DSpace community: 電機工程學系碩士在職專班

微電網能源管理系統優化調度基於螢火蟲移動迴歸策略;Optimal Dispatch for Microgrid Energy Management System Based on Firefly Moving Regression Strategy

Thu, 19 Sep 2024 08:50:04 GMT

title: 微電網能源管理系統優化調度基於螢火蟲移動迴歸策略;Optimal Dispatch for Microgrid Energy Management System Based on Firefly Moving Regression Strategy abstract: 隨著電力需求的不斷增長和能源危機的出現，微電網的發展變得更加普遍. 再生能源在微電網中的利用更具優勢. 本研究探討了將分散式發電和太陽能光伏系統整合到微電網中.目標函數的主要目的是最大限度地減少太陽能光電等再生能源發電與微電網系統內的需求之間的功率差異累積.發電或從公用電網接收電力的能力取決於微電網的能源容量.在此背景下，螢火蟲演算法和移動回歸被用作解決討論中的最佳化問題的有效工具. 所提出的方法正在微電網領域應用，並且正在將實施演算法的結果與原始調度方法進行比較.在調度過程中，分配一定電量作為備用電源，以減輕停電影響，並提高微電網整體供電可靠性。在這項工作中，使用 MATLAB 模擬了所提出的方法在電力調度策略中的可行性。 Modbus通訊協定和演算法的實作通常使用C程式語言進行。一台支援程式的工業電腦已放置在國立中央大學的微電網一號中，以評估演算法的可行性以及調度方法在系統供電可靠性方面的最佳化結果。 ;With the growing demand for electricity and the emergence of energy crises, the development of microgrids (MGs) has become more common. Renewable energy source utilization in Microgrids is more advantageous. This study examines the integration of Distributed Generation (DG) and Solar Photovoltaic (PV) systems into a Microgrid. The primary aim of the objective function is to minimize accumulation of power differences between the generation from renewable energy sources (RES), such as solar photovoltaic, and the demand within the microgrid system. The ability to produce electricity or receive power from the utility grid (UG) is dependent upon the energy capacity of the Microgrid. In this context, the Firefly Algorithm (FA) and Moving Regression (MR) are employed as effective tools for addressing the optimization problem as discussed. The proposed methodology is being applied in the domain of Microgrid, and the outcomes of implementing the Firefly algorithm are being compared with the original dispatch methods. During the process of dispatching, a certain amount of power is allocated as backup power to mitigate the impact of power outages, hence improving the overall supply reliability of the microgrids. In this work, the viability of the proposed method in power dispatch strategy is simulated using MATLAB. The implementation of the Modbus communication protocol and algorithm is often carried out using the C programming language. A program-enabled industrial computer has been placed in Microgrid 1 at National Central University to assess the viability of the algorithm and the optimization outcome of the scheduling approach in terms of system supply reliability.

採用不定資料分布存取方案與基數2/4分裂架構實現記憶體式快速傅立葉轉換運算的晶片電路;Implementation of Memory-based FFT Using Inconstant-distribution Access Scheme and Split-radix 2/4 Architecture

Fri, 05 Jun 2020 09:39:42 GMT

title: 採用不定資料分布存取方案與基數2/4分裂架構實現記憶體式快速傅立葉轉換運算的晶片電路;Implementation of Memory-based FFT Using Inconstant-distribution Access Scheme and Split-radix 2/4 Architecture abstract: 本論文的重點是使用文獻中所發表的記憶體式快速傅立葉轉換運算架構(Memory base FFT) 之分裂基數Split-radix 2/4，結合Hong所發表的普遍化不定資料分布存取方案 [19]，整合出適用於小至16點大到4096或8192點數的快速傅立葉轉換運算電路架構，並適用於無線通訊系統中的正交分頻多工 (OFDM) 多載波調變技術。採用記憶體快速傅立葉運算架構比管線式快速傅立葉運算架構 (Pipeline base FFT)可節省電路面積、硬體成本、較高的蝴蝶運算單元硬體使用率和較低的存取功率消耗；而使用分裂基數 Split-radix 2/4 理論可減少蝴蝶運算單元 (Butterfly unit) 電路的複雜度，又可減少單一級數Pass運算時間，進而降低總運算時間；同時，記憶體存取方案 (Memory access scheme) 採用Hong所發表的普遍化不定資料分布存取方案，可固定蝴蝶運算單元架構，不需隨每一級數Pass做變動調整，僅需在蝴蝶運算單元和記憶體單位之間的資料交換存取控制電路做規律的邏輯排序。綜合採取上述分別在演算法理論、運算架構複雜度、運算單元和記憶單元的硬體面積等優點，構思出本電路並實現，先後以 C++、MATLAB、Verilog HDL語言推導各種點數的正確性，最後再以 RTL Simulation、ISE 14.4進行模擬和合成 (Synthesis)，以及使用Xilinx Virtex 5 XC5VLX330 FPGA board進行驗證。 ;The focus of this thesis is to use the split-radix 2/4 published in the memory base fast Fourier transform (FFT) operation architecture. It combines with the generalized inconstant-distribution access scheme proposed by Hong to realize a circuit for the FFT operation ranging from as small as 16 points to as large as 4096 or 8192 points. In addition, it suits for orthogonal frequency division multiplexing (OFDM) multi-carrier modulation technology in wireless communication systems. Comparing to pipeline-based FFT architecture, memory-based FFT architecture can obtain lower hardware cost, higher usage ratio of hardware in butterfly unit, and lower power consumption. While using split-radix 2/4 algorithm to reduce complexity of the butterfly unit circuit, the single-pass operation time can also be reduced, thereby reducing the total operation time. At the same time, the memory access scheme using the generalized inconstant- distribution access scheme proposed by Hong can have fixed butterfly operations. The butterfly unit structure does not have necessary to be adjusted with each Pass. It only needs to perform regular logical ordering on the data exchange access control circuit between the butterfly operation unit and the memory unit. Based on the above-mentioned advantages of the algorithm, considering complexity of computing architecture, hardware area of computing unit and memory unit, etc., this circuit is conceived and implemented, and the verification of various FFT points is derived in C ++, MATLAB, Verilog HDL, and finally uses RTL Simulation, ISE 14.4 for behavior simulation and Circuit Synthesis, and Xilinx Virtex 5 XC5VLX330 FPGA board for evaluation.

電子廠房無塵室氣流組織模擬及實踐

Fri, 31 Aug 2018 06:51:28 GMT

title: 電子廠房無塵室氣流組織模擬及實踐 abstract: 摘要在訊息高速發展的今天，大規模或超大型微電子生產區域因製程技術對無塵室控制環境提出了更高的要求。因而更有效的無塵室氣流組織型式是提高無塵潔淨度的一種有效途徑，本文主要研究與探討了利用數據模擬計算(CFD)技術，在不同的無塵室循環覆蓋率和不同回風型式的無塵室的氣流組成進行模擬，並針對模擬結果運用于實際無塵室所衍生問題進行分析改善說明。介紹了無塵室技術的運用，本文通過對目前半導體即電子廠行業最常見的無塵室廠房氣流組織類型，層流層流無塵室的空調系統主流設計形式-新風空調箱(MAU：Mack Air Unity)+風機濾網設備(FFU：Fan Filter Unity)+乾冷卻盤管(DCC：Dry Cooling Coil)組合的工作原理，討論對無塵室潔淨度的各方面的影響因素。選擇CFD技術，採用高雷諾數的Ｋ-ε渦流的數學模型和有限體積的數學離散方法，選用數值模擬軟體Fluent6.0，在不同風機濾網設備(FFU)覆蓋率下，地面華夫孔(Cheese table)回風和側邊下百葉回風兩種送回風方式的無塵室進行氣流組織的模擬評估，得到在不同FFU覆蓋率下的氣流分佈速度，進而運用至實際面板電子廠房于動態條件下所衍生問題進行分析及改善驗證說明。最後對於全文進行了總結，對垂直層流無塵室氣流組織于未來具體的工程實踐中所碰到的問題需進一步的考量和解決。 ;Abstract Today, with the rapid development of information, large scale or super large scale microelectronics production areas require higher requirements for the control environment of the dust-free room due to process technology. As a result, the more effective air flow pattern in the dust free chamber is an effective way to improve the cleanliness of the dust free. This paper mainly studies and discusses the use of data simulation calculation (CFD) technology to simulate the air flow composition of the dust free chamber with different circulation coverage rate and different return air type. The analysis and improvement of the problems derived from the dust chamber are explained. This paper introduces the application of dust free room technology. In this paper, the main design forms of air conditioning system in the dust-free room of the semiconductor factory are the mainstream design form of the air conditioning system of the vertical laminar dust free room (MAU: Mack Air Unity) + (FFU: Fan Filter Unity) + (DCC: Dry Cooling coil). The working principle of the ng Coil combination is discussed, and the factors affecting cleanliness of the dust-free room are discussed. CFD technology is selected, the mathematical model of K- e eddy with high Reynolds number and the mathematical discrete method of finite volume are used, and the numerical simulation software Fluent6.0 is selected. Under the coverage rate of different fan filter unit (FFU), the airflow organization of two kinds of dust free rooms of the ground Cheese table return air and the side air return air return air mode are carried out. In the simulation evaluation, the velocity of airflow distribution under different FFU coverage is obtained, and then it is applied to the analysis of the problems derived from the actual panel electronic building under the dynamic conditions and the improvement of the verification. Finally, the full text is summarized, and further consideration and solution are needed for the problems encountered in the future concrete engineering practice of the airflow organization in the vertical laminar free chamber.

商業部門參與需量反應潛力之分類研究

Fri, 27 Oct 2017 08:10:01 GMT

title: 商業部門參與需量反應潛力之分類研究 abstract: 開源節流一直以來是電力產業的發展主軸之一，在開發電源上，因興建發電廠及相關基礎設施日益困難，故從節流端的需求面管理越來越受重視。我國前三大電力消費部門分別為工業部門、服務業部門及住宅部門，其中工業部門的用戶絕大多數已參加需量反應，能再進一步抑低尖峰用電之空間相對較小，故本研究針對服務業中較有潛力的商業部門進行需求面管理探討，透過具有代表性的商業用戶負載特性分析，藉以評估其未來參與需量反應的潛力。 ;Using energy efficiently is one of the major subjects in power system development. Due to the increasing difficulties of building generation power plant, Demand-Side Management (DSM ) is taken more seriously. The major energy consumers in Taiwan can be classified in three groups: Industry, Service and Residence. Because Industrial consumers have been participated demand response study in the past, the effect of further suppression of peak energy consumption will be not significant. This thesis will mainly focus on Service group to estimate the potential impact on demand response study by analyzing its unique load pattern.