基于共识的DC微电网的二次控制,通过网络预测控制战略通过通信延迟进行了基于共识的二次控制
Xiaoran Dai1, Guo-Ping Liu2, Wenshan Hu1
1School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China.
ISA transactions
|February 29, 2024
概括
本研究引入了一个网络预测控制 (NPC) 策略,以积极管理岛屿直流微电网的时间延迟. 该方法增强了电压调节和电流共享,提高了系统的稳定性和性能.
科学领域:
- 电气工程 电气工程
- 控制系统 控制系统
- 可再生能源系统可再生能源系统
背景情况:
- 网络物理微电网通常使用基于共识的二次控制来调节电压和电流.
- 微电网中的稀疏通信网络带来了不可避免的时间延迟,挑战了控制系统的性能.
- 现有的方法往往被动地容忍时间延迟,限制了系统的响应能力和稳定性.
研究的目的:
- 为岛屿直流微电网提出一个新的网络预测控制 (NPC) 战略.
- 积极补偿通信时间延迟,而不是被动容忍它们.
- 为了确保稳定的电压调节和比例的电流分配在存在时间延迟.
主要方法:
- 开发了基于网络物理微电网模型的电压和电流的预测模型.
- 实施了NPC战略,以估计实时系统状态并积极抵消延迟效应.
- 对闭环系统使用Schur稳定性标准分析了系统稳定性.
主要成果:
- 拟议的NPC战略有效地弥补了岛屿直流微电网的通信时间延迟.
- 在48V直流微电网上的实验验证证明了该方法的可行性,延迟耐受性和稳定性.
- 同时实现电压调节和比例电流共享得到证实.
结论:
- 网络预测控制策略为管理微电网控制中的时间延迟提供了一种优越的方法.
- 该方法提高了在通信限制下岛屿直流微电网的可靠性和性能.
- NPC为先进的微电网二次控制提供了强大而有效的解决方案.
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