Capacity Allocation of Multi-energy Complementary System Including Renewable Energy

被引：0
|
作者：
Li J. [1 ]
Liu J. [1 ]
Chen X. [1 ]
Chen Z. [1 ]
机构：
[1] School of Electrical Engineering and Information, Sichuan University, Chengdu, 610065, Sichuan Province
来源：
Dianwang Jishu/Power System Technology | 2019年 / 43卷 / 12期
关键词：
Capacity allocation; Complementarity; Economy; Mid-long term contract decomposition; Renewable energy; Virtual power;
D O I：
10.13335/j.1000-3673.pst.2019.0151
中图分类号：
学科分类号：
摘要：
Multi-energy complementary generation system including thermal power, hydropower and photovoltaics (PV) utilizes flexibility of hydropower and regulating ability of thermal power to compensate randomness of PV output, ensuring smooth and stable output curve, and promoting renewable energy accommodation. A output characteristic model of multi-energy generation system is established, taking the change rate of total output curve and the upper limit ratio of its peak to valley as the measurement of complementary indexes. Based on the output ratio of hydropower, PV and thermal power, a operating cost model of virtual power changing over time is obtained. In power market, various mid-long term electricity decomposition curves are constructed on the basis of average load, tracking load and spot price. Simultaneously, an uncertainty expression model of the spot price is established. Considering the mid-long term electricity decomposition and spot price volatility, an allocation model of multi-energy complementary system is proposed, meeting the complementary property and the maximum annual rate of return. The nonlinear optimization problem is solved with professional optimization software (LINGO), and then an allocation method of the multi-energy complementary system is proposed. Through case study, a collection of allocation scheme and the rate of return are obtained. Based on the trade-offs between economy and complementation, allocation for each planning year is obtained. © 2019, Power System Technology Press. All right reserved.
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页码：4387 / 4397
页数：10
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