Organizational Changes Requirements Related to the Testing of IEC 61850 Based Digital Substations
The transition from conventional hardwired substation protection,automation and control systems (SPACS) to IEC 61850 based systems in digital substations requires organizational changes related to their engineering,testing and maintenance.These requirements are especially important from the point of view of the testing of the SPACS during the commissioning and maintenance of the digital substations.Some important drivers for the need for organizational changes are also the requirements from improvement in the reliability,quality and efficiency of the systems.The paper first analyses the functional integration in numerical Intelligent Electronic Devices (IEDs), as well as in centralized substation protection, automation and control systems. With conventional substations utilities use different secondary devices for protection, automation, control, measurements, metering, monitoring, event reporting and recording. They have different groups responsible for the engineering, testing and maintenance of each type of secondary equipment. Such organizational structure has been established through many decades of use of predominantly electromechanical devices. However such approach cannot be used anymore when the same devices is used to perform all listed above functions. The paper proposes an approach based on the creation of a hierarchical organization of cross-domain teams that are responsible for the definition of the testing requirements, methods and tools as part of the SPACS engineering process. Part of their responsibility is the development of standardized test plans that can support test automation. The need for role-based access to the testing and the requirements for coordination between representatives of the different domain specialists is discussed. It is proposed that a specialized testing group should be responsible for the execution of any tests in order to enforce the coordination between the different domain groups or specialists. The paper later analyses some of the key features in the IEC 61850 standard that allow the isolation of individual functions, sub-functions and function elements for their maintenance testing in a live substation. The use of Simulation and Test modes based on utility specific testing philosophy and practice defined by a central standardization cross-domain expert group. Another organizational change discussed in the paper is the extensive use of primary and secondary equipment condition monitoring based on the capabilities of SPACS. This will allow to shift from Time Based Maintenance (TBM) to Condition Based Maintenance (CBM) and significantly improve the efficiency of operation of SPACS and limit the need for maintenance testing. The use of operator actions as a component of the testing process is discussed later in the paper. If the design of the SPACS takes such requirements into consideration it is possible to significantly reduce the need for maintenance testing of components that cannot be monitored.
Testing IEC 61850 digital substations PACS
Alexander Apostolov
OMICRON electronics USA
国际会议
国际大电网会议组织保护与自动化专业委员会年度会议暨学术研讨会
南京
英文
1-7
2015-09-20（万方平台首次上网日期，不代表论文的发表时间）