本文選題：配電網(wǎng)絡(luò) + 可靠性�。� 參考：《南昌大學(xué)》2017年碩士論文

【摘要】：保障用戶可靠用電作為配電網(wǎng)絡(luò)規(guī)劃、建設(shè)和運(yùn)行的核心任務(wù),有明確的指標(biāo)要求以考核配電網(wǎng)絡(luò)供電可靠性,從而指導(dǎo)配電網(wǎng)絡(luò)規(guī)劃和運(yùn)行。本文研究內(nèi)容主要圍繞配電網(wǎng)絡(luò)可靠性問題展開,具體體現(xiàn)在可靠性評估算法性能的提升和以開關(guān)優(yōu)化配置為手段的可靠性優(yōu)化。針對現(xiàn)有可靠性評估算法存在的冗余分析問題,以故障發(fā)生后開關(guān)類型所關(guān)聯(lián)動(dòng)作特性為切入點(diǎn),結(jié)合網(wǎng)絡(luò)分區(qū)和最小路思想,構(gòu)建基于開關(guān)特性的配電網(wǎng)可靠性等效疊加評估算法:在網(wǎng)絡(luò)分區(qū)和區(qū)域最小路形成過程中將系統(tǒng)元件指標(biāo)等效疊加于開關(guān)元件,得到開關(guān)等效可靠性矩陣;將開關(guān)元件作為分析對象,以開關(guān)等效可靠性矩陣和區(qū)域最小路矩陣為媒介,計(jì)算可靠性指標(biāo)。IEEE RBTS Bus 2、4、6系統(tǒng)結(jié)果表明所提算法能避免冗余分析,有力提升了計(jì)算速度和效率。介于數(shù)學(xué)解析法對于求解復(fù)雜開關(guān)優(yōu)化配置問題的局限和不足,引入含個(gè)體相關(guān)和成功父代選擇的差分進(jìn)化算法,以個(gè)體相關(guān)機(jī)制彌補(bǔ)參數(shù)設(shè)置和變異策略選擇對算法性能的影響,以成功父代選擇克制迭代過程中的尋優(yōu)停滯。從多個(gè)方面對算法的性能進(jìn)行了測試,算例結(jié)果表明算法可行且具有良好的尋優(yōu)成功率和迭代收斂速度。針對開關(guān)優(yōu)化配置問題中負(fù)荷增長導(dǎo)致的等年值法運(yùn)用受限以及負(fù)荷波動(dòng)問題,構(gòu)建負(fù)荷及單位停電損失多態(tài)模型,以規(guī)劃年限內(nèi)總的開關(guān)費(fèi)用和總的停電損失費(fèi)用為元素,構(gòu)建考慮負(fù)荷增長的多目標(biāo)開關(guān)優(yōu)化配置模型,在計(jì)及系統(tǒng)可靠性約束的同時(shí),考慮單個(gè)負(fù)荷點(diǎn)對可靠性的要求即用戶可靠性選擇。IEEE RBTS Bus 6系統(tǒng)的F4饋線的開關(guān)配置結(jié)果驗(yàn)證了目標(biāo)函數(shù)權(quán)重因子、用戶可靠性選擇以及負(fù)荷增長對開關(guān)優(yōu)化配置結(jié)果的影響。
[Abstract]:As the core task of distribution network planning, construction and operation, it is the core task to ensure the reliable use of electricity for users. There are clear indicators to check the reliability of power supply in distribution network, thus guiding the planning and operation of distribution network. This paper mainly focuses on the reliability of distribution network, which is embodied in the performance improvement of reliability evaluation algorithm and the reliability optimization by means of switch optimal configuration. Aiming at the redundancy analysis problem existing in the existing reliability evaluation algorithms, the characteristics of the operation associated with the switch type after the fault are taken as the breakthrough point, and the network partition and the minimum path are combined with the idea of the network partition and the minimum path. The equivalent superposition evaluation algorithm of distribution network reliability based on switching characteristics is constructed. In the process of network partition and area minimum path formation, the system component index is superimposed on the switch element, and the switch equivalent reliability matrix is obtained. Taking the switch element as the analysis object and taking the switch equivalent reliability matrix and the region minimum path matrix as the media, the results of the IEEE RBTS bus 4N 6 system show that the proposed algorithm can avoid redundant analysis and improve the calculation speed and efficiency. In view of the limitation and deficiency of mathematical analytic method for solving complex switching optimization problem, a differential evolutionary algorithm with individual correlation and successful parent selection is introduced. The individual correlation mechanism is used to compensate for the influence of parameter setting and mutation strategy selection on the performance of the algorithm, and the optimization stagnation in the iterative process of successful parent selection is obtained. The performance of the algorithm is tested from several aspects. The results show that the algorithm is feasible and has a good success rate of optimization and convergence rate of iteration. In view of the problem of load growth and load fluctuation in the optimal allocation of switches, a polymorphic model of load and unit blackout loss is constructed, which takes the total switching cost and total blackout loss cost as the elements. A multi-objective switch optimal configuration model considering load growth is constructed, which takes into account the system reliability constraints at the same time. Considering the reliability requirement of a single load point, that is, the switch configuration of the F4 feeder of IEEE RBTS bus 6 system, the effect of the objective function weight factor, the user reliability selection and the load growth on the switch optimal configuration is verified.
【學(xué)位授予單位】：南昌大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM732

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本文編號：2107240