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计及风电不确定性和弃风率约束的风电场储能容量配置方法
Configuration Method of Energy Storage for Wind Farms Considering Wind Power Uncertainty and Wind Curtailment Constraint
- 电力系统自动化-方正平台 2020年44卷第16期 页码：45-52
- 作者机构：
1.国网青海省电力公司电力科学研究院，青海省西宁市 810000
2.清华大学电机工程与应用电子技术系，北京市 100084
3.电力系统及发电设备控制和仿真国家重点实验室，清华大学，北京市 100084
- 作者简介：
杨立滨（1985—），男，高级工程师，主要研究方向：新能源电力系统运行与分析。E-mail：18797160393@163.com
曹阳（1996—），男，博士研究生，主要研究方向：新能源接入的综合能源系统运行分析。E-mail：caoy13@163.com
魏韡（1985—），男，博士，副教授，主要研究方向：运筹学与能源经济。E-mail：wei-wei04@mails.tsinghua.edu.cn
梅生伟（1964—），男，通信作者，博士，教授，主要研究方向：大电网安全与控制、博弈论在电力系统的应用。E-mail：meishengwei@tsinghua.edu.cn
- 基金信息：国家电网公司科技项目(522800180003);青海省科技计划重大科技专项(2018-GX-A6);国家自然科学基金资助项目(51807101)
DOI：10.7500/AEPS20200224004
中图分类号：收稿日期：2020-02-24，
修回日期：2020-05-06，
网络出版日期：2020-07-01，
纸质出版日期：2020-08-25
- 稿件说明：
移动端阅览
杨立滨,曹阳,魏韡等.计及风电不确定性和弃风率约束的风电场储能容量配置方法[J].电力系统自动化,2020,44(16):45-52.
YANG Libin,CAO Yang,WEI Wei,et al.Configuration Method of Energy Storage for Wind Farms Considering Wind Power Uncertainty and Wind Curtailment Constraint[J].Automation of Electric Power Systems,2020,44(16):45-52.
杨立滨,曹阳,魏韡等.计及风电不确定性和弃风率约束的风电场储能容量配置方法[J].电力系统自动化,2020,44(16):45-52. DOI： 10.7500/AEPS20200224004.
YANG Libin,CAO Yang,WEI Wei,et al.Configuration Method of Energy Storage for Wind Farms Considering Wind Power Uncertainty and Wind Curtailment Constraint[J].Automation of Electric Power Systems,2020,44(16):45-52. DOI： 10.7500/AEPS20200224004.
摘要
风电的大规模开发造成了严重的弃风问题，在风电场内配置储能装置可显著减少弃风，文中基于分布鲁棒优化方法研究了考虑风电不确定性和弃风率约束的风电场储能容量配置问题。首先根据历史数据构造风电出力的经验分布函数，为考虑风电出力的不确定性，以Kullback-Leibler（KL）散度作为分布函数距离测度建立了风电出力的概率分布函数集合。随后，将弃风率要求建模为概率分布函数集合中最坏分布下的鲁棒机会约束，进一步建立了以储能投资成本最小为目标、以弃风率为约束的鲁棒机会约束规划模型。最后，通过矫正机会约束中的风险阈值，将鲁棒机会约束转化为传统机会约束，并采用凸近似和抽样平均构建线性规划进行高效求解。基于IEEE 30节点电网进行了算例分析，并与传统的随机规划和鲁棒优化模型进行对比，验证了所提模型在处理风电不确定性时能有效兼顾保守性和鲁棒性。
Abstract
The large-scale integration of wind power has caused serious curtailment problems and the configuration of energy storage in wind farms can significantly reduce the curtailment. Considering the uncertainty and curtailment rate constraint of wind power
this paper focuses on the energy storage configuration in wind farms based on distributionally robust optimization method. Firstly
an empirical distribution function for wind power is estimated based on historical data. Considering the wind power uncertainties
a set of probability distribution functions for wind power output is established
which takes the Kullback-Leibler (KL) divergence as distance measurement of distribution function. Secondly
the requirement of wind power curtailment rate is modelled as a robust chance constraint with respect to the worst distribution in the probability distribution function set. And a distributionally robust optimization model is proposed with the objective of minimizing the investment cost of energy storage and curtailment rate constraints. Finally
the robust chance constraint is transformed to a traditional one by correcting risk thresholds in chance constraint. Through convex approximation and sampling average
a linear program is constructed for highly efficient solution. A case study of the proposed model is conducted on IEEE 30-bus system
and the results are compared with the traditional stochastic programming and robust optimization models
which demonstrate the advantage of the proposed model in dealing with wind power uncertainties by balancing the conservatism and robustness effectively.
关键词
Keywords
references
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