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Digital relay protection tester time verification system and method

A relay protection and time verification technology, applied in emergency protection circuit devices, instruments, measuring devices, etc., can solve problems such as the inability to verify the digital message output and switch output time accuracy of digital relay protection testers.

Active Publication Date: 2020-10-09
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the prior art cannot verify the accuracy of the digital message output and switching value output time of the digital relay protection tester, therefore, a digital relay protection tester time verification system and method are provided , to verify the accuracy of the digital message output and switch output time of the digital relay protection tester, and ensure the normal commissioning of the substation

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  • Digital relay protection tester time verification system and method
  • Digital relay protection tester time verification system and method
  • Digital relay protection tester time verification system and method

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Embodiment 1

[0050] Such as figure 1 As shown, the time verification system of a digital relay protection tester of the present invention includes: a GPS timing system, a digital relay protection tester, a data conversion device, a network message recording and analysis device and computer equipment.

[0051] Wherein, the data conversion device refers to a device that can convert an analog signal into a digital signal, and can also convert a digital signal into an analog signal. The network message record analysis device refers to the network message analysis record and fault filtering device, which is used to analyze the accuracy of the time of digital message output and switch output. Computer devices in this embodiment include, but are not limited to, personal computers, notebook computers, smart phones, tablet computers, and ipod touches.

[0052] The GPS timing system is respectively connected with the digital relay protection tester and the network message record analysis device, th...

Embodiment 2

[0088] Such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that a digital relay protection tester time testing method includes:

[0089] S10: Synchronize the time of the digital relay protection tester and the network message recording and analyzing device through the GPS timing system.

[0090] S20: When the time synchronization time reaches the preset time length, the digital relay protection tester receives the target signal, and outputs the target signal to the data conversion device and the network message recording and analysis device respectively, and takes the time when the target signal is output as the target output time .

[0091] S30: The data conversion device, after receiving the target signal sent by the digital relay protection tester, converts the target signal to generate a pre-processed signal, and sends the pre-processed signal to the digital relay protection tester and the network report respectively Documentation analy...

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Abstract

The invention discloses a digital relay protection tester time verification system and method. The digital relay protection tester time verification system comprises a GPS time service system, a digital relay protection tester, a data conversion device, a network message recording and analyzing device and computer equipment. The GPS time service system is respectively connected with the digital relay protection tester and the network message recording and analyzing device; the digital relay protection tester is connected with the network message recording and analyzing device, the data conversion device is respectively connected with the digital relay protection tester and the network message recording and analyzing device, and the digital relay protection tester and the network message recording and analyzing device are respectively connected with the computer equipment. The computer equipment determines whether the time of the digital relay protection tester is accurate by calculating whether the time difference of the digital relay protection tester from receiving the target signal to receiving the preprocessing signal is within an allowable error range so as to ensure whether the transformer substation can be debugged normally.

Description

technical field [0001] The invention relates to the technical field of digital substation test verification in electric power systems, in particular to a time verification system and method for a digital relay protection tester. Background technique [0002] With the development of my country's power industry, digital substations, as the development trend of future substations, have become one of the important components of smart grids. In order to meet the testing needs of digital substations, digital relay protection testers have emerged. As an important debugging equipment for digital substations, the digital relay protection tester can send and receive digital messages under different standards of IEC61850-9-1, 61850-9-2, GOOSE and IEC60044-7 / 8 and check the received messages. Analysis test can also be used to test the state information of the switch. [0003] In the substation debugging process, regardless of the protection test or other intelligent equipment debugging...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00H02H1/00
CPCG01R35/00H02H1/0061
Inventor 王大兴刘学文林波李汶蒿杨康何宇
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST