CN203606459U - Alternating-current voltage withstand test device for converter valve containing direct-current biases - Google Patents
Alternating-current voltage withstand test device for converter valve containing direct-current biases Download PDFInfo
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- CN203606459U CN203606459U CN201320822198.2U CN201320822198U CN203606459U CN 203606459 U CN203606459 U CN 203606459U CN 201320822198 U CN201320822198 U CN 201320822198U CN 203606459 U CN203606459 U CN 203606459U
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- 238000012360 testing method Methods 0.000 title claims abstract description 51
- 239000003990 capacitor Substances 0.000 claims abstract description 69
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 239000012212 insulator Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model relates to a converter valve testing device, and specifically relates to an alternating-current voltage withstand test device for a converter valve containing direct-current biases. The device supplies an alternating-current voltage containing the direct-current biases for the testing of the converter valve. The device is characterized in that the device comprises an alternating-current power supply, a capacitor bank branch circuit, a resistor-capacitor branch circuit, a first capacitor branch circuit, a first switch-resistor branch circuit, a resistor branch circuit, a second capacitor branch circuit, and a direct-current power supply, wherein the alternating-current power supply, the capacitor bank branch circuit, the resistor-capacitor branch circuit, the first capacitor branch circuit, the first switch-resistor branch circuit, the resistor branch circuit, the second capacitor branch circuit and the direct-current power supply are in parallel connection. A resistor R1 is connected between the alternating-current power supply and the capacitor bank branch circuit. A thyristor valve is connected between the resistor-capacitor branch circuit and the first capacitor branch circuit. Two ends of the first capacitor branch circuit are in parallel connection with a second switch branch circuit. Local discharge measurement and test equipment is disposed between an impedor of resistor-capacitor branch circuit and the ground. The device provided by the utility model can meet the test of the direct-current biases in an alternating-current test, greatly reduces the dangerousness of the direct-current converter valve in a process of an alternating-current test, and improves the flexibility of the alternating-current test of the converter valve.
Description
Technical field
The utility model relates to a kind of converter valve experiments device, is specifically related to a kind of converter valve alternating-current voltage resistance test device containing direct current biasing.
Background technology
DC converter valve is the key equipment in direct current transportation, before dropping into electrical network use, must carry out strict type approval test.The withstand voltage test of single valve AC-to-DC is a more special pilot project in extra-high voltage direct-current converter valve insulation type test.The voltage that test product valve bears in this pilot project is the alternating voltage with direct current biasing, there is no to provide the test unit of such voltage source in current testing equipment, so adopt the mode of alternating-current voltage source and direct voltage source stack to realize this test.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of converter valve alternating-current voltage resistance test device containing direct current biasing, the utility model can meet the test of needs direct current biasing in ac test, greatly reduce the danger of DC converter valve in ac test process, improved the dirigibility of DC converter valve ac test.
The purpose of this utility model is to adopt following technical proposals to realize:
The utility model provides a kind of converter valve alternating-current voltage resistance test device containing direct current biasing, its improvements are, described device comprises AC power in parallel, capacitor group branch road, capacitance-resistance branch road, the first capacitor branch road, the first switch-resistance branch, resistance branch, the second capacitor branch road and direct supply;
Resistance R 1 is connected between AC power and capacitor group branch road; Thyristor valve is connected between capacitance-resistance branch road and the first capacitor branch road, is parallel with second switch branch road at the first capacitor branch road two ends; Between the impedance of capacitance-resistance branch road and ground, be connected with measurement of partial discharge testing apparatus.
Further, described capacitor group represents with C1; Described capacitance-resistance is propped up capacitor group C2 and the impedance Z composition of route series connection; The first capacitor branch road comprises capacitor group C3; Described the first switch-resistance branch is made up of the switch Breaker1 connecting and resistance R 2; Described resistance branch comprises resistance R 3; Described the second capacitor branch road comprises capacitor group C4; Described second switch branch road comprises switch Breaker2.
Further, described capacitor group C1, capacitor group C2, capacitor group C3 and capacitor group C4 are installed in and lay on platform, described in lay platform and adopt insulcrete and insulator to realize.
Compared with the prior art, the beneficial effect that the utility model reaches is:
1, in the pressure process of the utility model to single converter valve ac test and process of the test, capacitor set discharge is illustrated, can meet the test of needs direct current biasing in ac test, greatly reduce the danger of DC converter valve in ac test process, improved the dirigibility of DC converter valve ac test.
2, the utility model adopts different switches that AC and DC power supply is isolated, substep drops into AC and DC power supply and can greatly reduce test product and testing equipment to cause the risk of damage, capacitor is laid platform and is used insulcrete and insulator, greatly improves capacitor job security in test.Different switches is independently controlled, and the electric charge in capacitor can be released completely in the situation that not stopping alternating current thereby realize.Guarantee the reliability of local discharge test after withstand voltage test, the method has improved the safety and reliability of DC converter valve AC voltage withstand test greatly.
3, AC and DC voltage of the present utility model is independent of each other, and the quality of power supply is high.
Accompanying drawing explanation
Fig. 1 is the electrical schematic diagram containing the converter valve alternating-current voltage resistance test device of direct current biasing that the utility model provides.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
As shown in Figure 1, this device comprises AC power in parallel, capacitor group branch road, capacitance-resistance branch road, the first capacitor branch road, the first switch-resistance branch, resistance branch, the second capacitor branch road and direct supply to the electrical schematic diagram of the converter valve alternating-current voltage resistance test device containing direct current biasing that the utility model provides;
Resistance R 1 is connected between AC power and capacitor group branch road; Thyristor valve is connected between capacitance-resistance branch road and the first capacitor branch road, is parallel with second switch branch road at the first capacitor branch road two ends; Between the impedance of capacitance-resistance branch road and ground, be connected with measurement of partial discharge testing apparatus PC test.
Described capacitor group represents with C1; Described capacitance-resistance is propped up capacitor group C2 and the impedance Z composition of route series connection; The first capacitor branch road comprises capacitor group C3; Described the first switch-resistance branch is made up of the switch Breaker1 connecting and resistance R 2; Described resistance branch comprises resistance R 3; Described the second capacitor branch road comprises capacitor group C4; Described second switch branch road comprises switch Breaker2.Capacitor group C1, capacitor group C2, capacitor group C3 and capacitor group C4 are installed in and lay on platform, described in lay platform and adopt insulcrete and insulator to realize.
The utility model also provides a kind of converter valve alternating current withstand voltage test method containing direct current biasing, and the device that described method is used is the converter valve alternating-current voltage resistance test device containing direct current biasing, comprises the steps:
(1) confirm that whether all wiring of converter valve alternating-current voltage resistance test device correct, by switch Breaker1 and switch Breaker2 in gate-dividing state;
(2) boost by the pressure regulator that regulates alternating-current voltage source, rising gradually alternating voltage is 368kV to needed ac test voltage effective value;
(3) boost by the pressure regulator that regulates direct voltage source, rising gradually DC voltage is-33kV to be 15 seconds until reach test required time to needed DC experiment magnitude of voltage;
(4) AC and DC power supply voltage is down to zero;
(5) switch Breaker1 is closed a floodgate;
(6) switch Breaker1 after closing a floodgate 5 minutes closes a floodgate switch Breaker2, and test completes.
In process of the test, be full of capacitor group C3 electric weight adding of direct voltage source, switch Breaker1 combined floodgate capacitor C3 electric weight is released by resistance R 2, reach the electric weight of capacitor group C3 after the time of releasing and released, by the electric weight on switch Breaker2 combined floodgate capacitor group C3 has thoroughly been released.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although the utility model is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement embodiment of the present utility model, and do not depart from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (3)
1. the converter valve alternating-current voltage resistance test device containing direct current biasing, it is characterized in that, described device comprises AC power in parallel, capacitor group branch road, capacitance-resistance branch road, the first capacitor branch road, the first switch-resistance branch, resistance branch, the second capacitor branch road and direct supply;
Resistance R 1 is connected between AC power and capacitor group branch road; Thyristor valve is connected between capacitance-resistance branch road and the first capacitor branch road, is parallel with second switch branch road at the first capacitor branch road two ends; Between the impedance of capacitance-resistance branch road and ground, be connected with measurement of partial discharge testing apparatus.
2. converter valve alternating-current voltage resistance test device as claimed in claim 1, is characterized in that, described capacitor group represents with C1; Described capacitance-resistance is propped up capacitor group C2 and the impedance Z composition of route series connection; The first capacitor branch road comprises capacitor group C3; Described the first switch-resistance branch is made up of the switch Breaker1 connecting and resistance R 2; Described resistance branch comprises resistance R 3; Described the second capacitor branch road comprises capacitor group C4; Described second switch branch road comprises switch Breaker2.
3. converter valve alternating-current voltage resistance test device as claimed in claim 2, is characterized in that, described capacitor group C1, capacitor group C2, capacitor group C3 and capacitor group C4 are installed in and lay on platform, described in lay platform and adopt insulcrete and insulator to realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320822198.2U CN203606459U (en) | 2013-12-12 | 2013-12-12 | Alternating-current voltage withstand test device for converter valve containing direct-current biases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320822198.2U CN203606459U (en) | 2013-12-12 | 2013-12-12 | Alternating-current voltage withstand test device for converter valve containing direct-current biases |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203606459U true CN203606459U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320822198.2U Expired - Lifetime CN203606459U (en) | 2013-12-12 | 2013-12-12 | Alternating-current voltage withstand test device for converter valve containing direct-current biases |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203606459U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675625A (en) * | 2013-12-12 | 2014-03-26 | 国家电网公司 | Alternating-current voltage withstand test device of converter valve with direct-current offset and test method of alternating-current voltage withstand test device |
| CN107870270A (en) * | 2016-09-27 | 2018-04-03 | 广州西门子变压器有限公司 | Direct current magnetic bias test equipment of transformer |
-
2013
- 2013-12-12 CN CN201320822198.2U patent/CN203606459U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675625A (en) * | 2013-12-12 | 2014-03-26 | 国家电网公司 | Alternating-current voltage withstand test device of converter valve with direct-current offset and test method of alternating-current voltage withstand test device |
| CN107870270A (en) * | 2016-09-27 | 2018-04-03 | 广州西门子变压器有限公司 | Direct current magnetic bias test equipment of transformer |
| CN107870270B (en) * | 2016-09-27 | 2023-06-13 | 广州西门子能源变压器有限公司 | DC magnetic bias test equipment for transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140521 |
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| CX01 | Expiry of patent term |