Device for verifying non-gateway metering generator outlet voltage transformer
A technology for exporting voltage and transformers, applied in measuring devices, measuring electrical variables, instruments, etc., can solve problems such as difficulty in calibration, and achieve the effect of improving calibration efficiency and convenient calibration
Inactive Publication Date: 2016-08-10
STATE GRID CORP OF CHINA +3
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Problems solved by technology
[0003] In non-gateway metering, there are many types of voltage at the generator outlet. Preliminary statistics include 10kV, 13.8kV, 15kV, 15.75kV, 18kV, 20kV, 22kV, 24kV, etc. When calibrating its voltage transformer, it is necessary A standard voltage transformer with the same transformation ratio as the transformer to be calibrated, so multiple standard voltage transformers are required, which brings difficulties to the calibration
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[0014] The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0015] Such as figure 1 As shown, a device for calibrating non-gateway metered generator outlet voltage transformers includes a standard voltage transformer 2, the primary side of the standard voltage transformer 2 and the primary side of the measured generator outlet voltage transformer 6 The secondary side of the standard voltage transformer 2 is cascaded with the voltage ratio standard 3 phases with adjustable ratio, and the secondary side of the voltage transformer 6 at the outlet of the generator under test is connected with the transformer tester 5 and the voltage load respectively. The box 4 is connected, and the voltage ratio standard 3 is...
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The invention discloses a device for verifying a non-gateway metering generator outlet voltage transformer. The device comprises a standard voltage transformer. The device is characterized in that the primary side of the standard voltage transformer is connected with the primary side of a measured generator outlet voltage transformer. The secondary side of the standard voltage transformer is cascaded with a voltage ratio standard phase of which the transformation ratio is adjustable. The secondary side of the measured generator outlet voltage transformer is respectively connected with a transformer tester and a voltage load box. The voltage ratio standard phase is connected with the transformer tester. The standard voltage transformer is cascaded with the voltage ratio standard phase of which the transformation ratio is adjustable so that error testing of all the generator outlet voltage transformers of which the voltage level is in the range of 10kV-25kV and secondary voltage is 100V can be realized, error of the generator outlet voltage transformer can be accurately and conveniently verified without frequent replacement of equipment, and the verification efficiency of the generator outlet voltage transformer can be enhanced.
Description
technical field [0001] The invention relates to a device for checking a non-gateway metering generator outlet voltage transformer. Background technique [0002] Accurate measurement of the output of generator outlet electric energy is the common demand of power generation enterprises and power testing departments, and is the basis for ensuring fairness and justice in measurement. In order to ensure the accuracy of generator outlet voltage transformers, standard voltage transformers with higher accuracy levels are required Verify it. [0003] In non-gateway metering, there are many types of voltage at the generator outlet. Preliminary statistics include 10kV, 13.8kV, 15kV, 15.75kV, 18kV, 20kV, 22kV, 24kV, etc. When calibrating its voltage transformer, it is necessary A standard voltage transformer with the same transformation ratio as the transformer to be calibrated requires multiple standard voltage transformers, which brings difficulties to the calibration. Contents of ...
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Login to View More IPC IPC(8): G01R35/02
CPCG01R35/007G01R35/02
Inventor 包玉树李军吴剑孙军胡利峰肖睿祺
Owner STATE GRID CORP OF CHINA