Detection system for acquiring thyristor-level impedance of converter valve
A thyristor-level, detection system technology, applied in the direction of measuring resistance/reactance/impedance, measuring electricity, measuring devices, etc., can solve problems such as inability to detect impedance quickly and accurately, and achieve safe and stable operation, fast processing speed, and low power consumption. low effect
Pending Publication Date: 2022-07-29
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +1
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In order to solve the problem in the prior art that the impedance of the thyristor stage of the converter valve cannot be quickly and accurately detected, this application discloses a detection system for obtaining the impedance of the thyristor stage of the converter valve
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] In order to solve the problem that the impedance of the thyristor stage of the converter valve cannot be quickly and accurately detected in the prior art, the present application discloses a detection system for obtaining the impedance of the thyristor stage of the converter valve.
[0026] The present application discloses a detection system for obtaining thyristor stage impedance of a converter valve, see figure 1 The shown structural diagram includes a test signal generation module, a resistance synchronous measurement module, a voltage and current signal acquisition module and an impedance calculation module. The test signal generation module, the resistance synchronous measurement module, the voltage and current signal acquisition module and the impedance calculation module are connected in sequence.
[0027] The test signal generation module is used for connecting with a target thyristor-level damping circuit, and for outputting sinusoidal signals of different fre...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a detection system for acquiring thyristor-level impedance of a converter valve. The detection system comprises a test signal generation module, a resistance synchronous measurement module, a voltage and current signal acquisition module and an impedance calculation module, the test signal generation module is used for outputting a sinusoidal signal to the target thyristor-level damping loop; the resistance synchronous measurement module comprises five reference resistors with different resistance values, and the target thyristor level damping loop and the five reference resistors with different resistance values form five groups of impedance loops respectively; the voltage circuit signal acquisition module is used for acquiring voltages and currents of five groups of impedance loops; and the impedance calculation module is used for acquiring impedance measurement values of the five groups of impedance loops, acquiring an optimal measurement value in the five groups of impedance measurement values, and acquiring an impedance module value of the target thyristor-level damping loop. The impedance of the thyristor-level damping loop can be rapidly detected, and safe and stable operation of a direct-current power transmission project is assisted.
Description
technical field [0001] The present application relates to the technical field of thyristor-level impedance calculation, in particular to a detection system for obtaining thyristor-level impedance of a converter valve. Background technique [0002] In recent years, with the rapid development of my country's DC transmission technology, the number of converter stations is increasing. Among them, the converter valve is the core equipment in the DC transmission project, and the thyristor has the advantages of large current capacity and high withstand voltage level. The most commonly used power electronic device in the converter valve of DC transmission, the thyristor stage is the most basic electrical structural unit of the converter valve, and its failure may lead to serious accidents such as commutation failure of the converter valve, so the performance of the thyristor stage is safe and stable. It is the basis for ensuring the safe and stable operation of the converter valve and...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/26G01R27/08G01R1/30
CPCG01R31/26G01R31/263G01R27/08G01R1/30
Inventor 徐阳陶风波许建刚邓洁清谢天喜杨景刚马勇赵科庞磊
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST