A small inductive current opening and closing test circuit of an isolating switch
A technology of isolating switch and inductive current, which is applied in the field of small inductive current opening and closing test circuit of isolating switch, which can solve the problems of inaccurate test results and increased test voltage
Active Publication Date: 2022-06-03
XIAN HIGH VOLTAGE APP RES INST CO LTD
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] There are a large number of inductive loads in the power system, such as no-load power supplies, motors, etc. When the isolating switches connected to these inductive loads are opened, inductive current will flow through these isolating switches. Therefore, these isolating switches need to have certain The ability to isolate these inductive currents needs to analyze the performance of the isolating switch by conducting small inductive current opening and closing tests. However, when performing small inductive current opening and closing tests, the isolating switch changes from the closed position to the open position When the gate position is changed, the test voltage will increase significantly due to the change of the load. If the test voltage increases too much, the test result will be inaccurate
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
[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0034] This application provides a small inductive current switching test circuit of an isolating switch for measuring whether the isolating switch capability of isolating inductive current meets the requirements, see figure 1 , the circuit can include:
[0035] AC power U 1 ;
[0036] The first end and the AC power supply U 1 The first end of the suppression resistor R is connected to the suppression resistor R, and the second end...
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 application provides a small inductive current switching test circuit for an isolating switch, including: an AC power supply; a suppression resistor whose first end is connected to the first end of the AC power supply, and the second end of the suppression resistor is connected to a voltage monitoring node ; one end is connected to the voltage monitoring node, and the other end is grounded stray capacitance; the concentrated capacitance connected in parallel with the described stray capacitance; the second end is grounded inductance, which is arranged between the first end of the inductance and the voltage monitoring node The isolating switch under test; the voltage collector used to detect the voltage of the voltage monitoring node can judge the test of the isolating switch under test according to the change degree of the voltage of the voltage monitoring node before and after the opening of the isolating switch under test. Whether the voltage meets the requirements.
Description
technical field [0001] The invention relates to the technical field of electronic circuits, in particular to an isolation switch small inductive current switching test circuit. Background technique [0002] There are a large number of inductive loads in the power system, such as no-load power supplies, motors, etc., when the isolating switches connected to these inductive loads are opened, there will be inductive currents flowing through these isolating switches. Therefore, these isolating switches are required to have certain The ability to isolate these inductive currents requires the analysis of the performance of the isolating switch by conducting a small inductive current switching test. When the gate position is changed, the test voltage will increase significantly due to the change of the load. If the test voltage is excessively increased, the test results will be inaccurate. SUMMARY OF THE INVENTION [0003] In view of this, the embodiment of the present invention...
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 Patents(China)
IPC IPC(8): G01R31/327
CPCG01R31/3272
Inventor 李强苏春强刘宸黄东飞
Owner XIAN HIGH VOLTAGE APP RES INST CO LTD