Automatic test device and method for reliability of smart electric energy meter under instantaneous voltage interruption
A technology of automatic test device and smart electric energy meter, which is applied in the direction of measuring device, measuring electric variable, instrument, etc., can solve the problems of cumbersome operation and hard to find
Active Publication Date: 2016-08-17
STATE GRID CORP OF CHINA +2
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Problems solved by technology
At present, there is no special automatic test method to test this situation. The general test method is not only cumbersome to operate, but also difficult to find
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[0024] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0025] From figure 1 It can be seen that the automatic test device for the reliability of the intelligent electric energy meter of the present invention under the condition of instantaneous voltage interruption includes an automatic test controller, a programmable logic controller PLC, an AC contactor K and no less than two tested intelligent electric energy meters. surface. The automatic test controller is connected to the programmable controller PLC through the RS232 or TCP / IP interface, and connected to the tested smart energy meter through the RS485 interface; the programmable controller PLC is connected to the AC contactor K through the control signal interface. The watt-hour meters to be tested with voltage loops connected in parallel are c...
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The invention relates to an automatic test device and method for the reliability of an intelligent electric energy meter under instantaneous voltage interruption, including an automatic test controller, a programmable logic controller PLC, an AC contactor and no less than two tested intelligent electric energy meters. Electric energy meter, wherein the automatic test controller is a computer device with automatic test software and a communication interface. The automatic test controller is connected to the programmable controller PLC through the RS232 or TCP / IP interface, and connected to the tested smart energy meter through the RS485 interface; the programmable controller PLC is connected to the AC contactor through the control signal interface. The watt-hour meters to be tested with voltage loops connected in parallel are connected in series with the AC contactor K. The automatic test controller controls the programmable logic controller PLC to repeatedly control the AC contactor K to be turned on and off according to various different time intervals set, so as to realize frequent power-on and disconnection of the smart energy meter under inspection in various different time intervals. Power failure: The automatic test controller evaluates the reliability of the smart energy meter under inspection under instantaneous voltage interruption by detecting and comparing the operating data of the detected smart energy meter before and after frequent power-on and power-off.
Description
technical field [0001] The invention relates to an automatic test method for detecting whether the intelligent electric energy meter processing mechanism is reliable under the condition of instantaneous voltage interruption of the intelligent electric energy meter, and belongs to the technical field of intelligent electric energy meter detection. Background technique [0002] Voltage interruption is a kind of power quality problem. When the effective value of voltage drops to close to zero and lasts for a period of time, it is called voltage interruption. For the magnitude of the voltage drop, the IEC defines "close to zero" as "less than 1% of the rated voltage", and the IEEE defines it as "less than 10%". The three major international standards define the types of voltage interruptions according to their duration, as shown in Table 1 below: [0003] Table 1 Definition of voltage interruption type duration [0004] [0005] The cause of the voltage interruption may be ...
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IPC IPC(8): G01R35/04
Inventor 徐晴纪峰田正其穆小星鲍进周超
Owner STATE GRID CORP OF CHINA