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Method and system for detecting goose resolution of smart terminals

A smart terminal and resolution technology, applied in information technology support systems, electrical components, sustainable buildings, etc., can solve the problems of no unified conclusion of the standard and different GOOSE resolution accuracy

Active Publication Date: 2016-05-11
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, because the smart terminal technology, hardware selection, software development and other links mastered by each device manufacturer are different, there is no unified conclusion on whether to meet the standards of the State Grid Corporation for smart terminals
In addition, the technical methods adopted by each manufacturer are different, and the GOOSE resolution accuracy finally realized will be different.

Method used

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  • Method and system for detecting goose resolution of smart terminals
  • Method and system for detecting goose resolution of smart terminals
  • Method and system for detecting goose resolution of smart terminals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Considering that the resolution required by the standard should be less than 1ms, and the CPU’s ability to receive and process GOOSE messages selected by each manufacturer, in order to accurately examine the CPU resolution processing accuracy of each manufacturer and avoid errors caused by 1ms whole second intervals, In the following detection scheme, three experiments are designed. The first experiment sends three GOOSE control blocks with an interval of 0.8ms, the second experiment with an interval of 1.2ms, and the third experiment with an interval of 5ms.

[0085] The reason why three test intervals of 0.8ms, 1.2ms and 5ms are used here is because the resolution of the smart terminal to be tested is 1ms, but considering that the signal sent by the relay protection tester may have a slight time error, all increases 1.2 times the reliability factor. That is to say, even if the relay protection tester has a slight error, the GOOSE interval of 1.2ms must be able to be d...

Embodiment 2

[0087] In this embodiment, only three GOOSE control blocks can be used to send a test with an interval of 1.2 ms. If the 1.2 ms test can pass, the tested intelligent terminal meets the requirements.

Embodiment 3

[0089] Such as Figure 10 As shown, it is an actual test situation, in which the interrupt processing interval of intelligent terminal 1 is 0.6ms, the interrupt processing interval of intelligent terminal 2 is 1.6ms, and the interval of four GOOSE signals sent by the relay protection tester is 1.2ms , then if Figure 10 As shown, the GOOSE resolution test is carried out on the two smart terminals through the relay protection tester. The relay protection tester sends out a GOOSE signal for testing every 1.2ms. For the intelligent terminal with an interrupt processing interval of 0.6ms, it can clearly distinguish all the GOOSE signals of the tester, so the intelligent terminal is qualified; For a smart terminal of 1.6ms, signal 1 and signal 2 will be mistaken for simultaneous GOOSE signals, and the sequence cannot be determined, so the smart terminal is unqualified.

[0090] The sampling principle of the smart terminal is: the smart terminal can receive the GOOSE signal sent b...

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Abstract

The embodiment of the invention provides an intelligent terminal GOOSE resolution detection method and system. The method comprises the steps that multiple optical ports of a relay protection tester output a GOOSE message signal to a tested intelligent terminal according to the preset time; multiple straight jump ports of the intelligent terminal receive the GOOSE message signal outputted by the optical ports; the multiple straight jump ports of the intelligent terminal record the time when the GOOSE message signal is received; message information is generated by the intelligent terminal according to the time recorded by the multiple straight jump ports; a detection device receives the message information according to an industrial ethernet; and the detection result of GOOSE resolution of the intelligent terminal is generated by the detection device according to the message information and the preset time. An objective of detecting the tested intelligent terminal equipment in a comprehensive, detailed and profound way is realized so that the detection method has an important effect on mastering performance of the intelligent terminals of all manufacturers.

Description

technical field [0001] The present invention relates to the technical field of smart substations in electric power systems, in particular to the technical field of detection of smart terminals in smart substations, specifically a method and system for detecting GOOSE resolution of smart terminals. Background technique [0002] At present, the domestic smart grid is in a period of rapid development, and the construction of more and more smart substations has vigorously promoted the development of the smart grid. Smart substations use electronic transformers instead of conventional transformers, intelligent circuit breakers instead of conventional circuit breakers, IEC61850 protocol to transmit digital messages instead of traditional secondary analog quantities, and optical cables instead of cables to realize secondary circuits. Since there is no transmission of electrical quantity in the secondary system, the primary high-voltage system and the secondary low-voltage system ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00
CPCY02B90/20Y04S40/124
Inventor 高旭孟超杜丽艳王丰刘苗刘平马锁明刘蔚王沛然辛光明黄天啸张硕张思琪吴涛臧景茹李烜
Owner STATE GRID CORP OF CHINA
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