Voltage transformer ferromagnetic resonance experimental method
A voltage transformer and ferromagnetic resonance technology, which is applied in the field of voltage transformer ferromagnetic resonance experiments, can solve the problems of burning coils and low impedance of the voltage transformer, and achieves the effects of convenient operation, low operation cost and reasonable design.
Inactive Publication Date: 2018-08-28
WUHAN ORIG TECH CO LTD
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AI Technical Summary
Problems solved by technology
[0003] The impedance of the voltage transformer itself is very small. Once the secondary side is short-circuited, the current will increase sharply and burn the coil
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0029] This embodiment comprises the following steps:
[0030] 1. According to the experimental wiring of the grounding power supply system, a voltage transformer with a triangle port is connected between every two capacitors, and the power supply is added, and the connected terminals and binding posts are checked to measure whether they are operating normally;
[0031] 2. Record and archive the test results, that is, the voltage values of each point;
[0032] 3. Disconnect the power supply, disconnect the will capacitor originally connected to phase A, and the analog circuit is completely short-circuited at the power supply end, so that the relative ground parameters of the system are unbalanced, the relative ground admittance of A is inductive, and the B and C phases are capacitive;
[0033] 4. After turning on the voltage, measure the phase-to-ground voltage, the neutral point-to-ground voltage and the open triangle voltage, record and archive the detection data, and comp...
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The invention relates to a voltage transformer ferromagnetic resonance experimental method, and belongs to the technical field of the voltage transformer. According to the experimental wiring of the grounding power supply system, a voltage transformer with the triangle port is connected between every two capacitors, and a power supply is added to check the connected terminals and connecting poststo measure the normal operation; the detection result, i.e. the voltage value of each point, is recorded and saved; and the power supply is disconnected, the original capacitor of phase A is disconnected, the simulation line is completely shorted at the power supply end and the ground parameters of each phase the system are imbalanced, the voltage value is also compared with the normal operating voltage value, the change of each phasor in case of ferromagnetic resonance of the voltage transformer is observed, and the dynamic change is exported through computer. The design is reasonable, the safety factor is high, the operation is convenient, the flexibility is good, the stability between all the phasors is high, the data detection and export are convenient, the subsequent comparison and analysis are simple and the operation cost is low so that the suppression point and the phasor of the ferromagnetic resonance of the voltage transformer can be detected and analyzed, and thus the ferromagnetic resonance technology is enabled to enter a new stage.
Description
technical field [0001] The invention relates to a ferromagnetic resonance experiment method of a voltage transformer, belonging to the technical field of voltage transformers. Background technique [0002] The basic structure of a voltage transformer is very similar to that of a transformer. It also has two windings, one called the primary winding and the other called the secondary winding. Both windings are mounted or wound on the core. There is insulation between the two windings and between the winding and the core, so that there is electrical isolation between the two windings and between the winding and the core. When the voltage transformer is running, the primary winding N1 is connected to the line in parallel, and the secondary winding N2 is connected to the instrument or relay in parallel. Therefore, when measuring the voltage on the high-voltage line, although the primary voltage is high, the secondary voltage is low, which can ensure the safety of operators and ...
Claims
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IPC IPC(8): G01R33/12
CPCG01R33/1253
Inventor 赵宏岩赵书瑾
Owner WUHAN ORIG TECH CO LTD