本文選題：配電信息物理系統(tǒng) + 電壓控制��； 參考：《華北電力大學(xué)(北京)》2017年碩士論文

【摘要】：高滲透率分布式電源(Distributed Generation,DG)接入對電網(wǎng)的運(yùn)行、保護(hù)及可靠性等方面造成了廣泛影響,在一定程度上惡化了電網(wǎng)的電能質(zhì)量和運(yùn)行經(jīng)濟(jì)性。因此,電網(wǎng)采取一系列主動控制手段以避免電網(wǎng)運(yùn)行狀態(tài)劣化并進(jìn)一步提升電網(wǎng)性能。而這些控制手段必定會加深電力系統(tǒng)對通信、信息與電子技術(shù)的依賴程度,這種依賴體現(xiàn)在信息系統(tǒng)的配置和性能嚴(yán)重影響了物理系統(tǒng)的運(yùn)行和性能。由此可知,電力系統(tǒng)研究與信息系統(tǒng)研究在理論和方法上無法割裂,實(shí)現(xiàn)智能電網(wǎng)的關(guān)鍵之一就在于緊密而有機(jī)地將前沿的計算、通信、傳感技術(shù)與電力系統(tǒng)融合起來。而信息物理系統(tǒng)(Cyber-Physical Systems,CPS)的目標(biāo)正是將物理系統(tǒng)和信息系統(tǒng)融合為新型工業(yè)系統(tǒng),其目的是深度加深物理與信息系統(tǒng)的交互與融合,從而提高整體系統(tǒng)的運(yùn)行性能,該融合系統(tǒng)的多維不確定性、深度耦合性使其規(guī)劃問題更為復(fù)雜。因此,本文基于配電信息物理系統(tǒng)(Cyber-Physical Distribution System,CPDS)在規(guī)劃中的耦合特性分析,提出計及不確定性影響的CPDS規(guī)劃新方法,建立計及電壓控制功能及通信系統(tǒng)隨機(jī)故障的CPDS規(guī)劃模型。本文主要工作如下:首先,介紹CPDS的基本概念。提出了CPDS的典型多層結(jié)構(gòu)與特征,并介紹各層結(jié)構(gòu)的物理組成與功能特點(diǎn);基于CPDS的多層結(jié)構(gòu)深入分析該雙層融合系統(tǒng)的滲透作用,進(jìn)行了CPDS在規(guī)劃中的耦合特性分析。然后,提出CPDS規(guī)劃框架。針對運(yùn)行控制、規(guī)劃目標(biāo)、約束條件等項目對比分析了CPDS規(guī)劃和傳統(tǒng)配電網(wǎng)規(guī)劃的差異性;基于CPDS耦合特性分析,提出了考慮信息系統(tǒng)隨機(jī)失效和控制失效的CPDS規(guī)劃框架、規(guī)劃流程和數(shù)學(xué)模型。其次,提出計及電壓控制的CPDS規(guī)劃的實(shí)用化案例。針對大量DG并網(wǎng)后帶來的電壓問題提出CPDS調(diào)壓策略;在此基礎(chǔ)上,建立考慮電壓控制的CPDS規(guī)劃模型,提出以配電公司配電成本最小且可再生能源能量滲透率最大為目標(biāo)函數(shù),考慮潮流方程約束、電壓約束、和不確定性電能質(zhì)量的概率約束等約束條件;通過優(yōu)化方案形成和方案概率校核相結(jié)合的融合過程對該CPDS規(guī)劃模型進(jìn)行求解。最后,進(jìn)行算例仿真分析。以分布式光伏并網(wǎng)且具備電壓控制功能的改進(jìn)IEEE-33節(jié)點(diǎn)配電系統(tǒng)為例進(jìn)行仿真驗證,結(jié)果驗證了所提模型和算法的有效性和實(shí)用性,并探討了控制參數(shù)、光伏滲透率對配置方案和信息系統(tǒng)隨機(jī)故障對電壓合格概率指標(biāo)的影響,為配電信息物理系統(tǒng)的規(guī)劃和改進(jìn)措施提出了建議。
[Abstract]:High permeability distributed Generation (DG) access has a wide impact on the operation, protection and reliability of the power network, and to a certain extent has deteriorated the power quality and operation economy of the power network. Therefore, a series of active control measures are adopted to avoid the deterioration of power grid operation and further improve the performance of power grid. These control measures will definitely deepen the power system's dependence on communication, information and electronic technology, which is reflected in the configuration and performance of the information system, which seriously affects the operation and performance of the physical system. It can be seen that power system research and information system research can not be separated in theory and method. One of the keys to realize smart grid lies in the close and organic integration of advanced computing, communication, sensing technology and power system. The goal of Cyber-Physical Systems (CPS) is to integrate physical systems and information systems into a new industrial system, with the aim of deepening the interaction and integration of physics and information systems in order to improve the performance of the whole system. The multi-dimensional uncertainty and deep coupling of the fusion system make the planning problem more complicated. Therefore, based on the analysis of coupling characteristics of distribution information physical system (CPDS) in planning, a new CPDS planning method considering the influence of uncertainty is proposed, and a CPDS programming model considering voltage control function and random faults of communication system is established. The main work of this paper is as follows: firstly, the basic concept of CPDS is introduced. The typical multi-layer structure and characteristics of CPDS are put forward, and the physical composition and functional characteristics of each layer structure are introduced, and the penetration function of the two-layer fusion system is analyzed deeply based on the multi-layer structure of CPDS, and the coupling characteristics of CPDS in the planning are analyzed. Then, the CPDS planning framework is proposed. The differences between CPDS planning and traditional distribution network planning are compared and analyzed in terms of operation control, planning objectives and constraints, and a CPDS planning framework considering random failure and control failure of information systems is proposed based on the analysis of CPDS coupling characteristics. Planning process and mathematical models. Secondly, a practical case of CPDS programming considering voltage control is presented. A CPDS voltage regulation strategy is proposed to solve the voltage problems caused by DG, and a CPDS programming model considering voltage control is established. The objective function is the minimum distribution cost and the maximum energy permeability of renewable energy in distribution companies. Considering the constraints of power flow equation, voltage constraints, and probabilistic constraints of uncertain power quality, the CPDS programming model is solved through the fusion process of optimization scheme formation and scheme probability checking. At last, an example is given. Taking the improved IEEE-33 node distribution system with voltage control function as an example, the simulation results show that the proposed model and algorithm are effective and practical, and the control parameters are discussed. The influence of photovoltaic permeability on the configuration scheme and random fault of information system on the probability index of voltage eligibility is proposed, which provides suggestions for the planning and improvement of distribution information physical system.
【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM715

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相關(guān)期刊論文 前10條

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本文編號：2032871