基于分布式功能的站域保护

Station domain protection based on distributed function

由于保护设备配置以及数据获取的单一化,影响现有智能保护方案在设备故障时的可靠性。为了提高保护方案的可靠性,保证设备故障或者数据丢失情况时保护方案的可靠运行,提出了保护功能分散化、信息获取多元化、数据处理并行化的优化方案。包括以智能保护设备IED为基础构建了基于二次保护信息的RIED;将源数据发送给多个IED/RIED构成数据冗余,提高数据冗余性;通过不同的算法实现相同的功能,并将算法分散到不同的IED,提高算法的冗余性;利用保护算法的中间量信息实现设备可靠性监测。分析表明该优化方案可有效地提高设备故障及数据丢失时的保护性能,增加了保护方案的可靠性。

In the existing smart protection schemes, due to the simplification of protective equipment configuration and data acquisition, when the device fails, the entire protection program will be in lower reliability. In order to improve the reliability of protection schemes, this paper proposes an optimization program with protection decentralization, diversified information acquisition and parallel data processing. When the equipment failure or data loss situation occurs, the protection scheme is still able to operate reliably. This program constructs the RIED based on the secondary protection information; transfers the source data to multiple IED/RIED to build data redundancy; uses various algorithms to achieve the same functions, spreads the algorithm to different IEDs to improve the algorithm redundancy; and uses an intermediate amount of information of protection algorithms to achieve equipment reliability monitoring. Analysis shows that the optimization scheme can effectively improve the protection performance in the conditions of equipment failure and data loss, increasing the reliability of the protection scheme.