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Statistical method for voltage qualification rate of electric energy meter

A technology of voltage pass rate and statistical method, applied in the field of smart electric energy meters, can solve the problems that the quality of electric power products cannot be objectively evaluated, it is not conducive to social fairness and consumer rights, and the standards are not unique, so as to achieve standardization and standardization, Improving the level of power management and improving the effect of power quality

Inactive Publication Date: 2018-04-20
WAHLAP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Standards are not unique or unscientific, resulting in the inability to objectively evaluate the quality of power products, which is not conducive to social fairness and consumer rights

Method used

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  • Statistical method for voltage qualification rate of electric energy meter
  • Statistical method for voltage qualification rate of electric energy meter
  • Statistical method for voltage qualification rate of electric energy meter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] like figure 1 The shown embodiment 1 is a statistical method for the qualified rate of electric energy meter voltage, including MCU1, metering unit circuit 2, voltage and current sampling circuit 3, memory 4 and communication unit circuit 5; It is electrically connected with the communication unit circuit, and the voltage and current sampling circuit is electrically connected with the metering unit circuit; as figure 2 shown, including the following steps:

[0036] Step 100, setting the upper limit and lower limit of the voltage value

[0037] Set the voltage qualified upper limit, voltage qualified lower limit, voltage assessment upper limit and voltage assessment lower limit of the electric energy meter voltage value;

[0038] Step 200, calculate the total monitoring time and the limit time

[0039] Step 201, the metering unit circuit collects the split-phase voltage and the split-phase current through the voltage and current sampling circuit;

[0040] Step 202, ...

Embodiment 2

[0088] Embodiment 2 includes all structures and steps of Embodiment 1, and the relationship diagram between phase-splitting voltage U and time t in Embodiment 2 is as follows Figure 4 As shown, the specific calculation process is as follows:

[0089] From t1 to t7, the voltage value of phase A voltage is within the acceptable range from t1 to t3, exceeds the qualified upper limit of voltage from t3 to t4, exceeds the upper limit of voltage assessment from t4 to t5, and is within the qualified range from t5 to t7. The voltage value of the voltage is within the qualified range, the voltage value of the C-phase voltage exceeds the lower limit of the voltage assessment at the time from t1 to t2, exceeds the lower limit of the qualified voltage at the time from t2 to t6, and is within the qualified range at the time from t6 to t7. The total monitoring time is (t7-t5)+(t4-t1), the total monitoring time of Phase B voltage is (t7-t1), the total monitoring time of Phase C voltage is (...

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Abstract

The invention discloses a statistical method for the voltage qualification rate of an electric energy meter. An MCU, a metering unit circuit, a voltage and current sampling circuit, a memory and a communication unit circuit are arranged. The voltage and current sampling circuit collects split-phase voltage and split-phase current data and transmit the data to the metering unit circuit; the MCU controls total time of split-phase voltage monitoring, total time of combined-phase voltage monitoring, split-phase voltage overrun time, and combined-phase voltage overrun time of the metering unit circuit, obtains a split-phase voltage qualification rate, a combined-phase voltage qualification rate, a split-phase voltage transfinite rate, and a combined-phase voltage transfinite rate, and carries out data storage and remote management. The statistical method has the following beneficial effects: standardization and standardization of the statistical method for the voltage qualification rate ofan electric energy meter are realized; the power quality is improved; the level of electric energy management is enhanced; and the fundamental interests of both sides of the power supply are protected.

Description

technical field [0001] The invention relates to the technical field of smart electric energy meters, in particular to a statistical method for realizing the standardized statistics of the qualification rate of the voltage of the electric energy meter and improving the management level of electric energy. Background technique [0002] As the smart terminal and data entry of the smart grid, the smart energy meter is no longer a traditional energy meter. In order to adapt to the use of smart grid and new energy, in addition to the basic measurement functions of the traditional energy meter, the smart energy meter also has two-way multi- Multi-application functions such as rate metering, user-side control, intelligent interaction, power grid monitoring, and power quality statistics. Since DL / T645-1997 has not been formally revised, and DL / T645-2007 was released late, the intermediate electronic technology is developing rapidly, and the function expansion of electric energy meter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 沈维曾招辉
Owner WAHLAP TECH CO LTD
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