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臺灣能源期刊論文全文

臺灣能源期刊第4卷第2期內容

出刊日期:June,2017

題目
虛擬電廠參與者之成本效益分析與政策推介
Title
Benefit-Cost Analysis and Policy Recommendations for the Participant of Virtual Power Plants
作者
許志義、鍾晧晨
Authors
Jyh-Yih Hsu, Hau-Chen Jhong
摘要
虛擬電廠之核心價值為整合眾多「分散」、「零星」的「虛擬尖峰容量」,發揮「聚沙成塔」 的效果,可於用電尖峰時段配合電力公司抑低需量,以達到降低電力系統尖峰發電需求及總發電成 本之目的。本研究旨在建立表燈用戶、高壓用戶與整體社會參與虛擬電廠運作之成本效益量化模 型。同時,針對研究結果做出相關的政策推介。根據本研究實證分析顯示,表燈用戶是否有意願參 與虛擬電廠之運作與彈性電價方案的容量費率折扣高低最為相關;高壓用戶若能有效地整合並利用 其擁有的分散式發電設備來參與虛擬電廠之運作,在本研究之案例模擬情境下,益本比可達1.53, 經濟效益頗為顯著。以整體社會的角度觀之,若能促使電力用戶更積極地參與彈性電價需量反應方 案和多建置再生能源發電設備來供自身用電,節省下興建尖峰電廠的發電容量避免成本,同時亦具 減碳之無形經濟效益。依據實證分析之結果,本研究有三項主要的政策推介。其一為台電公司宜適 度地調整既有的需量競價措施之基本電費折扣費率至100 (元/瓩-月)或以上,增加誘因共容,讓用戶 有動機去配合政府的節能政策。其二為政府可扶植虛擬電廠在我國發展,藉其來整合用電需量不大 的表燈用戶,讓表燈用戶有更多元的電價方案「自我選擇」機會,將節能政策以「群眾外包」的方 式來達成。其三為未來整體電力系統的政策規劃,應具「跨系統」之配套觀點,強化各再生能源之 間,以及再生能源與儲能設備、彈性電價方案間之鏈結,利用嶄新的能源管理技術,來進行供給與 需求端之系統整合。
關鍵字
虛擬電廠、虛擬尖峰容量、分散式電源、彈性電價方案、成本效益分析
Abatract
The core value of virtual power plants is that they can integrate dispersed and sporadic virtual peaking capacity to achieve the goal of lower the power demand of the electricity system during the peak time. This study aims to use a quantitative economic model to evaluate low-voltage lighting customers’, high-voltage customers’ and the whole society’s benefits and costs when they participate in virtual power plants and make related policy recommendation base on the simulated results. According to the empirical analysis of this study, it shows that whether low-voltage lighting customers are willing to participate in the operation of virtual power plants or not, the most relevant factor is the discount of the electricity pricing program; if the high-voltage customer can integrate and utilize his own distributed power generation facilities effectively to participate the operation of virtual power plants, under our simulation result, his BCR will be 1.53, showing it economic benefits are pretty good. Moreover, from the holistic viewpoint of the society, if we can encourage electric power customers to join the flexible pricing program actively and construct more renewable energy generation equipments to supply customers power useable, it will help to slow down the building of peak load power plants, save the capacity avoided cost, and help to reduce the carbon emission at the same time. According to the simulation results of our empirical analysis, we have three policy recommendations. The first is Taiwan Power Company should properly raise the current discount of basic demand charge in the Demand Bidding Program up to 100 (NTD/per kW per month) or more, to increase the incentive compatibility and make customers have motivations to coordinate with the energy conservation policy of the government. The second is the government can develop virtual power plant or similar industries like energy service company, to integrate the low-voltage lighting customers and let the low-voltage lighting customers have more opportunities of the self-selection pricing scheme, that is by implementing crowdsourcing to achieve the energy conservation policy. The last one is the planning of the electricity policy should emphasize cross-system ideas, not just enhance the connection among renewable energy itself but the connection between renewable energy, energy storage system and flexible pricing program, using the new technology of the energy management to systematically integrate both the supply side and the demand side.
Keywords
Virtual power plant, Virtual peaking capacity, Distributed generation, Flexible pricing program, Benefit-cost analysis