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A kind of imitation test method of high impact current

An analog test, high current technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problem of component safety not being guaranteed

Inactive Publication Date: 2016-08-24
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if an immature protection system is to be tested on site, the entire system must be put into operation, which is not only a huge test for high-power vacuum electron tubes, but also the safety of various other components in the system cannot be guaranteed.

Method used

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  • A kind of imitation test method of high impact current
  • A kind of imitation test method of high impact current

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Embodiment Construction

[0016] Taking the impulse current simulation test of the 4.6GHz / 6MW continuous wave microwave system as an example, the non-limiting examples are described as follows:

[0017] (1) Measure the ground resistance of 24 high-power klystrons in the 4.6GHz / 6MW continuous wave microwave system respectively; the high-power klystrons are 250kW continuous wave klystrons manufactured by CPI Corporation of the United States;

[0018] (2) Measure the ground resistance of 24 high-power klystron collectors in the 4.6GHz / 6MW continuous wave microwave system;

[0019] (3) The 4.6GHz / 6MW continuous wave microwave system includes 24 250kW klystrons produced by CPI Company in the United States. Combining the product manual and single-tube experiment, their tube body overcurrent safety threshold is 60mA;

[0020] (4) According to the characteristics of the above-mentioned klystron, find out that the collector overcurrent safety threshold is 9A;

[0021] (5), such as figure 1 As shown, 24 klystr...

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Abstract

The invention discloses a simulation test method for a high impact current. The simulation test method is characterized in that ground resistance and collector resistance of all high-power electron tubes in a high-power microwave system are respectively measured; according to the product features and single-tube test data of the high-power electron tubes, an overcurrent safety threshold and a collector overcurrent safety threshold of the high-power electron tubes are searched for; according to system features and the analysis result, an appropriate current test sensor is selected to be additionally installed in a system, wherein a test component is additionally installed on the current test sensor and connected with a protection system so that output of a constant current source can be adjusted; besides, features of the impact current produced in the short-circuiting process of the high-power electron tubes are simulated, and therefore the performance of the protection system is tested.

Description

technical field [0001] The invention relates to a current testing method, in particular to a large impact current simulation testing method. technical background [0002] High power continuous wave microwave systems are mainly used for auxiliary heating of magnetic confinement fusion devices. This type of system has two typical characteristics: 1) The high-power vacuum tube is the core component of it. At present, it basically relies on imports. If the system fails, the electronic tube will be scrapped; 2) The high-voltage power supply is the energy source of this type of microwave system. When the electronic tube is in the internal ignition failure state, it is equivalent to short-circuiting the high-voltage power supply. At this time, the large current in the system circuit will generate instantaneous The large change of , produces a strong induced electromotive force, which poses a great threat to various components in the system. The key to avoiding losses and eliminat...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 冯建强杨永
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI