摘 "要: 合理的分布式儲能配置不僅可以推動可再生能源的應用,還可提高分布式電源的運行穩定性、維持系統頻率和電壓穩定、補償負荷隨機波動、降低供電成本等。在此基礎上提出了一種分布式儲能系統綜合評估體系,該體系除了考慮儲能系統的影響因素及技術性能外,還綜合儲能的經濟性、安全性和可靠性等,并結合多方專家干預選取典型技術指標及經濟指標,以導則規定、成熟的技術結論及運行經驗為指標評價判據,能夠準確應用到工程評價,得到科學的評價結果。通過對實際工程進行評估,得到儲能配置情況分析結果,驗證分布式儲能系統評估體系的有效性,同時也為系統控制策略調整、儲能配置優化方向提供指導。
關鍵詞: 分布式儲能系統; 影響因素; 綜合評估體系; 評價指標
中圖分類號: TN919?34; TM615 " " " " " " " " "文獻標識碼: A " " " " " " " " " " "文章編號: 1004?373X(2015)02?0152?06
Evaluation method of distributed energy storage system in consideration of optimization configuration influence factors
YANG Yi1, LIU Jie1, YU Jian?cheng2, ZHANG Pan2, WANG Xu?dong3, XIAO Jun4
(1. Tianjin Tianda Qiushi Electric Power High Technology Co., Ltd, Tianjin 300384, China;2. Tianjin Electric Power Corporation, Tianjin 300010, China;
3. Electric Power Research Institute, Tianjin Electric Power Corporation, Tianjin 300384, China;
4. Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China)
Abstract: Reasonable distributed energy storage configuration can not only promote renewable energy application, but also improve the running stability of the distributed power, maintain the system frequency and voltage stability, compensate the random fluctuation of load, reduce the power supply cost, etc. In consideration of these, a comprehensive evaluation system for distributed energy storage system is put forward in this paper, in which the influence factors and technical performance of energy storage system, as well as the efficiency, security and reliability of integrated energy storage are considered. In combination with many experts’ interventions to select typical technical indexes and economic indexes, and by taking guide rule stipulation, mature technology conclusion and running experience as evaluation criterion, it is able to accurately be applied to the engineering evaluation to obtain scientific evaluation results. Energy storage configuration analysis results can be obtained by evaluating the actual project to verify the validity of the distributed energy storage evaluation system. It also provided a guidance for the control strategy adjustment and energy storage configuration optimization direction.
Keywords: distributed energy storage system; influencing factor; comprehensive evaluation system; evaluation indicator
0 "引 "言
隨著電力系統的發展,分布式發電技術越來越受到人們的重視。但是分布式電源并網會產生很多問題,根本原因在于其出力具有間歇性和隨機性。因此儲能系統作為分布式發電系統必要的能量緩沖環節,其作用越來越重要。
分布式儲能是指在用電側將電能轉換成機械能、化學能等其他能量形式存儲起來,在需要時再轉換成電能釋放出來的一種裝置。在規劃分布式電源的同時引入分布式儲能環節,以實現需求側的管理,消除系統晝夜間峰谷差,平滑間歇性分布式電源并網點的功率波動[1]。……