复杂电力大系统的递阶结构化模型及自相似特性

在完整考虑实际电力系统中分层/递阶控制结构与元件的复杂非线性特征的基础上，建立了递阶电力系统的结构化模型。其结构化特征主要体现在递阶系统模型具有统一的变量定义(内、外接口变量的定义)和统一的形式(包括整体表示和分解表示)，同时递阶系统的结构可根据实际需要灵活划分(即可将系统划分为主系统、子系统、第2代子系统，……，直至元件，并且可任意组合、重新划分)。此外，所建立的递阶系统模型还具有明显的结构自相似特性与数学模型自相似特性。为新一代递阶控制的结构与方法研究打下了坚实的基础。

Hierarchical Structural Model of Large-scale Complex Power Systems and Its Self-similarity

By fully considering the multi-level/hierarchical control configuration of real power systems and the complex nonlinear characteristics of components, this paper presents the structural expression of hierarchical power systems' model. The structural characteristics of the proposed model is featured by the uniform variable definitions (the definitions of internal and external interface variables) and the uniform mathematical expressions (including integral expression and detailed expression) of all the models of the multi-level/hierarchical systems (main-system, subsystem, sub-subsystem,……, till component). Meanwhile, according to actual needs the structure of the hierarchical system can be flexibly divided and re-divided. Furthermore, there are obvious structure self- similarity and mathematical expression self-similarity of the proposed hierarchical system model, which provides a good platform to study the new generation hierarchical control configuration and hierarchical control method of the large-scale complex power systems.