Protection device with communication bus fault diagnosis function, system and method

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United States of America Patent

PATENT NO 9711961
SERIAL NO

14533210

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Abstract

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A method is disclosed for diagnosing faults on a communication bus used to transmit zone selective interlocking signals in a power distribution network. The method includes configuring interfaces of all protection devices connected to the same communication bus to be input ports within a first diagnosis time period; detecting, at each protection device connected to the communication bus, an input signal received by the input port thereof; and if abnormality is detected in the input signal, the protection device issuing a first alert associated with the corresponding interface.

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Patent Owner(s)

  • SIEMENS AKTIENGESELLSCHAFT

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Wei Gang Shanghai, CN 17 23
Dankert, Mario Raguhn-Jessnitz, DE 5 12
Du, Feng Shanghai, CN 43 194
Zhuo, Yue Beijing, CN 52 142

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