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Measurement error and transformer loss self-measurement method and device

A technology of measurement error and measurement device, which is applied in the direction of measurement device, measurement of electrical variable, measurement of resistance/reactance/impedance, etc., can solve the problems of real-time measurement and detection of measurement error variable loss and change, and lack of mature technology

Active Publication Date: 2017-03-29
侯飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, the real-time measurement and detection of measurement errors and variable loss changes is a particularly difficult problem without mature technology

Method used

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  • Measurement error and transformer loss self-measurement method and device
  • Measurement error and transformer loss self-measurement method and device
  • Measurement error and transformer loss self-measurement method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0049] The embodiment of the present invention provides a substation with metering error and variable loss self-testing functions, including at least one electric energy metering device with known overall error as an error standard, an incoming line electric energy metering device, and an outgoing line electric energy metering device, wherein the electric energy The incoming line is input into the substation, and the electric energy metering is completed by the incoming electric energy metering device; the electric energy is output to the substation through one or more outgoing lines after being transformed, and the electric energy metering is completed by one or more outgoing electric energy metering devices, specific:

[0050] The substation is connected with at least one error standard, and each electric energy metering device collects electric energy related data of its own line, and reports the electric energy related data to the overall error calculation device.

[0051]...

Embodiment 2

[0077] like figure 1 Shown is a method and device method for metering error and variable loss self-test provided by the embodiment of the present invention, which is characterized in that the method includes at least one electric energy metering device with known overall error as an error standard, incoming electric energy A metering device, an outgoing electric energy metering device and a transformer, wherein electric energy is input into the transformer from the incoming line, and the electric energy metering is completed by the incoming electric energy metering device; the electric energy is output through one or more outgoing lines after being transformed, and is One or more outgoing electric energy metering devices complete electric energy metering, specifically:

[0078] In step 201, at least one error standard is connected to the input terminal and / or output terminal of the transformer.

[0079] Wherein, each electric energy metering device includes at least one error...

Embodiment 3

[0106] This embodiment describes how to solve the overall error and variable loss of each electric energy metering device in the substation involved in the first embodiment from the perspective of calculation principles and calculation methods. In this embodiment, the overall error calculation device has received the electric energy data reported by each electric energy metering device, and has stored enough electric energy data for a long enough time, and its calculation principle and process are specifically described as follows:

[0107] According to the principle that the incoming electric energy in a substation is equal to the sum of the outgoing electric energy and the transformation loss of the substation, as figure 2 Specifically, the following steps are shown:

[0108] In step 301, the electric energy data recorded by the incoming line electric energy metering device and the electric energy data recorded by the outgoing line electric energy metering device within a s...

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Abstract

The invention is applicable to the technical field of electric energy measurement, and provides a measurement error and transformer loss self-measurement method and device. The method comprises at least one an electric energy measurement device with the global error being known, an incoming line electric energy measurement device, an outgoing line electric energy measurement device and a transformer, wherein the electric energy measurement device with the global error being known acts as an error standard device; electric energy is inputted into the transformer through an incoming line, and electric energy measurement is performed by the incoming line electric energy measurement device; and the electric energy passes voltage transformation and is outputted through one or more outgoing lines, and electric energy measurement is performed by one or more outgoing line electric energy measurement devices. According to the embodiment of the invention, an error standard device with the global error being known is introduced, the error standard device is further connected to a substation equipped with a plurality of electric energy measurement devices, and the global error and the transformer loss of each electric energy measurement device are solved by using an energy relation that incoming line electric energy passing the transformer loss is equal to the sum of the outgoing line electric energy.

Description

technical field [0001] The invention belongs to the technical field of electric energy metering, and in particular relates to a method and device for self-testing of metering error and variable loss. Background technique [0002] Substation is a power supply method and equipment that is used more and more. The following two issues are very important for substations: 1. The accuracy of the electric energy metering device involves the economic interests of both buyers and sellers of electric energy. It is an important task to find out the error of electric energy measurement. 2. Transformer loss in substation (hereinafter referred to as "transformation loss") is related to energy saving and evaluation of substation operation status, and is a matter of great concern to the power sector. At the same time, accurate drop-side quasi-electric energy measurement error (hereinafter referred to as "error test") and variable loss is a technically difficult task. In particular, the rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04G01R27/26
Inventor 侯飞侯铁信
Owner 侯飞
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