优化智能配电网动态特性的技术方法

针对分布式电源、柔性负荷和电动汽车等在配电网层面的接入对智能配电网带来的影响,开展了智能配电网的不良动态问题研究。依据理论分析、多场景下PSCAD的仿真结果详细分析了分布式电源、柔性负荷和电动汽车等的接入可能会给智能配电网带来的不良动态问题。从整体出发,提出了若干优化智能配电网动态特性的技术方法,包括平抑智能配电网不良动态过程的能量动态补偿方法、综合改善电气联络关系和能量动态补偿功能的合环装置以及改善系统动态特性的附加控制方法。在此基础上,提出了基于人工智能的智能配电网系统动态模型构建的非解析方法。进而,提出了一种优化智能配电网动态特性的分层分布式精准协调控制系统框架。该文给出了对所提出的技术方法的原理框图,并阐明了它们的技术原理。

Technical Methods for Optimizing Dynamic Characteristics of Smart Distribution Network

Aiming at the impact that distributed generation, flexible load and electric vehicle can bring to smart distribution network, research on the adverse dynamic impacts of smart distribution network is carried out. The adverse dynamic issues are analyzed based on theoretical analysis and the PSCAD simulation results in multiple scenarios. Several technical methods for optimizing the dynamic characteristics of smart distribution network are proposed, including energy dynamic compensation method for suppressing the adverse dynamic process of smart distribution network, loop-closing device for improving electrical connection relationship and energy dynamic compensation, and supplementary control method for optimizing dynamic characteristics. On this basis, a non-analytical method based on artificial intelligence for dynamic model construction of smart distribution network system is proposed. Furthermore, a hierarchical distributed and accurate coordinated control system framework for optimizing the dynamic characteristics of smart distribution networks is proposed. This paper also gives some diagrams of the proposed technical methods and clarifies their technical principles.