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Method for forming electric energy metering simulation system and device thereof

A technology of electric energy metering and simulation system, which is applied in the direction of measuring devices, circuit devices, measuring electric variables, etc., and can solve the problems of inability to completely simulate the working conditions of electric energy meters, inability to conduct on-site verification experiments, and lack of real-time performance

Active Publication Date: 2010-08-18
CHONGQING ELECTRIC POWER RES INST
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Problems solved by technology

The problems existing in the existing technology are: for the basic theoretical research of electric energy metering, numerical calculation software is mainly used for analysis, which lacks real-time performance, cannot completely simulate the actual working conditions of electric energy meters, and cannot conduct on-site verification experiments; the comparison of electric energy meters mainly uses standard source and higher-precision standard meter, it is impossible to study the measurement theory and working principle of electric energy meter in depth; there is no special means and device for electric energy measurement simulation research

Method used

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  • Method for forming electric energy metering simulation system and device thereof
  • Method for forming electric energy metering simulation system and device thereof
  • Method for forming electric energy metering simulation system and device thereof

Examples

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example 1

[0038] Instance 1 constitutes an example of a method

[0039] The metering algorithm model library 1 consists of active power, reactive power, fundamental wave and harmonic power metering algorithms, error compensation, sampling data synchronization, window interpolation, quasi-periodic sampling algorithms, signal processing, and spectrum analysis algorithms; power metering visualization interface 2 is It is realized through GUI programming under MATLAB software platform 4.

[0040] MATLAB software platform 4 adopts the widely used numerical calculation and analysis software MATLAB7.0 version; DSPACE real-time system 5 adopts the software and hardware working platform DSPACE based on MATLAB / Simulink control system development and hardware-in-the-loop simulation, realizing the integration with MATLAB / Simulink / RTW's completely seamless connection.

[0041] The standard source model library 3, the standard source signal 6 and the GPS module 7 are optional modules in this exampl...

example 2

[0044] Example 2 Device example

example 1

[0046] (1) The actual load 10 is connected to the power supply. In the experiment, the load is 5 light bulbs with a nominal power of 100W, and the power supply is 220V AC for civilian use;

[0047] (2) The voltage and current signals of the load are respectively sent to the electric energy meter 11 and the sensor 9, wherein the electric energy meter is a single-phase electronic electric energy meter DDS148 type, and the accuracy is grade 1; the voltage sensor is LV28-P, and the current sensor is LTS25 -NP, the sensor power supply is the standard source LPS-305 of MOTECH;

[0048] (3) The voltage and current signals of the sensor 9 are sent into the signal conditioning circuit 8 (i.e. the sensor output interface circuit), and are passed into the DSPACE real-time simulation system 5 after signal processing;

[0049] (4) The DSPACE real-time simulation system 5 can simultaneously sample the voltage and current signals and send the results to the electric energy metering visualiza...

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Abstract

The invention relates to a method for forming an electric energy metering simulation system and a device thereof, which are used for real-time simulation research on reactive electric energy metering, power grid harmonics analyzing, power grid harmonics electric energy metering and signal processing in electric energy metering, energy meter comparison and energy meter performance test, and are applicable to power grid electric energy metering field to solve the problems of absence of special electric energy metering simulation research means and devices, incapability of developing electric energy metering theories, meter operating principles, comparison and the like in the above researches. The method for forming an electric energy metering simulation system is characterized by comprising the steps of constructing a metering algorithm model library, an electric energy metering visualized interface, a standard source model library, a MATLAB software platform, a DSPACE real time system, a standard source signal, a GSP module, a signal conditioning circuit, a sensor and an actual load. The formation method provides open search means for electric energy metering basic theories, and can form a visual energy meter, an electric energy metering simulation and field replaying system and an electric energy meter comparison device respectively by selecting specific modules in the electric energy simulation system.

Description

technical field [0001] The invention relates to a composition method and device of an electric energy metering simulation system, which are used for reactive electric energy metering, grid harmonic analysis, grid harmonic electric energy metering, real-time simulation research of signal processing in electric energy metering, and electric energy meter comparison, electric energy meter Performance testing, applicable to the field of grid electric energy metering. Background technique [0002] In the field of power grid energy metering, it is necessary to study reactive energy metering, power grid harmonic analysis, power grid harmonic power metering, signal processing in power metering, and carry out research on energy meter comparison and energy meter performance testing. The country has not yet formulated reactive energy measurement standards, and the basic theory of reactive energy measurement is immature. It is necessary to study the basic theory and implementation techno...

Claims

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Application Information

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IPC IPC(8): H02J3/00G01R35/04
Inventor 侯兴哲付志红张淮清郑可李春燕李胜芳
Owner CHONGQING ELECTRIC POWER RES INST
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