Series-parallel connection conversion mechanism of adjustable reactor

Abstract

The utility model relates to a series-parallel conversion mechanism of an adjustable reactor, which is characterized in that an upper tap contact on an upper linear tap switch is connected with a corresponding upper tap line on an upper adjusting winding, and a lower tap contact on a lower linear tap switch is connected with a corresponding lower tap line on a lower adjusting winding; the upper series-parallel tapping switch is provided with a first upper contact, a second upper contact and a third upper contact, the lower series-parallel tapping switch is provided with a first lower contact, a second lower contact and a third lower contact, the first upper contact is connected with the upper main winding, the second upper contact is connected with the second lower contact through a first connecting line, and the third upper contact is connected with the lower main winding through a second connecting line. The first connecting line is connected with an upper connecting contact on the upper linear tap switch, the third upper contact is connected with the third lower contact through a second connecting line, the second connecting line is connected with the lower main winding, a lower connecting contact on the lower linear tap switch is connected with the first lower contact through a lower switch connecting line, and the lower switch connecting line is grounded. According to the utility model, the reactance value adjusting range of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reactors, in particular to a series-parallel conversion mechanism of an adjustable reactor. Background Art

[0002] Adjustable reactors are mostly used in reactive power compensation systems. Compared with reactors that provide fixed reactance values, adjustable reactors can provide multiple impedance values, which can provide users with more impedance options, thereby improving the diversity and flexibility of product use. From an application perspective, adjustable reactors are an economical and efficient solution for compensating reactive power. However, the adjustable reactor in the prior art realizes the change of the product reactance value by changing the number of turns of the coil, and usually adopts a linear adjustment method. Its characteristics are that it can provide the same number of reactance values ​​as the number of taps of the adjustment coil, but the adjustment range cannot be further improved. For example, the Chinese utility model patent with authorization announcement number CN201489978U discloses a variable parallel reactor, whose tap converter can change the connection point to any control winding position, that is, change the number of turns of the adjustment coil. For example, the Chinese utility model patent with authorization announcement number CN212570668U discloses a special capacity-adjusting reactor for railway line compensation, which adjusts the number of turns of the coil by switching the middle voltage regulating switch and then adjusts the reactor capacity. The above devices are all linearly adjusted. Utility Model Content

[0003] The purpose of the utility model is to provide a series-parallel conversion mechanism for an adjustable reactor, which adds a winding series-parallel adjustment method based on the linear adjustment method, can provide double the impedance quantity under limited winding connection, and greatly improves the adjustment range of the product reactance value.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A series-parallel conversion mechanism for an adjustable reactor, wherein an upper main winding and a lower main winding are sequentially arranged on the outer side of a core column of a reactor body from top to bottom, and an upper regulating winding is arranged on the outer side of the upper main winding, and a lower regulating winding is arranged on the outer side of the lower main winding, comprising an upper series-parallel tap switch and a lower series-parallel tap switch, wherein the upper series-parallel tap switch is provided with a first upper contact, a second upper contact and a third upper contact, and the lower series-parallel tap switch is provided with a first lower contact, a second lower contact and a third lower contact, and the first upper The contact is connected to the upper main winding through the upper main winding line, the second upper contact is connected to the second lower contact through the first line, and the switch of the upper regulating winding is connected to the first line through the upper switch line, the third upper contact is connected to the third lower contact through the second line, and the second line is connected to the lower main winding through the lower main winding line, the switch of the lower regulating winding is connected to the first lower contact through the lower switch line, and the lower switch line is grounded.

[0006] The switch on one side of the upper regulating winding is an upper linear regulating tap switch, and the upper linear regulating tap switch is provided with an upper connecting contact and a plurality of upper tap contacts, wherein the upper tap lines corresponding to different numbers of winding turns on the upper regulating winding are respectively connected to the corresponding upper tap contacts on the upper linear regulating tap switch, and the upper connecting contacts are connected to the upper switch connecting lines.

[0007] The switch on one side of the lower regulating winding is a lower linear regulating tap switch, and the lower linear regulating tap switch is provided with a lower connecting contact and a plurality of lower tap contacts, wherein the lower tap lines corresponding to different numbers of winding turns on the lower regulating winding are respectively connected to the corresponding lower tap contacts on the lower linear regulating tap switch, and the lower connecting contacts are connected to the lower switch connecting line.

[0008] The upper end of the upper main winding is connected to the upper main winding, and the lower end of the upper main winding is connected to the upper regulating winding.

[0009] The upper end of the lower main winding is connected to the lower regulating winding, and the lower end of the lower main winding is connected to the lower main winding.

[0010] The switch on one side of the upper regulating winding is an upper linear regulating tap switch, the switch on one side of the lower regulating winding is a lower linear regulating tap switch, and the upper linear regulating tap switch and the lower linear regulating tap switch form a linear regulating tap switch group, the upper series-parallel tap switch and the lower series-parallel tap switch form a series-parallel tap switch group, and the linear regulating tap switch group and the series-parallel tap switch group are arranged in a line on one side of the reactor body.

[0011] When the windings are operated in parallel, the first upper contact and the third upper contact on the upper series-parallel tap switch are connected, and the first lower contact and the second lower contact on the lower series-parallel tap switch are connected.

[0012] When the windings are connected in series, the second upper contact on the upper series-parallel tap switch is connected to the third upper contact, and the second lower contact on the lower series-parallel tap switch is connected to the third lower contact.

[0013] The advantages and positive effects of the utility model are:

[0014] 1. The utility model adds a winding series-parallel adjustment method based on the linear adjustment method, which can provide double the impedance quantity under limited winding connection, greatly improving the adjustment range of the product reactance value.

[0015] 2. The linear adjustment tap changer group and the series-parallel tap changer group of the utility model can be arranged in a line on one side of the reactor body, which is convenient for internal wiring of the reactor body and does not increase the product volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a wiring diagram of the utility model when the windings are connected in parallel.

[0017] Figure 2 for Figure 1 The enlarged schematic diagram of the upper and lower linear modulation tap changers and the upper and lower series-parallel tap changers,

[0018] Figure 3 This is a wiring diagram of the utility model when the windings are in series operation.

[0019] Figure 4 for Figure 3 The enlarged schematic diagram of the upper and lower linear modulation tap changers and the upper and lower series-parallel tap changers,

[0020] Figure 5 This is a schematic diagram of the arrangement of each winding of the utility model.

[0021] Figure 6 It is a schematic diagram of the arrangement of each switch group of the utility model.

[0022] Among them, 1 is the upper main winding, 2 is the lower main winding, 3 is the upper regulating winding, 301 is the upper tap line, 4 is the lower regulating winding, 401 is the lower tap line, 5 is the upper linear regulating tap changer, 501 is the upper connecting contact, 502 is the upper tap contact, 503 is the upper switch connection, 6 is the lower linear regulating tap changer, 601 is the lower connecting contact, 602 is the lower tap contact, 603 is the lower switch connection, 7 is the upper series-parallel tap changer, 701 is the first upper contact , 702 is the second upper contact, 703 is the third upper contact, 8 is the lower series-parallel tap changer, 801 is the first lower contact, 802 is the second lower contact, 803 is the third lower contact, 9 is the upper main winding connection, 10 is the lower main winding connection, 11 is the second connection, 12 is the first connection, 13 is the reactor body, 1301 is the core column, 1302 is the upper iron yoke, 1303 is the lower iron yoke, 14 is the linear adjustment tap changer group, and 15 is the series-parallel tap changer group. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] like Figure 5 As shown, the utility model includes a reactor body 13, and the reactor body 13 includes a core column 1301, an upper iron yoke 1302, and a lower iron yoke 1303. The upper outer side of the core column 1301 is provided with an upper main winding 1, and the lower outer side of the lower part is provided with a lower main winding 2. The upper main winding 1 is provided with an upper regulating winding 3, and the lower main winding 2 is provided with a lower regulating winding 4. The above structure is a well-known technology in the art.

[0025] like Figures 1 to 4 As shown, the utility model also includes an upper series-parallel tap changer 7 and a lower series-parallel tap changer 8, wherein Figure 2 As shown, the upper series-parallel tap changer 7 is provided with a first upper contact 701, a second upper contact 702 and a third upper contact 703, and the lower series-parallel tap changer 8 is provided with a first lower contact 801, a second lower contact 802 and a third lower contact 803, wherein the first upper contact 701 is connected to the upper main winding 1 through an upper main winding connection line 9, the second upper contact 702 is connected to the second lower contact 802 through a first connection line 12, and the upper The switch of the regulating winding 3 is connected to the first connection line 12 through the upper switch connection line 503, the third upper contact 703 is connected to the third lower contact 803 through the second connection line 11, and the second connection line 11 is connected to the lower main winding 2 through the lower main winding connection line 10, and the switch of the lower regulating winding 4 is connected to the first lower contact 801 on the lower series-parallel tap switch 8 through the lower switch connection line 603, and the lower switch connection line 603 is grounded.

[0026] like Figures 1 to 4As shown, the switch on one side of the upper regulating winding 3 is an upper linear regulating tap switch 5, and the upper linear regulating tap switch 5 is provided with an upper connecting contact 501 and a plurality of upper tap contacts 502, wherein the upper tap lines 301 corresponding to different winding turns on the upper regulating winding 3 are respectively connected to the corresponding upper tap contacts 502 on the upper linear regulating tap switch 5, and the upper connecting contact 501 on the upper linear regulating tap switch 5 is connected to the upper switch connection line 503.

[0027] like Figures 1 to 4 As shown, the switch on one side of the lower regulating winding 4 is a lower linear regulating tap switch 6, and the lower linear regulating tap switch 6 is provided with a lower connecting contact 601 and a plurality of lower tap contacts 602, wherein the lower tap lines 401 corresponding to different winding turns on the lower regulating winding 4 are respectively connected to the corresponding lower tap contacts 602 on the lower linear regulating tap switch 6, and the lower connecting contact 601 on the lower linear regulating tap switch 6 is connected to the lower switch connection line 603.

[0028] like Figure 1 As shown, the upper end of the upper main winding 1 is connected to the upper main winding connection line 9 , and the lower end of the upper main winding 1 is connected to the upper regulating winding 3 .

[0029] like Figure 1 As shown, the upper end of the lower main winding 2 is connected to the lower regulating winding 4 , and the lower end of the lower main winding 2 is connected to the lower main winding connection line 10 .

[0030] like Figure 1 As shown, the upper linear regulating tap switch 5 and the lower linear regulating tap switch 6 form a linear regulating tap switch group 14, the upper series-parallel tap switch 7 and the lower series-parallel tap switch 8 form a series-parallel tap switch group 15, and as shown in FIG. Figure 6 As shown, the linear adjustment tap switch group 14 and the series-parallel tap switch group 15 are arranged in a line on one side of the reactor body 13, so as to facilitate the internal wiring of the reactor body.

[0031] The working principle of the utility model is:

[0032] like Figures 1-2 As shown, when the windings of the utility model are in parallel operation, the first upper contact 701 and the third upper contact 703 on the upper series-parallel tap changer 7 are connected, and the first lower contact 801 and the second lower contact 802 on the lower series-parallel tap changer 8 are connected, as shown in FIG. Figures 3-4 As shown, when the windings of the utility model are operated in series, the second upper contact 702 on the upper series-parallel tap switch 7 is connected to the third upper contact 703 , and the second lower contact 802 on the lower series-parallel tap switch 8 is connected to the third lower contact 803 .

[0033] In an application example of the present utility model, when Figures 1-2 In the parallel operation state shown, the following impedance can be obtained by adjusting the linear tap changer group 14:

[0034]

[0035] When in Figures 3-4 In the parallel operation state shown, the following impedance can be obtained by adjusting the linear tap changer group 14:

[0036]

[0037] It can be seen from the above application examples that the utility model can provide a double impedance range under a limited number of linear adjustment taps by changing the series-parallel state of the windings, greatly improving the adjustment range of the product reactance value and producing unexpected technical effects.

Claims

1. A series-parallel conversion mechanism of an adjustable reactor, wherein an upper main winding and a lower main winding are sequentially arranged on the outer side of the core column of the reactor body from top to bottom, and an upper regulating winding is arranged on the outer side of the upper main winding, and a lower regulating winding is arranged on the outer side of the lower main winding, characterized in that: The invention comprises an upper series-parallel tap changer (7) and a lower series-parallel tap changer (8), wherein the upper series-parallel tap changer (7) is provided with a first upper contact (701), a second upper contact (702) and a third upper contact (703), and the lower series-parallel tap changer (8) is provided with a first lower contact (801), a second lower contact (802) and a third lower contact (803), the first upper contact (701) is connected to the upper main winding (1) via an upper main winding connection line (9), and the second upper contact (702) is connected to the first upper contact (701) via a first connection line (12). The first and second lower contacts (802) are connected, and the switch of the upper regulating winding (3) is connected to the first connection line (12) through the upper switch connection line (503), the third upper contact (703) is connected to the third lower contact (803) through the second connection line (11), and the second connection line (11) is connected to the lower main winding (2) through the lower main winding connection line (10), the switch of the lower regulating winding (4) is connected to the first lower contact (801) through the lower switch connection line (603), and the lower switch connection line (603) is grounded.

2. The series-parallel conversion mechanism of the adjustable reactor according to claim 1, characterized in that: The switch on one side of the upper regulating winding (3) is an upper linear regulating tap switch (5), and the upper linear regulating tap switch (5) is provided with an upper connecting contact (501) and a plurality of upper tap contacts (502), wherein upper tap lines (301) corresponding to different numbers of winding turns on the upper regulating winding (3) are respectively connected to corresponding upper tap contacts (502) on the upper linear regulating tap switch (5), and the upper connecting contact (501) is connected to the upper switch connection line (503).

3. The series-parallel conversion mechanism of the adjustable reactor according to claim 1, characterized in that: The switch on one side of the lower regulating winding (4) is a lower linear regulating tap switch (6), and the lower linear regulating tap switch (6) is provided with a lower connecting contact (601) and a plurality of lower tap contacts (602), wherein lower tap lines (401) corresponding to different numbers of winding turns on the lower regulating winding (4) are respectively connected to corresponding lower tap contacts (602) on the lower linear regulating tap switch (6), and the lower connecting contact (601) is connected to the lower switch connecting line (603).

4. The series-parallel conversion mechanism of the adjustable reactor according to claim 1, characterized in that: The upper end of the upper main winding (1) is connected to the upper main winding connection line (9), and the lower end of the upper main winding (1) is connected to the upper regulating winding (3).

5. The series-parallel conversion mechanism of the adjustable reactor according to claim 1, characterized in that: The upper end of the lower main winding (2) is connected to the lower regulating winding (4), and the lower end of the lower main winding (2) is connected to the lower main winding connecting line (10).

6. The series-parallel conversion mechanism of the adjustable reactor according to claim 1, characterized in that: The switch on one side of the upper regulating winding (3) is an upper linear regulating tap switch (5), the switch on one side of the lower regulating winding (4) is a lower linear regulating tap switch (6), the upper linear regulating tap switch (5) and the lower linear regulating tap switch (6) form a linear regulating tap switch group (14), the upper series-parallel tap switch (7) and the lower series-parallel tap switch (8) form a series-parallel tap switch group (15), and the linear regulating tap switch group (14) and the series-parallel tap switch group (15) are arranged in a line on one side of the reactor body (13).

7. The series-parallel conversion mechanism of the adjustable reactor according to claim 1, characterized in that: When the windings are operated in parallel, the first upper contact (701) and the third upper contact (703) on the upper series-parallel tap switch (7) are connected, and the first lower contact (801) and the second lower contact (802) on the lower series-parallel tap switch (8) are connected.

8. The series-parallel conversion mechanism of the adjustable reactor according to claim 1, characterized in that: When the windings are operated in series, the second upper contact (702) on the upper series-parallel tap switch (7) is connected to the third upper contact (703), and the second lower contact (802) on the lower series-parallel tap switch (8) is connected to the third lower contact (803).

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