Method for testing current distribution of each layer of superconducting cable
A technology of superconducting cables and current distribution, which is applied in the direction of measuring current/voltage, measuring devices, measuring electrical variables, etc., and can solve problems such as testing current distribution characteristics
Pending Publication Date: 2021-09-21
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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Problems solved by technology
However, there is no method for testing the current distribution characteristics between the multilayer superconducting conductors in the above-mentioned new superconducting cable in the prior art.
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[0025] The application will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present application.
[0026] like figure 1 As shown, a test method for current distribution in each layer of a superconducting cable, including steps 1 to 4.
[0027] Step 1: Select a superconducting cable with two conductor layers and at least one shielding layer as the test cable, and place the ring coil of the differential current sensor between the first conductor and the second conductor of the superconducting cable.
[0028] The test method in the invention can test the current distribution of each layer in the superconducting cable with multiple conductor layers and shielding layers. In this embodiment, a superconducting cable having two layers of superconducting conductor layers and two layers of superconducti...
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The invention relates to a method for testing current distribution of each layer of a superconducting cable, which is characterized by comprising the following steps of: 1, selecting the superconducting cable with two conductor layers and at least one shielding layer as a test cable, and arranging an annular coil of a differential current sensor between a first conductor layer and a second conductor layer of the superconducting cable; 2, applying an input current to a copper lining core of the test cable to obtain a voltage-current conversion characteristic of the differential current sensor; 3, respectively connecting the first layer conductor and the second layer conductor of the superconducting cable to a current source, and respectively applying input current to the first layer conductor and the second layer conductor so as to test the output voltage of the differential current sensor; and 4, calculating the current proportion of the first layer of conductor based on the voltage-current conversion characteristics of the differential current sensor and the output voltage of the differential current sensor in the step 3. The method is wide in application range and good in detection effect.
Description
technical field [0001] The invention relates to the field of superconducting power transmission, in particular to a method for testing the current distribution of each layer of a superconducting cable. Background technique [0002] At present, in order to determine whether the design of the conductor and shielding intercept of the superconducting cable meets the current sharing requirements of the superconducting cable, it is necessary to test the current distribution inside the superconducting cable. Typically, Rogowski coils are used to measure the current in superconducting cables. Background technology 1: Current measurement of the shielding layer of cold-insulated high-temperature superconducting cables, Zhao Weijie et al., Cryogenic Engineering, Issue 5, 2013. As shown in background technology 1, the conductor layer and the shielding layer of two superconducting cables are respectively connected to form a current loop, and the Rogowski coil is placed between the condu...
Claims
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Login to View More IPC IPC(8): G01R19/00
CPCG01R19/00
Inventor 魏本刚焦婷张智勇张喜泽韩云武李红雷鲁燕青王天龙黄逸佳陈志越
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO