本文選題：配電網(wǎng) + 電能損耗��； 參考：《昆明理工大學(xué)》2017年碩士論文

【摘要】：電能損耗就是配電網(wǎng)中的各種電能元件的電能損失,通常也簡稱為線損,即是從配電網(wǎng)的首端(通常是變電站)到關(guān)口表,或者是關(guān)口表到用戶電能表的過程中所損失的電能。配電網(wǎng)電能損耗的高低間接的體現(xiàn)了一個電力企業(yè)在電力損耗規(guī)劃上所做出的貢獻(xiàn)。配電網(wǎng)電能損耗是各企業(yè)經(jīng)濟(jì)效益的核心問題,只有將損耗和線損率逐步提高才能提高供電局的企業(yè)效益。因此各企業(yè)要把降低線損作為企業(yè)的努力目標(biāo)。本文主要研究了以下內(nèi)容:(1)首先分析了配電網(wǎng)電能損耗的各種理論計算方法和線損的相關(guān)概念,同時分析國內(nèi)外配電網(wǎng)電能損耗研究現(xiàn)狀�；谥械蛪号潆娋W(wǎng)營銷數(shù)據(jù)的殘缺,以及中低壓配電網(wǎng)的網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)復(fù)雜而繁瑣,詳細(xì)介紹了中低壓配電網(wǎng)電能損耗的計算方法和模型。由于電力網(wǎng)負(fù)荷類型較多,按照負(fù)荷的不同類型對其進(jìn)行了分類和建立對應(yīng)的電能損耗計算方法。(2)基于云南S市某地區(qū)的配電網(wǎng)營銷數(shù)據(jù)和臺區(qū)的電能計量數(shù)據(jù)、配電網(wǎng)線路損耗、配電變壓器損耗,如銅損和鐵損等來綜合分析和計算電能損耗和配電網(wǎng)線損率。同時提出一些關(guān)于低壓電網(wǎng)電能損耗的計算模型來實現(xiàn)對云南省S市某地區(qū)配網(wǎng)進(jìn)行了比較詳細(xì)的線損理論計算和中低壓線損率。根據(jù)對配電網(wǎng)電能損耗的理論計算和線損率的分析,分析了配電網(wǎng)電能損耗中的各個元件的電能損耗所占百分比。(3)最后通過建立BP神經(jīng)網(wǎng)絡(luò)模型,對配電網(wǎng)中導(dǎo)線線路上的損耗進(jìn)行了基于實測數(shù)據(jù)的訓(xùn)練集和測試集的預(yù)測和誤差分析,同時在原GRNN的廣義神經(jīng)網(wǎng)絡(luò)模型的基礎(chǔ)上,利用粒子群算法對廣義神經(jīng)網(wǎng)絡(luò)模型進(jìn)行了改進(jìn)和優(yōu)化,建立了 PSO-GRNN的復(fù)合學(xué)習(xí)算法模型,對S地區(qū)配電網(wǎng)電能總損耗進(jìn)行了監(jiān)測與分析,對S地區(qū)配電網(wǎng)電能損耗上的預(yù)測和降損起到了一定的理論指導(dǎo)作用。
[Abstract]:Power loss is the power loss of various power components in the distribution network, usually referred to as line loss, that is, from the first end of the distribution network (usually substation) to the gate meter, or from the gate meter to the user electricity meter. The power loss of distribution network indirectly reflects the contribution of a power enterprise in power loss planning. The power loss of distribution network is the core problem of the economic benefit of each enterprise. Only by increasing the loss and line loss rate step by step can the enterprise benefit of the power supply bureau be improved. Therefore each enterprise should reduce the line loss as the enterprise's goal. This paper mainly studies the following contents: (1) first of all, this paper analyzes various theoretical calculation methods of power loss and related concepts of line loss in distribution network, at the same time, it analyzes the present situation of power loss research in distribution network at home and abroad. Based on the incomplete marketing data of medium and low voltage distribution network and the complex and complicated network topology of medium and low voltage distribution network, this paper introduces the calculation method and model of power loss in medium and low voltage distribution network in detail. Because there are many load types in power network, according to the different types of load, it is classified and the corresponding calculation method of power loss is established. It is based on the distribution network marketing data in S city of Yunnan province and the electric energy measurement data in the station area. Distribution network line loss, distribution transformer loss, such as copper loss and iron loss, to analyze and calculate the power loss and distribution network line loss rate. At the same time, some calculation models about the power loss of low voltage power network are put forward to realize the theoretical calculation of line loss and the line loss rate of medium and low voltage in a distribution network in S city of Yunnan Province in detail. According to the theoretical calculation of power loss in distribution network and the analysis of line loss rate, the percentage of power loss of each component in distribution network is analyzed. Finally, the BP neural network model is established. On the basis of the training set and test set based on the measured data, the prediction and error analysis of the losses on the traverse line in the distribution network are carried out. At the same time, on the basis of the original generalized neural network model of GRNN, The generalized neural network model is improved and optimized by particle swarm optimization (PSO). The compound learning algorithm model of PSO-GRNN is established, and the total power loss of distribution network in S area is monitored and analyzed. It plays an important role in prediction and reduction of power loss in S area distribution network.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP183;TM744

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