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A complete secondary system can be split concerning the engineering responsibility into different parts. Example is separate engineering of line operation interlocking between substations. This paper presents a new approach to line operation IEDs engineering with exchanged information between substations, which is compatible with IEC 61850. In this paper, Architecture of Line Operation between substations...
Wind farm systems presented some unique challenges for protection. Ground faults on feeders will result in unfaulted phase voltages rising to line levels and transient over voltages can be produced, which can degrade insulation, resulting in eventual equipment failure. This paper focused on the particular problem of feeder ground faults. A novel, yet simple solution is presented that makes use of...
An improper switching operation can damage equipment and/or can affect the quality of supply to the customers. Normally, switches are opened and closed by operators using pre-generated guidelines for avoiding human errors. Software applications are used to automatically generate switching schemes which satisfy specified interlocking criteria. IEC 61850 proposed new requirement for switching operation...
Access control with strong authentication becomes crucial for the mission critical and safety critical operation of the substation automation system. According to IEC 61850, access control is needed when the user access to functions or the related LNs, especially to operational functions. But the standard only defines a simple way to resolve the access control problem without strong authentication...
Access control with identity authentication becomes crucial for critical circuit breaker operation in the substation automation system. According to IEC 61850, the implementation of access control policy depends on a virtual access view. But the standard only defines a concept to resolve the access control problem; neither the virtual access view nor the password verification procedure has proposed...
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