基于时序特性的微电网安全运行域模型及影响机理分析

为确定不同时序下接入配电系统的微电网安全运行范围，并对不同微电网之间的运行交互影响进行分析，以含微电网的配电系统为研究对象，提出基于时序特性的微电网安全运行域(TSC-MGSOR)模型及其影响机理分析方法。对微电网外特性进行建模，以描述不同时刻下微电网的发用电状态；在充分考虑可再生能源发电时序特性对微电网外特性影响的基础上，提出TSC-MGSOR的概念及模型，并给出模型的求解算法；基于所提TSC-MGSOR模型，分析微电网的接入对一维/二维TSC-MGSOR的影响机理。基于改进的IEEE 33节点系统进行仿真验证，结果表明，所提TSC-MGSOR模型能精确描述不同时刻微电网的安全运行范围，所提一维/二维TSC-MGSOR影响机理分析方法能有效分析微电网不同接入模式对一维/二维TSC-MGSOR的影响。

Time sequence characteristic-based microgrid safety operation region model and influence mechanism analysis

In order to determine the safety operation range of microgrid accessed to distribution network under different time sequences, and analyze the operation interaction influence between different microgrids, the distribution system with microgrid is taken as the research object, and the time sequence characteristic-based microgrid safety operation region(TSC-MGSOR) model and its influence mechanism analysis method are proposed. The external characteristic of microgrid is modeled to describe the power generation and consumption states of microgrid at different moments. On the basis of fully considering the influence of time sequence characteristic of renewable energy generation on the external characteristic of microgrid, the concept and model of TSC-MGSOR are proposed, and the solving algorithm of the model is given. On the basis of the proposed TSC-MGSOR model, the influence mechanism of microgrid access on one/two-dimensional TSC-MGSOR is analyzed. Simulation and verification are carried out based on a modified IEEE 33-bus system, and the results show that the proposed TSC-MGSOR model can accurately describe the safety operation range of microgrid at different moments, and the proposed influence mechanism analysis method of one/two-dimensional TSC-MGSOR can effectively analyze the influence of different access modes of microgrid on one/two-dimensional TSC-MGSOR.