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Multi-range adjustable equivalent load for experiments

An equivalent load and multi-range technology, applied in the field of experimental equipment, can solve problems such as not being a certain value, and achieve the effect of convenient shorting and adjustment

Inactive Publication Date: 2015-07-22
四川省绵竹西南电工设备有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of related resistance, stray capacitance, and voltage measuring equipment in the test circuit, the parameters that can be equivalent to the converter valve are not a definite value, so the equivalent load needs to be adjustable in multiple ranges

Method used

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  • Multi-range adjustable equivalent load for experiments
  • Multi-range adjustable equivalent load for experiments
  • Multi-range adjustable equivalent load for experiments

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 — Figure 4 As shown, a test can adjust the equivalent load in multiple ranges, including an air-cushion mobile base 1, and the upper surface of the air-cushion mobile base 1 is provided with three Rdc columns 2 and one Rs, Cs, Lr column 3. The three Rdc columns 2 are respectively provided with series-connected DC resistances, and the Rs, Cs, and Lr columns 3 are provided with series-connected equivalent resistances, equivalent capacitances and equivalent inductances, and the described DC resistances, equivalent resistances, equivalent Capacitance and equivalent inductance can be short-circuited by shorting rods, and the top of the three Rdc columns 2 and one Rs, Cs, Lr column 3 is provided with a shielding case 4 .

[0024] In this embodiment, the three Rdc columns 2 and one Rs, Cs, Lr column 3 all include t...

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Abstract

The invention discloses a multi-range adjustable equivalent load for experiments. The multi-range adjustable equivalent load comprises a movable air cushion base. Three columns Rdc and a column Rs, Cs and Lr are arranged on the surface of the movable air cushion base. Direct-current resistors in series connection are arranged in each column Rdc. An equivalent resistor, an equivalent capacitor and an equivalent inductor in series connection are arranged in the column Rs, Cs and Lr. The direct-current resistors, the equivalent resistor, the equivalent capacitor and the equivalent inductor can be in short circuit through short circuit rods. A shielding cover is arranged at the tops of the three columns Rdc and the top of the column Rs, Cs and Lr. The multi-range adjustable equivalent load has the advantages that equivalence is achieved by selecting reasonable resistor, capacitor and inductor combinations according to different electrical characteristics showed by a direct-current converter valve under different electric strength, and accordingly, a correct partial pressure relationship with a sample valve is formed.

Description

technical field [0001] The invention belongs to the field of experimental equipment, in particular to a multi-range adjustable equivalent load for testing. Background technique [0002] For the insulation test of thyristor converter valves of ±660kV, ±800kV, and ±1100kV UHVDC transmission projects, especially the MVU insulation test, if the test is carried out according to the traditional four-fold valve with complete suspension, because the test voltage is high and the size of the test circuit Large and other characteristics, whether it is hoisting work or test work, its implementation is very difficult. Therefore, it is necessary to invent an equivalent load device, which will replace a part of the multi-valve test product during the multi-valve insulation type test, and its parameters are equivalent to those of the corresponding thyristor converter valve. However, due to the influence of related resistance, stray capacitance, and voltage measuring equipment in the test c...

Claims

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Application Information

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IPC IPC(8): G01R1/20
Inventor 蔡德春温福海
Owner 四川省绵竹西南电工设备有限责任公司
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