基于电流源和电压源的储能系统双模式控制策略研究  

Research on Dual Mode Control Strategy of Energy Storage System Based on Current Source and Voltage Source

作　　者：闫泊[1] 刘亚涛 Yan Bo;Liu Ya-tao(School of Electrical Engineering,Xi'an Railway Vocational&Technical Institute,Xi'an 710026,Shaanxi Province,China;Xi'an JD Energy Corporation,Xi'an 710000,Shaanxi Province,China)

机构地区：[1]西安铁路职业技术学院电气工程学院,陕西西安710026 [2]西安奇点能源股份有限公司,陕西西安710000

出　　处：《科学与信息化》2024年第19期31-33,共3页Technology and Information

摘　　要：本文针对储能系统在电网辅助服务(调频)、差价套利、新能源发电功率管理等不同应用场景下的适应性问题,提出了一种基于电流源和电压源的双模式切换策略。该策略采用基于PI的电压和相位预同步补偿及虚拟阻抗软限流策略解决并网时可能造成的系统过流冲击。此外,通过对电压控制积分器进行复位和数据切换,实现了模式间的无缝切换;通过在Simulink仿真软件中搭建储能微网模型,对其在并网运行、离网运行、离并网转换、多机并联等典型工况进行了仿真验证。验证表明,该控制策略能够满足并离网要求,而且在多机并联时具备黑启动能力,启动完成后将自动转入并网运行。A dual mode switching strategy is proposed based on current source and voltage source to address the adaptability of energy storage systems in different application scenarios such as power grid auxiliary services(frequency modulation),price difference arbitrage,and new energy generation power management.This strategy adopts voltage and phase presynchronization compensation based on PI and virtual impedance soft current limiting strategy to solve the overcurrent impact during grid connection.In addition,seamless switching between modes is achieved by resetting and data exchanging on the voltage control integrator.By building an energy storage microgrid model in Simulink,simulation verification is conducted on typical operating conditions such as parallel operation,off-grid operation,parallel-off-grid conversion,and multi-machine parallel connection.The verification results show that this control strategy can meet the requirements of parallel and offgrid operation,and has the ability of black start during multi-machine parallel connection.After the start is completed,it will automatically switch to parallel operation.

关 键 词：电压源模式 电流源模式 虚拟阻抗 下垂控制 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]