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Integral on-line verification method of high-voltage electric energy metering device

A technology of high-voltage electric energy and metering devices, which is applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of increased burden on power supply reliability, affecting users' normal power consumption, and poor data reliability, etc., to achieve high reliability Effect

Active Publication Date: 2018-12-21
山东计保电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two main defects of this verification method: 1. On-site operation is required during the verification, and the power must be cut off, which affects the normal power consumption of users; 2. The data source is limited to the on-site verification period, and the data reliability is not good
According to the current domestic power supply quality and reliability requirements, the average annual power outage time of users should not be 3.5 hours, but the power supply level in most parts of my country can only realize that the annual average power outage time of users does not exceed 9 hours, except for accidental power outages, high-voltage electric energy meters On-site verification increases the burden on power supply reliability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The overall online verification method for the high-voltage electric energy metering device described in this embodiment, the method includes:

[0031] The overall on-line verification method of the high-voltage electric energy metering device, the method includes:

[0032] S1: The wireless meter reading terminal sends the power consumption data of the high-voltage electric energy metering device to the metering master station, and the metering master station generates and stores the load curve according to the received power consumption data;

[0033] S2: Define N fixed verification periods and M load verification periods respectively according to the daily time period and load curve, where M and N are both positive integers greater than 1;

[0034] S3: The high-voltage electric energy metering device to be calibrated is connected in series with the current line of the standard meter, and the high-voltage electric energy metering device to be calibrated is connected in...

Embodiment 2

[0042] In this embodiment, on the basis of Embodiment 1, the number of load segments and fixed verification periods is changed, among which, five load segments are set, which are respectively high load segment, medium-high load segment, medium load segment, medium-low load segment and For the low load segment, the load verification period corresponding to the high load segment is 10 minutes before and after the time corresponding to the highest load value, and the load verification period corresponding to the medium and high load segment is 0.75*10 minutes before and after the time corresponding to the highest load value. Minutes, the load verification period corresponding to the medium load segment is 0.5 * 10 minutes before and after the time corresponding to the highest load value, and the load verification period corresponding to the medium and low load segment is 0.25 * 10 minutes before and after the time corresponding to the highest load value , the load verification per...

Embodiment 3

[0044] This embodiment adds new steps on the basis of embodiment 1, specifically:

[0045] S61: Compare the load of the checked high-voltage electric energy metering device in each time period obtained in step S4 with the load in each time period defined in step S2 when the checked high-voltage electric energy metering device was installed on the first day, one by one, if there are two If the compared loads are in the same load range, then further compare the measurement errors of the corresponding high-voltage electric energy metering devices under the two loads. If the difference between the two does not exceed the preset value, the high-voltage electric energy metering device to be calibrated is defaulted.

[0046] S62: Compare the load of the checked high-voltage electric energy metering device obtained in step S4 in each time period with the load of the checked high-voltage electric energy meter in each time period during previous calibrations one by one. If there are two ...

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PUM

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Abstract

The invention relates to the technical field of on-line verification of a high-voltage electric energy metering device with 6-35kV or above, in particular to an integral on-line verification method ofthe high-voltage electric energy metering device. The integral on-line verification method comprises the steps of S1, receiving metering data of a verified high-voltage electric energy metering device and generating a load curve by a metering main station; S2, respectively defining a fixed verification time frame and a load quantity verification time frame according to time period each day and the load curve; S3, connecting a standard meter in series with a high-voltage electric energy meter at a high-voltage side, and receiving power utilization data of the verified high-voltage electric energy metering device and a standard meter at each fixed verification time frame and each load quantity verification time frame by the metering main station; S4, calculating metering increment of the standard meter and the verified high-voltage electric energy metering device in each time frame by the metering main station according to the received data; and S5, calculating a difference value between the metering increment of the standard meter and the metering increment of the verified high-voltage electric metering device in each time frame. By the integral on-line verification method, multi-time frame verification of a high-voltage transformer can be achieved without power failure, high reliability is achieved, and normal power utilization of a user is guaranteed.

Description

technical field [0001] The invention relates to the technical field of on-line verification of high-voltage electric energy metering devices of 6-35kV and above; in particular, it relates to an overall on-line verification method of high-voltage electric energy metering devices. Background technique [0002] The current traditional high-voltage electric energy metering device is composed of multiple electromagnetic voltage transformers + multiple electromagnetic current transformers + energy meters, etc., which is prone to ferromagnetic resonance, poor safety, high energy consumption, and cannot prevent electricity theft. Problems and defects such as large changes in error characteristics and difficult to determine. The high-voltage electric energy meter integrates the high-voltage voltage sensor, high-voltage current sensor, high-voltage source device, intelligent electric energy metering board, GPRS and other communication units, and intelligent metering software, and is d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 荣博荣潇李敏李海王伟
Owner 山东计保电气有限公司