Default current test method of impulse voltage mixed high voltage direct current converter valve
First Claim
1. A default current testing apparatus for testing the high voltage direct current converter valve by impulse voltage, the apparatus comprising:
- a test valve;
a direct current source;
an auxiliary valve;
a default current source; and
a surge generator, wherein the said surge generator is connected with said test valve in parallel, and is connected with said auxiliary valve;
wherein the default current source includesa direct current voltage source;
a voltage regulator;
a capacitor;
a reactor;
a plurality of isolation valves including a first isolation valve, a second isolation valve and a third isolation valve each connected with each other in parallel;
a resistor;
a plurality of switches including a first switch, a second switch and a third switch each connected with each other in parallel; and
a plurality of capacitors including a first capacity, a second capacity and a third capacity each connected with each other in parallel,wherein each of the first isolation valve, the second isolation value and third isolation valve, the first capacitor, the second capacitor and the third capacitor, the first switch, the second switch, and the third switch is connected with the reactor in series;
wherein the resistor is connected with the first switch, the second switch and the third switch in series;
wherein an output end of the direct current voltage source is connected with the resistor;
wherein the first switch, the second switch and the third switch are connected with the first isolation valve, the second isolation valve and the third isolation valve; and
wherein the voltage regulator is connected with the direct current voltage source in parallel.
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Abstract
The present invention provides to a default current testing method of the high voltage direct current converter valve composited by impulse voltage. The technical scheme of the invention composites the symmetrical positive and negative voltage and the impulse into asymmetric positive and negative high voltage, it makes the test valve voltage accurately achieve required peak value at the set time. The test circuit is simple relatively; the high voltage source of the default current test circuit is instead by surge generators. The test method is flexible, safe, and suitable for different DC project converter valves.
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Citations
7 Claims
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1. A default current testing apparatus for testing the high voltage direct current converter valve by impulse voltage, the apparatus comprising:
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a test valve; a direct current source; an auxiliary valve; a default current source; and a surge generator, wherein the said surge generator is connected with said test valve in parallel, and is connected with said auxiliary valve; wherein the default current source includes a direct current voltage source; a voltage regulator; a capacitor; a reactor; a plurality of isolation valves including a first isolation valve, a second isolation valve and a third isolation valve each connected with each other in parallel; a resistor; a plurality of switches including a first switch, a second switch and a third switch each connected with each other in parallel; and a plurality of capacitors including a first capacity, a second capacity and a third capacity each connected with each other in parallel, wherein each of the first isolation valve, the second isolation value and third isolation valve, the first capacitor, the second capacitor and the third capacitor, the first switch, the second switch, and the third switch is connected with the reactor in series; wherein the resistor is connected with the first switch, the second switch and the third switch in series; wherein an output end of the direct current voltage source is connected with the resistor; wherein the first switch, the second switch and the third switch are connected with the first isolation valve, the second isolation valve and the third isolation valve; and wherein the voltage regulator is connected with the direct current voltage source in parallel. - View Dependent Claims (2, 4, 6)
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3. A default current testing device for testing the high voltage direct current converter valve by impulse voltage, the device comprising:
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a test valve; a direct current source; an auxiliary valve; a default current source; and a surge generator, wherein the said surge generator is connected with said test valve in parallel, and is connected with said auxiliary valve, wherein the default current source includes a direct current voltage source; a voltage regulator; a capacitor; a reactor; a plurality of isolation valves including a first isolation valve, a second isolation valve and a third isolation valve each connected with each other in parallel; a resistor; a plurality of switches including a first switch, a second switch and a third switch each connected with each other in parallel; and a plurality of capacitors including a first capacity, a second capacity and a third capacity each connected with each other in parallel, wherein each of the first isolation valve, the second isolation value and third isolation valve, the first capacitor, the second capacitor and the third capacitor, the first switch, the second switch, and the third switch is connected with the reactor in series; wherein the resistor is connected with the first switch, the second switch and the third switch in series; wherein an output end of the direct current voltage source is connected with the resistor; wherein the first switch, the second switch and the third switch are connected with the first isolation valve, the second isolation valve and the third isolation valve; and wherein the voltage regulator is connected with the direct current voltage source in parallel.
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5. A default current testing system for testing the high voltage direct current converter valve by impulse voltage, the system comprising:
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a test valve; a direct current source; an auxiliary valve; a default current source; and a surge generator, wherein the said surge generator is connected with said test valve in parallel, and is connected with said auxiliary valve; wherein the default current source includes a direct current voltage source; a voltage regulator; a capacitor; a reactor; a plurality of isolation valves including a first isolation valve, a second isolation valve and a third isolation valve each connected with each other in parallel; a resistor; a plurality of switches including a first switch, a second switch and a third switch each connected with each other in parallel; and a plurality of capacitors including a first capacity, a second capacity and a third capacity each connected with each other in parallel, wherein each of the first isolation valve, the second isolation value and third isolation valve, the first capacitor, the second capacitor and the third capacitor, the first switch, the second switch, and the third switch is connected with the reactor in series; wherein the resistor is connected with the first switch, the second switch and the third switch in series; wherein an output end of the direct current voltage source is connected with the resistor; wherein the first switch, the second switch and the third switch are connected with the first isolation valve, the second isolation valve and the third isolation valve; and wherein the voltage regulator is connected with the direct current voltage source in parallel. - View Dependent Claims (7)
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Specification