面向海上风电高效利用的水下抽水蓄能建模与控制  

Modeling and Control of Underwater Pumped Hydro Storage for Offshore Wind Power Utilization

作　　者：王晰 苏开元 谢小荣[1] WANG Xi;SU Kaiyuan;XIE Xiaorong(State Key Laboratory of Power System Operation and Control(Department of Electrical Engineering,Tsinghua University),Haidian District,Beijing 100084,China)

机构地区：[1]新型电力系统运行与控制全国重点实验室(清华大学电机系),北京市海淀区100084

出　　处：《电网技术》2024年第10期4167-4173,I0063,共8页Power System Technology

基　　金：国家自然科学基金项目(51925701,52321004);清华大学-丰田联合研究基金专项项目(20223930081)。

摘　　要：水下抽水蓄能(underwater pumped hydro storage,UPHS)是一种适应海洋环境的新型储能方法。针对此前UPHS模型较为粗略且适用范围窄的问题,构建了水下抽蓄的水力-机械-电气多环节暂态模型并开展相关研究。首先,分析推导UPHS各组成部分(水泵水轮机、调速器、电机、变流器)的物理模型;其次,分别设计了原动机和并网变流器的控制策略;最后,在单机并网和配合海上风电联合外送两种情形的多样化工况下对UPHS进行电磁暂态仿真,验证了模型的可靠性及其应用于海上风电外送功率平抑的有效性。Underwater pumped hydro storage(UPHS)is a novel energy storage method suitable for marine environments.To address the problem of imprecise UPHS models and limited applicability,this study presents a hydraulic-mechanical-electrical multilink transient model and conducts associated research.Firstly,we analyze and establish the physical model of UPHS components,including the pump-turbine,governor,motor,and converter.Subsequently,we design the control strategies for the prime mover and grid-connected converter.Finally,this paper performs electromagnetic transient simulations for stand-alone grid-connected UPHS and offshore wind power-UPHS bundling transmission scenarios under various working conditions.Simulation results confirm the model's reliability and demonstrate that underwater pumped hydro storage is feasible for smoothing offshore wind output power.

关 键 词：水下抽水蓄能 暂态模型 全功率变频控制 水下储能 海上风电 

分 类 号：TM612[电气工程—电力系统及自动化]