2,400kV/30mA movable partial-discharge-free direct-current high-voltage generator

Abstract

The invention discloses a 2,400kV / 30mA movable partial-discharge-free direct-current high-voltage generator. The 2,400kV / 30mA movable partial-discharge-free direct-current high-voltage generator comprises an alternating current linear variable-frequency power supply, a boosting transformer, a voltage-multiplying assembly and a voltage-equalizing ring which are connected in sequence, wherein the alternating current linear variable-frequency power supply is used for performing three-stage amplification on a sine wave signal and then outputting a variable-frequency power signal; the boosting transformer is used for further boosting the variable-frequency power signal into a high-voltage alternating current power signal; the output end of the voltage-multiplying assembly is connected with one end of a high-frequency chocked flow inductor; the other end of the high-frequency chocked flow inductor is connected with the grounded end of the voltage-multiplying assembly through a filtering capacitor; nodes of the high-frequency chocked flow inductor and the filtering capacitor serve as the high-voltage output end and the grounded end of the voltage-multiplying assembly to access a voltage measuring module; the signal output end of the voltage measuring module is connected with the signal input end of an upper computer; the control signal output end of the upper computer is connected with the control signal input end of the alternating current linear variable-frequency power supply. The 2,400kV / 30mA movable partial-discharge-free direct-current high-voltage generator has the advantages that the size and the weight of a device can be reduced, and meanwhile, the overall partial discharge magnitude level of the device is controlled; 2,400kV / 30mA direct current output can be completed.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a 2400kV, 30mA mobile non-partial discharge DC high voltage generator. Background technique [0002] UHV DC transmission technology has the characteristics of large power transmission capacity and long distance, and is one of the key technologies for large-capacity and long-distance power transmission. UHV equipment, especially UHV power transformers, will gradually adopt an engineering construction mode of on-site assembly and on-site testing due to their large volume and weight. This puts forward higher requirements for the field test of large electric equipment. In this context, it is of great significance to improve the test methods related to DC power transmission and transformation projects, especially to improve the capabilities of DC corona test and DC withstand voltage test, to promote UHV DC power transmission technology. [0003] At present, portable DC high-...

AI Technical Summary

Problems solved by technology

In the case of ensuring the capacity of the equipment, the volume of the DC high voltage generator body is too large, the partial discharge capacity exceeds the standard, and the leakage current is too large, all of which restrict the development of field test technology.

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