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研究生: 謝卓甫
Hsieh, Cho-Fu
論文名稱: 以賽局理論為基礎之分散式儲能系統排程
Scheduling of Distributed Energy Storage Systems Based on Game Theory
指導教授: 楊宏澤
Yang, Hong-Tzer
學位類別: 碩士
Master
系所名稱: 電機資訊學院 - 電機工程學系
Department of Electrical Engineering
論文出版年: 2018
畢業學年度: 106
語文別: 中文
論文頁數: 72
中文關鍵詞: 儲能系統需求端管理分散式充放電排程賽局理論
外文關鍵詞: energy storage system (ESS), demand-side management (DSM), decentralized charging and discharging scheduling, game theory
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  • 近年來,隨著分散式電力資源與資通訊技術發展,促進需求端電能管理系統之應用日漸普及。本文提出了一套應用賽局理論之分散式最佳化充放電排程策略供社區型電能管理系統(Community Energy Management System, CEMS)調度其轄區內之儲能系統。文中除在現有時間電價費率基礎上最小化用戶用電成本,亦提出促進儲能業者參與社區型用戶群代表之商轉模式,並以抑低系統尖峰負載為目標。鑒於一般CEMS僅扮演統籌管理特定區域之代理人,而未賦予直接操控轄區內各別儲能系統之能力,故不適用於傳統集中式控制架構,本文結合賽局理論設計之分散式架構,可基於各別儲能業者之最佳排程策略達成群體之最佳效益,並透過奈許平衡條件證明可驗證其理論之可行性。
    為驗證所提方法,本文採用沙崙綠能科學城開發規劃資料為模擬案例,並搭配不同時間電價方案與負載型態,以分析不同情境下之系統負載因數、儲能業者與用戶群代表之收益。此外,本文探討不同的參與者數量、儲能裝置容量及操作成本對於運轉結果之影響。模擬結果顯示所提方法除可有效提升園區之負載因數外,若配合未來儲能建置成本下降之趨勢,將可形成具有足夠誘因之商業模式,不僅可望吸引業者投資建置儲能並參與用戶群代表,亦得以舒緩電力公司之供電壓力。

    Various developments in distributed energy resources (DERs) and communication technology have boosted the popularity of demand-side energy management systems (EMS). This thesis proposes a game-theoretically optimized charging and discharging scheduling strategy for decentralized architectures. The proposed strategy can be applied in a community energy management system (CEMS) to dispatch that community’s energy storage systems (ESSs). This thesis not only considers electricity cost minimization for consumers according to the present time-of-use (TOU) tariff but also proposes a business model, which sets system peak load shedding as a common objective that incentivizes ESS owners to join a community-sized aggregator. The CEMS only acts as an agent rather than an authority with control over individual ESSs in the community most of the time. Therefore, the CEMS may not be suitable to adopt a traditional centralized control architecture. In this thesis, the game-theoretical strategy of the proposed decentralized architecture can globally optimize the scheduling strategies of the individual ESS owners. The feasibility of the theory can be demonstrated by proving the formulation of the Nash equilibrium.
    To demonstrate the effectiveness of the proposed method, this thesis uses the planning data for the Shalun Green Energy Science City development in a simulation case that analyzes the load factor of the system and the profit for the ESS owners and aggregator under scenarios with various pricing signals and load types. In addition, this thesis also analyzes the effect of the number, capacity, and operating cost of ESSs on the simulation results. The simulation results indicate that the proposed method can effectively raise the load factor of the community, and can form the basis of a business model that offers sufficient incentive to invest in ESS installation with the declining ESS cost in the future, which can encourage the participation of ESS owners in aggregation. Power supply pressure can also be mitigated for the electricity company.

    摘要 i ABSTRACT ii 誌謝 iv Table of Contents v List of Figures vii List of Tables ix Chapter 1. INTRODUCTION 1 1.1. Background and Motivation 1 1.2. Literature Review 2 1.3. Research Method and Contributions 6 1.4. Organization of the Thesis 8 Chapter 2. SYSTEM DESCRIPTION AND MODELING 9 2.1. Introduction 9 2.2. Overall System Architecture 9 2.3. TOU and Contract Capacity 11 2.4. Game Theory 12 Chapter 3. THE PROPOSED DECENTRALIZED SCHEDULING STRATEGY 15 3.1. Introduction 15 3.2. Proposed Profit-Sharing Mechanism 15 3.3. Structure of the Proposed Method 16 3.4. Centralized Optimization Approach 21 3.4.1. Objective Function 21 3.4.2. Constraints 23 3.5. Decentralized Optimization Approach 24 3.6. Noncooperative Game Theory 26 3.6.1. Noncooperative Game Theory Model 26 3.6.2. Existence and Uniqueness of Nash Equilibrium 28 3.6.3. Nash Equilibrium and Pareto-Optimal Solution 28 3.7. Differential Evolution Solution Method 29 Chapter 4. SIMULATION RESULTS 34 4.1. Introduction 34 4.2. Simulation System and Related Parameters 34 4.2.1. Electricity Pricing Model 34 4.2.2. General System Parameters 36 4.3. Scenarios of ESS with Same Conditions 38 4.3.1. Analysis of Various Load Types and Pricing Models 39 4.3.2. Analysis for Different ESS Numbers 46 4.4. Simulating ESSs in Various Conditions 51 4.4.1. ESSs with Various Capacities 51 4.4.2. ESSs with Various Operating Costs 54 4.5. Test Cases of SGESC’s System 56 4.5.1. Test System Description 56 4.5.2. Profit Analysis for ESS Investment 59 Chapter 5. CONCLUSION AND FUTURE PROSPECTS 65 5.1. Conclusion 65 5.2. Future Prospects 66 REFERENCES 68

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