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Error calibration device and system and error transfer system and method of full digital electric energy meter

An all-digital, power error technology, used in measuring devices, measuring electrical variables, instruments, etc., can solve problems such as time-consuming, labor-consuming and electricity-consuming

Active Publication Date: 2013-03-27
陈江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Invention patent "Error value verification device and error value transmission method of digital electric energy meter" (Patent No. 201010259309.4) and utility model patent "Error value verification device and error value transmission system of digital electric energy meter" (Patent No. 201020500189.8) Although the above-mentioned problems have been solved, when the full digital electric energy meter is verified, it is still necessary to use the bulky and power-consuming electric energy meter verification power supply for verification, which is time-consuming, laborious and power-consuming. In the A / D sampling link, additional errors will be generated due to the asynchrony of upward tracing and downward verification

Method used

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  • Error calibration device and system and error transfer system and method of full digital electric energy meter
  • Error calibration device and system and error transfer system and method of full digital electric energy meter
  • Error calibration device and system and error transfer system and method of full digital electric energy meter

Examples

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Embodiment 1

[0023] Embodiment 1. An error verification device for an all-digital electric energy meter

[0024] The specific structure of the error verification device of the full-digital electric energy meter of this example is as follows: Figure 1 ~ Figure 2 Jointly shown, figure 1 Shown is a schematic diagram of the error verification device structure of the full digital electric energy meter, as shown in figure 1 As shown, the error verification device 1 of the all-digital electric energy meter in this example consists of a traditional electric energy meter verification power supply 2 outputting three-phase AC voltage and three-phase alternating current, a traditional pulse-type electric energy error comparator or a new type with conforming Various high-level standard digital communication protocols include the power / energy information digital stream input interface, the power error comparator 4, the modular standard power meter 3, the system software, or the shell. In this example...

Embodiment 2

[0025] Embodiment 2. Error verification device for full digital electric energy meter

[0026] The specific structure of the error verification device of the full-digital electric energy meter in this example can be Figure 1 ~ Figure 2 etc. jointly show that the difference between the error checking device of the all-digital watt-hour meter of this example and the error checking device of the full-digital watt-hour meter of embodiment one has: 1. the conventional output three-phase AC voltage and three-phase AC Electric energy meter verification power supply 2 for current is a three-phase AC power supply with relatively small output power of three-phase AC voltage and three-phase AC current, as long as the output power of the power supply can drive the modular standard energy meter. 2. This example has a traditional pulse-type power error comparator and / or a new type of power error comparator with a digital stream input interface that complies with various high-level standard...

Embodiment 3

[0027] Embodiment 3. Error verification device for all-digital electric energy meter

[0028] The specific structure of the error verification device of the full-digital electric energy meter in this example can be Figure 1 ~ Figure 2 etc. jointly show that the difference between the error checking device of the full-digital electric energy meter of this example and the error checking device of the full-digital electric energy meter of embodiment one and embodiment two has: The communication protocol is as follows: MODBUS and so on. 2. The specific standard communication protocol of this example is: MODBUS / TCP or SERCOSIII, etc. 3. The signal conditioning module 5 in this example is a resistor divider, or an instrument current transformer, etc. 4. The model of the A / D conversion module 6 in this example is AD7663 or the like. 5. The signal processing module 8 in this example is FPGA: the model is XC3S250E, AGL250FGG144I, etc. 6. The model of the digital communication modu...

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Abstract

The invention relates to an error calibration device and system and an error transfer system and method of a full digital electric energy meter and belongs to the technical field of error measurement of the full digital electric energy meter. Four technical schemes including the error calibration device, the error calibration system, the error transfer system and the error transfer method are provided. The calibration device comprises a three-phase calibration power supply, an electric energy error comparer and an analog-digital standard electric energy meter. The calibration system comprises the calibration device and a calibrated full digital electric energy meter. The error transfer system and method comprises error downward transfer and upward tracing and is characterized in that a power supply and error information storage mechanism is arranged in the analog-digital standard electric energy meter; a calibration power supply is utilized when upward tracing is performed; and the power supply and the error information of the storage mechanism are utilized to perform calibration when the downward transfer or calibration is performed; and a heavy calibration power supply is not needed, so that time, labor and electricity can be saved, and the calibration accuracy is high. The error calibration device and system and the error transfer system and method of the full digital electric energy meter are advanced in design concept, reasonable in device structure, convenient to operate and practical, are independent innovation achievements in the field of digital electric energy metering, make development and contribution to improve accuracy and modernization level of electric energy metering in China, and are worthy to be applied and popularized.

Description

1. Technical field [0001] The error verification device and system of the all-digital electric energy meter and the error transmission system and method disclosed by the present invention belong to the field of digital electric energy meter error measurement, and specifically relate to the error verification device of the all-digital electric energy meter and the error verification system of the all-digital electric energy meter And the technical content of the four aspects of the error transfer system of the full digital electric energy meter and the error transfer method of the full digital electric energy meter. 2. Background technology [0002] In order to meet the needs of the digital development of power systems, fully digital power systems based on communication protocols such as IEC61850 have been more and more used. Correspondingly, a full-digital electric energy metering system has emerged as the times require. The core of the all-digital electric energy metering ...

Claims

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Application Information

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IPC IPC(8): G01R35/04
Inventor 陈江
Owner 陈江
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