Alternating current acquisition device for new energy

Abstract

The utility model relates to an alternating current acquisition device for new energy, which comprises an outer shell and an iron core, the outer shell is a hollow quasi-circular shell with an opening in the front side surface, and a matched shell cover plate is arranged on the opening surface; a rectangular through hole is formed in the center of the outer shell and is of a multi-rectangle overlapped structure, and the upper end, the lower end, the left end and the right end of the outer shell are each provided with a support installation groove used for installing a support. A coil is arranged in the outer shell and is clamped in the outer shell around the rectangular through hole; a pouring filler is arranged in the outer shell, and the pouring filler is poured in the outer shell after the coil is arranged in the outer shell. According to the utility model, the measurement stability and anti-interference capability are improved, the coil heat dissipation capability is improved, the strength of the whole structure is improved, and the device is suitable for new energy construction places.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an alternating current acquisition device for new energy, which is applied to the acquisition of current signals in a primary low-voltage circuit. Background Technique

[0002] New energy power generation is an industry trend in energy supply in recent years. Among them, photovoltaic and wind energy, as common and sustainable new energies, have been widely used. As an indispensable part of the new energy power generation system, the current transformer can play the role of isolating high- and low-voltage electrical equipment and providing the acquisition amount of alternating current to the measuring device.

[0003] The existing alternating current acquisition module has the following defects:

[0004] (1) The primary alternating current in the new energy system is generally a large current signal, which causes the current acquisition module to generate high heat during use. Moreover, the environmental temperature in the new energy site is relatively high. The housing of the conventional current acquisition module is generally made of heat-intolerant materials. Being in a high-temperature environment for a long time will cause the housing to age and crack, and in severe cases, it will even cause system acquisition failures; wind farms are generally built in remote areas with high altitudes or in harsh environments such as the seaside. The conventional current acquisition module cannot meet the requirements of high temperature and humidity resistance, salt spray resistance, and voltage resistance in high-altitude areas.

[0005] (2) The rated voltage of the existing current acquisition module is generally 0.66 kV, which cannot meet the requirements of 1.2 kV in the wind power system;

[0006] (3) The conventional current acquisition module generally has a rectangular iron core, and the enameled wire on the coil is not easy to be evenly distributed, which easily causes uneven internal magnetic field distribution, affects the measurement accuracy and reduces the anti-interference ability;

[0007] (4) The conventional current acquisition module generally has a rectangular housing, and the direction of the output terminal is fixed, and it cannot meet the installation requirements of both horizontal and vertical rows at the same time. Summary of the Invention

[0008] The purpose of the utility model is to overcome the above deficiencies, provide an alternating current acquisition device for new energy, improve the measurement stability and anti-interference ability, improve the heat dissipation ability of the coil, improve the strength of the overall structure, and be suitable for new energy construction sites.

[0009] The purpose of the utility model is achieved as follows:

[0010] An alternating current acquisition device for new energy, which includes a housing and an iron core. The housing is a hollow circular-like housing with an opening on the front side, and a matching housing cover is provided on the opening surface;

[0011] A rectangular perforation is provided at the center of the outer housing. The rectangular perforation adopts a multi-rectangle overlapping structure to adapt to the installation of copper bars of different lengths. A bracket mounting groove is provided at each of the upper and lower ends and the left and right ends of the outer housing for mounting brackets.

[0012] A coil is provided inside the outer housing. The coil is clamped inside the outer housing around the rectangular perforation. The coil includes a circular iron core, and enameled wires are evenly wound around the outside of the iron core. The two lead wires of the enameled wires are respectively lead wire S1 and lead wire S2. Lead wire S1 and lead wire S2 are respectively connected to a first output terminal and a second output terminal. The first output terminal and the second output terminal are respectively arranged on the bracket. Pouring filler is provided inside the outer housing. After the coil is installed inside the outer housing, the pouring filler is poured inside the outer housing.

[0013] An alternating current acquisition device for new energy. A plurality of reinforcing ribs extend into the inner part of the outer housing on the inner side surface of the housing cover to enhance the overall firmness.

[0014] An alternating current acquisition device for new energy. A groove is provided at each end of the bracket. The first output terminal and the second output terminal are respectively press-fitted into the grooves of the bracket.

[0015] An alternating current acquisition device for new energy. A flip cover is installed on the surface of the bracket through screws and nuts. The nuts are fixed on the bracket by injection molding.

[0016] An alternating current acquisition device for new energy. The pouring filler adopts all-pouring glue. After the coil is installed inside the outer housing, the all-pouring glue is poured inside the outer housing. Before the glue solidifies, the housing cover is fixed through the buckle on the quasi-circular housing to form a complete whole.

[0017] An alternating current acquisition device for new energy. The outer housing is connected to the bracket through the buckle on the housing.

[0018] An alternating current acquisition device for new energy. The housing cover is fixed to the housing through the buckle on the outer housing to improve the strength of the overall structure.

[0019] An alternating current acquisition device for new energy. The outer housing adopts a high-temperature resistant housing.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] The utility model provides an alternating current acquisition device for new energy. The housing is designed in a quasi-circular shape. According to the direction of the copper bar, the position of the mounting bracket can be adjusted without changing the outer shape to meet the requirements of horizontal and vertical installations. The center perforation of the quasi-circular housing of the utility model is designed with multiple overlapping rectangles, which can be adapted to the installation of copper bars of different lengths. The coil of the utility model is fixed in the housing by full casting with glue, which can meet the use environment of high humidity and salt spray, and can improve the heat dissipation capacity of the coil. The iron core of the utility model is designed in a circular shape, and the enameled wire can be more easily wound evenly on the magnetic core, so that the magnetic field is evenly distributed, improving the measurement stability and anti-interference ability. The reinforcing ribs on the housing cover of the utility model extend into the quasi-circular housing and are fixed to the quasi-circular housing through the buckles on the quasi-circular housing, improving the strength of the overall structure. The quasi-circular housing of the utility model adopts a high-temperature resistant outer shell, which can meet the use environment of high temperature. Therefore, the utility model is applicable to new energy construction sites. Brief Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of the utility model.

[0023] Figure 2 It is an exploded schematic structural diagram of the utility model.

[0024] Figure 3 It is a front view of the utility model.

[0025] Figure 4 It is a side view of the utility model.

[0026] Figure 5 It is a schematic diagram of the coil of the utility model.

[0027] Figure 6 It is a schematic diagram of the functional principle of the utility model.

[0028] Wherein:

[0029] Outer housing 1, coil 2, iron core 3, enameled wire 4, first output terminal 51, second output terminal 52, bracket 6, casting filler 7, flip cover 8, screw 9, nut 10, housing cover 11. Detailed Description of the Embodiments

[0030] To better understand the technical solution of the utility model, the following will be described in detail with reference to the relevant drawings. It should be understood that the following specific embodiments are not intended to limit the specific implementation modes of the technical solution of the utility model, but are only the implementation modes that the technical solution of the utility model can adopt. It should be noted first that the description of the positional relationship of each component herein, such as component A is located above component B, is based on the relative positions of each component in the drawings and is not intended to limit the actual positional relationship of each component. Embodiment 1

[0031] See Figures 1-6 , Figure 1 a structural schematic diagram of the present utility model is drawn. As shown in the figure, an alternating current acquisition device for new energy of the present utility model includes a housing 1 and an iron core 3. The housing 1 is a hollow circular - like housing with an opening on the front side. A matching housing cover plate 11 is provided on the opening surface. A plurality of reinforcing ribs are provided on the inner side surface of the housing cover plate 11 and extend into the interior of the housing 1 to enhance the overall firmness.

[0032] A rectangular perforation is provided at the center of the housing 1. The rectangular perforation adopts a design of multiple rectangles overlapping to adapt to the installation of copper bars of different lengths. A bracket mounting groove is respectively provided at the upper and lower ends and the left and right ends of the housing 1 for mounting a bracket 6. Thus, two installation methods of horizontal installation or vertical installation can be realized. Without changing the overall shape, the position of the mounting bracket 6 can be selected according to the actual needs of customers.

[0033] A coil 2 is provided inside the housing 1. The coil 2 is clamped inside the housing 1 around the rectangular perforation. The coil 2 includes a circular iron core 3. Enameled wires 4 are uniformly wound around the outside of the iron core 3. The lead - out wires at both ends of the enameled wire 4 are respectively lead - out wire S1 and lead - out wire S2. The lead - out wire S1 and lead - out wire S2 are respectively connected to a first output terminal 51 and a second output terminal 52. Grooves are respectively provided at both ends of the bracket 6. The first output terminal 51 and the second output terminal 52 are respectively press - fitted into the grooves of the bracket 6.

[0034] A flip - cover 8 is installed on the surface of the bracket 6 through screws 9 and nuts 10. The flip - cover 8 can be made of a transparent material. The nut 10 is fixed on the bracket 6 by an injection - molding method.

[0035] Pouring filler 7 is provided inside the housing 1. The pouring filler 7 uses all - pouring glue. After the coil 2 is installed inside the housing 1, the all - pouring glue is poured into the housing 1. Before the glue solidifies, the housing cover plate 11 is fixed through the buckle on the circular - like housing 1 to form a complete whole. The all - pouring process improves the overall insulation, high - humidity and anti - salt - fog strength.

[0036] The housing 1 is connected to the bracket 6 through the buckle on the housing.

[0037] The housing cover plate 11 is fixed to the housing through the buckle on the housing 1 to improve the strength of the overall structure.

[0038] The housing 1 adopts a high - temperature - resistant housing, which can meet the use requirements in high - temperature environments.

[0039] Working principle:

[0040] An AC current acquisition device for new energy of the present utility model, wherein the bracket is fixed to the quasi-circular shell through a buckle; the coil lead-out wire is connected to the output terminal; the output terminal is press-fitted into the bracket; the flip cover is fixed to the nut on the bracket through a screw; the coil is installed in the shell, and the whole is poured with glue in the shell. Before the glue solidifies, the shell cover plate is fixed through the buckle on the quasi-circular shell to form a complete whole. The quasi-circular shell is connected to the bracket through the buckle on the shell;

[0041] The coil includes a circular magnetic core and an enameled wire, and the enameled wire is evenly wound around the circular iron core; the coil has two lead-out wires S1 and S2, and the two lead-out wires are connected to the output terminal; the output terminal is press-fitted into two corresponding grooves of the bracket; the nut is fixed to the bracket by injection molding; the transparent flip cover is fixed to the nut through a screw, so that the transparent flip cover is fixed to the bracket; the coil is fixed in the shell by the process of whole pouring with glue, improving the insulation, high humidity and salt spray resistance strength. The shell cover plate is fixed to the shell through the buckle on the shell, improving the strength of the overall structure.

[0042] Participate Figure 6 , Figure 6 The working principle schematic diagram of an AC current detection module for new energy is drawn. As shown in the figure, the primary winding of the current transformer is connected in series in the measured line. I1 is the line current, that is, the primary current of the current transformer, N1 is the primary turns of the current transformer, I2 is the secondary current of the current transformer (usually 5A, 1A), N2 is the secondary turns of the current transformer, and Z2e is the impedance of the secondary circuit equipment and connecting wires. When the primary current flows into the current transformer from the P1 end and out from the P2 end, and the secondary Z2e is connected, according to the electromagnetic induction principle, there is a current I2 in the secondary winding of the current transformer flowing from S1, passing through Z2e to S2, forming a closed loop. Thus, it can be obtained that in the ideal state, I1×N1 = I2×N2, so I1 / I2 = N1 / N2 = K, and K is the transformation ratio of the current transformer.

[0043] The above are only specific application examples of the present utility model, which do not constitute any limitation to the protection scope of the present utility model. Any technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of the rights protection of the present utility model.

Claims

1. An alternating current acquisition device for new energy, characterized in that: It includes a housing (1) and an iron core (3). The housing (1) is a hollow circular - shaped housing with an opening on the front side, and a matching housing cover plate (11) is provided on the opening surface; A rectangular perforation is provided at the center of the housing (1). The rectangular perforation adopts a multi - rectangular overlapping structure. A bracket mounting groove is provided at each of the upper and lower ends and the left and right ends of the housing (1) for mounting a bracket (6); A coil (2) is provided inside the housing (1). The coil (2) is engaged inside the housing (1) around the rectangular perforation. The coil (2) includes a circular iron core (3). Enameled wires (4) are evenly wound around the outside of the iron core (3). The lead - out wires at both ends of the enameled wire (4) are lead - out wire S1 and lead - out wire S2 respectively. Lead - out wire S1 and lead - out wire S2 are respectively connected to a first output terminal (51) and a second output terminal (52). The first output terminal (51) and the second output terminal (52) are respectively arranged on the bracket (6). Pouring filler (7) is arranged inside the housing (1). After the coil (2) is installed inside the housing (1), the pouring filler (7) is poured into the housing (1).

2. The alternating current acquisition device for new energy according to claim 1, wherein: On the inner side of the housing cover plate (11), multiple reinforcing ribs extend into the interior of the housing (1) to enhance the overall firmness.

3. The alternating current acquisition device for new energy according to claim 1, characterized in that: A groove is provided at each end of the bracket (6). The first output terminal (51) and the second output terminal (52) are respectively press - fitted into the grooves of the bracket (6).

4. The alternating current acquisition device for new energy according to claim 1, wherein: A flip - cover (8) is installed on the surface of the bracket (6) through screws (9) and nuts (10). The nut (10) is fixed on the bracket (6) by injection molding.

5. The alternating current acquisition device for new energy according to claim 1, characterized in that: The pouring filler (7) adopts a full - pouring glue. After the coil (2) is installed inside the housing (1), the full - pouring glue is poured into the housing (1). Before the glue solidifies, the housing cover plate (11) is fixed through the buckle on the housing (1) to form a complete whole.

6. The alternating current acquisition device for new energy according to claim 1, characterized in that: The housing (1) is connected to the bracket (6) through the buckle on the housing.

7. The alternating current acquisition device for new energy according to claim 1, wherein: The housing cover plate (11) is fixed to the housing through the buckle on the housing (1) to improve the strength of the overall structure.

8. The alternating current acquisition device for new energy according to claim 1, wherein: The housing (1) adopts a high - temperature - resistant housing.

Images