储能科学与技术 ›› 2017, Vol. 6 ›› Issue (S1): 37-.doi: 10.12028/j.issn.2095-4239.2017.0028

• 特约文章 • 上一篇    下一篇

面向并网型光伏电站功率波动平滑的储能优化配置

魏承志1，文  安1，徐光福2，朱皓斌2   

  1. 1南方电网科学研究院有限责任公司，广东 广州 510080；2南京南瑞继保电气有限公司，江苏 南京211102
  • 收稿日期:2017-03-21 修回日期:2017-04-28 出版日期:2017-10-01 发布日期:2017-10-01
  • 通讯作者: 徐光福，工程师，主要研究方向为分布式发电运行及保护控制，E-mail：xugf@nari- relays.com。
  • 作者简介:魏承志（1984—），男，硕士，工程师，主要研究方向为主要从事柔性直流输电技术、光伏电站优化运行等，E-mail：sunflower_ vera@ qq.com
  • 基金资助:
    中国南方电网有限责任公司重点科技项目（ZDKJQQ2015012）

Optimal allocation of energy storage system for smoothing output power of the grid-connected photovoltaic plant

WEI Chengzhi1, WEN An1, XU Guangfu2, ZHU Haobin2   

  1. 1Electric Power Research Institute of CSG, Guangzhou 510080, Guangdong, China; 2 NR Electric Co., Ltd., Nanjing 211102, Jiangsu, China
  • Received:2017-03-21 Revised:2017-04-28 Online:2017-10-01 Published:2017-10-01

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被引次数

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摘要： 近年来，全球气候变化和温室效应问题日益严峻，光伏、风电等可再生能源发电形式发展迅速。然而可再生能源受天气等自然因素影响较大，与大电网并网运行时，将给电网带来许多不确定性与冲击，无法满足大电网运行可靠性、稳定性的要求。文章以并网型光伏电站为研究对象，以平滑光伏电站整体出力为目的，采用离散傅里叶变换理论，对电站内储能设备进行合理配置，满足考察时间窗口平移时的波动率约束要求，减少光伏电站接入对电网产生的冲击，降低储能设备投资成本。本文采用的功率波动平抑算法并不复杂，能够迅速求解满足不同波动率约束要求的储能配置情况，为光伏电站的储能规划提供参考建议，在工程应用中具有较好的实践性。最后，通过对储能设备的算例分析，对本文提出的储能配置方法进行验证。

关键词: 并网光伏, 功率波动平滑, 傅里叶变换, 储能

Abstract:

As the utilization of fossil fuels and coal leads to climate changes and global warming, the renewable energy generation such as PV and wind power has been developing at a fast pace. However the renewable energy resources which are influenced by nature factors are mostly with randomness and intermittency. When the photovoltaic plant is connected to grid, it will be confronted with reliability problem. This paper takes grid-connected photovoltaic plant as a study subject and the output power smoothing as a target. The model allocates the energy storage system based on Discrete Fourier transform theory and the fluctuation constraint is always satisfied while translating the time window when optimization is finished. In this way the impact of traditional photovoltaic plant on the grid is reduced effectively. The method adapted in this paper is easy to satisfy different fluctuation constraints and be applied in practice. Finally the proposed method is verified on a photovoltaic plant in the case study section.

Key words: grid-connected photovoltaic plant, output power fluctuation smoothing, DFT, energy storage