Voltage division ratio calibration platform of DC voltage divider

Abstract

The invention discloses a voltage division ratio calibration platform of a DC voltage divider. The calibration platform comprises a first digital multimeter. The first digital multimeter is used for collecting output signals of a standard voltage divider. The second digital multimeter is used for collecting output signals of a measured voltage divider. The output ends of the first digital multimeter and the second digital multimeter are communicatively connected with an industrial control integrated machine. An output end of the industrial control integrated machine is connected to an input end of a trigger source, and an output end of the trigger source is respectively connected with the input ends of the first digital multimeter and the second digital multimeter, so that the first digital multimeter and the second digital multimeter synchronously collect data, and the industrial control integrated machine processes the collected data. The calibration platform synchronously collects the output signals of the standard voltage divider and the measured voltage divider through two digital multimeters, and then processes the data collected by the two digital multimeters through the industrial control integrated machine, so that large amount of manpower is saved, and data processing accuracy is high, stability is good, and functions are complete.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a voltage division ratio calibration platform for a DC voltage divider. Background technique [0002] my country is the country with the largest number of DC transmission projects, the longest transmission line, and the highest transmission voltage level in the world. The DC voltage divider is an indispensable main equipment in the DC transmission system. High-voltage DC voltage divider is an instrument used to measure DC high voltage in power systems and electrical and electronic equipment manufacturing departments. The upper end of the pressure equalizing cover is a high voltage end, which can be directly connected to the high voltage to be measured, and the lower end has a special grounding end for grounding. Use a special cable to connect the high voltage divider and low voltage display instrument, and select the corresponding voltage and range to start. Measurement....

AI Technical Summary

Problems solved by technology

It is difficult to ensure the synchronization of manual readings. Two digital multimeters display data at the same time, reading once per second. Manual observation is affected by many uncertain factors and it is difficult to ensure accuracy.

After the measurement data is collected, it needs to be sorted out, calculated and analyzed for errors. Manually entering information takes a long time and cannot guarantee accuracy

[0004] Common calibration software can realize preliminary reading, recording and calculation functions. However, due to the low precision of the DC voltage meter used and the low degree of program optimization, its accuracy is difficult to be guaranteed. At the same time, the data storage function still needs to be improved.

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