微电网脆弱性预评估方法  

Vulnerability pre-assessment method for microgrid

作　　者：周磊[1] 吴辉 嵇文路 陈文君 陈美璇 刘皓明[3] 

机构地区：[1]国电南瑞科技股份有限公司,南京211000 [2]国网江苏省电力公司南京供电公司,南京210019 [3]河海大学能源与电气学院,南京210098

出　　处：《电力需求侧管理》2018年第1期20-24,共5页Power Demand Side Management

基　　金：国家自然科学基金资助项目(51207044)

摘　　要：对未来某一时刻的微电网运行状态和脆弱程度作出准确评估,有利于发现薄弱环节,实现系统自愈运行。基于微电网模型与特性,提出基于风险理论的微电网脆弱性预评估方法。首先对微电网脆弱性进行定义,其次根据微电网各脆弱事件发生的概率及造成的后果严重度,建立微电网脆弱性预评估指标体系,包括发电容量充裕度和系统供电脆弱性两大类,最后建立微电网预评估的流程步骤,并通过算例验证评估指标的有效性及合理性。Precise assessment of the operation and vulnerability in microgrid at a certain time in the future contributes to find out the weak point in the system in time and realize self-healing operation of microgrid. Based on the characteristics of microgrid, a vulnerability pre-assessment method for microgrid is proposed. Firstly, the definition of microgrid's vulnerability is given. Then, according to the occurrence probability of every influential event and severity of corresponding results, a vulnerability index system is established, mainly including indices of generation capacity adequacy and indices of power supply vulnerability. Eventually, the procedures and specific steps of vulnerability pre-assessment for microgrid are presented, and its effectiveness and validity is verified by case studies.

关 键 词：微电网 脆弱性 预评估 概率模型 指标体系 

分 类 号：TM727[电气工程—电力系统及自动化]