基于输入-状态稳定理论的独立电力系统稳定性分析与控制方法研究

An isolated power system usually operates under persistent disturbances. Due to its limited capacity, variable topologies, diverse operating conditions, and the lack of support from bulk power systems, the stable and efficient operation of an isolated power system faces many challenges. Besides, with the increasing penetration of renewable energy sources, the isolated power system will operate with more volatility and uncertainty. Therefore, advanced stability analysis and control approaches are required to guarantee the continuous operation of an isolated power system under diverse operating and disturbed conditions..Based on the input-to-state stability theory, this research will focus on the stability analysis and control of isolated power systems. First, basic theory and method of decoupling stability analysis is developed to perform fast stability analysis for isolated power systems under varying topologies and operating conditions, and to provide support for the decision-making procedure of isolated power systems; Second, a transient adaptive control method is proposed for isolated power systems to ensure the stability and optimality of their dynamic performances under persistent disturbances. Third, a multi-stage fast reconfiguration algorithm is proposed, which considers stability constraints of isolated power systems, and guarantees their continuous power supply under fault conditions..The achievements of the project can provide theoretical foundations and key technologies for the stable and efficient operation of isolated power systems.

独立电力系统容量有限、运行工况与网络拓扑多变、运行过程中扰动不断并且缺乏大型电力系统的支持，使得独立电力系统的安全稳定和高效运行面临诸多挑战。同时，可再生能源的接入将使独立电力系统的运行状态表现出更强的波动性和不确定性。因此，亟需寻求先进的稳定性分析与控制方法，以保障独立电力系统在各种扰动、故障下的供电连续性。本项目基于输入-状态稳定理论研究适用于独立电力系统的稳定性分析与控制的基础理论与方法：提出独立电力系统稳定性解耦分析理论，在独立电力系统多变的运行场景和网络拓扑结构下快速地进行稳定性校验，为独立电力系统的运行与控制提供决策依据；提出独立电力系统暂态自适应控制方法，以保证系统在持续扰动影响下的稳定性和动态性能的最优性；提出考虑稳定性约束的独立电力系统多阶段快速重构算法，以保证系统在故障失电时的连续供电能力。本项目的研究成果可为独立电力系统高效、稳定地运行提供理论基础和关键技术支撑。

独立电力系统是一类复杂的非线性动态系统，保障其稳定运行是独立电力系统正常工作的首要条件。独立电力系统工作环境恶劣，网络拓扑灵活多变，若无先进的的稳定性分析以及控制策略予以保障，则一个微小的故障也可能导致设备不能运行或某些功能失效，从而给独立电力系统带来灾难性的后果。因此，亟需寻求先进的稳定性分析与控制方法，以保障独立电力系统在各种扰动、故障下的供电连续性。本项目基于输入-状态稳定理论研究适用于独立电力系统的稳定性分析与控制的基础理论与方法：提出了独立电力系统稳定性解耦分析理论，在独立电力系统多变的运行场景和网络拓扑结构下快速地进行稳定性校验，为独立电力系统的运行与控制提供决策依据；提出了独立电力系统暂态自适应控制方法，以保证系统在持续扰动影响下的稳定性和动态性能的最优性；提出了考虑稳定性约束的独立电力系统多阶段快速重构算法，以保证系统在故障失电时的连续供电能力。本项目的研究成果可为独立电力系统高效、稳定地运行提供理论基础和关键技术支撑。