本文選題：最大供電能力 + 負荷消納��； 參考：《天津大學(xué)》2014年碩士論文

【摘要】：傳統(tǒng)規(guī)劃方法根據(jù)負荷增長首先考慮變電站新建增容再規(guī)劃線路網(wǎng)絡(luò),非常適用負荷快速增長的情況。目前我國很多城市負荷增長逐步放緩,需要發(fā)展新的規(guī)劃方法。在此背景下,本文提出負荷消納的規(guī)劃新理念。該方法優(yōu)先挖掘已有網(wǎng)絡(luò)供電潛力消納新增負荷,把新建擴建變電站和線路放到其次。最大供電能力(TSC)理論在挖掘配電網(wǎng)供電潛力方面有很強的優(yōu)勢,本文提出了一種基于TSC的配電網(wǎng)負荷消納規(guī)劃方法。首先,提出了基于TSC的負荷消納。通過TSC理論與傳統(tǒng)配電網(wǎng)基于容載比規(guī)劃方法的對比,提出TSC理論更能挖掘已有配電網(wǎng)的供電潛力。在按照經(jīng)濟成本歸納了配電網(wǎng)常見3大類10種規(guī)劃措施后,本文提出了基于TSC的負荷消納流程:1)收集原始數(shù)據(jù);2)分析供電盲區(qū);3)計算TSC;4)TSC總量校驗與調(diào)整;5)TSC分布校驗與調(diào)整;6)N-1驗證。該方法能夠從整個配電網(wǎng)角度分析評估,為更精細地負荷消納提供了指導(dǎo)方向。然后,對于基于TSC負荷消納中的關(guān)鍵問題—TSC分布校驗與調(diào)整,本文首先提出了負荷的初步消納—饋線分配模型。該模型在實現(xiàn)均衡地消納網(wǎng)絡(luò)中所有負荷時,考慮了饋線、主變的N-1安全性和負荷分配平衡。該模型在改進的IEEE-bus4配電網(wǎng)和中國某城市實際配電網(wǎng)兩個算例中得到了驗證,負荷初步消納的結(jié)果包括新增負荷接入到相應(yīng)饋線進行供電和饋線之間的負荷轉(zhuǎn)移。其中,饋線間負荷轉(zhuǎn)移由于網(wǎng)絡(luò)中分段或聯(lián)絡(luò)開關(guān)的限制,尚不能在實際操作中實現(xiàn)。最后,為解決饋線間負荷轉(zhuǎn)移的問題,本文提出了負荷的精確消納—開關(guān)重構(gòu)再分配模型。該模型以饋線間負荷轉(zhuǎn)移結(jié)果為指導(dǎo),確定了可能需要調(diào)整開閉狀態(tài)的開關(guān)集合,以N-1安全原則作為約束,以開關(guān)狀態(tài)作為決策變量,通過遺傳算法進行了網(wǎng)絡(luò)重構(gòu)。該模型對改進的IEEE-bus4配電網(wǎng)和中國某城市實際配電網(wǎng)進行了重構(gòu),重構(gòu)結(jié)果實現(xiàn)了負荷在饋線間的負荷轉(zhuǎn)移,從而形成了完整的、實際可操作的基于最大供電能力的配電網(wǎng)負荷消納方法。
[Abstract]:According to the load growth, the traditional planning method firstly considers the new line network of substation capacity increase and replanning, which is very suitable for the situation of rapid load growth. At present, the load growth of many cities in China is slowing down gradually, and new planning methods need to be developed. In this context, this paper puts forward a new concept of load absorption planning. This method preferentially excavates the existing network power supply potential to absorb the new load, and puts the new expansion substation and the line to the next place. The theory of maximum power supply capacity (TSC) has a strong advantage in excavating the power supply potential of distribution network. In this paper, a method of load absorption planning based on TSC is proposed. Firstly, the load absorption based on TSC is proposed. By comparing the TSC theory with the traditional distribution network based on load ratio planning method, it is proposed that the TSC theory can better tap the power supply potential of the existing distribution network. After summarizing 10 kinds of planning measures common to 3 categories of distribution network according to the economic cost, This paper presents a load absorption process based on TSC: 1) collecting raw data (2) analyzing the blind area of power supply. (3) calculating TSC4 TSC total quantity check and adjustment 5 TSC distribution check and adjustment 6 / N ~ (-1) verification. This method can be used to analyze and evaluate the whole distribution network and provide guidance for more precise load absorption. Then, to check and adjust the distribution of TSC based on the key problem of TSC load absorption, this paper first proposes a preliminary load rejection feeder distribution model. In order to achieve balanced absorption of all loads in the network, the feeders, the N-1 security of the main transformer and the load distribution balance are considered in the model. The model is verified by two examples of the improved IEEE-bus4 distribution network and the actual distribution network in a certain city in China. The results of the initial load absorption include the addition of the load to the corresponding feeder and the load transfer between the feeders. Among them, load transfer between feeders can not be realized in actual operation because of the limitation of segment or contact switch in the network. Finally, in order to solve the problem of load transfer between feeders, this paper presents an accurate load rescheduling model. Based on the results of load transfer between feeders, this model determines the set of switches that may need to adjust the opening and closing states, takes the security principle of N-1 as the constraint and the switching state as the decision variable, and reconstructs the network by genetic algorithm. The model reconstructs the improved IEEE-bus4 distribution network and the actual distribution network in a certain city in China. The result of the reconfiguration realizes the load transfer between the feeder lines, thus forming a complete one. A practical and operable method for load absorption of distribution network based on maximum power supply capacity.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM715

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本文編號：1821305