Test method of dry type smoothing reactor end-to-end medium-frequency oscillator capacitor discharge
A technology of smoothing reactors and oscillating capacitors, applied in the direction of testing dielectric strength, etc., can solve problems such as damage to pulse capacitors
Active Publication Date: 2015-01-07
BAODING TIANWEI BAOBIAN ELECTRICAL
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Problems solved by technology
The standard also points out: the medium frequency oscillation capacitor discharge test uses a pulse capacitor to discharge the smoothing reactor through the ball gap or a circuit breaker. The actual oscillation frequency and duration depend on the capacity of the pulse capacitor and the inductance of the test product. Capacitance and lead inductance will cause overshoot on the rising edge of the wave front. The peak value of the overshoot voltage should not be considered as the amplitude of the intermediate frequency oscillation. Excessively high peak value of the overshoot voltage will damage the pulse capacitor
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[0021] The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.
[0022] A dry-type smoothing reactor end-to-end intermediate frequency oscillation capacitor discharge test method, after the tested smoothing reactor 3 is connected in series with a shunt 5, it is connected to a lightning impulse generator 1, an impact load capacitor 2 and a resistance-capacitance voltage divider respectively 4, and match the digital recording system;
[0023] The lightning impulse generator is used for multi-level series or parallel connection. The main capacitance is changed through series or parallel connection combination to meet the test needs. It has wave front resistance and wave tail resistance with different resistance values;
[0024] The impact load capacitance is a multi-level capacitance stacking type, and the capacitance value can be flexibly adjusted through the shorting rod;
[0025] The resistance-capacitance d...
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The invention relates to a test method of dry type smoothing reactor end-to-end medium-frequency oscillator capacitor discharge and belongs to the technical field of electric reactor tests. The technical scheme includes that after connected with a diverter (5) in series, a smoothing reactor (3) to be tested is respectively connected with a lighting impulse generator (1), an impact load capacitor (2) and a resistance-capacitance divider (4) and is matched with a digital recording system, and involved test procedures and involved test wave shape records are carried out according to national standards. The test method of the dry type smoothing reactor end-to-end medium-frequency oscillator capacitor discharge has the advantages that conventional lighting impulse test devices including the lighting impulse generator and the like are adopted, through the reasonable coordination of parameter calculation and devices, test wave shapes meeting the requirements of the standards can be obtained, and dry type smoothing reactor end-to-end medium-frequency oscillator capacitor discharge tests with various voltage classes can be completed.
Description
technical field [0001] The invention relates to a dry-type smoothing reactor end-to-end medium-frequency oscillation capacitor discharge test method, which belongs to the technical field of reactor tests. Background technique [0002] The smoothing reactor is an important device in the DC transmission line. It is installed behind the converter valve to suppress the harmonics in the output current, so that the output DC is close to the ideal DC, thereby improving the quality of power transmission and reducing line and equipment losses. . There are two types of smoothing reactors: dry type and oil-immersed type. According to the national standard "GB / T25092-2010 Dry-type hollow smoothing reactor for high-voltage direct current transmission", the end-to-end intermediate frequency oscillation capacitor discharge test is a type test item for the smoothing reactor, which is sometimes listed as an example in the product technical contract The test items are required to be carried...
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IPC IPC(8): G01R31/12
Inventor 王雪刚郭建贞刘学民张永刚
Owner BAODING TIANWEI BAOBIAN ELECTRICAL