Dielectric loss measurement method for 220-kilovolt voltage transformer disassembly-free lead

Abstract

The invention discloses a dielectric loss measurement method for a 220-kilovolt voltage transformer disassembly-free lead. The method comprises the following steps of enabling a resonance circuit to be connected with a to-be-detected circuit in parallel, and enabling an equivalent circuit to be connected with the resonance circuit, rotating the inductance knob, observing the numerical value of theampere meter, stopping when the current is minimum, and recording as a first capacitive current, rotating the inductance knob, and when the total current of the circuit is minimum, recording to be the current of the second capacitor and the third capacitor. According to the dielectric loss measurement method for the 220-kilovolt voltage transformer disassembly-free lead, on one hand, the capacitance of the 220-kilovolt voltage transformer disassembly-free lead is accurately measured under the condition that a high-voltage lead is not disassembled by utilizing the parallel resonance characteristics of C and L, high-altitude operation is avoided, and safe operation is guaranteed; and secondly, by adopting an ampere meter and an adjustable coil L which are measured at a high-voltage end, theminimum total current can be detected when the L is adjusted, the parallel resonance of the circuit is realized, the inductance value of the L is changed by an inductance value knob, and finally, theL and a target parallel circuit generate a parallel resonance effect.

Description

technical field [0001] The invention relates to the technical field of data transmission, in particular to a dielectric loss measurement method for a 220 kV voltage transformer without removing lead wires. Background technique [0002] With the continuous development of society, data transmission is becoming more and more common. However, due to the frequent use of data transmission, data often interfere with each other during data transmission, resulting in incomplete information or incomplete information during data transmission. It is information deviation. At this time, there is an error between the data received by the receiving end and the data sent by the sending end, which affects the accuracy of the information. Secondly, because the modern age is an information age, the value of data is very large, causing some people to use The network data interception device intercepts the data transmitted on the network, so that the security and stability of the existing data t...

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Problems solved by technology

[0002] With the continuous development of society, data transmission is becoming more and more common. However, due to the frequent use of data transmission, data often interfere with each other during data transmission, resulting in incomplete information or incomplete information during data transmission. It is information deviation. At this time, there is an error between the data received by the receiving end and the data sent by the sending end, which affects the accuracy of the information. Secondly, because the modern age is an information age, the value of data is very high, causing some people to use it. The network data interception device intercepts the data transmitted on the network, so that the security and stability of the existing data transmission method can no longer meet the needs of users. Therefore, we propose a 220 kV voltage transformer without disassembly Measurement method of dielectric loss of leads

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