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Synchronous termination method and system of wide area fault recording

A technology of fault recording and fault recording device, applied in the field of wide-area fault recording synchronization termination method and system, can solve the problems of inability to meet communication bandwidth requirements, high construction cost, large dispersion of communication delay, etc., and achieve beneficial results. The effect of system failure analysis

Active Publication Date: 2018-03-06
NR ELECTRIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The E1 network is affected by the dynamic generation of routing links, and the communication delay has a large discreteness; and the communication bandwidth of the E1 network is only 2Mbps, which cannot meet the communication bandwidth requirements of IEC61850-9-2
In this case, in order to realize the synchronization method in the above patent, it is necessary to build a dedicated wide-area process layer communication network, and the construction cost is too high

Method used

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  • Synchronous termination method and system of wide area fault recording
  • Synchronous termination method and system of wide area fault recording
  • Synchronous termination method and system of wide area fault recording

Examples

Experimental program
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Effect test

Embodiment 1

[0067] like figure 1 As shown, the method for synchronously ending wide-area fault recording in this embodiment includes:

[0068] S1, grouping multiple fault recording devices, each fault recording device in the same group is connected and communicated through a communication network;

[0069] S2, setting the maximum recording duration T and delay waiting time △T of each fault recording device;

[0070] S3, for each fault recording device, define a status identifier respectively, and the status identifier includes a fault return identification bit corresponding to each fault recording device in the same group;

[0071] S4, when any fault recording device in a group starts, the fault recording device sends a network start signal to other fault recording devices in the same group through the communication network; when any fault recording device in a group starts to return, Then the fault recording device sends a network return signal to other fault recording devices in the s...

Embodiment 2

[0083] like figure 2 As shown, the method for synchronously ending wide-area fault recording in this embodiment includes:

[0084] S1, grouping multiple fault recording devices, each fault recording device in the same group is connected and communicated through a communication network;

[0085] S2, setting the maximum recording duration T and delay waiting time △T of each fault recording device;

[0086] S3, for each fault recording device, respectively define a fault return identification bit and a recording termination identification bit, and the recording termination identification bit includes an effective bit of the recording termination identification corresponding to each fault recording device in the same group;

[0087] S4, when any fault recording device in a group starts, the fault recording device sends a network start signal to other fault recording devices in the same group through the communication network; when any fault recording device in a group starts to ...

Embodiment 3

[0098] Based on Embodiment 1 and Embodiment 2, the satellite timing system of the present invention is GPS or Beidou satellite system. The communication network is E1 network. Due to the delay waiting time and the related design of the synchronization time selection scheme during the delay waiting process, the synchronization end recording between multiple fault recording systems is no longer affected by network delay, so the existing E1 network can be used Communicate and reduce cost input.

[0099] In S1, they are grouped according to the power supply structure relationship between the substations where the fault recording devices are located. For example, the fault recording devices in the traction station, AT station and partition station arranged in sequence along the traction power supply line are a group , the entire traction power supply line is divided into multiple groups, and the fault recording devices in each group are connected and communicated with each other t...

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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)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04L12/24G01R31/00
Inventor 李宇琦魏巍侯炜陈俊陈佳胜
Owner NR ELECTRIC CO LTD
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