CN210954258U - High-power direct current relay transient impulse current testing device - Google Patents
High-power direct current relay transient impulse current testing device Download PDFInfo
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- CN210954258U CN210954258U CN201921493424.0U CN201921493424U CN210954258U CN 210954258 U CN210954258 U CN 210954258U CN 201921493424 U CN201921493424 U CN 201921493424U CN 210954258 U CN210954258 U CN 210954258U
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Abstract
The utility model provides a high-power direct current relay transient state impulse current testing arrangement, including dc power supply able to programme, energy storage capacitor box and load circuit, dc power supply able to programme with energy storage capacitor box parallel connection, energy storage capacitor box includes that a plurality of is connected in series-parallel each other and inserts the super capacitor or the film capacitance of the parallelly connected branch road of energy storage capacitor box, energy storage capacitor box with the parallelly connected branch road positive terminal of dc power supply able to programme is equipped with switch K1, load circuit includes inductance load case able to programme and a plurality of resistance load case able to programme, energy storage capacitor box with it has the quilt survey sample to still establish ties between the inductance load case able to programme, inductance load case able to programme with resistance load case able to programme is used for setting up required inductance and resistance parameter of test under rated condition and the transient state impulse current. The utility model discloses satisfy high-power and the heavy current demand of high-power direct current relay transient state impulse current test, practice thrift equipment input cost.
Description
Technical Field
The utility model belongs to the technical field of the current test, concretely relates to high-power direct current relay transient state impulse current testing arrangement.
Background
With the development of new energy industry, the application of the high-power direct-current relay is more and more, particularly in the field of new energy power generation and new energy automobiles, the high-power direct-current relay is a core component, and the reliability and safety of the whole system are determined by the performance of the high-power direct-current relay, so that the full test and authentication of the high-power direct-current relay are particularly important. In order to assess the maximum current tolerance of the direct-current relay, the IEC61810-10 standard proposes the impact capability of detecting 4 times rated current, the load is an inductive load, and the duration of the impact current is less than 7.5 ms. At present, the current level of a high-power direct-current relay is applied to more than 1000A, the voltage is more than 1000V, 4 times of rated current test is required, the test condition needs to be provided with 1000V output, the direct-current power supply with the instantaneous current capability of 4000A, namely, the power level of the direct-current power supply needs to be more than 2MW (2 times of overload), the manufacturing cost of a test platform is very high, the demand of the power distribution capacity (2MW) is overlarge, most laboratories cannot be met, and therefore other modes are required to meet the test.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high-power direct current relay transient state impulse current testing arrangement satisfies high-power and the heavy current demand of high-power direct current relay transient state impulse current test, practices thrift the equipment input cost.
The utility model provides a following technical scheme:
a high-power DC relay transient impulse current testing device comprises a programmable DC power supply, an energy storage capacitor cabinet and a load circuit, the programmable direct current power supply is connected with the energy storage capacitor cabinet in parallel, the energy storage capacitor cabinet comprises a plurality of super capacitors or thin film capacitors which are connected in series and parallel with each other and are connected into the parallel branch of the energy storage capacitor cabinet, the energy storage capacitor cabinet and the positive end of the programmable direct current power supply parallel branch are provided with a switch K1, the load circuit comprises a programmable inductive load box and a plurality of programmable resistance load boxes, the programmable inductive load box and the programmable resistance load boxes are sequentially connected with the energy storage capacitor cabinet in series, and a tested sample is also connected in series between the energy storage capacitor cabinet and the programmable inductive load box, and the programmable inductive load box and the programmable resistive load box are used for setting inductance and resistance parameters required by testing under rated working conditions and transient impact current.
Preferably, the programmable dc power supply is used for outputting a voltage required for testing.
Preferably, the programmable inductive load box comprises a plurality of air-core inductors connected in series, and is used for setting and testing the inductance parameters.
Preferably, the programmable resistance load box comprises a programmable rated resistance load box and a programmable instantaneous resistance load box which are connected in parallel, and the programmable rated resistance load box and the programmable instantaneous resistance load box are connected in series with the energy storage capacitor cabinet and are used for setting resistance parameters required by testing under rated working conditions and transient impact currents.
Preferably, a switch K2 is arranged on a parallel branch of the programmable transient resistive load box and used for switching transient impulse current.
The utility model has the advantages that: the device adopts the combination of a programmable direct current power supply and an energy storage capacitor cabinet, and meets the requirements of high power and high current of a high-power direct current relay transient impact current test by utilizing the transient high-current discharge capacity of a thin-film capacitor (super capacitor), thereby saving the equipment investment cost; the LR combination is realized by the programmable inductive load box and the programmable resistive load box, so that the LR combination is convenient for a customer to test and use, the test efficiency and the system safety are improved, and the test burden is reduced.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the circuit topology of the energy storage capacitor box of the present invention;
fig. 3 is a schematic diagram of the circuit topology of the programmable inductive load box of the present invention;
fig. 4 is a schematic diagram of the circuit topology of the programmable resistance load box of the present invention.
Detailed Description
As shown in fig. 1, a high-power dc relay transient impulse current testing device includes a programmable dc power supply, an energy storage capacitor box and a load circuit, the programmable dc power supply and the energy storage capacitor box are connected in parallel, a switch K1 is provided at the positive end of the parallel branch of the energy storage capacitor box and the programmable dc power supply, the load circuit includes a programmable inductive load box and a plurality of programmable resistive load boxes, the programmable inductive load box and the programmable resistive load box are sequentially connected in series with the energy storage capacitor box, a tested sample K0 is further connected in series between the energy storage capacitor box and the programmable inductive load box, and the programmable inductive load box and the programmable resistive load box are used for setting inductance and resistance parameters required by testing under rated working conditions and transient impulse current. Furthermore, the programmable resistance load box comprises a programmable rated resistance load box and a programmable instantaneous resistance load box which are connected in parallel, the programmable rated resistance load box and the programmable instantaneous resistance load box are connected in series with the energy storage capacitor cabinet and are used for setting resistance parameters required by tests under rated working conditions and transient impact currents, and a parallel branch of the programmable instantaneous resistance load box is provided with a switch K2 for switching the transient impact currents.
As shown in fig. 1-4, the programmable dc power supply and the energy storage capacitor cabinet are combined to form a transient high-power output, which satisfies the energy required by the 4MW transient impulse current test. Specifically, the energy storage capacitor cabinet is formed by combining a plurality of super capacitors (film capacitors) in series and parallel, the requirements of high power and high current for testing the transient impact current of the high-power direct-current relay are met by utilizing the transient high-current discharge capacity of the film capacitors (super capacitors), the equipment investment cost is saved, and the low internal resistance of the capacitors is selected to ensure that the test voltage drop is small; the programmable inductive load box and the programmable resistance load box are combined into LR test parameters, the programmable inductive load box is formed by combining a plurality of hollow inductors in series, inductance L parameter setting is realized, rated working conditions and transient impact current setting are realized by the programmable rated resistance load box and the programmable instantaneous resistance load box, and LR combination is realized by the programmable inductive load box and the programmable resistance load box, so that convenience is brought to customer test use, test efficiency and system safety are improved, and test burden is reduced.
As shown in fig. 1, a working principle of a high-power dc relay transient impulse current testing device is that firstly, the output voltage of a programmable dc power supply is set as the voltage required by testing, then the dc power supply is started to charge an energy storage capacitor cabinet, so that the energy storage capacitor cabinet is charged to a set value, the dc power supply is disconnected, the inductance L and the resistance R parameters required by testing are set, and the testing requirements can be realized by controlling the switching of K0, K1 and K2 according to the time sequence, thereby solving the problem of high-power supply requirements, saving the equipment investment cost and reducing the requirement of the power distribution capacity of customers.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A high-power direct current relay transient impulse current testing device is characterized by comprising a programmable direct current power supply, an energy storage capacitor cabinet and a load circuit, the programmable direct current power supply is connected with the energy storage capacitor cabinet in parallel, the energy storage capacitor cabinet comprises a plurality of super capacitors or thin film capacitors which are connected in series and parallel with each other and are connected into the parallel branch of the energy storage capacitor cabinet, the energy storage capacitor cabinet and the positive end of the programmable direct current power supply parallel branch are provided with a switch K1, the load circuit comprises a programmable inductive load box and a plurality of programmable resistance load boxes, the programmable inductive load box and the programmable resistance load boxes are sequentially connected with the energy storage capacitor cabinet in series, and a tested sample is also connected in series between the energy storage capacitor cabinet and the programmable inductive load box, and the programmable inductive load box and the programmable resistive load box are used for setting inductance and resistance parameters required by testing under rated working conditions and transient impact current.
2. The device for testing the transient impact current of the high-power direct-current relay, according to claim 1, is characterized in that the programmable direct-current power supply is used for outputting the voltage required by the test.
3. The device for testing the transient impact current of the high-power direct-current relay according to claim 1, wherein the programmable inductive load box comprises a plurality of air-core inductors which are connected in series, and the air-core inductors are used for setting and testing the inductance parameters.
4. The device for testing the transient impact current of the high-power direct-current relay according to claim 1, wherein the programmable resistance load box comprises a programmable rated resistance load box and a programmable instantaneous resistance load box which are connected in parallel, and the programmable rated resistance load box and the programmable instantaneous resistance load box are connected in series with the energy storage capacitor cabinet and are used for setting resistance parameters required by testing under rated working conditions and transient impact current.
5. The device for testing the transient impact current of the high-power direct-current relay as claimed in claim 4, wherein a switch K2 is arranged on a parallel branch of the programmable transient resistance load box and used for switching the transient impact current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921493424.0U CN210954258U (en) | 2019-09-09 | 2019-09-09 | High-power direct current relay transient impulse current testing device |
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| CN201921493424.0U CN210954258U (en) | 2019-09-09 | 2019-09-09 | High-power direct current relay transient impulse current testing device |
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| CN210954258U true CN210954258U (en) | 2020-07-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609227A (en) * | 2019-09-09 | 2019-12-24 | 幸宗国 | High-power direct current relay transient impulse current testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609227A (en) * | 2019-09-09 | 2019-12-24 | 幸宗国 | High-power direct current relay transient impulse current testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210420 Address after: Room 101, ground floor, building 30, No.76 Qiqihar Road, Yangpu District, Shanghai Patentee after: Shaghai Hansheng Power Supply System Co.,Ltd. Address before: 215000 floor 1, building 5, No. 2358, Chang'an Road, Wujiang Economic Development Zone, Suzhou City, Jiangsu Province Patentee before: Xing Zongguo |
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| TR01 | Transfer of patent right |