A measurement stability test system and test method for electric energy meters
A technology of stability testing and testing methods, applied in the measurement of electrical variables, measuring devices, instruments, etc., can solve the problem that the measurement stability of the electric energy meter under test cannot be tested, the test method cannot simulate various conditions, and the measurement error of the electric energy meter Changes and other issues to achieve good test results, improve test efficiency, and high measurement accuracy.
Active Publication Date: 2018-09-11
国网山东省电力公司营销服务中心(计量中心) +2
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Problems solved by technology
[0003] However, in actual use, the electric energy meter is installed on site, the environment is complex, it needs to carry various loads such as capacitive load and inductive load, and it operates in various operating states such as light-load operation and heavy-load operation. changes, the measurement error of the energy meter will also change
[0004] Existing test methods cannot simulate various conditions of actual field operation, so it is impossible to test the metering stability of the measured electric energy meter during field use
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[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0032] Such as figure 1 , a measurement stability test device, including a power supply unit, a measurement acquisition unit, a measurement verification unit and a load unit;
[0033] The power supply unit has a power interface and a voltage regulator connected to the power interface through a circuit breaker; the voltage regulator has a selection switch for selecting the voltage regulator as manual mode or automatic mode, and the voltage regulator also has an output terminal and control terminal, the control terminal of the voltage regulator is connected with the industrial computer; before adjustment, select the adjustment mode through the selection switch, and the operator can directly adjust the voltage regulator manually, or adjust the voltage through the industrial computer. Indirect adjustment of the voltage regulator; the output terminal of the...
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The invention discloses a metering stability testing system for electric energy meter and testing method thereof, including a power supply unit interface configured with a power supply interface and a voltage regulator in connection with the power supply interface through a circuit breaker and an electric energy meter support configured with a meter to be tested. The meter support is provided with a communication interface connected with the to-be-tested electric energy meter, an output interface connected with the communication interface, and a sliding groove cooperating with the bottom of the to-be-tested electric energy meter as well as a rotation clamped metering acquisition unit that has the to-be-tested electric energy meter fixedly arranged in the sliding groove. The meter support is also configured with an industrial control computer and an error instrument connected with industrial control computer. The error instrument can be connected with the output end of all types of standard electric energy meters and is interfaced to the output end of the electric energy meters. The industrial control machine controls the metering calibration unit and the loading unit of the voltage regulator simultaneously.
Description
technical field [0001] The invention relates to a measurement stability test system for electric energy meters and a test method thereof. Background technique [0002] Before the meter is put into use, it is necessary to test and consider the measurement stability of the meter. The existing test method is to verify the accuracy of electric energy measurement in the laboratory with a virtual power stable load before leaving the factory. [0003] However, in actual use, the electric energy meter is installed on site, the environment is complex, it needs to carry various loads such as capacitive load and inductive load, and it operates in various operating states such as light-load operation and heavy-load operation. Changes, the measurement error of the energy meter will also change. [0004] Existing test methods cannot simulate various conditions of actual operation on site, so it is impossible to test the metering stability of the measured electric energy meter during fie...
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IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 代燕杰陈祉如王平欣张志李琮琮杜艳朱红霞
Owner 国网山东省电力公司营销服务中心(计量中心)
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