建立面向移动储能参与综合能源体辅助服务优化调度模型,采用列与约束生成法(column and constraint generation,C&CG)处理综合能源体内部风力、光伏发电的不确定性,建立电动汽车参与综合能源体辅助服务优化模型,并进行24 h优化调度...建立面向移动储能参与综合能源体辅助服务优化调度模型,采用列与约束生成法(column and constraint generation,C&CG)处理综合能源体内部风力、光伏发电的不确定性,建立电动汽车参与综合能源体辅助服务优化模型,并进行24 h优化调度。算例仿真结果表明,移动储能参与综合能源系统辅助服务,可以有效降低综合能源主体的运行成本,验证了所构建模型的有效性。展开更多
近年来,分布式能源技术(Distributed Energy Resource)得到了快速发展。分布式能源(DER)系统具有可靠、高效、清洁、环保、配置灵活等优势,有着巨大的发展潜力,因此研究分布式能源技术具有重要的理论意义和重大的应用价值。概述了国内...近年来,分布式能源技术(Distributed Energy Resource)得到了快速发展。分布式能源(DER)系统具有可靠、高效、清洁、环保、配置灵活等优势,有着巨大的发展潜力,因此研究分布式能源技术具有重要的理论意义和重大的应用价值。概述了国内外分布式能源的发展现状及应用前景,简要介绍了分布式能源的概念、技术和特点,分析了DER提供当前和未来的辅助性服务(频率控制、电压控制、拥塞管理、电能质量提高、网络恢复、孤岛操作和电网损耗优化)的控制能力(分布式发电机DGs,存储和加载)。主要重点是对技术能力的评估。此外,通过DER系统的电网连接技术分析了这种技术方法,因为不同类型的电网连接技术可以应用在同样的DER系统中,而且电网连接技术决定了整个DER系统的许多功能。展开更多
The present study assesses the possibility of implementing an auxiliary-service smart monitoring solution at power substations. The solution is intended to improve substation indices in terms of accident rates and und...The present study assesses the possibility of implementing an auxiliary-service smart monitoring solution at power substations. The solution is intended to improve substation indices in terms of accident rates and undesired events that result from initial incidents associated to failure of the Direct Current systems in charge of supporting the operation of protection elements. In recent years in Colombia, substation fires have been reported, and auxiliary services have been identified as a potential initial cause of these unfortunate events. In fact, in Bogotá (Capital city of Colombia), in the last decade, incidents occurred at four high-power substations, and the potential failure cause was associated to the operation of auxiliary services, according to the criteria of experts in the electrical sector. The present study illustrates how a monitoring system substantially improves the lifecycle of battery banks in a three-year period (8% lifecycle improvement together with an increase in reliability of the system by allowing more time for failure identification). The estimated financial benefits reach 2 million US dollars and stem from reducing the frequency of explosions at substations by 11%. The technology in question is assessed and recommended based on the results of various experiments, where various monitoring methods are tested, also considering the operation and maintenance costs that constitute an appropriate lifecycle evaluation.展开更多
文摘建立面向移动储能参与综合能源体辅助服务优化调度模型,采用列与约束生成法(column and constraint generation,C&CG)处理综合能源体内部风力、光伏发电的不确定性,建立电动汽车参与综合能源体辅助服务优化模型,并进行24 h优化调度。算例仿真结果表明,移动储能参与综合能源系统辅助服务,可以有效降低综合能源主体的运行成本,验证了所构建模型的有效性。
文摘近年来,分布式能源技术(Distributed Energy Resource)得到了快速发展。分布式能源(DER)系统具有可靠、高效、清洁、环保、配置灵活等优势,有着巨大的发展潜力,因此研究分布式能源技术具有重要的理论意义和重大的应用价值。概述了国内外分布式能源的发展现状及应用前景,简要介绍了分布式能源的概念、技术和特点,分析了DER提供当前和未来的辅助性服务(频率控制、电压控制、拥塞管理、电能质量提高、网络恢复、孤岛操作和电网损耗优化)的控制能力(分布式发电机DGs,存储和加载)。主要重点是对技术能力的评估。此外,通过DER系统的电网连接技术分析了这种技术方法,因为不同类型的电网连接技术可以应用在同样的DER系统中,而且电网连接技术决定了整个DER系统的许多功能。
文摘The present study assesses the possibility of implementing an auxiliary-service smart monitoring solution at power substations. The solution is intended to improve substation indices in terms of accident rates and undesired events that result from initial incidents associated to failure of the Direct Current systems in charge of supporting the operation of protection elements. In recent years in Colombia, substation fires have been reported, and auxiliary services have been identified as a potential initial cause of these unfortunate events. In fact, in Bogotá (Capital city of Colombia), in the last decade, incidents occurred at four high-power substations, and the potential failure cause was associated to the operation of auxiliary services, according to the criteria of experts in the electrical sector. The present study illustrates how a monitoring system substantially improves the lifecycle of battery banks in a three-year period (8% lifecycle improvement together with an increase in reliability of the system by allowing more time for failure identification). The estimated financial benefits reach 2 million US dollars and stem from reducing the frequency of explosions at substations by 11%. The technology in question is assessed and recommended based on the results of various experiments, where various monitoring methods are tested, also considering the operation and maintenance costs that constitute an appropriate lifecycle evaluation.
