本文選題：配電網(wǎng) + 變電站　； 參考：《西安科技大學(xué)》2014年碩士論文

【摘要】：配電網(wǎng)是電力輸送到用戶(hù)的最后環(huán)節(jié)，其可靠性直接影響到對(duì)用戶(hù)的供電質(zhì)量，配電網(wǎng)的最大供電能力的評(píng)估與計(jì)算也成為了評(píng)價(jià)配電網(wǎng)的重要指標(biāo)之一。最大供電能力(Total Supply Capability, TSC)是指一定供電區(qū)域內(nèi)配電網(wǎng)滿(mǎn)足N-1安全準(zhǔn)則條件下并考慮到實(shí)際運(yùn)行約束下的最大負(fù)荷供應(yīng)能力。 對(duì)配電網(wǎng)最大供電能力進(jìn)行合理準(zhǔn)確的評(píng)估與計(jì)算對(duì)提高配電網(wǎng)的可靠性有著重要的意義，不僅能夠反映配電網(wǎng)的供電水平，更重要的是能夠通過(guò)基于最大供電能力的一系列指標(biāo)發(fā)現(xiàn)配電網(wǎng)的薄弱環(huán)節(jié)等，還能夠?yàn)樨?fù)荷的合理優(yōu)化，提高設(shè)備的利用水平等提供指導(dǎo)。 目前的供電能力的研究主要集中在對(duì)計(jì)算模型的搭建和修正。計(jì)算方法主要有解析法和模型法兩類(lèi)，典型的有：容載比法、最大最小負(fù)荷倍數(shù)法、網(wǎng)絡(luò)最大流法、基于直流潮流模型和交流潮流模型的計(jì)算方法以及模糊計(jì)算方法等。 本文首先對(duì)已有的最大供電能力的方法進(jìn)行了比較和分析，，建立本文所需的計(jì)算模型，建立起設(shè)備的容量矩陣，負(fù)荷轉(zhuǎn)移關(guān)系矩陣等。 其次建立反映限制配電網(wǎng)供電能力的主要因素的分層供電能力指標(biāo)體系。定義了饋線(xiàn)層最大供電能力、變壓器層最大供電能力、饋線(xiàn)與變壓器共同約束的最大供電能力、進(jìn)線(xiàn)層最大供電能力和綜合最大供電能力等分層最大供電能力指標(biāo)，定義了反映相鄰層設(shè)備供電能力的匹配程度的匹配度系列指標(biāo)，定義了反映各設(shè)備的實(shí)際負(fù)荷與最大供電能力條件下應(yīng)供出的負(fù)荷的差異的充盈度系列指標(biāo)。 最后論述了基于上述指標(biāo)對(duì)限制配電網(wǎng)最大供電能力的因素進(jìn)行分析的方法。結(jié)合實(shí)例對(duì)所提出的指標(biāo)和方法進(jìn)行了詳細(xì)說(shuō)明，結(jié)果表明了其可行性和有效性。
[Abstract]:Distribution network is the last link of power transmission to users, and its reliability directly affects the quality of power supply to users. The evaluation and calculation of the maximum power supply capacity of distribution network has become one of the important indexes of power distribution network evaluation. Total supply capability (TSC) refers to the maximum load supply capacity of the distribution network in a certain power supply area under the condition of N-1 security criterion and considering the actual operation constraints. It is important to evaluate and calculate the maximum power supply capacity of distribution network reasonably and accurately, which can not only reflect the power supply level of distribution network, but also improve the reliability of distribution network. More importantly, it can find the weak links of the distribution network through a series of indexes based on the maximum power supply capacity, and can also provide guidance for the rational optimization of the load and the improvement of the utilization level of the equipment. At present, the research of power supply capacity mainly focuses on the construction and modification of the calculation model. There are two kinds of calculation methods: analytical method and model method. Typical methods include capacity load ratio method, maximum and minimum load multiple method, network maximum flow method, calculation method based on DC power flow model and AC power flow model, and fuzzy calculation method. In this paper, the existing methods of maximum power supply capacity are compared and analyzed, and the calculation model, capacity matrix, load transfer relation matrix and so on are established. Secondly, the index system of hierarchical power supply capacity is established, which reflects the main factors that limit the power supply capacity of distribution network. The maximum power supply capacity of feeder layer, the maximum power supply capacity of transformer layer, the maximum power supply capacity of feeder and transformer, the maximum power supply capacity of feed layer and comprehensive maximum power supply ability are defined. The matching degree series index which reflects the matching degree of the power supply capacity of the adjacent layer equipment and the filling degree series index reflecting the difference between the actual load of each equipment and the load that should be supplied under the condition of the maximum power supply capacity are defined. Finally, the method of analyzing the factors limiting the maximum power supply capacity of distribution network based on the above indexes is discussed. The results show the feasibility and effectiveness of the proposed method.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM711

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