王成明 郑坤 熊曼妮

摘 要：【目的】在输水工程中，风电、光伏等新能源具有不稳定性，若直接接入电网会对可靠运行的电能质量造成严重的影响。为了抑制输水工程中的风光功率波动问题，有必要对此进行研究。【方法】提出了一种基于模糊控制的混合储能控制策略，分别利用能量型储能和功率型储能平移不同时间尺度的功率脉动。【结果】考虑将风光功率波动变化态势、储能荷电状态作为模糊控制器的输入，调节功率型储能与能量型储能为系统出力，并考虑储能电池的一致性，有效地保障储能电池的循环使用寿命。【结论】通过算例验证了混合储能控制策略抑制风光功率波动的有效性，充分发挥混合电池储能系统优势，减少能量型储能使用频次，实现价值最大化。

关键词：风光联合发电；混合储能；模糊控制；平滑输出

中图分类号：TU831.2    文献标志码：A     文章编号：1003-5168（2024）08-0014-04

DOI：10.19968/j.cnki.hnkj.1003-5168.2024.08.003

Research on Hybrid Energy Storage Control Strategy for Suppressing Wind and Solar Power Fluctuations in Water Transmission Projects

WANG Chengming ZHENG Kun XIONG Manni

（Changjiang Institute of Survey， Planning， Design and Research， Wuhan 430010， China）

Abstract： [Purposes] In water transmission projects， new energy sources such as wind power and photovoltaics pose significant challenges and potential risks to the reliable operation of power quality due to their instability when directly connected to the power grid. In order to suppress the fluctuation of wind and solar power in water transmission projects， it is necessary to conduct research on this issue. [Methods] A hybrid energy storage control strategy based on fuzzy control is proposed.This strategy utilizes both energy-based and power-based energy storage to mitigate power fluctuations across different time scales. [Findings] By considering the trends in wind and solar power fluctuations along with the state of charge of the energy storage， they serve as inputs to the fuzzy controller， regulating the outputs of power-based and energy-based energy storage systems. Furthermore， it extensively considers the consistency of energy storage batteries， effectively ensuring the cyclic lifespan of these batteries. [Conclusions] Validation through case studies demonstrates the efficacy of the hybrid energy storage control strategy in mitigating wind and solar power fluctuations， optimizing the advantages of hybrid battery energy storage systems， reducing the frequency of energy-based storage usage， and maximizing overall value.

Keywords： wind-solar hybrid generation; hybrid energy storage; fuzzy control; smoothed output

0 引言

长距离配水工程中的闸控站、阀控站等供电点，具有供电距离长、数量多、分布零散、持续负载能力小、瞬间负载大的特点［1-2］。采用传统的输电线路供电方案，往往存在可靠性、经济性较低的问题，因此寻找一种可靠、经济且可持续的供电方案至关重要。

风电、光伏等新能源因其具有不稳定性，如果直接接入电网可能会对可靠运行电能质量造成严重影响并存有潜在的风险。储能装置作为新一代电网中最关键的组成部分，它具有能量双向流动、柔性安装和快速响应等特点［3-4］。通过将大容量的储能装置布置在远距离的并网点上，可以在短时大负载和持续小负载之间达到均衡，能够很好地改善上述问题。……