Programmed calculation method of diverter impedance parameters

A calculation method and impedance parameter technology, applied in the calculation field of shunt impedance parameters, can solve problems such as inaccurate measurement of shunt impedance parameters, and achieve the effects of improving calculation accuracy, facilitating engineering applications, and accurate calculation

Inactive Publication Date: 2018-04-27
ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER
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Problems solved by technology

[0003] The invention provides a programmatic calculation method for shunt impedance parameters, which solves the technical problem that the prior art cannot accurately measure shunt impedance parameters at different frequencies

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  • Programmed calculation method of diverter impedance parameters
  • Programmed calculation method of diverter impedance parameters
  • Programmed calculation method of diverter impedance parameters

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Embodiment Construction

[0041] The present invention is described in detail below in conjunction with accompanying drawing:

[0042] A programmatic calculation method for shunt impedance parameters, characterized in the following steps:

[0043] The first step is to establish the electromagnetic field finite element model of a single manganese-copper sheet of the shunt, the overall electromagnetic field finite element model of the shunt, and the electromagnetic field finite element model of the shunt manganese-copper sheet system according to the size of the shunt;

[0044] The second step is to set the calculation frequency in the mathematical operation software, and the calculation frequency is set at 10 -3 Hz—10 6 in the Hz range;

[0045] The third step is to analyze and calculate the current distribution of the single manganin sheet of the shunt at the frequency set in the second step in the finite element model of the electromagnetic field of the single manganin sheet of the shunt, and calculat...

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Abstract

The invention discloses a programmed calculation method of diverter impedance parameters and solves the problem that in the prior art, the diverter impedance parameters cannot be accurately measured at different frequencies. According to the method, programmed calculation is achieved through automatic data interaction of electromagnetic field finite element analysis software and mathematical operation software, it is achieved that finite element modules of a diverter are built, a calculation frequency is input, then the programmed calculation of the diverter impedance parameters can be achieved, and a result of the diverter impedance parameters is directly output. Through finite element analysis, the resistance of a single copper-manganese slice of the diverter and a diverter inductance matrix parameter are calculated, a loop voltage equation is edited according to all the parameters, and the diverter impedance parameters are solved through mathematical operation. According to the calculation process, it is achieved that the mathematical operation software calls the finite element analysis software, receives the finite element analysis result, performs the next operation and finally directly outputs the operation result of the diverter impedance parameters, it is achieved that the quantitative relation between the diverter impedance parameters and the frequencies is built, andengineering application is facilitated.

Description

technical field [0001] The invention relates to a shunt, in particular to a calculation method for the impedance parameter of the shunt. Background technique [0002] The shunt is an important current sensor in the field of electrical engineering, and it is often used for large current measurement. When measuring DC current, the circuit model of the shunt is a resistor, and the resistance value is the calibration value of the manufacturer. When the measured current passes through the shunt, the voltage signal output by the shunt is divided by the resistance value of the shunt to obtain the measured current; When measuring non-DC current, the shunt circuit model is usually a series connection of resistance and inductance. The resistance and inductance constitute the impedance parameter of the shunt. The impedance parameter is reflected in two parts: the impedance modulus and the impedance angle. The output voltage phasor is divided by the impedance parameter of the shunt. A...

Claims

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Application Information

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IPC IPC(8): G06F17/50G01R27/08
CPCG01R27/08G06F30/23
Inventor 关少平韩润东王琪郑雅轩董理科李小婧
Owner ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER
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