Impulse discharge voltage calculating model construction method
An impulse discharge and voltage calculation technology, applied in the direction of testing dielectric strength, etc., can solve the problem of no calculation model construction method, and achieve the effect of saving the test cost
Active Publication Date: 2014-02-19
STATE GRID CORP OF CHINA +1
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[0005] At present, there is no relevant literature report on the calculation model construction method suitable for the standard operation impulse discharge test data of the rod-plate gap in China.
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[0033] In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the embodiments, but the content of the present invention is not limited to the following embodiments. Those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms are also within the scope defined by the claims listed in this application.
[0034] The concept of elastic coefficient was first applied in the economic field, reflecting the ratio of the growth rate of two related economic indicators in a certain period of time, and also expressing the dependence of the growth rate of one economic variable on the growth rate of another economic variable. Through a large number of experimental studies, it is found that the most direct factor affecting the discharge voltage is the test gap distance when the gap discharge voltage test is carried out on the same test product under the...
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The invention relates to an impulse discharge voltage calculating model construction method. The impulse discharge voltage calculating model construction method is characterized by comprising steps of: 1), establishing a gap discharge elasticity coefficient model, bringing forward gap discharge elasticity coefficient definition according to a gap discharge voltage change rate and a gap distance change rate; 2) calculating gap discharge elasticity coefficients, calculating the gap discharge elasticity coefficients by carrying out rod-board operation impulse discharge test researches under different gap distances; and 3), carrying out curve fitting according to the calculating results, calculating correlated undetermined coefficients employing an appropriate curve fitting mode according to a trend of calculation results of the rod-board gap standard operation impulse discharge elasticity coefficients and the gap distances. Through the calculating model provided by the method, standard operation impulse voltage calculating of approximation electrode structures can be carried out, test cost is saved, and reference basis is provided for external insulation design of power transmission and transformation engineering.
Description
technical field [0001] The invention relates to a method for constructing a calculation model of impulse discharge voltage, in particular to a method for constructing a calculation model based on standard operation impulse discharge test data of a bar-plate gap, and belongs to the technical field of impulse voltage measurement. Background technique [0002] The overvoltage generated by the electromagnetic energy oscillation of the system due to internal reasons such as circuit breaker operation or short circuit of the power system is the operating overvoltage. It is highly destructive, and with the continuous improvement of the voltage level of the power system, the insulation problem under the operating impulse voltage has become more and more prominent. Scholars from various countries have carried out extensive and in-depth research on the characteristics of air gap discharge under the operating impulse voltage. [0003] Under the action of the operating impulse voltage, t...
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IPC IPC(8): G01R31/12
Inventor 曹晶张勤全姗姗梁进祥彭磊李玮东
Owner STATE GRID CORP OF CHINA