Multi-voltage conversion structure of intelligent load test equipment

Abstract

The utility model relates to a multi-voltage conversion structure of intelligent load test equipment, which relates to the field of power supply detection equipment and comprises a first A-phase connecting end, a second A-phase connecting end, a first B-phase connecting end, a second B-phase connecting end, a first C-phase connecting end, a second C-phase connecting end, a load A-phase wiring bar, a load B-phase wiring bar and a load C-phase wiring bar. The second A-phase connecting end is electrically connected with the load A-phase wiring bar, the second B-phase connecting end is electrically connected with the load B-phase wiring bar, and the second C-phase connecting end is electrically connected with the load C-phase wiring bar; comprising a first A-phase connecting end, a second A-phase connecting end, a first B-phase connecting end, a second B-phase connecting end, a first C-phase connecting end and a second C-phase connecting end. The usability of the power supply detection equipment can be improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of power supply detection equipment, in particular to a multiple voltage conversion structure of intelligent load test equipment. BACKGROUND

[0002] With the rapid development of power electronics technology, standby power supply becomes an indispensable emergency equipment in various application places. The standby power supply is an emergency independent power supply system composed of a generator set and a control system after power grid power failure. The system is not working under normal conditions, so it needs to be connected to a load test equipment regularly to detect the power supply system and test whether the power supply can work normally under emergency conditions.

[0003] In the fields of ships, aerospace, military industry, communication, solar photovoltaic, wind, fire, nuclear power, finance, coal, chemical industry, metal mining, oil exploitation and the like, the power supply system needs to be detected, and different requirements are required for voltage. In the equipment conversion area, the star-delta conversion mode is used for connection to change the use voltage of the equipment. CONTENT OF THE INVENTION

[0004] In order to change the use voltage of the intelligent load test equipment without making great system changes, the application provides a multiple voltage conversion structure of intelligent load test equipment.

[0005] The multiple voltage conversion structure of intelligent load test equipment provided by the application adopts the following technical scheme:

[0006] A multiple voltage conversion structure of intelligent load test equipment, comprising a first A-phase connection end, a second A-phase connection end, a first B-phase connection end, a second B-phase connection end, a first C-phase connection end, a second C-phase connection end, a load A-phase wiring panel, a load B-phase wiring panel and a load C-phase wiring panel.

[0007] The second A-phase connection end is electrically connected with the load A-phase wiring panel, the second B-phase connection end is electrically connected with the load B-phase wiring panel, and the second C-phase connection end is electrically connected with the load C-phase wiring panel.

[0008] The first A-phase connection end, the second A-phase connection end, the first B-phase connection end, the second B-phase connection end, the first C-phase connection end and the second C-phase connection end are provided with a star connection structure or a delta connection structure.

[0009] The first A-phase connection end and the second A-phase connection end, the first B-phase connection end and the second B-phase connection end, and the first C-phase connection end and the second C-phase connection end are respectively electrically connected with a load module.

[0010] By adopting the technical scheme, the star connection structure and the triangle connection structure can be switched according to actual testing needs, the availability of the power detection equipment is effectively improved, and the use voltage of the intelligent load testing equipment can be changed without making large system changes.

[0011] Preferably, the triangle connection structure comprises three triangle short connection rows, and the three triangle short connection rows are connected between the second A-phase connection end and the first B-phase connection end, the second B-phase connection end and the first C-phase connection end, and the first A-phase connection end and the second C-phase connection end, respectively.

[0012] By adopting the technical scheme, the device can be switched to the triangle connection structure by the triangle short connection row.

[0013] Preferably, the star connection structure comprises three star short connection rows, and the three star short connection rows are connected between the first B-phase connection end and the first C-phase connection end, the first C-phase connection end and the first A-phase connection end, and the first A-phase connection end and the neutral line N connection row, respectively.

[0014] By adopting the technical scheme, the device can be switched to the star connection structure by the star short connection row.

[0015] Preferably, the load module comprises a resistor.

[0016] Preferably, the load module comprises a resistor and an inductor, and the resistor and the inductor are arranged in parallel.

[0017] Preferably, the load module comprises a resistor, an inductor and a capacitor, and the resistor, the inductor and the capacitor are arranged in parallel.

[0018] In summary, the intelligent load testing equipment multi-voltage conversion structure has at least one of the following beneficial technical effects:

[0019] 1. By adopting the star connection structure and the triangle connection structure, the connection type can be switched according to actual testing needs, the availability of the power detection equipment is effectively improved, and the use voltage of the intelligent load testing equipment can be changed without making large system changes. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram for showing a star connection mode of the embodiment of the application.

[0021] Figure 2 is a schematic diagram for showing a triangle connection mode of the embodiment of the application.

[0022] Figure 3is a schematic diagram for showing star connection mode under resistive load according to an embodiment of the present application;

[0023] Figure 4 is a schematic diagram for showing triangle connection mode under resistive load according to an embodiment of the present application.

[0024] Figure 5 is a schematic diagram for showing star connection mode under resistive-inductive integrated load according to an embodiment of the present application.

[0025] Figure 6 is a schematic diagram for showing triangle connection mode under resistive-inductive integrated load according to an embodiment of the present application.

[0026] Figure 7 is a schematic diagram for showing star connection mode under resistive-inductive-capacitive integrated load according to an embodiment of the present application.

[0027] Figure 8 is a schematic diagram for showing triangle connection mode under resistive-inductive-capacitive integrated load according to an embodiment of the present application.

[0028] Legend: 1, first A-phase connection end; 2, second A-phase connection end; 3, first B-phase connection end; 4, second B-phase connection end; 5, first C-phase connection end; 6, second C-phase connection end; 7, star short-circuit row; 8, triangle short-circuit row; 9, load A-phase wiring row; 10, load B-phase wiring row; 11, load C-phase wiring row; 12, neutral line N connection row. DETAILED DESCRIPTION

[0029] The following will be described in detail in combination with the accompanying Figures 1-8 The present application will be further described in detail.

[0030] Embodiment 1

[0031] The embodiment of the present application discloses a kind of multiple voltage conversion structure of intelligent load test equipment.It is described with reference to Figure 1 It mainly includes first A-phase connection end 1, second A-phase connection end 2, first B-phase connection end 3, second B-phase connection end 4, first C-phase connection end 5, second C-phase connection end 6, load A-phase wiring row 9, load B-phase wiring row 10 and load C-phase wiring row 11.

[0032] Second A-phase connection end 2 and load A-phase wiring row 9 are electrically connected, second B-phase connection end 4 and load B-phase wiring row 10 are electrically connected, and second C-phase connection end 6 and load C-phase wiring row 11 are electrically connected.

[0033] First A-phase connection end 1, second A-phase connection end 2, first B-phase connection end 3, second B-phase connection end 4, first C-phase connection end 5, second C-phase connection end 6 are provided with star connection structure or triangle connection structure.

[0034] The load module is electrically connected between the first A-phase connecting end 1 and the second A-phase connecting end 2, between the first B-phase connecting end 3 and the second B-phase connecting end 4, and between the first C-phase connecting end 5 and the second C-phase connecting end 6.

[0035] The star connection structure and the delta connection structure can facilitate an operator to switch the connection type according to actual testing needs, effectively improve the usability of the power detection equipment, and facilitate the operator to change the use voltage of the equipment without making large system changes to the intelligent load testing equipment.

[0036] With reference to Figure 1 , the delta connection structure includes three delta shorting rows 8, which are connected between the second A-phase connecting end 2 and the first B-phase connecting end 3, between the second B-phase connecting end 4 and the first C-phase connecting end 5, and between the first A-phase connecting end 1 and the second C-phase connecting end 6, to form the delta connection structure as shown in Figure 3 .

[0037] The delta shorting row 8 can facilitate the operator to switch the equipment to the delta connection structure.

[0038] With reference to Figure 2 , the star connection structure includes three star shorting rows 7, which are connected between the first B-phase connecting end 3 and the first C-phase connecting end 5, between the first C-phase connecting end 5 and the first A-phase connecting end 1, and between the first A-phase connecting end 1 and the neutral line N connecting row 12, to form the star connection structure as shown in Figure 4 .

[0039] The star shorting row 7 can facilitate the operator to switch the equipment to the star connection structure.

[0040] With reference to Figure 3 , the load module is a resistive load, and the resistive load is connected in the star connection structure. Among them, the phase voltage is AC400V, the line voltage is AC692.8V, the total three-phase power is 4800KW, and the power resistance value of the three resistors is 1600KW / 0.1Ω.

[0041] With reference to Figure 4 , the load module is a resistive load, and the resistive load is connected in the delta connection structure. Among them, the phase and line voltage is AC400V, the total three-phase power is 4800KW, and the power resistance value of the three resistors is 1600KW / 0.1Ω.

[0042] Embodiment 2

[0043] In this embodiment, the load module is set to a resistance-inductance parallel structure.

[0044] With reference toFigure 5 It is a star connection structure under resistance inductance load. Wherein, phase voltage: AC 400V line voltage AC 692.8V, total power of resistor: 4800KW, total power of reactor: 3600Kvar rated frequency 50Hz, total apparent power: 6MVA, power resistance value of resistance: 1600KW / 0.1Ω, power inductance value of inductance: 1200kvar / 0.141mH.

[0045] Reference Figure 6 It is a delta connection structure under resistance inductance load. Wherein, phase voltage, line voltage: AC 400V, total power of resistor: 4800KW, total power of reactor: 3600Kvar rated frequency 50Hz, total apparent power: 6MVA, power resistance value of resistance: 1600KW / 0.1Ω, power inductance value of inductance: 1200kvar / 0.141mH.

[0046] Example 3

[0047] In this embodiment, the load module is set as resistance inductance capacitance parallel structure.

[0048] Reference Figure 7 It is a star connection structure under resistance inductance capacitance. Wherein, phase voltage: AC 400V line voltage AC 692.8V, total power of resistor: 4800KW, total power of reactor: 3600Kvar rated frequency 50Hz, total power of capacitor: 3600Kvar rated frequency 50Hz, power resistance value of resistance: 1600KW / 0.1Ω, power inductance value of inductance: 1200kvar / 0.141mH, power capacitance value of inductance: 1200kvar / 23885μF.

[0049] Reference Figure 8 It is a delta connection structure under resistance inductance capacitance. Wherein, AC 400V, total power of resistor: 4800KW, total power of reactor: 3600Kvar rated frequency 50Hz, total power of capacitor: 3600Kvar rated frequency 50Hz, power resistance value of resistance: 1600KW / 0.1Ω, power inductance value of inductance: 1200kvar / 0.141mH, power capacitance value of inductance: 1200kvar / 23885μF.

[0050] It should be noted that in some other embodiments, the load module can be replaced and optimized according to the actual use, which is not limited here.

[0051] The implementation principle of the various voltage conversion structures of the intelligent load test equipment embodiment of the application is that: through the star connection structure and the delta connection structure, an operator can conveniently switch the connection type according to the actual test requirement, effectively improving the availability of the power supply detection equipment, and the operator can conveniently change the use voltage of the intelligent load test equipment without making large system changes to the intelligent load test equipment.

[0052] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A multi-voltage conversion structure of an intelligent load test device, characterized in that: The first A-phase connecting end (1), the second A-phase connecting end (2), the first B-phase connecting end (3), the second B-phase connecting end (4), the first C-phase connecting end (5), the second C-phase connecting end (6), the load A-phase busbar (9), the load B-phase busbar (10), and the load C-phase busbar (11) are included. The second A-phase connecting end (2) is electrically connected with the load A-phase busbar (9), the second B-phase connecting end (4) is electrically connected with the load B-phase busbar (10), and the second C-phase connecting end (6) is electrically connected with the load C-phase busbar (11). The first A-phase connecting end (1), the second A-phase connecting end (2), the first B-phase connecting end (3), the second B-phase connecting end (4), the first C-phase connecting end (5), and the second C-phase connecting end (6) are provided with a star connection structure or a delta connection structure. The first A-phase connecting end (1) and the second A-phase connecting end (2), the first B-phase connecting end (3) and the second B-phase connecting end (4), and the first C-phase connecting end (5) and the second C-phase connecting end (6) are respectively electrically connected with a load module.

2. The multi-voltage conversion structure of the intelligent load testing device according to claim 1, wherein, The delta connection structure includes three delta short connection busbars (8), and the three delta short connection busbars (8) are respectively connected between the second A-phase connecting end (2) and the first B-phase connecting end (3), the second B-phase connecting end (4) and the first C-phase connecting end (5), and the first A-phase connecting end (1) and the second C-phase connecting end (6).

3. The voltage conversion structure of claim 2, wherein, The star connection structure includes three star short connection busbars (7), and the three star short connection busbars (7) are respectively connected between the first B-phase connecting end (3) and the first C-phase connecting end (5), the first C-phase connecting end (5) and the first A-phase connecting end (1), and the first A-phase connecting end (1) and the neutral line N connecting busbar (12).

4. The multi-voltage conversion structure of the intelligent load testing device according to claim 3, wherein, The load module includes a resistor.

5. The voltage conversion structure of claim 3, wherein, The load module includes a resistor and an inductor, and the resistor and the inductor are arranged in parallel.

6. The voltage conversion structure of claim 3, wherein, The load module includes a resistor, an inductor, and a capacitor, and the resistor, the inductor, and the capacitor are arranged in parallel.

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