衡的路由選擇問題,提高了編碼效率,并符合了電力系統(tǒng)的實(shí)時(shí)性要求。
[Abstract]:The power system is more and more dependent on the communication based information interaction. The information highway based on the network has become the information and communication platform and technical support of the transmission and distribution system. The reliable interaction and organic integration of the communication network and the power system is the key to the development of the smart grid. There are different communication requirements in the aspects of real time, reliability and security. The performance of the communication system is the most strict with the wide area protection system and the wide area control system.
The wide area network of the power system is exchanged between the substation and the substation. The transmission of the key information in a particular period needs a safe and reliable communication system. The substation automation communication system and the wide area measurement communication system are all important parts of the wide area network of the power system. The former belongs to the internal LAN communication, and the latter belongs to the wide area. Communication, the two should be discussed separately. Therefore, it is necessary to analyze the specific requirements related to the wide area communication network from various aspects, including the software and hardware reliability analysis and evaluation related to communication, to establish a network model which is in line with the actual requirements, to put forward a suitable model solving algorithm, to establish a complete set of performance indicators and to quantify the quantitative evaluation. The reliability and real-time performance of the system will provide reference for the implementation of the power system project. Based on the graph theory, the topology and routing of the WAN communication system are deeply studied from two aspects of reliability and real-time.
First, through the comparison and analysis of communication medium and communication technology, combining the reliability of the power wide area network communication system, the real-time and security performance requirements, this paper proposes a wide area network communication system which is suitable for the current performance requirements from the access mode, the bearing mode and the networking mode.
Secondly, the performance of the communication network is an important factor affecting the substation automation function. The survivability and survivability of the substation automation communication networks with several typical topology structures are quantitatively evaluated by using connectivity and toughness indexes. Based on the working mechanism of the three redundant protocols of PRP, HSR and RSTP, a redundant protocol based on PRP and HSR is established. The model of the substation communication network system, focusing on the dynamic characteristics of the repairable and redundant systems, uses the dynamic fault tree method to model the substation protection system and evaluate its dynamic reliability.
Third, how to ensure the reliability and real time of information transmission is the core of the wide area measurement system. The optimization design of the communication network topology is very important to the transmission of information and affects the performance of the whole network. According to the two aspects of the traffic condition of the wide area measurement communication system and the consideration of the reliability and the real time, the corresponding measurement is set up. The index and its constraint conditions are designed to minimize the cost of the network. Based on the graph theory, an improved saturated cut set algorithm is proposed to solve the model, and the optimization design of the wide area measurement communication architecture is realized.
Fourth, the transmission path selection model of wide area protection communication system based on MPLS traffic engineering and the wide area protection QoS requirements of power system is studied and established. A heuristic genetic algorithm is used to solve the model, and the natural number coding method is used to solve the traffic equilibrium path by combining the delay characteristics of the power system wide domain communication. By choosing the problem, the coding efficiency is improved, and the real-time requirement of the power system is met.
【學(xué)位授予單位】：廣西大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN915.853

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本文編號(hào)：2000611