A short-term joint operation method of small and large hydropower plants under small hydropower uncertainty

被引：0
|
作者：
Wu H. [1 ]
Cheng C. [1 ]
Wu X. [1 ]
Li X. [2 ]
Cai H. [2 ]
机构：
[1] Institute of Hydropower & Hydroinformatics, Dalian University of Technology, Dalian, 116024, Liaoning Province
[2] Yunnan Electric Power Dispatching Center, Kunming, 650011, Yunnan Province
来源：
| 2016年 / Chinese Society for Electrical Engineering卷 / 36期
基金：
中国国家自然科学基金;
关键词：
Large hydropower; Optimal operation; Peak shaving; Scenario analysis; Small hydropower;
D O I：
10.13334/j.0258-8013.pcsee.151500
中图分类号：
学科分类号：
摘要：
It is difficult to make dispatch decisions of power systems when large-scale small hydropower (SHP) connected to the power grid because of randomness and unpredictability characters of SHP. Regarding the uncertainty characters of large-scale SHP, this paper used a scenario analysis method, which is a method of stochastic programming theory, to construct power scenario set for description power characteristics of SHP. And fuzzy clustering and clustering comprehensive quality algorithm were proposed for reduction scenarios while establishment the conditional probability distribution of forecast and actual power under the current prediction accuracy. SHP uncertainty problem was transformed into a deterministic finite condition scenarios problem. An expectancy model for peak shaving operation was established of SHP and large hydropower (LHP) system. The similarity was analyzed between the current forecast power and prediction scenarios in order to discriminate prediction scene category and obtain possible actual scenarios in the future. Then a successive search algorithm was proposed to solve the model. The proposed method was applied to the dispatching center of Yunnan Electric Power Dispatching Center for generation scheduling between small and large hydropower plants. Based on the practical data simulation, the results show that the proposed method is useful for improving expect peak shaving effect and reliability of hydropower schemes. © 2016 Chin. Soc. for Elec. Eng.
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收藏
页码：5879 / 5889
页数：10
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