A verification device and verification method based on a discrete synchronous power source

A technology for synchronizing power and calibrating devices, which can be used in measuring devices, instruments, measuring electrical variables, etc., and can solve problems such as difficulty in wiring and difficult wiring.

Active Publication Date: 2017-05-03
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this double MU on-site verification method is that if the distance between the voltage MU and the current MU is far away, there will be difficulty in wiring during on-site verification, and it is difficult to wire from one end of the power source to the other MU connection port.

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  • A verification device and verification method based on a discrete synchronous power source

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Embodiment Construction

[0017] The present invention is described in detail below in conjunction with accompanying drawing:

[0018] like figure 1 As shown, a verification device based on a discrete synchronous power source, including a first discrete synchronous power source 1, a second discrete synchronous power source 2, a voltage MU3, a current MU4, and a digital energy meter calibrator 5 and a digital energy meter 6, wherein, the first discrete synchronous power source 1 and the second discrete synchronous power source 2 output voltage signals and current signals respectively, and the voltage MU3 is connected to the first discrete synchronous power source 1 , used to collect the output voltage signal and convert it into a message conforming to the IEC61850-9-2 protocol. -9-2 protocol message, the output terminals of voltage MU2 and current MU3 are respectively connected with digital energy meter calibrator 5 and digital energy meter 6 through switch 7, and said digital energy meter 6 receives I...

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Abstract

The invention discloses a calibrating device and a calibrating method based on discrete synchronous power sources. Two discrete synchronous power sources simulate an electronic transformer to output analog voltage and analog current of which the phases are synchronized; voltage MU and current MU respectively perform digital sampling on the analog voltage and the analog current, package a sampling value as an IEC61850-9-2 protocol message and output the IEC61850-9-2 protocol message; a digital electric energy meter calibrator receives the IEC61850-9-2 protocol message and analyzes digital voltage and current value carried in the message to obtain the analysis result of power and power factors; meanwhile, the digital electric energy meter calibrator receives power pulse outputted by a digital electric energy meter, and calibrates the digital electric energy meter, so that the discrete synchronous power sources are indirectly calibrated; the digital electric energy meter receives the IEC61850-9-2 protocol message and calculates the power according to the digital voltage and current value carried in the message.

Description

technical field [0001] The invention relates to a verification device and a verification method based on a discrete synchronous power source. Background technique [0002] In the process of intelligent transformation of traditional substations, the method of digitalization on the secondary side is used to transform traditional substations. Substations currently undergoing transformation generally use conventional transformers to add voltage MU (voltage merging unit) or current MU (current merging unit), so that the voltage and current signals are digitally converted at the source, thereby improving the intelligence level of traditional substations . The main disadvantage of this double MU on-site verification method is that if the distance between the voltage MU and the current MU is far away, there will be difficulty in wiring during on-site verification, and it is difficult to wire from one end of the power source to the other MU connection port. Contents of the inventi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/02
Inventor 冯亮汤炼丹谢烽谢腾跃谢越锋徐萌
Owner STATE GRID CORP OF CHINA
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