本文選題：配電網(wǎng) + 分布式光伏�。� 參考：《西安科技大學(xué)》2017年碩士論文

【摘要】：光伏分布式接入配電網(wǎng)無論是通過主動配電網(wǎng)技術(shù)或是微電網(wǎng)技術(shù),準入容量都是配電網(wǎng)側(cè)必須考慮的問題。《太陽能發(fā)展“十三五”規(guī)劃》提出單個村級電站不超過300kW。但我國幅員遼闊,區(qū)域差異大,如何配制分布式光伏準入容量,以保證充分利用太陽能資源和配電網(wǎng)資源顯得尤為重要。本文采用最優(yōu)化的方法計算分布式光伏準入容量,并從電網(wǎng)運行角度對現(xiàn)有的約束條件進行了歸類。提出一種基于矩陣描述的準入容量計算方案。該方案以電壓降落為約束、以配電網(wǎng)分布式光伏準入容量之和最大為目標函數(shù)、以遺傳算法為計算工具。提出了用點間矩陣來描述節(jié)點之間的關(guān)系,并通過點間矩陣得出矩陣形式的電壓降落約束。從靈敏度的角度分析出在電阻不可忽略的低壓配電網(wǎng)中,有功功率的變化對電壓降落的變化起主要作用,進而在電壓降落計算時略去了無功功率。使用電壓降落約束替換潮流約束,避免了潮流迭代計算,并推導(dǎo)了電壓降落約束與潮流約束之間的等價性。針對分布式光伏的無區(qū)域分布約束、按距離均勻分布、按節(jié)點均勻分布三種情景,將準入容量計算方案應(yīng)用于典型配電網(wǎng),得到各個節(jié)點的分布式光伏準入容量值,并對計算結(jié)果進行仿真驗證。仿真中,在加入計算值大小的分布式光伏后,各節(jié)點電壓滿足電壓降落約束,這證明了準入容量計算方案的可行性�；谟嬎憬Y(jié)果分析出對分布式光伏準入容量限定的一般性原則。并利用潮流的力矩法對總結(jié)出的分布式光伏準入容量限定的一般性原則進行了證明。
[Abstract]:Whether through active distribution network technology or microgrid technology, the access capacity of photovoltaic distributed distribution network must be considered by the distribution network side. In the 13th Five-Year Plan of Solar Energy Development, it is proposed that the single village level power station should not exceed 300kW. However, China has a vast territory and large regional differences, so it is particularly important to prepare distributed photovoltaic access capacity to ensure the full use of solar energy resources and distribution network resources. In this paper, the optimal method is used to calculate the access capacity of distributed photovoltaic system, and the existing constraints are classified from the point of view of grid operation. In this paper, a method of calculating access capacity based on matrix description is proposed. This scheme takes the voltage drop as the constraint, takes the maximum of the distributed photovoltaic access capacity as the objective function, and takes the genetic algorithm as the calculation tool. The relationship between nodes is described by the matrix between points, and the voltage drop constraints in the form of the matrix are obtained by the matrix between the points. From the point of view of sensitivity, it is analyzed that the change of active power plays a major role in the variation of voltage drop in the low-voltage distribution network where resistance cannot be ignored, and then the reactive power is omitted in the calculation of voltage drop. Instead of power flow constraints, voltage drop constraints are used to avoid power flow iterative calculation, and the equivalence between voltage drop constraints and power flow constraints is derived. Aiming at three scenarios of distributed photovoltaic (DPV), which are distributed evenly according to distance and nodes, the access capacity calculation scheme is applied to typical distribution network, and the value of distributed photovoltaic admission capacity of each node is obtained. The results are verified by simulation. In the simulation, the voltage of each node satisfies the voltage drop constraint after adding the distributed photovoltaic with the calculated value, which proves the feasibility of the scheme to calculate the admission capacity. Based on the calculation results, the general principle of limiting the access capacity of distributed photovoltaic is analyzed. The general principle of limiting the access capacity of distributed photovoltaic is proved by the torque method of power flow.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM615

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本文編號：2011271