本文選題：配電網(wǎng) + 最大供電能力�。� 參考：《天津大學(xué)》2014年碩士論文

【摘要】：配電系統(tǒng)最大供電能力(Total Supply Capability,TSC)的準(zhǔn)確計(jì)算具有重要的理論意義和應(yīng)用價(jià)值�，F(xiàn)有TSC計(jì)算方法沒(méi)有精確計(jì)及網(wǎng)絡(luò)損耗和電壓降落,本文將潮流方程引入TSC模型,提出了基于潮流計(jì)算的TSC模型及求解算法。首先,本文給出了準(zhǔn)確評(píng)估最大供電能力計(jì)算結(jié)果的校驗(yàn)方法,在N-1安全性校驗(yàn)中進(jìn)行潮流計(jì)算、更為嚴(yán)格。該方法分兩步:第一步基于主變和饋線N-1安全性原則校驗(yàn)最大供電能力工作點(diǎn)是否安全;第二步增加少量負(fù)荷,再進(jìn)行一次主變和饋線N-1校驗(yàn),看是否出現(xiàn)校驗(yàn)不通過(guò)。其次,建立了基于潮流TSC模型,以網(wǎng)絡(luò)供負(fù)荷(不含網(wǎng)損)最大為目標(biāo)函數(shù),計(jì)及了正常和N-1后負(fù)荷轉(zhuǎn)帶的網(wǎng)損和電壓降落,滿足主變及饋線容量約束和電壓約束。模型分為近似的單負(fù)荷點(diǎn)模型和精確的多負(fù)荷點(diǎn)模型,單負(fù)荷點(diǎn)模型將每條饋線負(fù)荷等效為一個(gè)在饋線末端的負(fù)荷點(diǎn),該模型計(jì)算更簡(jiǎn)單快速,適用于規(guī)劃網(wǎng)的TSC計(jì)算或優(yōu)化調(diào)用TSC計(jì)算;多負(fù)荷點(diǎn)模型按照網(wǎng)絡(luò)負(fù)荷點(diǎn)的實(shí)際位置進(jìn)行潮流計(jì)算,計(jì)算更加精確,適用于現(xiàn)狀網(wǎng)的TSC計(jì)算�；诔绷鞯腡SC模型屬于非線性規(guī)劃模型,求解方法具有一定難度。本文提出利用Lingo中的既約廣義梯度算法(GRG)求解非線性規(guī)劃問(wèn)題,利用前推回代算法解決潮流迭代問(wèn)題,并針對(duì)精確模型的高維和大規(guī)模性,采用稀疏矩陣的技術(shù)進(jìn)行存儲(chǔ)和建模,減小問(wèn)題復(fù)雜性。最后,利用RBTS擴(kuò)展算例和較大規(guī)模實(shí)際電網(wǎng)算例驗(yàn)證兩種模型的準(zhǔn)確性并比較了與相對(duì)不計(jì)及潮流TSC方法以及本文兩種模型之間的結(jié)果差別,比較發(fā)現(xiàn)本文方法更加精確。
[Abstract]:The accurate calculation of total Supply capability (TSC) of distribution system has important theoretical significance and application value. The current TSC calculation methods do not accurately take into account the network loss and voltage drop. In this paper, the power flow equation is introduced into the TSC model, and the TSC model based on power flow calculation and its solution algorithm are proposed. First of all, this paper presents a calibration method to accurately evaluate the calculation results of the maximum power supply capacity. The power flow calculation in the N-1 security check is more strict. The method is divided into two steps: the first step is based on the principle of main transformer and feeder N-1 security to check whether the maximum power supply working point is safe or not; the second step is to add a small amount of load and then carry out a check of the main transformer and feed line N-1 to see if the check does not pass. Secondly, based on the power flow TSC model, taking the maximum power supply load (excluding network loss) as the objective function, the network loss and voltage drop of normal and N-1 afterload transposed are taken into account to satisfy the main transformer and feeder capacity constraints and voltage constraints. The model is divided into approximate single load point model and accurate multi load point model. The single load point model equates each feeder load to a load point at the end of the feed line. The calculation of the model is simpler and faster. It is suitable for the TSC calculation of the planning network or the optimal call to the TSC calculation, and the multi-load point model can calculate the power flow according to the actual position of the network load point, so the calculation is more accurate and suitable for the TSC calculation of the current network. The TSC model based on power flow is a nonlinear programming model, and it is difficult to solve the problem. In this paper, the reduced generalized gradient algorithm (GRG) in Lingo is used to solve nonlinear programming problems, and the forward iteration algorithm is used to solve the power flow iteration problem. The sparse matrix technique is used to store and model the problem to reduce the complexity of the problem. Finally, the accuracy of the two models is verified by using RBTS extended examples and larger scale actual power network examples. The results of the two models are compared with the relative disregarding power flow TSC method and the two models in this paper. The comparison shows that the proposed method is more accurate.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM732;TM74

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 肖峻;李振生;劉世嵩;王成山;;電壓約束及網(wǎng)損對(duì)配電網(wǎng)大供電能力計(jì)算的影響[J];電力系統(tǒng)自動(dòng)化;2014年05期

2 肖峻;貢曉旭;賀琪博;蘇步蕓;王成山;;智能配電網(wǎng)N 1安全邊界拓?fù)湫再|(zhì)及邊界算法[J];中國(guó)電機(jī)工程學(xué)報(bào);2014年04期

3 肖峻;郭曉丹;王成山;祖國(guó)強(qiáng);;配電網(wǎng)最大供電能力模型解的性質(zhì)[J];電力系統(tǒng)自動(dòng)化;2013年16期

4 肖峻;張婷;張躍;王成山;;基于最大供電能力的配電網(wǎng)規(guī)劃理念與方法[J];中國(guó)電機(jī)工程學(xué)報(bào);2013年10期

5 肖峻;谷文卓;王成山;;面向智能配電系統(tǒng)的安全域模型[J];電力系統(tǒng)自動(dòng)化;2013年08期

6 肖峻;貢曉旭;王成山;;配電網(wǎng)最大供電能力與N-1安全校驗(yàn)的對(duì)比驗(yàn)證[J];電力系統(tǒng)自動(dòng)化;2012年18期

7 肖峻;谷文卓;郭曉丹;王成山;李方興;;配電系統(tǒng)供電能力模型[J];電力系統(tǒng)自動(dòng)化;2011年24期

8 劉健;司玉芳;;考慮負(fù)荷變化的配電網(wǎng)架安全評(píng)估及其應(yīng)用[J];電力系統(tǒng)自動(dòng)化;2011年23期

9 葛少云;韓俊;劉洪;郭寅昌;王成山;;計(jì)及主變過(guò)載和聯(lián)絡(luò)容量約束的配電系統(tǒng)供電能力計(jì)算方法[J];中國(guó)電機(jī)工程學(xué)報(bào);2011年25期

10 余貽鑫;欒文鵬;;智能電網(wǎng)述評(píng)[J];中國(guó)電機(jī)工程學(xué)報(bào);2009年34期

，

本文編號(hào)：1848788