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CN-224218106-U - Novel direct current magnetic bias suppression device

CN224218106UCN 224218106 UCN224218106 UCN 224218106UCN-224218106-U

Abstract

The utility model discloses a novel direct current magnetic bias suppression device, which relates to the field of power transmission equipment and comprises an equipment box, wherein an opening is formed in one side wall of the equipment box, a controller capable of transversely overturning is arranged in the opening, an electric connection base is fixedly arranged at the inner bottom of the equipment box, a plurality of resistors are arranged on the electric connection base, an n-shaped conductor is fixedly connected to one side of each resistor, and translation conducting structures used for being electrically connected with the electric connection base are arranged at the lower ends of each resistor and each n-shaped conductor. The electric push rod is controlled by the controller to drive the resistor body to transversely move, at the moment, the two T-shaped conductive heads at the lower end of the n-shaped conductive body are in conductive connection with the electric connection sheets in the corresponding T-shaped slots, the n-shaped conductive bodies participate in series connection, the effect of rapidly reducing resistance is achieved, when the controller needs to be overhauled, the mounting plate is turned over outside the equipment box to enable the mounting plate to rotate 180 degrees, and at the moment, the controller is turned over to the outside of the equipment box along with the controller, so that the overhauling is convenient.

Inventors

  • ZHAO XIANGLIANG
  • CHENG MINGWEI
  • LI JIANGHUI
  • Zhang Kailuo

Assignees

  • 新发建设有限公司

Dates

Publication Date
20260508
Application Date
20250414

Claims (10)

  1. 1. The novel direct current magnetic bias suppression device is characterized by comprising an equipment box (1), an opening (2) is formed in one side wall of the equipment box (1), a controller (3) capable of transversely overturning is arranged in the opening (2), an electric connection base (5) is fixedly arranged at the inner bottom of the equipment box (1), a plurality of resistors (7) are arranged on the electric connection base (5), an n-shaped conductor (8) is fixedly connected to one side of the resistor (7), translation conducting structures used for being communicated with the electric connection base (5) are arranged at the lower ends of the resistor (7) and the n-shaped conductor (8), the translation conducting structures are configured to disconnect the n-shaped conductor (8) from the electric connection base (5) when the resistor (7) is electrically connected with the electric connection base (5), a plurality of resistors (7) are disconnected from the electric connection base (5) when the n-shaped conductor (8) is electrically connected with the electric connection base (5), and a plurality of heat dissipation structures used for driving the resistors (7) to move along the side wall of the equipment box (1) in the width direction.
  2. 2. The novel direct current magnetic bias suppression device according to claim 1, wherein the mounting plate (201) is arranged in the opening (2), the middle parts of the upper end and the lower end of the mounting plate (201) are fixedly connected with the fixed shaft (202), shaft holes sleeved with the fixed shaft (202) are formed in the upper end face and the lower end face of the opening (2), and the controller (3) is fixedly arranged on the surface of the mounting plate (201).
  3. 3. The novel direct current magnetic bias suppression device according to claim 2, wherein rubber pads are arranged on the inner wall of the opening (2), and the periphery of the mounting plate (201) is abutted against the rubber pads.
  4. 4. The novel direct current magnetic bias suppression device according to claim 2, wherein a limiting plate (203) is fixedly connected to the middle of one side of the opening (2), and the limiting plate is abutted against the mounting plate (201) after the mounting plate rotates 180 degrees, and a connecting line of the controller (3) is connected to the inside of the equipment box (1) from the side wall of the connecting line.
  5. 5. The novel direct current magnetic bias suppression device according to claim 1, wherein one end of the electric connection base (5) is electrically connected with a neutral point joint line (6), and the other end of the electric connection base (5) extends to the outer side of the equipment box (1) through a connection lead.
  6. 6. The novel DC magnetic bias suppression device according to claim 1, characterized in that an insulating shell is arranged on the outer side of the resistor body (7), and the insulating shell is of a plate-shaped design.
  7. 7. The novel direct current magnetic bias suppression device according to claim 5, wherein the translation conducting structure comprises two T-shaped conducting heads (12), the resistor body (7) and the two T-shaped conducting heads (12) at the lower end of the n-shaped conducting body (8) are respectively positioned at the positive electrode and the negative electrode, a plurality of groups of T-shaped slots (13) which are in plug-in fit with the T-shaped conducting heads (12) are formed in the upper surface of the electric connection base (5), and electric connection pieces (14) which are electrically connected with the T-shaped conducting heads (12) are respectively arranged at the end parts of each T-shaped slot (13).
  8. 8. The novel direct current magnetic bias suppression device according to claim 7, wherein the number of each group of T-shaped slots (13) is four, the four T-shaped slots (13) are distributed on two sides of the electric connection base (5) in pairs, two T-shaped slots (13) on the same side opposite to each other correspond to the resistor body (7) and the positive electrode or the negative electrode at the lower end of the n-shaped conductor (8), the positive electrode and the negative electrode of each two adjacent groups of T-shaped slots (13) are electrically connected, and the connecting lead and the neutral point joint line (6) are electrically connected with the positive electrode and the negative electrode in the T-shaped slots (13) respectively.
  9. 9. The novel direct current magnetic bias suppression device according to claim 1, wherein the driving structure comprises two sliding rods (10) fixedly connected to the side wall of the resistor body (7), a fixed sleeve (9) which is in sliding connection with the two sliding rods (10) is fixedly connected to the rear side wall of the equipment box (1), an electric push rod (11) is fixedly installed on the rear side wall of the equipment box (1), the movable end of the electric push rod (11) is fixedly connected with the middle part of the side wall of the resistor body (7), and the input end of the electric push rod (11) is electrically connected with the output end of the controller (3).
  10. 10. The novel direct current magnetic bias suppression device according to claim 1, wherein the heat dissipation structure (4) comprises two heat dissipation holes (401) formed in the front side wall of the equipment box (1), two heat dissipation fans (402) are fixedly installed in the two heat dissipation holes (401), ventilation grooves (403) are formed in the rear side wall of the equipment box (1), filter screens are arranged in the heat dissipation holes (401) and the ventilation grooves (403), and the input end of each heat dissipation fan (402) is electrically connected with the output end of the controller (3).

Description

Novel direct current magnetic bias suppression device Technical Field The utility model relates to the technical field of power transmission equipment, in particular to a novel direct-current magnetic bias suppression device. Background The DC magnetic bias phenomenon of the power transformer is more and more emphasized by a transformer substation, and the damage to the transformer is that the transformer is damaged by the vibration and the noise aggravation and the temperature rise increase, the transformer can be burnt down even the whole power grid is crashed, at present, the DC magnetic bias phenomenon is eliminated by adopting a reverse current injection method and a neutral point series capacitor method, but the cost is higher due to the complex design structure and more devices by adopting the method, and the DC magnetic bias phenomenon is eliminated by adopting a neutral point series resistance method. The existing transformer direct current magnetic bias suppression device adopts a suppression device for most neutral point series resistance methods, the series resistance is fixed, and the disassembly is very troublesome when the resistance needs to be adjusted, so that the direct current magnetic bias suppression device is difficult to adapt to the direct current magnetic bias suppression requirements for different resistance under different scenes, and in addition, when the device controller is overhauled and debugged, the device controller needs to enter a narrow container space, the process is inconvenient, and the practicability is poor. Disclosure of utility model The present utility model aims to solve the above problems and provide a novel dc bias suppression device, which is described in detail below. In order to achieve the above purpose, the present utility model provides the following technical solutions: The novel direct current magnetic bias suppression device comprises an equipment box, wherein an opening is formed in one side wall of the equipment box, a controller capable of transversely overturning is arranged in the opening, an electric connection base is fixedly arranged on the inner bottom of the equipment box, a plurality of resistors are arranged on the electric connection base, n-shaped conductors are fixedly connected to one sides of the resistors, translation conducting structures used for being connected with the electric connection base are arranged at the lower ends of the resistors and the n-shaped conductors, the translation conducting structures are configured to disconnect the n-shaped conductors from the electric connection base when the resistors are electrically connected with the electric connection base, when the n-shaped conductors are electrically connected with the electric connection base, the resistors are disconnected from the electric connection base, a plurality of driving structures used for driving the resistors to move along the wide side direction of the electric connection base are arranged on the rear side wall of the equipment box, and heat dissipation structures are arranged on the front side wall and the rear side wall of the equipment box. Preferably, the opening is provided with a mounting plate, the middle parts of the upper end and the lower end of the mounting plate are fixedly connected with a fixed shaft, shaft holes sleeved with the fixed shaft are formed in the upper end face and the lower end face of the opening, and the controller is fixedly mounted on the surface of the mounting plate. Preferably, a rubber pad is arranged on the inner wall of the opening, and the periphery of the mounting plate is abutted against the rubber pad. Preferably, the middle part of one side of the opening is fixedly connected with a limiting plate, and the limiting plate is abutted against the mounting plate after the mounting plate rotates 180 degrees, and a connecting wire of the controller is connected to the inside of the equipment box from the side wall of the connecting wire. Preferably, one end of the electric connection base is electrically connected with a neutral point joint line, and the other end of the electric connection base extends to the outer side of the equipment box through a connection wire. Preferably, an insulating housing is provided on the outside of the resistor body, which insulating housing is of plate-like design. Preferably, the translation conductive structure comprises two T-shaped conductive heads, the resistor body and the two T-shaped conductive heads at the lower end of the n-shaped conductive body are respectively positioned at the positive electrode and the negative electrode, a plurality of groups of T-shaped slots which are in plug-in fit with the T-shaped conductive heads are formed in the upper surface of the electric connection base, and an electric connection sheet which is electrically connected with the T-shaped conductive heads is arranged at the end part of each T-shaped slot. Preferably, the number of each g