SYSTEMS AND METHODS FOR NETWORK FAILOVER IN DIGITAL SUBSTATIONS

    公开(公告)号:US20180034746A1

    公开(公告)日:2018-02-01

    申请号:US15483591

    申请日:2017-04-10

    Abstract: Systems and methods for network failover in digital substations are provided. One method includes receiving, by an intelligent electronic device (IED) from a process interface unit (PIU), in parallel a pre-configured data stream via a point-to point connection and one or more other data streams via an Ethernet network. The method further includes determining that at least one of the following failure conditions is satisfied: a frame in the pre-configured data stream is lost or delayed, quality of the data in the frame in the data stream is below a first threshold, period of the time associated with the data in the frame in the data stream is below a second threshold, or a health indicator associated with the PIU is below a third threshold. The method further allows identifying at least one redundant frame in the one or more other data streams. If the quality of data in redundant frame is satisfactory, the method proceeds to use the redundant frame for further processing.

    Systems and methods for network failover in digital substations

    公开(公告)号:US11038817B2

    公开(公告)日:2021-06-15

    申请号:US16824448

    申请日:2020-03-19

    Abstract: Systems and methods for network failover in digital substations are provided. One method includes receiving, by an intelligent electronic device (IED) from a process interface unit (PIU), in parallel a pre-configured data stream via a point-to point connection and one or more other data streams via an Ethernet network. The method further includes determining that at least one of the following failure conditions is satisfied: a frame in the pre-configured data stream is lost or delayed, quality of the data in the frame in the data stream is below a first threshold, period of the time associated with the data in the frame in the data stream is below a second threshold, or a health indicator associated with the PIU is below a third threshold. The method further allows identifying at least one redundant frame in the one or more other data streams. If the quality of data in redundant frame is satisfactory, the method proceeds to use the redundant frame for further processing.

    SYSTEMS AND METHODS FOR NETWORK FAILOVER IN DIGITAL SUBSTATIONS

    公开(公告)号:US20200220820A1

    公开(公告)日:2020-07-09

    申请号:US16824448

    申请日:2020-03-19

    Abstract: Systems and methods for network failover in digital substations are provided. One method includes receiving, by an intelligent electronic device (IED) from a process interface unit (PIU), in parallel a pre-configured data stream via a point-to point connection and one or more other data streams via an Ethernet network. The method further includes determining that at least one of the following failure conditions is satisfied: a frame in the pre-configured data stream is lost or delayed, quality of the data in the frame in the data stream is below a first threshold, period of the time associated with the data in the frame in the data stream is below a second threshold, or a health indicator associated with the PIU is below a third threshold. The method further allows identifying at least one redundant frame in the one or more other data streams. If the quality of data in redundant frame is satisfactory, the method proceeds to use the redundant frame for further processing.

    SYSTEMS AND METHODS FOR SYNCHRONIZING TIME SOURCES WITHIN A PROTECTION ZONE OF A DIGITAL POWER SUBSTATION

    公开(公告)号:US20180109369A1

    公开(公告)日:2018-04-19

    申请号:US15293396

    申请日:2016-10-14

    CPC classification number: H04L7/0016 H02H1/0084 H02H7/26 H04J3/06 H04L7/0008

    Abstract: Provided is a system for synchronizing time sources within a protection zone of a digital power substation. The system includes a global time source, a processing communication network, an electronic, and a process unit. The process unit includes a time source configured to receive and process data packets, which include a first time signal and first time quality from the global time source and the second time signal and second time quality from the electronic device. A time source of the process unit synchronizes with a protection zone master clock within the electronic device where the first time signal is unavailable or the first time quality of the global time source is degraded below a predetermined threshold. The embodiments also include a method for synchronizing time sources within a protection zone of a digital power substation.

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