微网安全风险评估研究

项目名称： 微网安全风险评估研究

项目编号： No.51477041

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 电工技术

项目作者： 袁越

作者单位： 河海大学

项目金额： 75万元

中文摘要： 电力系统故障可能导致局部直至大面积的停电，对经济、社会、环境等造成影响，风险评估已成为电力工业具有挑战性的一项基本任务。微网是近年来新兴的电力系统技术，能够最大发挥分布式发电在经济、能源和环境中的优势。同时，由于与大电网电源结构、运行方式及保护控制体系的不同，使得微网的风险评估技术也有所不同，面临新的问题和挑战。本项目针对微网自身固有的特性及其区别于传统电力系统风险评估的特点，以风险评估的基本理论为基础，深入研究微网风险评估的理论方法和技术体系，量化微网对电力系统带来的风险行为。本项目主要研究内容包括：微网元件的可靠性模型、孤岛运行模式下的微网安全风险评估、并网运行模式下的微网安全风险评估、微网风险评估中系统薄弱环节的识别与跟踪、计及用户经济损失的微网风险严重度计算。通过本项目研究，能够建立完善的微网安全风险评估技术体系，为电力系统更大规模、更高比例的接入微网奠定理论基础。

中文关键词： 智能电网；微电网；安全分析；风险评估

英文摘要： Taking into account the fact that power system fault may lead to a local or even large-scale blackout of power grid, which might have bad impacts on economy, society and environment, the risk assessment has become one of the most challenging and essential tasks in the power industry. As a rising power system technology in recent years, microgrid can take full advantages of distributed generations in economy, energy and environment. Meanwhile, the risk assessment technology of microgrid is different from that of utility grid due to the differences of power supply structure, operation mode as well as protection and control system between them, thus it will face new problems and challenges. Considering the inherent characteristics of the microgrid and the charateristics of its risk assessment, which is different from that of the traditional power system, this project made an intensive study of the theoretical methods and techniques of the risk assessment in microgrid based on the basic theory of the risk assessment. The main contents of this project are as follows: the reliability model of microgrid components; the security risk assessment of the microgrid in an isolated mode; the security risk assessment of grid-connected microgrid; identifying and tracking the weak parts of the system during risk assessment of the microgrid; the calculation of severity of the risk of microgrid considering consumer's economic losses. An optimal technical system of microgrid security risk assessment is proposed, what's more, a theoretical basis for a larger scale and a higher proportion of microgrid integration into the power system will be established through this research project.

英文关键词： Smart Grid;Microgrid;Security Analysis;Risk Assessment