CN216485334U - Series resonance withstand voltage test system of gas insulated circuit breaker - Google Patents
Series resonance withstand voltage test system of gas insulated circuit breaker Download PDFInfo
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- CN216485334U CN216485334U CN202121768572.6U CN202121768572U CN216485334U CN 216485334 U CN216485334 U CN 216485334U CN 202121768572 U CN202121768572 U CN 202121768572U CN 216485334 U CN216485334 U CN 216485334U
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- 238000012360 testing method Methods 0.000 title claims abstract description 86
- 238000009413 insulation Methods 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 36
- 230000001052 transient effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of circuit breaker tests, and particularly relates to a series resonance withstand voltage test system of a gas insulated circuit breaker. The test system comprises a series resonance voltage generating device and a voltage signal acquisition device, wherein the series resonance voltage generating device is connected with the voltage signal acquisition device, and then the voltage signal acquisition device is connected with a tested gas insulation circuit breaker. The test system has the characteristics of simple structure and reasonable design, can test the gas insulated circuit breaker, and is particularly suitable for the voltage withstand test of the gas insulated circuit breaker with zero gauge pressure or low gauge pressure. The testing device can test the insulating property of the gas insulated circuit breaker under the working condition of air leakage, poor quality of the density relay and locking, and test the tolerance level of the gas insulated circuit breaker to continuous transient overvoltage in a certain time. The safety, reliability and working efficiency of electric power operation are effectively improved, and powerful guarantee is provided for the electric power field.
Description
Technical Field
The utility model belongs to the technical field of circuit breaker tests, and particularly relates to a series resonance withstand voltage test system of a gas insulated circuit breaker.
Background
The insulation performance of the existing alternating-current voltage-withstanding circuit breaker is usually checked only under rated pressure, the gas-insulated circuit breaker has the risk conditions that air leakage exists, a density relay can not be locked at low voltage due to poor quality, and the like, gas-insulated circuit breaker manufacturers also have the risk conditions that whether the gas-insulated circuit breaker can withstand different highest voltage levels under the condition of zero gauge pressure/low gauge pressure, the withstand voltage of the gas-insulated circuit breaker under the working condition of zero gauge pressure/low gauge pressure is mastered, the insulation performance of the gas-insulated circuit breaker is judged, and whether the requirement of operation under certain continuous voltage and transient overvoltage can be met.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a series resonance withstand voltage test system of a gas insulated circuit breaker. The purpose of the utility model is to improve the withstand voltage of a test article through a series resonance device and solve the problem that a conventional power frequency withstand voltage test is not suitable for a zero gauge pressure/low gauge pressure gas insulated circuit breaker.
The technical scheme adopted by the utility model for realizing the purpose is as follows:
the series resonance voltage withstand test system comprises a series resonance voltage generating device and a voltage signal acquisition device, wherein the series resonance voltage generating device is connected with the voltage signal acquisition device, and the voltage signal acquisition device is connected with a tested gas insulated circuit breaker.
Furthermore, the series resonance voltage generating device comprises a variable frequency power supply, a test transformer and a reactor which are connected.
Further, the variable frequency power supply comprises: the variable frequency power supply comprises a variable frequency power supply incoming line terminal, a capacitance signal acquisition terminal, a variable frequency power supply outgoing line terminal and a variable frequency power supply outgoing line; one end of the variable frequency power supply is connected with the alternating current test power supply through a variable frequency power supply incoming line terminal; the other end of the variable frequency power supply is connected with a test transformer incoming terminal at the upper part of the test transformer through a variable frequency power supply outgoing terminal, and the test transformer outgoing terminal at the other end of the upper part of the test transformer is connected with a reactor incoming terminal on the reactor; and a reactor wire outlet terminal at the other end of the reactor is sequentially connected with a capacitor upper terminal on the capacitor and an arc extinguishing air chamber upper end wiring terminal on the tested gas insulated circuit breaker.
Further, the alternating current test power supply is a 380V alternating current test power supply.
Furthermore, grounding ends are arranged on the shells of the variable frequency power supply, the test transformer and the reactor.
Further, the gas-insulated switchgear apparatus to be tested includes: the arc extinguishing device comprises a base, a gas pressure meter, a support sleeve, an arc extinguishing air chamber, an upper end wiring terminal of the arc extinguishing air chamber and a lower end wiring terminal of the arc extinguishing air chamber; the gas insulation circuit breaker comprises a base, a gas pressure meter, a support sleeve, an arc extinguishing air chamber upper connecting terminal, an arc extinguishing air chamber lower connecting terminal and a grounding terminal, wherein the gas pressure meter is connected to the upper portion of the base of the tested gas insulation circuit breaker, the arc extinguishing air chamber upper connecting terminal is connected to the upper portion of the gas pressure meter through the support sleeve in a sleeved mode, the arc extinguishing air chamber upper connecting terminal is arranged on the upper portion of the arc extinguishing air chamber, the arc extinguishing air chamber lower connecting terminal is arranged on the lower portion of the arc extinguishing air chamber, and the grounding terminal is connected to a shell of the tested gas insulation circuit breaker.
Furthermore, the voltage signal acquisition device is composed of a capacitor, the upper part of the capacitor is provided with a capacitor upper terminal, the lower part of the capacitor is provided with a capacitance signal output terminal, and the shell of the capacitor is also provided with a grounding terminal.
Furthermore, the capacitor is connected with a wire outlet terminal of the reactor and a wiring terminal at the upper end of an arc extinguishing air chamber on the tested gas insulated circuit breaker through an upper terminal of the capacitor; and a capacitance signal output terminal on the capacitor is connected with a capacitance signal acquisition terminal on the variable frequency power supply.
Further, the test system is used for testing the gas insulated circuit breaker.
Further, the gas insulated circuit breaker is a zero gauge pressure gas insulated circuit breaker or a low gauge pressure gas insulated circuit breaker.
The utility model has the following beneficial effects and advantages:
the series resonance withstand voltage test system of the gas insulated circuit breaker has the characteristics of simple structure and reasonable design. The device can test the gas insulated circuit breaker, and is particularly suitable for the voltage withstand test of the gas insulated circuit breaker with zero gauge pressure or low gauge pressure. The method comprises the steps of testing the insulation performance of the gas insulated circuit breaker under the locking working condition caused by poor quality of a gas leakage relay and a density relay, and testing the tolerance level of the gas insulated circuit breaker to continuous transient overvoltage within a certain time. The safety and the reliability of the electric power operation are effectively improved, the working efficiency of the electric power operation is obviously improved, and a powerful guarantee is provided for the electric power field.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of the system of the present invention.
In the figure:
alternating current test power supply 1, variable frequency power supply 2, variable frequency power supply incoming line terminal 3, capacitance signal acquisition terminal 4, variable frequency power supply outgoing line terminal 5, variable frequency power supply outgoing line 6, test transformer 7, test transformer incoming line terminal 8, test transformer outgoing line terminal 9, reactor 10, reactor incoming line terminal 11, reactor outgoing line terminal 12, capacitor 13, capacitance signal output terminal 14, capacitor upper terminal 15, tested gas insulated circuit breaker 16, base 17, barometer 18, support sleeve 19, arc extinguishing air chamber 20, arc extinguishing air chamber upper end binding post 21, arc extinguishing air chamber lower extreme binding post 22.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The solution of some embodiments of the utility model is described below with reference to fig. 1.
Example 1
The utility model discloses a series resonance withstand voltage test system of a gas insulated circuit breaker, which is shown in figure 1, and figure 1 is a schematic structural diagram of the system.
The test system mainly comprises a series resonance voltage generating device and a voltage signal collecting device, and has the main functions of connecting the voltage signal collecting device through the series resonance voltage generating device and connecting the tested gas insulated circuit breaker 16 through the voltage signal collecting device, so that the insulation performance of the tested gas insulated circuit breaker under the locking working condition caused by poor quality of an air leakage relay and a density relay is tested, and the tolerance level of the tested gas insulated circuit breaker to continuous transient overvoltage within a certain time is tested.
The series resonance voltage generating device is composed of a variable frequency power supply 2, a test transformer 7 and a reactor 10. The variable frequency power supply 2 comprises: the variable frequency power supply comprises a variable frequency power supply inlet terminal 3, a capacitance signal acquisition terminal 4, a variable frequency power supply outlet terminal 5 and a variable frequency power supply outlet 6.
Specifically, one end of a variable frequency power supply 2 is connected with an alternating current test power supply 1 through a variable frequency power supply incoming line terminal 3, and the alternating current test power supply 1 is a 380V alternating current test power supply. The other end of the variable frequency power supply 2 is connected with a test transformer incoming terminal 8 at the upper part of a test transformer 7 through a variable frequency power supply outgoing terminal 5, and a test transformer outgoing terminal 9 at the other end of the upper part of the test transformer 7 is connected with a reactor incoming terminal 11 on a reactor 10; the reactor outlet terminal 12 at the other end of the reactor 10 is connected with the capacitor upper terminal 15 of the capacitor 13 and the arc extinguishing chamber upper end connecting terminal 21 of the tested gas insulated circuit breaker 16 in sequence. Grounding ends are arranged on the shells of the variable frequency power supply 2, the test transformer 7 and the reactor 10.
The gas-insulated test circuit breaker 16 includes: the base 17, the barometer 18, the support sleeve 19, the arc extinguishing chamber 20, the arc extinguishing chamber upper end connecting terminal 21 and the arc extinguishing chamber lower end connecting terminal 22. The upper part of a base 17 of the tested gas insulated circuit breaker 16 is connected with a barometer 18, the upper part of the barometer 18 is connected with an arc extinguishing chamber 20 through a support sleeve 19 in a sleeved mode, an arc extinguishing chamber upper end wiring terminal 21 is arranged on the upper part of the arc extinguishing chamber 20, an arc extinguishing chamber lower end wiring terminal 22 is arranged on the lower part of the arc extinguishing chamber 20, and meanwhile the shell of the tested gas insulated circuit breaker 16 is further connected with a grounding end. During the test, the wiring terminal at the lower end of the arc extinguishing gas chamber of the gas insulated switchgear is grounded. The tested gas insulated switchgear 16 may also be made of the same type of commercially available products.
The voltage signal acquisition device is composed of a capacitor 13, and the capacitor 13 comprises: a capacitance signal output terminal 14 and a capacitor upper terminal 15, and a grounding terminal is further provided on the housing of the capacitor 13. The capacitor 13 can also be selected from the existing similar commercial products.
The capacitor 13 is connected with a reactor outlet terminal 12 and an arc extinguishing air chamber upper end connecting terminal 21 on a tested gas insulated circuit breaker 16 through a capacitor upper terminal 15; and a capacitance signal output terminal 14 on the capacitor 13 is connected with a capacitance signal acquisition terminal 4 on the variable-frequency power supply 2, so that voltage acquisition is realized.
Example 2
The utility model also provides an embodiment, which is a series resonance withstand voltage test system of the gas insulated circuit breaker.
In a specific test, the lower end terminal 22 of the arc extinguishing chamber of the target gas insulated circuit breaker 16, the shell of the capacitor 13, the shell of the reactor 10, the shell of the test transformer 7 and the shell of the variable frequency power supply 2 are all grounded.
The device has the voltage regulation tuning function through the series resonance voltage generating device. During test operation, the series resonance voltage generating device raises 380V test voltage to required test voltage through a series resonance principle, and can meet the voltage withstand test requirements of any working condition, such as a gas insulated circuit breaker arc extinguishing air chamber under a low-voltage working condition, so that the insulation performance of the gas insulated circuit breaker under the working condition of air leakage, poor quality of a density relay and locking is tested, and the tolerance level of the gas insulated circuit breaker to continuous transient overvoltage in a certain time is tested.
Example 3
The utility model also provides an embodiment, the utility model relates to a series resonance withstand voltage test system of the gas insulated circuit breaker, and the operation steps are as follows when the system is implemented specifically:
step 1, ensuring that all test equipment and tested equipment are in a normal running state, a base is flat, and a shell is grounded;
and 7, turning off the variable frequency power supply, and performing discharge treatment on all the test equipment.
The tested equipment is a gas insulated circuit breaker and is a zero gauge pressure gas insulated circuit breaker.
Example 4
The utility model also provides an embodiment, and the specific implementation steps of the series resonance withstand voltage test system for the gas insulated circuit breaker are shown in embodiment 2.
The tested equipment is a gas insulated circuit breaker and is a low gauge pressure gas insulated circuit breaker.
In the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "connected" and "fixed" are to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, or an integral connection. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the indicated devices or units must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the utility model without departing from the spirit and scope of the utility model, which is to be covered by the claims.
Claims (8)
1. The utility model provides a series resonance withstand voltage test system of gas insulated switchgear, characterized by: the device comprises a series resonance voltage generating device and a voltage signal collecting device, wherein the series resonance voltage generating device is connected with the voltage signal collecting device, and then the voltage signal collecting device is connected with a tested gas insulation circuit breaker (16); the series resonance voltage generating device comprises a variable frequency power supply (2), a test transformer (7) and a reactor (10) which are connected; the voltage signal acquisition device is composed of a capacitor (13), the upper part of the capacitor (13) is provided with a capacitor upper terminal (15), the lower part of the capacitor (13) is provided with a capacitance signal output terminal (14), and the shell of the capacitor (13) is also provided with a grounding terminal.
2. The series resonance withstand voltage test system of the gas insulated switchgear according to claim 1, wherein: the variable frequency power supply (2) comprises: the variable frequency power supply comprises a variable frequency power supply inlet terminal (3), a capacitance signal acquisition terminal (4), a variable frequency power supply outlet terminal (5) and a variable frequency power supply outlet (6); one end of the variable frequency power supply (2) is connected with the alternating current test power supply (1) through a variable frequency power supply incoming line terminal (3); the other end of the variable frequency power supply (2) is connected with a test transformer incoming terminal (8) at the upper part of a test transformer (7) through a variable frequency power supply outgoing terminal (5), and a test transformer outgoing terminal (9) at the other end of the upper part of the test transformer (7) is connected with a reactor incoming terminal (11) on a reactor (10); the reactor outlet terminal (12) at the other end of the reactor (10) is sequentially connected with the capacitor upper terminal (15) on the capacitor (13) and the arc extinguishing air chamber upper end wiring terminal (21) on the tested gas insulated circuit breaker (16).
3. The series resonance withstand voltage test system of the gas insulated switchgear according to claim 2, wherein: the alternating current test power supply (1) is a 380V alternating current test power supply.
4. The series resonance withstand voltage test system of the gas insulated switchgear according to claim 1, wherein: and grounding ends are arranged on the shells of the variable frequency power supply (2), the test transformer (7) and the reactor (10).
5. The series resonance withstand voltage test system of the gas insulated switchgear according to claim 1, wherein: the gas-insulated circuit breaker (16) to be tested comprises: the gas pressure meter comprises a base (17), a gas pressure meter (18), a support sleeve (19), an arc extinguishing gas chamber (20), an arc extinguishing gas chamber upper end wiring terminal (21) and an arc extinguishing gas chamber lower end wiring terminal (22); the gas-insulated circuit breaker testing device is characterized in that a gas pressure meter (18) is connected to the upper portion of a base (17) of a tested gas-insulated circuit breaker (16), an arc extinguishing air chamber (20) is connected to the upper portion of the gas pressure meter (18) through a supporting sleeve (19) in a sleeved mode, an arc extinguishing air chamber upper end wiring terminal (21) is arranged on the upper portion of the arc extinguishing air chamber (20), an arc extinguishing air chamber lower end wiring terminal (22) is arranged on the lower portion of the arc extinguishing air chamber (20), and meanwhile a grounding end is further connected to a shell of the tested gas-insulated circuit breaker (16).
6. The series resonance withstand voltage test system of the gas insulated switchgear according to claim 1, wherein: the capacitor (13) is connected with a reactor outlet terminal (12) and an arc extinguishing air chamber upper end wiring terminal (21) on a tested gas insulated circuit breaker (16) through a capacitor upper terminal (15); and a capacitance signal output terminal (14) on the capacitor (13) is connected with a capacitance signal acquisition terminal (4) on the variable-frequency power supply (2).
7. The series resonance withstand voltage test system of the gas insulated switchgear according to claim 1, wherein: the test system is characterized in that the test equipment for testing is a gas insulated circuit breaker.
8. The series resonance withstand voltage test system of the gas insulated switchgear according to claim 7, wherein: the gas insulated circuit breaker is a zero gauge pressure gas insulated circuit breaker or a low gauge pressure gas insulated circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121768572.6U CN216485334U (en) | 2021-07-31 | 2021-07-31 | Series resonance withstand voltage test system of gas insulated circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121768572.6U CN216485334U (en) | 2021-07-31 | 2021-07-31 | Series resonance withstand voltage test system of gas insulated circuit breaker |
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| Publication Number | Publication Date |
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| CN216485334U true CN216485334U (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121768572.6U Active CN216485334U (en) | 2021-07-31 | 2021-07-31 | Series resonance withstand voltage test system of gas insulated circuit breaker |
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2021
- 2021-07-31 CN CN202121768572.6U patent/CN216485334U/en active Active
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