考虑不确定性互补发电的离网运行特性评估  

Characteristic assessment considering uncertainty for off-grid operation of complementary power generation

作　　者：刘春晖 张政 范红真 牟辉龙 袁方 LIU Chunhui;ZHANG Zheng;FAN Hongzhen;MU Huilong;YUAN Fang(College of Electrical Engineering and Automation,Shandong University of Science and Technology,Qingdao 266590,China;Technical College Branch of State Grid Co.,Ltd.,Jinan 250002,China)

机构地区：[1]山东科技大学电气与自动化工程学院,山东青岛266590 [2]国家电网有限公司技术学院分公司,山东济南250002

出　　处：《现代电子技术》2021年第23期143-148,共6页Modern Electronics Technique

基　　金：国家自然科学基金青年基金(61801271);山东科技大学自动化类优秀教学团队建设项目(JXTD20190505)。

摘　　要：因微电网在离网状态下不能与电网交互功率,只能由自身为负荷提供电能,故对微电网的离网运行特性进行全面分析显得尤为重要。根据微电网发电系统的运行特性,并结合多种评价指标,建立了不同时间尺度下的微电网运行评价指标体系,并对离网型风光水储互补发电系统的运行特性进行分析。结果表明,离网状态下的风光水储互补运行系统在不同时间尺度下具有较高的运行可靠性与稳定性,能实现微电网的安全运行,同时以融合日前1 h尺度调度优化与日内15 min尺度滚动调度优化的两级调度策略也验证了微电网中多种电源在不同时间尺度上的互补性与经济性,为微电网的经济调度提供了参考依据。Since microgrid fails to interact with the power grid in the off-grid state,and can only provide electric energy for the load by itself,it is particularly important to conduct a comprehensive analysis of the off-grid operation characteristics of microgrid.According to the operation characteristics of the microgrid power generation system,a microgrid operation evaluation index system under different time scales is established in combination with multiple evaluation indexes to analyze the operation characteristics of wind-light-water storage complementary power generation system in the off-grid state.The analytical results show that the wind-light-water storage complementary operation system in the off-grid state has high reliability and stability under different time scales,and can achieve the safe operation of microgrid.The complementarity and economical efficiency of various power sources in microgrid under different time scales are also verified by means of the two-grade scheduling strategy integrating the one-hour-scale scheduling optimization before the day and the 15-minute-scale rolling scheduling optimization within the day,which provides a reference for the economic dispatch of microgrid.

关 键 词：离网运行 微电网 互补发电 评价指标 安全运行 调度优化 

分 类 号：TN99-34[电子电信—信号与信息处理] TM732[电子电信—信息与通信工程]