Power-off preventive device of portable electric energy quality monitor

A technology of power quality monitoring and power outage, which is applied in the field of electric energy, can solve problems such as power outage of the power supply of monitoring instruments, and achieve the effect of improving reliability and reducing the probability of power outage

Inactive Publication Date: 2016-01-27
ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem that the power supply of the monitoring instrument is cut off when the po

Method used

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  • Power-off preventive device of portable electric energy quality monitor

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Embodiment Construction

[0013] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0014] The anti-power outage device of the portable power quality monitoring instrument of the present invention, as shown in the accompanying drawings, includes a voltage signal acquisition line 2, a voltage sensor 3, a logic AND gate 5, a timer 7, a logic NOT gate 9, a relay 11, and a relay 19 , 220V AC power supply 14, spare 220V AC power supply 15, power adapter 16, wire 12, wire 13, wire 17, wire 20, signal wire 4, signal wire 6, signal wire 8 and signal wire 10.

[0015] The 220V AC power supply 14 is connected to the relay 19 via the wire 20, the power adapter 16 is connected to the relay 19 via the wire 12, and supplies power to the power quality monitoring instrument 1 via the wire 17, an...

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Abstract

The invention discloses a power-off preventive device of a portable electric energy quality monitor. The device can prevent the portable electric energy quality monitor from power off during long-term test, the power-off possibility of the monitor is reduced, the using reliability of the monitor is improved, and the efficiency of electric energy quality test is improved.

Description

technical field [0001] The invention relates to the field of electric energy technology, and more specifically relates to a device for preventing power failure of a portable power quality monitoring instrument. Background technique [0002] When using a portable power quality monitoring instrument for long-term power quality testing, the monitoring instrument needs to provide a stable power supply for a long time. During the test process, the monitoring instrument cannot work normally after a long period of power failure, resulting in loss of test data, resulting in untimely test work. Finish. Therefore, it is necessary to provide a device for preventing power failure of a portable power quality monitoring instrument. Contents of the invention [0003] (1) Technical problems to be solved [0004] The technical problem to be solved by the present invention is to solve the problem that the power supply of the monitoring instrument is cut off when the power quality monitori...

Claims

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Application Information

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IPC IPC(8): H02J9/06
Inventor 徐龙王金浩雷达杨超颖齐月文宋述勇杜杰吴玉龙杜慧杰张悦
Owner ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER
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