On-line test method and device for high-voltage thyristor
A technology of high-voltage thyristors and thyristors, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as inconvenience
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Embodiment 1
[0022] Such as figure 1 As shown, the buffer circuit of the thyristor is composed of a damping resistor and a damping capacitor in series, and the trigger circuit is a trigger board (TE board); the buffer circuit of the thyristor is connected in series with the trigger board, and then connected between the cathode and anode of the thyristor to test the high-voltage thyristor Methods for buffering circuit parameters and trigger functions include:
[0023] a Set a test resistor R0 in series with the thyristor to form a test circuit, and connect the two ends of the normally open contact K of a relay in parallel with the test resistor R0;
[0024] b Set up a voltage sampling module and a current sampling module to measure the voltage drop of the thyristor, the voltage of the test circuit, and the current flowing through the test circuit;
[0025] c To control the relay, measure and record the voltage and current parameters of the circuit twice when the normally open contact is op...
Embodiment 2
[0045] Such as figure 2 As shown, the circuit to be tested includes a high-voltage thyristor, its buffer circuit and a trigger board, and the test device of the present invention includes: two test points AB, a test resistor R0, a relay and a single-chip microcomputer control and detection module, and the test resistor R0 is connected to a test point Between one end of the thyristor and one end of the thyristor, the normally open contact K of the relay is connected in parallel with the test resistor R0. The single-chip microcomputer control and detection module includes: a voltage detection module, a current detection module, an interface for controlling the relay coil, a single-chip microcomputer, a display screen, and a trigger board The optical fiber receiving and sending module between the single-chip microcomputer; the voltage detection module detects the voltage at both ends of the test point, and the current detection module detects the current flowing into (outgoing) t...
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