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首页> 外文期刊>IEEE transactions on industrial informatics >Nonlinear Sliding Mode and Distributed Control of Battery Energy Storage and Photovoltaic Systems in AC Microgrids With Communication Delays
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Nonlinear Sliding Mode and Distributed Control of Battery Energy Storage and Photovoltaic Systems in AC Microgrids With Communication Delays

机译：具有通信延迟的交流微电网中电池储能和光伏系统的非线性滑模和分布式控制

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摘要

This paper proposes a distributed fixed-time multiagent control strategy for the frequency restoration, voltage regulation, state of charge balancing, and proportional reactive power sharing between photovoltaic battery systems distributed in a microgrid with communication time delays. First, the feedback linearization method is applied to find the direct relationships between explicit states and control inputs. Then, based on the model, the distributed fixed-time cooperative control system restores the frequency, regulates the average voltage to the nominal value, and achieves accurate power sharing. For the state of charge balancing, a fixed-time observer is proposed to estimate the average state of charge of a battery using only information from neighbors. Based on the estimated value, a local fixed-time sliding mode control is applied to achieve the balanced state of charge. Due to robustness of the fixed-time control strategy, the balanced state of charge can be maintained despite intermittent photovoltaic generation and variable loads. The Artstein's transformation is applied to ensure the stability of the time delayed system. The dynamic performance is verified with an RTDS Technologies real-time digital simulator, using switching converter models, nonlinear lead-acid battery models, photovoltaic generation, and communication delays in a European benchmark microgrid.
机译：本文提出了一种分布式固定时间多主体控制策略，该策略用于在具有通信时延的微电网中分布的光伏电池系统之间进行频率恢复，电压调节，电荷平衡状态和比例无功功率共享。首先，使用反馈线性化方法来找到显式状态与控制输入之间的直接关系。然后，基于该模型，分布式固定时间协同控制系统恢复频率，将平均电压调节到标称值，并实现精确的功率共享。对于电荷平衡状态，建议使用固定时间的观察器仅使用来自邻居的信息来估计电池的平均电荷状态。基于估计值，应用本地固定时间滑模控制以实现充电的平衡状态。由于定时控制策略的鲁棒性，即使间歇性产生光伏和可变负载，也可以保持平衡的电荷状态。应用Artstein变换可确保延时系统的稳定性。动态性能已通过RTDS Technologies实时数字仿真器进行了验证，该仿真器使用了欧洲基准微电网中的开关转换器模型，非线性铅酸电池模型，光伏发电和通信延迟。

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