AI 中文总结
针对孤岛型电池储能系统经济调度中传统算法的缺陷，设计带重置机制的PI+R控制器，通过分析系统特征值、引入集中重置机制、给出驻留时间等方法，设计改进方案并经仿真验证其正确性。
AI 中文摘要
电池储能系统（BESSs）在智能电网中广泛应用，但内部阻抗功耗和电池单元容量退化导致运营成本增加。基于边际成本（MC）共识的一般经济调度（ED）算法通常是比例（P）控制器，存在收敛速度慢和控制精度低的缺陷。本文试图设计一种带重置机制的比例积分（PI）控制器（PI+R），以渐近推动MC共识和总功率失配趋于0。PI控制器的积分项在比例项过零时适时重置为0，加速收敛、提高控制精度并避免超调。分析了PI+R控制器下系统的特征值，引入集中重置机制确保孤岛型BESSs内供需平衡，给出系统在流集的驻留时间以应对芝诺行为和输入延迟，基于此将有输入延迟的系统简化为无延迟系统。考虑电池容量限制，设计了带PI+R控制器的改进MC方案，并通过相关仿真验证了所设计方案的正确性。
英文摘要
Battery energy storage systems (BESSs) are widely used in smart grids. However, power consumed by inner impedance and the capacity degradation of each battery unit become particularly severe, which has resulted in an increase in operating costs. The general economic dispatch (ED) algorithm based on marginal cost (MC) consensus is usually a proportional (P) controller, which encounters the defects of slow convergence speed and low control accuracy. In order to solve the distributed ED problem of the isolated BESS network with excellent dynamic and steady-state performance, we attempt to design a proportional integral (PI) controller with a reset mechanism (PI+R) to asymptotically promote MC consensus and total power mismatch towards 0 in this paper. To be frank, the integral term in the PI controller is reset to 0 at an appropriate time when the proportional term undergoes a zero crossing, which accelerates convergence, improves control accuracy, and avoids overshoot. The eigenvalues of the system under a PI+R controller is well analyzed, ensuring the regularity of the system and enabling the reset mechanism. To ensure supply and demand balance within the isolated BESSs, a centralized reset mechanism is introduced, so that the controller is distributed in a flow set and centralized in a jump set. To cope with Zeno behavior and input delay, a dwell time that the system resides in a flow set is given. Based on this, the system with input delays can be reduced to a time-delay free system. Considering the capacity limitation of the battery, a modified MC scheme with PI+R controller is designed. The correctness of the designed scheme is verified through relevant simulations.
