恒功率/脉冲功率负荷诱发车载式直流微网失稳机理及其抑制策略

项目名称： 恒功率/脉冲功率负荷诱发车载式直流微网失稳机理及其抑制策略

项目编号： No.51507190

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 电工技术

项目作者： 徐海亮

作者单位： 中国石油大学（华东）

项目金额： 22万元

中文摘要： 近年来微电网技术的持续快速发展带动了车辆、舰船和航空器电力系统升级改造的步伐。但由于推进电机、电磁轨道炮等大量恒功率、强脉冲用电负荷的接入，该类车载式（或舰载式、机载式）微网系统的稳定性问题比传统微电网更为突出。在此背景下，本项目系统研究恒功率负荷、脉冲功率负荷同时接入直流微网后系统的稳定边界与控制策略问题。通过系统评估两类典型负荷对直流微网稳定性的影响机理及其内在联系，深入研究系统关键参量对微网稳定性的影响规律，并提出一种基于稳定裕度优化的分布式电源、储能系统容量的匹配方法。同时，为贴近未来作战装备体积小、重量轻的实战化应用需求，项目重点研究弱惯性微网环境下系统的稳定域、吸引域问题，拟研究并提出一种基于有源阻尼和动态能量管理相结合的微网协调控制策略。项目研究旨在厘清制约车载微电网运行安全稳定的关键理论、技术问题，从而为我军全电化陆战平台综合电力系统的优化设计、先进控制提供理论依据。

中文关键词： 直流微网；恒功率负荷；脉冲功率负荷；稳定性；协调控制

英文摘要： In recent years, power systems in vehicles, ships and aircrafts have made a great change due to the sustained and rapid development of microgrid technologies. However, due to the wide connections of propulsion motors, electromagnetic rail guns and other large constant power loads and strong pulse power loads, the stability problem in such on-board microgrid system is more serious than that in the traditional one. In this context, the project presents a systematic study of the stability boundary and control strategies on DC microgrid system with constant power loads (CPLs) and pulse power loads (PPLs) simultaneously. A systematic assessment of the impact of the two typical loads on the DC micro-grid stability and their internal relations is well presented. Moreover, the influence mechanism of key system parameters on the DC microgrid stability is discussed. Then a capacity matching method of the distributed generations and storage system is proposed based on the optimization of the system stability margin. In addition, considering that the future combat equipment may be required to be with small size and little weight, the stable region and domain of attraction of a microgrid system with small inertia is thus studied in detail. Based on the active damping and dynamic energy management, a coordinated control strategy is then put forward. The research aims to clarify the key theoretical constraints and technical issues of the safe and stable operation of the DC microgrid, so as to provide a theoretical basis for the optimum design and advanced control of such all-electric army marine platform integrated power systems.

英文关键词： DC microgrid;constant power loads;pulse power loads;stability;coordinated control