CN110824406A

CN110824406A - Ferromagnetic resonance test device for capacitive voltage transformer

Info

Publication number: CN110824406A
Application number: CN201911098934.2A
Authority: CN
Inventors: 卫爱静
Original assignee: Yancheng Leiji Environmental Protection Technology Co Ltd
Current assignee: Yancheng Leiji Environmental Protection Technology Co Ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-02-21

Abstract

The invention discloses a ferromagnetic resonance test device for a capacitive voltage transformer, which comprises a fast-assembly fixed seat, a semiconductor radiating fin and a test device oil tank, wherein a superposed column is fixed in the middle of the upper end of the test device oil tank, and a capacitive voltage divider is fixed on the periphery of the superposed column; the semiconductor cooling fin is used for refrigerating, so that the temperature of oil in the oil tank of the testing device is reduced, the low-voltage terminal, the lead and the medium-voltage terminal of the capacitor in the oil tank of the testing device are in the optimal temperature environment, and the accuracy of the test is ensured.

Description

Ferromagnetic resonance test device for capacitive voltage transformer

Technical Field

The invention belongs to the technical field of ferromagnetic resonance test devices, and particularly relates to a ferromagnetic resonance test device for a capacitive voltage transformer.

Background

Ferroresonance is a form of self-excited oscillation of an electric power system, and is a persistent and high-amplitude resonance overvoltage phenomenon caused by the saturation action of ferromagnetic inductors such as a transformer and a voltage transformer. Although ferromagnetic resonance has been researched at home and abroad, and many resonance elimination measures are also taken in the operation of a power grid, ferromagnetic resonance accidents of a low-current grounding system still frequently occur. When a regulator delays incident handling by mistakenly troubleshooting ferroresonance as a ground or wire fault, major damage often occurs to primary equipment.

The prior art has the following problems: the existing ferromagnetic resonance test device for the capacitive voltage transformer has the problem that terminals are inconvenient to fix and install when in use, so that the use is troublesome, and meanwhile, the heat dissipation efficiency of an oil tank of the test device is low, so that the test effect is influenced.

Disclosure of Invention

To solve the problems set forth in the background art described above. The invention provides a ferromagnetic resonance test device for a capacitive voltage transformer, which has the characteristics of simple structure, convenience in fixed installation and good heat dissipation.

In order to achieve the purpose, the invention provides the following technical scheme: a ferromagnetic resonance test device for a capacitive voltage transformer comprises a fast-assembly fixed seat, a semiconductor cooling fin and a test device oil tank, a stack column is fixed in the middle of the upper end of the oil tank of the testing device, a capacitive voltage divider is fixed on the periphery of the stack column, a capacitor low-voltage terminal is fixed on one side of the upper end inside the oil tank of the test device, a capacitor medium-voltage terminal is fixed on the other side of the upper end inside the oil tank of the test device, the quick-mounting fixed seats are fixed at two ends of the surface of the oil tank of the testing device, a low-voltage leading-out sleeve is fixed at one end of the oil tank of the testing device, which is close to a low-voltage terminal of a capacitor, a medium-voltage leading-out sleeve is fixed at one end of the test device oil tank close to the medium-voltage terminal of the capacitor, semiconductor radiating fins are uniformly arranged inside the test device oil tank, and lead wires are connected between the capacitor low-voltage terminal and the low-voltage leading-out sleeve and between the medium-voltage leading-out sleeve and the capacitor medium-voltage terminal.

Preferably, the fast-assembling fixing base includes fixed bayonet lock, fixed cassette, connecting block, fixed cover seat, coupling spring, reset spring and fixed slot, wherein, the side of test device oil tank is fixed with fixed cover seat, the surface of fixed cover seat is provided with the fixed slot, the centre of fixed slot is fixed with fixed cassette, be provided with reset spring in the upper end spout of fixed cover seat, reset spring's the other end is connected with fixed bayonet lock, the centre of fixed cover seat is fixed with coupling spring, coupling spring's the other end is connected with the connecting block.

Preferably, the low-voltage extraction sleeve and the medium-voltage extraction sleeve are identical in model and only different in installation position.

Preferably, the refrigeration end of the semiconductor cooling fin is positioned inside the oil tank of the test device.

Preferably, the connecting block is connected with a lead wire, and the connecting block is attached to the surface of the fixed clamping seat.

Preferably, the connecting spring is in an expansion state under a natural state, and the connecting block is in sliding connection in the fixed sleeve seat.

Preferably, the return spring is in an expanded state in a natural state, and the fixed bayonet lock is in sliding connection with the fixed sleeve seat.

Preferably, the fixed clamping seat is of a T-shaped structure, and a clamping groove corresponding to the fixed clamping pin is formed in the upper end of the fixed clamping seat.

Compared with the prior art, the invention has the beneficial effects that:

1. the fixing clamping pin is compressed to be retracted into the sliding groove of the fixing sleeve seat, the fixing clamping seat fixed with the low-voltage leading-out sleeve and the medium-voltage leading-out sleeve is clamped and fixed in the fixing groove, then the fixing clamping pin is loosened, and the fixing clamping pin is clamped in the clamping groove of the fixing clamping pin under the action of the reset spring, so that the low-voltage leading-out sleeve and the medium-voltage leading-out sleeve are quickly fixed;

2. the semiconductor cooling fin is used for refrigerating, so that the temperature of oil in the oil tank of the testing device is reduced, the low-voltage terminal, the lead and the medium-voltage terminal of the capacitor in the oil tank of the testing device are in the optimal temperature environment, and the accuracy of the test is ensured.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the quick mount mounting of the present invention;

FIG. 3 is a top view of the quick mount mounting of the present invention;

in the figure: 1. stacking columns; 2. a capacitive voltage divider; 3. a capacitor low voltage terminal; 4. a low-pressure lead-out sleeve; 5. a fast-assembling fixed seat; 51. fixing the bayonet lock; 52. fixing the card holder; 53. connecting blocks; 54. a fixed sleeve seat; 55. a connecting spring; 56. a return spring; 57. fixing grooves; 6. a semiconductor heat sink; 7. a test device oil tank; 8. a medium pressure lead-out sleeve; 9. a lead wire; 10. a capacitor medium voltage terminal.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides the following technical solutions: a ferromagnetic resonance test device for a capacitive voltage transformer comprises a quick-mounting fixed seat 5, a semiconductor cooling fin 6 and a test device oil tank 7, wherein a stack column 1 is fixed in the middle of the upper end of the test device oil tank 7, a capacitive voltage divider 2 is fixed on the periphery of the stack column 1, a capacitor low-voltage terminal 3 is fixed on one side of the inner upper end of the test device oil tank 7, a capacitor medium-voltage terminal 10 is fixed on the other side of the inner upper end of the test device oil tank 7, the quick-mounting fixed seats 5 are fixed on two ends of the surface of the test device oil tank 7, a low-voltage lead-out sleeve 4 is fixed on one end of the test device oil tank 7 close to the capacitor low-voltage terminal 3, a medium-voltage lead-out sleeve 8 is fixed on one end of the test device oil tank 7 close to the capacitor medium-voltage terminal 10, in order to make the models uniform, the, in order to facilitate cooling, the refrigerating end of the semiconductor cooling fin 6 is located inside an oil tank 7 of the testing device, and leads 9 are connected between the capacitor low-voltage terminal 3 and the low-voltage lead-out sleeve 4 and between the medium-voltage lead-out sleeve 8 and the capacitor medium-voltage terminal 10.

The fast-assembling fixing seat 5 comprises a fixing clamping pin 51, a fixing clamping seat 52, a connecting block 53, a fixing sleeve seat 54, a connecting spring 55, a return spring 56 and a fixing groove 57, wherein the fixing sleeve seat 54 is fixed on the side edge of the oil tank 7 of the test device, the fixing groove 57 is arranged on the surface of the fixing sleeve seat 54, the fixing clamping seat 52 is fixed in the middle of the fixing groove 57, the return spring 56 is arranged in a chute at the upper end of the fixing sleeve seat 54, the other end of the return spring 56 is connected with the fixing clamping pin 51, in order to facilitate clamping and fixing, the return spring 56 is in an expansion state under a natural state, the fixing clamping pin 51 is in sliding connection with the fixing sleeve seat 54, in order to improve fixing firmness, the fixing clamping seat 52 is arranged to be in a T-shaped structure, a clamping groove corresponding to the fixing clamping pin 51 is arranged at the upper end of, for convenience of adhesion and electric conduction, the connecting block 53 is connected with a lead wire 9, the connecting block 53 is adhered to the surface of the fixed clamping seat 52, for convenience of adhesion, the connecting spring 55 is in an expansion state in a natural state, and the connecting block 53 is in sliding connection in the fixed sleeve seat 54.

The semiconductor refrigerating sheet 6 in the invention is a known technology widely applied to daily life, and has the working principle that: by utilizing the Peltier effect of semiconductor materials, when direct current passes through a galvanic couple formed by connecting two different semiconductor materials in series, heat can be absorbed and released at two ends of the galvanic couple respectively, so that the aim of refrigeration can be fulfilled, and the model TEC1-12715 is used.

The working principle and the using process of the invention are as follows: when the invention is used, the device is arranged at a proper position, the fixed bayonet 51 is compressed to be retracted into the sliding groove of the fixed sleeve seat 54, the fixing clamping seat 52 fixed with the low-voltage leading-out sleeve 4 and the medium-voltage leading-out sleeve 8 is clamped and fixed in the fixing groove 57, then, the fixing latch 51 is released, the fixing latch 51 is latched to the latching groove of the fixing latch 51 by the return spring 56, so that the low-voltage leading-out sleeve 4 and the medium-voltage leading-out sleeve 8 are quickly fixed, external equipment is connected with the low-voltage leading-out sleeve 4 and the medium-voltage leading-out sleeve 8 by using a lead, and then, performing a ferromagnetic resonance test, refrigerating by using the semiconductor cooling fin 6, reducing the temperature of oil in the oil tank 7 of the test device, ensuring that the low-voltage terminal 3, the lead 9 and the medium-voltage terminal 10 of the capacitor in the oil tank 7 of the test device are in an optimal temperature environment, ensuring the accuracy of the test, and being portable in use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a capacitive voltage is ferromagnetic resonance test device for mutual-inductor, includes fast-assembling fixing base (5), semiconductor fin (6) and test device oil tank (7), its characterized in that: be fixed with in the middle of the upper end of test device oil tank (7) and fold post (1), the periphery of folding post (1) is fixed with capacitive voltage divider (2), the inside upper end one side of test device oil tank (7) is fixed with condenser low voltage terminal (3), the inside upper end opposite side of test device oil tank (7) is fixed with condenser middling pressure terminal (10), the surperficial both ends of test device oil tank (7) are fixed with fast-assembling fixing base (5), the one end that test device oil tank (7) are close to condenser low voltage terminal (3) is fixed with the low pressure and draws forth sleeve pipe (4), the one end that test device oil tank (7) are close to condenser middling pressure terminal (10) is fixed with the middling pressure and draws sleeve pipe (8), the inside of test device oil tank (7) evenly is provided with semiconductor fin (6), condenser low voltage terminal (3) and low pressure draw between sleeve pipe (4) and middling pressure draw sleeve pipe (8) and the leads (9) are connected between the sub-terminals (10).

2. The ferroresonance testing apparatus for the capacitive voltage transformer as recited in claim 1, wherein: the fast-assembling fixing base (5) comprises a fixing clamping pin (51), a fixing clamping base (52), a connecting block (53), a fixing sleeve base (54), a connecting spring (55), a reset spring (56) and a fixing groove (57), wherein the side edge of the test device oil tank (7) is fixed with the fixing sleeve base (54), the surface of the fixing sleeve base (54) is provided with the fixing groove (57), the middle of the fixing groove (57) is fixed with the fixing clamping base (52), the reset spring (56) is arranged in a sliding groove in the upper end of the fixing sleeve base (54), the other end of the reset spring (56) is connected with the fixing clamping pin (51), the middle of the fixing sleeve base (54) is fixed with the connecting spring (55), and the other end of the connecting spring (55) is connected with the connecting block (53.

3. The ferroresonance testing apparatus for the capacitive voltage transformer as recited in claim 1, wherein: the low-voltage leading-out sleeve (4) and the medium-voltage leading-out sleeve (8) are the same in model and only different in installation position.

4. The ferroresonance testing apparatus for the capacitive voltage transformer as recited in claim 1, wherein: and the refrigerating end of the semiconductor cooling fin (6) is positioned inside the oil tank (7) of the testing device.

5. The ferroresonance testing apparatus for the capacitive voltage transformer as recited in claim 2, wherein: the connecting block (53) is connected with a lead (9) through a lead, and the connecting block (53) is attached to the surface of the fixed clamping seat (52).

6. The ferroresonance testing apparatus for the capacitive voltage transformer as recited in claim 2, wherein: the connecting spring (55) is in an expansion state under a natural state, and the connecting block (53) is in sliding connection in the fixed sleeve seat (54).

7. The ferroresonance testing apparatus for the capacitive voltage transformer as recited in claim 2, wherein: the return spring (56) is in an expansion state under a natural state, and the fixed bayonet lock (51) is connected with the fixed sleeve seat (54) in a sliding mode.

8. The ferroresonance testing apparatus for the capacitive voltage transformer as recited in claim 2, wherein: the fixed clamping seat (52) is of a T-shaped structure, and a clamping groove corresponding to the fixed clamping pin (51) is formed in the upper end of the fixed clamping seat (52).