Portable electric energy meter wiring simulator
A technology of electric energy meter and simulator, which is applied to instruments, simulators, space navigation equipment, etc., can solve the problem of not being able to provide training places and equipment, and achieve the effects of low manufacturing cost and convenient use.
Active Publication Date: 2018-09-04
DEYANG POWER SUPPLY COMPANY STATE GRID SICHUAN ELECTRIC POWER +1
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Problems solved by technology
In order to improve the marketing personnel's ability to analyze and judge the wrong wiring of the electric energy meter, it is necessary to use the meter to practice on the spot, measure the voltage and current phase relationship input to the electric energy meter under the wrong wiring state, judge the wrong wiring type, and calculate the correction coefficient, but the general power supply branch Such training places and equipment cannot be provided
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[0030] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.
[0031] In one embodiment, the portable electric energy meter wiring simulator includes:
[0032] The voltage phase conversion circuit is used to output the other two-phase voltages with a phase difference of 120° from the single-phase voltage through the single-phase voltage. The principle of its three-phase voltage generation is as follows: figure 1 Shown: The three-phase voltage is a sinusoidal voltage with three phases with a mutual difference of 120°. The single-phase voltage is converted into a three-phase voltage by phase shifting; although the phase shifting range of the phas...
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The invention discloses a portable electric energy meter wiring simulator. The simulator comprises a voltage phase conversion circuit which is used for outputting another two-phase voltage through single-phase voltage, wherein the phase difference between another two-phase voltage and the single-phase voltage is 120 degrees. The voltage phase conversion circuit comprises a first step-down circuit,a first phase shift circuit, a first inverter circuit, a first power amplifier circuit, a first boost circuit, a second phase shift circuit, a second inverter circuit, a second power amplifier circuit and a second boost circuit. The first step-down circuit, the first phase shift circuit, the first inverter circuit, the first power amplifier circuit and the first boost circuit are connected in sequence. The second phase shift circuit, the second inverter circuit, the second power amplifier circuit and the second boost circuit are connected in sequence. The input end of the second phase shift circuit is further connected with the output end of the first inverter circuit. The simulator further comprises a three-phase current generating module which is used for generating three-phase alternating current through single-phase voltage. The three-phase current generating module comprises at least a second step-down circuit, a shaping circuit and a single chip microcomputer, wherein the secondstep-down circuit, the shaping circuit and the single chip microcomputer are sequentially connected. According to the invention, three-phase voltage and current can be provided at a teaching site simply with a single-phase power supply; various possible wrong wiring forms of an electric energy meter are simulated; and students can conveniently learn from practical applications.
Description
technical field [0001] The invention relates to a simulation device, in particular to a portable electric energy meter wiring simulator. Background technique [0002] Three-phase four-wire energy meters are commonly used in low-voltage power distribution networks for three-phase electric energy measurement. The correctness of the wiring directly affects the accuracy of measurement and the economic benefits of power production, and its important performance is abnormal line loss. In order to improve the marketing personnel's ability to analyze and judge the wrong wiring of the electric energy meter, it is necessary to use the meter to practice on the spot, measure the voltage and current phase relationship input to the electric energy meter under the wrong wiring state, judge the wrong wiring type, and calculate the correction coefficient, but the general power supply branch Such training places and equipment cannot be provided. Contents of the invention [0003] The inven...
Claims
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Login to View More IPC IPC(8): G09B9/00G09B23/18
Inventor 旷良富李立军周旋
Owner DEYANG POWER SUPPLY COMPANY STATE GRID SICHUAN ELECTRIC POWER