Test device and method for simulating field electric energy measurement

A technology of electric energy measurement and test device, applied in the direction of measurement device, measurement of electrical variables, instruments, etc., can solve the problem of lack of dynamic quantification, and achieve the effect of reducing links

Active Publication Date: 2010-03-31
HEILONGJIANG ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The comprehensive error of the electric energy metering device already has quantified technical means, but due to reasons such as on-site safety and guaranteed power supply of the line, it is not yet possible to dynamically quantify it.

Method used

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  • Test device and method for simulating field electric energy measurement
  • Test device and method for simulating field electric energy measurement

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Experimental program
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Embodiment Construction

[0012] Below in conjunction with accompanying drawing, illustrate the concrete operation method of the present invention:

[0013] 1. Actual load operation steps:

[0014] (1) According to the need, connect the required test load to the line;

[0015] (2) Determine the selected measurement method according to the selected measurement method. When the three-phase four-wire measurement method is selected, it is recommended to use the line measured by the meter 2 first. When the three-phase three-wire measurement is selected, the current connection of the meter 2 Adjustments should be made, and meters 2 and 3 should be replaced with phenotypes;

[0016] (3) Confirm the wiring method according to the selected metering method (check that the line current transformer is not open and the voltage transformer is not short circuit);

[0017] (4) Select the load switch as the real load;

[0018] (5) Turn on the computer and set the corresponding wiring mode in the software;

[0019] ...

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Abstract

The present invention provides a test device and method for simulating field electric energy measurement.The device for simulating field electric energy measurement is a novel simulating device designed according to the state electric energy meter field standard and DL/T448-2000, includes a real load portion and a virtual load portion in principle.The real load portion is composed of current voltage transformer, second wiring thereof, and electric energy meter, is a single bus double loop, can simulate various real wirings in the field, thus ensuring the accuracy and reliability of the electric energy measurement, and avoiding bringing hidden trouble to the safe operation of the power system.The virtual load is composed of three-phase program control test power supply and voltage, and current wiring switch box, has the characteristics of stability, strong function, easy use and the like, can be used by power supply department, metering department, school and training center for explaining practical phenomena such as false wiring of three-phase three-wire, three-phase four-wire active and reactive electric power meters to students, making the teaching closer to the practical work.

Description

technical field [0001] The invention relates to a test device and method for simulating on-site electric energy measurement. Background technique [0002] Electric energy measurement has become an important link in the commercial operation of the power system because it involves key issues such as energy trade settlement. The accuracy, rationality and reliability of electric energy measurement are directly related to the direct interests of power generation, power supply and power consumption enterprises. In recent years, with the gradual emergence of some new electricity loads, some new problems in electric energy measurement have been brought about, such as: the electric railway traction substation power supply line supplies power to the three-phase system B and C single-phase, resulting in the line The electric energy added by the electric energy meters on both sides is not uniform. Another example: Some primary transformers have three input reactors for the main transfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04
Inventor 孙福军兰公煜范志刚陈岳姜德胜
Owner HEILONGJIANG ELECTRIC POWER RES INST
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