Synchronous termination method and system of wide area fault recording

Abstract

The invention discloses a synchronous termination method and system of wide area fault recording. Fault recording devices are arranged in each substation in the system and are grouped according to a power supply system structure, and the devices in the same group are accessed to a satellite timing system and are connected via a communication network for communication. The method comprises the following steps: after the fault recording devices are started or return, sending starting signals or return signals to the other devices in the same group, and when the fault recording devices return orreceive network return signals, starting to wait for a time length delta T; marking the effective positions 1 according to the return state of the fault recording devices in the group during the waiting; if the effective positions are all 1 after the waiting, terminating the recording at the latest return moment in the return signals in the group; and if not all effective positions are 1, terminating the recording at the latest return moment of the delta T in the group. According to the synchronous termination method and system, synchronous communication can be achieved by using the constructed non-real-time E1 network, the synchronous termination of wide area fault recording can be achieved, and more complete data support is provided for the system fault analysis.

Description

technical field

[0001] The invention relates to the technical field of wide-area wave recording for power supply systems, in particular to a method and system for synchronously ending wide-area fault wave recording. Background technique

[0002] At present, the synchronous end of wide-area fault recording for the traction power supply system has not been considered, which is not conducive to analyzing faults from the system level, such as multi-point faults in the traction power supply system, AT substation fault removal, start, return and end recording , and the possible faults of the partitions have not been removed and are in continuous recording, so the final recording data cannot fully reflect the state of the system during the entire fault period due to the lack of part of the AT substation data, which is not conducive to the system Perform failure analysis.

[0003] "Power System Wide-area Protection Fault Recording Method" (patent application number: 201210035742.9)...

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