摘要
随着新能源并网规模的不断增加,电网灵活性日益下降,调频问题凸显。电解槽因其功率调节响应速度快、调节范围广,是提供调频能量的优质功率型负荷。针对电解槽参与电网调频的潜力未被充分挖掘等问题,建立了适用于电力系统的电解槽精细化模型,并研究了电解槽提供快速频率响应的能力。首先,基于电解槽的电化学和热平衡原理,建立了可完整表征电解槽物质传输与能量转换过程的模型,考虑了温控系统对于电解槽温度和功率消耗的影响。接着,基于DIgSILENT仿真平台对该模型的电化学特性和动态特性进行了仿真验证。最后,以IEEE39节点标准模型对大容量电解槽参与电网调频进行了仿真验证。实验结果表明,建立的电解槽模型可准确模拟电解槽在电力系统中的运行状态,具备为电网提供快速频率响应的能力,进而能够提升电网频率稳定性与灵活性。
With the increasing scales of the interconnection of renewable energy,the flexibility of the power grid has been decreasing,and the problem of frequency modulation becomes prominent.Electrolyzers,with its fast response speed and wide range of power regulation as a high-quality power load,is able to provide energy for frequency regulation.Aimed at the issue that the potential of the electrolyzers providing frequency support has not been fully realized,in this paper,a refined model of the large-scale electrolyzers is developed and the fast frequency response of the electrolyzers is also investigated.First,based on the electrochemistry and thermology theory,the model of the electrolyzers is proposed,which can reveal the mass transfer and energy conversion process of the electrolyzers.The temperature control system and its power consumption are also considered in this model.Then,to validate the model,the electrochemistry properties and the dynamic characteristics of the model are demonstrated based on the DIgSILENT.Finally,based on the 39 Bus New England System,the frequency regulation of a power system with a large-scale electrolyzer is simulated.The results prove that the proposed model is validated to simulate the operating characteristics of the electrolyzers and has the ability to improve the frequency stability and regulation flexibility of the power system.
作者
刘承锡
曾冠维
廖敏芳
董旭柱
LIU Chengxi;ZENG Guanwei;LIAO Minfang;DONG Xuzhu(School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,Hubei Province,China;Hubei Engineering and Technology Research Center for AC/DC Intelligent Distribution Network,Wuhan 430000,Hubei Province,China)
出处
《电网技术》
EI
CSCD
北大核心
2023年第11期4638-4646,共9页
Power System Technology
基金
国家重点研发计划项目(2021YFE0191200):“基于高温电解水制氢联合生物气高效制甲烷的大型储能关键技术研究”。
关键词
电解槽
温控系统
精细化模型
频率稳定性
electrolyzers
temperature control system
refined model
frequency stability
