Portable voltage transformer for switch cabinet

Abstract

A portable voltage transformer for a switch cabinet comprises a base, a transformer body is arranged on the base, two primary connecting columns extend out of the transformer body and penetrate through the base, an output connecting seat is arranged on the transformer body, the base is used for being connected with a bus to be detected, and the two primary connecting columns make contact with the bus to be detected. The output connecting seat is used for outputting detection variables of the mutual inductor. The voltage transformer and the buses are designed to be in a contact form, and the grooves in the first bus and the second bus are aligned with the primary connecting column of the transformer through the through holes in the positioning connecting piece, so that convenient connection is realized, and the transformer can be conveniently disassembled and replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinet electrical appliances, in particular to a portable voltage transformer used in a switch cabinet. Background Art

[0002] In the current power system, voltage transformers, as one of the key devices, are widely used in various switchgears for voltage measurement, protection and synchronous control, etc. However, under the existing technical conditions, especially when used with advanced power equipment such as the integrated gas-insulated ring network switchgear with announcement number CN201247913Y, voltage transformers face a series of technical difficulties and defects in connection, installation and maintenance.

[0003] First, connection difficulties are a common problem with existing voltage transformers. In integrated gas-insulated ring network switchgear, due to the compact space layout and high insulation requirements, the installation and connection of voltage transformers require extremely high precision and reliability. Traditional voltage transformers are often large in size and have complex interfaces, which leads to great difficulties in the connection process, increasing the cost of installation and maintenance.

[0004] Secondly, the existing voltage transformers have deficiencies in insulation performance and withstand voltage. In high voltage and high current environments, voltage transformers need to have good insulation performance and withstand voltage to ensure the safe and stable operation of the power system. However, existing voltage transformers often have limitations in insulation materials and structural design, making it difficult to fully meet these requirements, especially in integrated gas-insulated ring network switchgear, where the requirements for insulation performance and withstand voltage are more stringent.

[0005] In addition, the development of existing voltage transformers in terms of intelligence and automation is relatively lagging behind. With the rapid development of smart grids and digital technologies, higher requirements are placed on the intelligence and automation levels of voltage transformers. However, existing voltage transformers often lack sufficient intelligent functions and cannot effectively exchange data and work in coordination with smart grid systems, limiting their application scope in modern power systems. Summary of the invention

[0006] The purpose of the utility model is to provide a portable voltage transformer for switch cabinet, aiming to achieve convenient connection and efficient operation of voltage transformer and switch cabinet by optimizing structure, improving insulation performance and withstand voltage capability, adding intelligent functions, etc., and solve the obvious technical difficulties and defects of existing voltage transformers in connection, insulation performance, withstand voltage capability and intelligence.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A portable voltage transformer for a switch cabinet comprises a base, a transformer body is arranged on the base, two primary connection posts extend from the transformer body and pass through the base, an output connection seat is arranged on the transformer body, the base is used to be connected to a busbar to be detected, the two primary connection posts are in contact with the busbar to be detected, and the output connection seat is used to output the detection variable of the transformer.

[0009] The busbars to be tested connected to the base include a first busbar and a second busbar, and the two primary connection posts are in contact with the first busbar and the second busbar respectively.

[0010] The first busbar and the second busbar are provided with grooves corresponding to the two primary connection columns, and the primary connection columns are in contact with the grooves.

[0011] The above-mentioned first busbar and second busbar are connected with the positioning connecting piece, which is a rectangular plate. One side of the upper and lower ends of the rectangular plate is provided with a clamping groove for clamping the first busbar and the second busbar. The rectangular plate is provided with through holes corresponding to the positions of the two primary connecting columns for them to pass through and contact the busbar.

[0012] The base is provided with a connecting hole, and the connecting hole is used to fix the base to the positioning connecting piece.

[0013] The positioning connector is made of insulating material.

[0014] The utility model provides a portable voltage transformer for a switch cabinet. The voltage transformer and the busbar are designed to be in contact with each other, and the grooves on the first busbar and the second busbar are aligned with the primary connection column of the transformer through the perforations on the positioning connector, so as to achieve convenient connection and facilitate disassembly and replacement of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the connection structure between the transformer and the busbar of the utility model;

[0017] Figure 2 for Figure 1 Left view of

[0018] Figure 3 The structure of the voltage transformer is shown in Figure 1. Figure 1 ;

[0019] Figure 4 The structure of the voltage transformer is shown in Figure 1. Figure 2 ;

[0020] Figure 5 The structure of the voltage transformer is shown in Figure 1. Figure 3 ;

[0021] Figure 6 This is the electrical schematic diagram of the voltage transformer.

[0022] In the figure: a first busbar 1, a second busbar 2, a voltage transformer 3, a base 31, a transformer body 32, a connecting hole 33, a primary connecting column 34, an output connecting socket 35, a positioning connector 4, a slot 41, a primary coil 5, and a secondary coil 6. DETAILED DESCRIPTION

[0023] like Figure 1-6 As shown in the figure, a portable voltage transformer for a switch cabinet, the voltage transformer 3 includes a base 31, a transformer body 32 is provided on the base 31, two primary connecting columns 34 extend from the transformer body 32 and pass through the base 31, an output connecting seat 35 is provided on the transformer body 32, the base 31 is used to connect to the bus to be detected, the two primary connecting columns 34 are in contact with the bus to be detected, and the output connecting seat 35 is used to output the detection variable of the transformer.

[0024] The busbars to be tested connected to the base 31 include a first busbar 1 and a second busbar 2 , and two primary connection posts 34 are in contact with the first busbar 1 and the second busbar 2 , respectively.

[0025] The first busbar 1 and the second busbar 2 are provided with grooves corresponding to the two primary connection columns 34 , and the primary connection columns 34 are in contact with the grooves.

[0026] The above-mentioned first busbar 1 and second busbar 2 are connected to the positioning connector 4, which is a rectangular plate. A clamping groove 41 for clamping the first busbar 1 and the second busbar 2 is provided on one side of the upper and lower ends of the rectangular plate. The rectangular plate is provided with through holes corresponding to the positions of the two primary connecting columns 34 for them to pass through and contact the busbars.

[0027] The base 31 is provided with a connection hole 33 , and the connection hole 33 is used to fix the base 31 to the positioning connector 4 .

[0028] The positioning connector 4 is made of insulating material.

[0029] By using the positioning connector 4, the first busbar 1 and the second busbar 2 are passed through the slot 41, and the grooves of the first busbar 1 and the second busbar 2 are aligned with the perforation positions on the positioning connector 4, so that the primary connecting column 34 of the voltage transformer 3 can be easily inserted into the groove, and the contact is sufficient through the connection and tightening of the voltage transformer 3 and the squeezing of the groove. The primary connecting column 34 has slopes on all four sides, so that the tighter the squeezing, the more sufficient the contact.

[0030] The output from the output connector 35 may be a processed analog signal, which is directly transmitted to the detection device, or may be the induction signal of the secondary coil 6, which is output to the processing device for analog or digital conversion.

Claims

1. A portable voltage transformer for a switch cabinet, characterized in that: The voltage transformer (3) comprises a base (31), a transformer body (32) is provided on the base (31), two primary connection columns (34) extend from the transformer body (32) and penetrate the base (31), an output connection seat (35) is provided on the transformer body (32), the base (31) is used to connect to a busbar to be detected, the two primary connection columns (34) are in contact with the busbar to be detected, and the output connection seat (35) is used to output a detection variable of the transformer; The busbars to be tested connected to the base (31) include a first busbar (1) and a second busbar (2), and the two primary connection columns (34) are in contact with the first busbar (1) and the second busbar (2) respectively; The first busbar (1) and the second busbar (2) are provided with grooves corresponding to the two primary connection columns (34), and the primary connection columns (34) are in contact with the grooves; The first busbar (1) and the second busbar (2) are connected to a positioning connector (4), the positioning connector (4) being a rectangular plate, with a clamping groove (41) for clamping the first busbar (1) and the second busbar (2) provided on one side of the upper and lower ends of the rectangular plate, and a through hole corresponding to the position of the two primary connection columns (34) for them to penetrate and contact the busbars; The base (31) is provided with a connection hole (33), and the connection hole (33) is used to fix the base (31) and the positioning connection member (4); The positioning connector (4) is made of insulating material.

Images