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Test method of parameter algorithm based on iec61850 sampling value

A test method and sampling value technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of immature and blank testing specifications, and achieve the effects of simplifying test operations, accurate testing, and objective error analysis

Active Publication Date: 2018-02-09
STATE GRID CORP OF CHINA +2
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  • Claims
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AI Technical Summary

Problems solved by technology

However, the current research, theory, testing technology, and testing specifications on this aspect are still immature or still in the blank, and the implementation of "digital measurement" technological innovation is at the right time.

Method used

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  • Test method of parameter algorithm based on iec61850 sampling value
  • Test method of parameter algorithm based on iec61850 sampling value
  • Test method of parameter algorithm based on iec61850 sampling value

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Embodiment Construction

[0042] The present invention will be described in further detail in conjunction with the accompanying drawings and specific embodiments.

[0043] For a digital measurement device, its algorithm accuracy verification includes the following three aspects:

[0044] 1) Algorithm accuracy and resolution of power-off parameter for sinusoidal periodic signal;

[0045] 2) Non-sinusoidal periodic signal (harmonic) power-off parameter algorithm accuracy;

[0046] 3) Accuracy of electric energy integration.

[0047] Among them, the electrical parameters include: voltage effective value; current effective value; phase difference value; power factor value; phase separation and total active power calculation value; phase separation and total reactive power calculation value; apparent power value.

[0048] Such as figure 1 As shown, the electrical parameter algorithm test system based on IEC61850 sampling value of the present invention includes: computer, IEC61850 protocol data message ge...

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Abstract

The invention discloses a test method based on a parameter algorithm of IEC61850 sampling value. The test system based on the test method includes a computer, an IEC61850 protocol data message generator, a data message analyzer, an electrical parameter tested device and a high-precision timing The IEC61850 protocol datagram generator is a virtual signal generator that outputs measured value messages in time sequence according to the IEC61850 protocol. The datagram analyzer is a datagram that can be generated by the IEC61850 protocol datagram generator. A data analyzer that analyzes the text and judges whether the sampling value is correct. The test system can verify the accuracy and resolution of the electrical parameter algorithm under the sinusoidal periodic signal; the accuracy of the electrical parameter algorithm and the accuracy of the electric energy integration under the non-sinusoidal periodic signal. The invention is used to detect the accuracy of the algorithm based on the IEC61850 data model, eliminates the influence of the time factor, and simplifies the test process.

Description

technical field [0001] The invention relates to a testing method of a parameter algorithm based on IEC61850 sampling values, and belongs to the technical field of digital substation measurement. Background technique [0002] The on-site measurement values ​​of the digital substation are based on the instantaneous sampling values ​​(SV) of voltage and current signals based on the IEC61850 data communication protocol. The voltage and current signal sampling values ​​are separated by analysis, and the electrical parameter values ​​such as voltage effective value, current effective value, power value, and phase are calculated through a certain numerical algorithm, and the electric energy value within a period of time can also be obtained by continuously accumulating the instantaneous power value. It can be seen from this that digital measuring equipment is a pure numerical calculation equipment or algorithm calculator, and the algorithm and accuracy of its parameters reflect the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/00
Inventor 穆小星徐晴刘建田正其周超祝宇楠
Owner STATE GRID CORP OF CHINA
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