Capacitive graded compact impulse voltage generator

Abstract

The invention discloses a capacitive graded compact impulse voltage generator comprising a sealing shell, an arc-shaped cover plate, a basin-type insulator and a lead-out wire, and a charging transformer, a charging capacitor, a first high-voltage silicon stack, a second high-voltage silicon stack, a first front-end pulse capacitor, a second front-end pulse capacitor, a first front-end multipolar ignition ball gap, a second front-end multipolar ignition ball gap, a first rear-end pulse capacitor, a second rear-end pulse capacitor, a first rear-end multipolar ignition ball gap, a second rear-end multipolar ignition ball gap, a first wave head resistor, a second wave head resistor, a third wave head resistor, a fourth wave head resistor, a first wave tail resistor, a second wave tail resistor, a third wave tail resistor, a fourth wave tail resistor, a first charging resistor, a second charging resistor, a third charging resistor and a fourth charging resistor which are arranged in the sealing shell. The internal space of the sealing shell is effectively utilized so that the dimension requirement for the sealing shell is further reduced.

Description

Technical field [0001] The invention relates to the technical field of high-voltage testing and insulation, in particular to a capacitor graded compact impulse voltage generator. Background technique [0002] In the prior art, the impulse voltage generator generally adopts an open tower structure, and the impulse test voltage is output through the high-voltage terminal and the overhead bus. However, due to the use of poorly insulating air as the main insulating medium, this kind of generating device is bulky, the cost of separate transportation is high, and the workload of on-site installation is large, and it is not easy to carry out on-site insulation characteristics test of substation equipment. In addition, because the device is exposed to the air, it is greatly affected by the external environment such as air pressure, temperature and humidity, and self-discharge is prone to occur, and the stability is poor. [0003] In view of the above problems, the Chinese patent with publ...

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Problems solved by technology

Since the output voltage of the high-voltage end of the impact device is very high, and the insulation distance between the high-voltage end pulse and the shell is limited, a large number of insulating pieces need to be installed, and the internal volume of the test device is small, and hoisting equipment cannot be used. Therefore, the internal frame insulation bracket, and shielding It is difficult to install and fix insulating parts and other components; moreover, after long-term operation, moisture will enter the interior, and the internal gas will be dried by a circulation drying scheme, but due to the slow diffusion of moisture in the insulation material, the gas circulation will dry the frame-type insulation bracket and high-voltage shielding Insulation dries poorly

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