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On-site detection system and method for metering characteristics of merging unit

An on-site detection and characteristic technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problem of periodic detection of combined units that cannot be used for measurement, the inability to ensure the accuracy and validity of the final electric energy measurement results, and the inability to effectively control the errors of the combined unit. and other issues, to achieve stable and reliable measurement performance, legality, and ensure the effect of the measurement system

Active Publication Date: 2016-08-31
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] At present, the domestic calibration system suitable for the measurement performance of the merging unit for measurement has not yet been established, especially for the detection method of the merging unit that has been installed on site and in operation is not yet clear, resulting in the inability to periodically test the merging unit for measurement and effectively control The error introduced by the merging unit cannot ensure the accuracy and validity of the final electric energy measurement result

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  • On-site detection system and method for metering characteristics of merging unit
  • On-site detection system and method for metering characteristics of merging unit
  • On-site detection system and method for metering characteristics of merging unit

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Embodiment Construction

[0051] Below in conjunction with accompanying drawing and embodiment describe in detail:

[0052] 1. System

[0053] 1. Overall system

[0054] Such as figure 1 , the system includes the working environment - the tested merging unit 100, the TV secondary circuit 200, the TA secondary circuit 300, the synchronous clock 400 and the optical fiber digital energy meter 500;

[0055] A merging unit on-site detection device 600 is provided;

[0056] The merging unit 100 under test, the TV secondary circuit 200, the TA secondary circuit 300, the synchronous clock 400 and the optical fiber digital electric energy meter 500 are respectively connected to the merging unit on-site detection device 600;

[0057] The on-site detection device 600 of the merging unit comprises an analog signal acquisition unit 610, a data processing control unit 620, a man-machine interface 630, a synchronous signal unit 640 and a message processing unit 650, an analog signal acquisition unit 610, a data pr...

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Abstract

The invention discloses a merging-unit metrological-characteristic on-site detecting system and a method thereof, and belongs to the field of measurement and detection in smart power grids. The system comprises a detected merging unit (100), a TV secondary circuit (200), a TA secondary circuit (300), a synchronous clock (400) and an optical fiber digital electric energy meter (500). A merging-unit on-site detecting device (600) is arranged. The detected merging unit (100), the TV secondary circuit (200), the TA secondary circuit (300), the synchronous clock (400) and the optical fiber digital electric energy meter (500) are connected with the merging-unit on-site detecting device (600) respectively. Under the circumstance that a bay is not powered off, a ratio error and an angle error of sampling of the merging unit can be detected, and therefore the errors of the merging unit can be controlled effectively, and it is guaranteed that a measuring system in an intelligent substation is accurate and effective.

Description

technical field [0001] The invention belongs to the field of metering and detection in smart grids, and in particular relates to an on-site detection system and method for metering characteristics of a merging unit; specifically, the present invention is compatible with the metering (steady-state) characteristics of a merging unit of traditional transformer AC sampling The on-site detection method is mainly used to judge the ratio difference and angle difference characteristic detection of the merging unit compatible with the traditional transformer AC sampling. Background technique [0002] With the development of smart grid technology, in the first generation of digital substations, the reliability of photoelectric transformer (ETV / ETA) products is not high, and the shortcomings of unstable operation are gradually highlighted. Therefore, the second-generation smart substation requires the AC sampling mode of traditional transformer plus merging unit for intervals of 110kV ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/00
Inventor 雷鸣郭玥郑欣刘恒郭雨汪司珂庞博张爽
Owner STATE GRID CORP OF CHINA
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