A ruler for miswiring analysis

Abstract

A ruler for miswire analysis, comprising: a ruler disk, on which an angle scale circle of 0° to 360° is drawn with the center of the ruler disk as the center of the circle; the ruler disk is also provided with a plurality of first positioning grooves, a plurality of second positioning grooves and a plurality of positioning holes; one end of the first positioning groove takes the center of the ruler disk as the starting point, and the other end of the first positioning groove extends to the angle scale circle, and the interval between adjacent first positioning grooves is 60°; one end of the second positioning groove takes the center of the ruler disk as the starting point, and the other end of the second positioning groove extends to the angle scale circle, and the interval between adjacent second positioning grooves is 120°; at least one of the second positioning grooves is located on the angular bisector of two adjacent first positioning grooves; a plurality of the positioning holes are arranged in a circular array with the center of the ruler disk as the center of the circle, and the interval between adjacent positioning holes is 5 to 30°, and the interval between the positioning hole adjacent to the first positioning groove or the second positioning groove and the first positioning groove or the second positioning groove is 5 to 30°.

Description

Technical Field

[0001] The invention relates to the technical field of power systems, and in particular to a ruler for miswiring analysis. Background Art

[0002] When dealing with wiring faults in power metering devices, the power company's energy metering center often needs to perform miswiring analysis. When drawing phasor diagrams during miswiring analysis, it is necessary to locate the angles, such as Figure 1 , Figure 2 shown.

[0003] Currently, there is no special ruler for positioning in the market, so the staff can only draw the voltage and current phases manually, which results in low accuracy of the phase drawings and even makes it impossible to make accurate judgments. Summary of the invention

[0004] In order to effectively solve the above problems, the present invention provides a ruler for miswiring analysis, which can quickly and accurately draw a phasor diagram.

[0005] The technical solution of the present invention is as follows:

[0006] A ruler for miswiring analysis, comprising: a ruler plate, on which an angle scale circle of 0° to 360° is drawn with the center of the ruler plate as the center of the circle;

[0007] The ruler disc is also provided with a plurality of first positioning grooves, a plurality of second positioning grooves and a plurality of positioning holes;

[0008] One end of the first positioning groove takes the center of the ruler disk as a starting point, and the other end of the first positioning groove extends to the angle scale circle, and the interval between adjacent first positioning grooves is 60°;

[0009] One end of the second positioning groove takes the center of the ruler disk as a starting point, and the other end of the second positioning groove extends to the angle scale circle, and the interval between adjacent second positioning grooves is 120°;

[0010] At least one of the second positioning grooves is located on the angular bisector of two adjacent first positioning grooves;

[0011] The plurality of positioning holes are arranged in a circular array with the center of the ruler disk as the center, and the spacing between adjacent positioning holes is 5 to 30 degrees, and the spacing between the positioning holes adjacent to the first positioning groove or the second positioning groove and the first positioning groove or the second positioning groove is 5 to 30 degrees.

[0012] Furthermore, the interval between adjacent positioning holes is 10°, and the interval between the positioning hole adjacent to the first positioning groove or the second positioning groove and the first positioning groove or the second positioning groove is 10°.

[0013] Furthermore, the length of the first positioning groove is not equal to the length of the second positioning groove.

[0014] Furthermore, the shape of the ruler disk is any geometric shape.

[0015] Furthermore, the ruler disc is circular in shape.

[0016] Furthermore, the angle scale ring has an inner ring scale and an outer ring scale, wherein one of the first positioning grooves corresponds to the starting point of the outer ring scale, another clockwise adjacent first positioning groove corresponds to the starting point of the inner ring scale, and one of the second positioning grooves corresponds to the position of 30° of the outer ring scale or 330° of the inner ring scale.

[0017] Furthermore, a right-angled side is arranged on the outer circumference of the ruler plate, and length scale values ​​are engraved on the right-angled side.

[0018] The beneficial effect of the present invention is that the voltage and current phasors can be quickly drawn by using the ruler for miswiring analysis, and the phasor drawing has high precision, which is conducive to the staff to make accurate judgments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The phasor diagram of the three-phase four-wire energy meter during wrong wiring analysis;

[0020] Figure 2 The phasor diagram of the three-phase three-wire energy meter during wrong wiring analysis;

[0021] Figure 3 This is a structural diagram of Embodiment 1 of the present invention;

[0022] Figure 4 for Figure 3 Schematic diagram of the middle AA section;

[0023] Figure 5 This is a structural diagram of Embodiment 2 of the present invention;

[0024] Figure 6 This is a structural diagram of embodiment 3 of the present invention. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. The front and back described in the embodiments are subject to the accompanying drawings and are only used to clarify the positional relationship and are not used to limit the present invention.

[0026] On the contrary, the present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the following detailed description of the present invention.

[0027] Embodiment 1:

[0028] like Figure 3 , 4 As shown, it is a schematic diagram of the structure of an embodiment of the present invention, which provides a ruler for miswiring analysis, the ruler for miswiring analysis comprising: a ruler plate 1, on which an angle scale circle 2 of 0° to 360° is drawn with the center of the ruler plate 1 as the center of the circle;

[0029] The ruler plate 1 is also provided with a plurality of first positioning grooves 3, a plurality of second positioning grooves 4 and a plurality of positioning holes 5;

[0030] One end of the first positioning groove 3 takes the center of the ruler plate 1 as a starting point, and the other end of the first positioning groove 3 extends toward the angle scale circle 2, and the interval between adjacent first positioning grooves 3 is 60°;

[0031] One end of the second positioning groove 4 takes the center of the ruler plate 1 as a starting point, and the other end of the second positioning groove 4 extends toward the angle scale circle 2, and the interval between adjacent second positioning grooves 4 is 120°;

[0032] At least one of the second positioning grooves 4 is located on the angular bisector of two adjacent first positioning grooves 3;

[0033] The plurality of positioning holes 5 are arranged in a circular array with the center of the ruler plate 1 as the center, and the interval between adjacent positioning holes 5 is 5 to 30 degrees;

[0034] The positioning hole 5 adjacent to the first positioning groove 3 or the second positioning groove 4 has an angle of 5 to 30 degrees between the positioning hole 5 and the first positioning groove 3 or the second positioning groove 4 .

[0035] The length of the first positioning groove 3 and the length of the second positioning groove 4 may be equal or unequal. If they are unequal, it is convenient for the user to quickly distinguish them.

[0036] The first positioning groove 3 is used to locate the line voltage direction, the second positioning groove 4 is used to locate the phase voltage direction, and the positioning hole 5 is used to locate the phase current direction.

[0037] The shape of the ruler disk 1 can be any geometric shape. Preferably, the shape of the ruler disk 1 is circular.

[0038] The ruler plate 1 is made of transparent material, such as plastic.

[0039] By setting the phase voltage and line voltage as slot-shaped holes, the voltage phasor can be conveniently drawn. Since the phase current has many possible directions, multiple positioning holes 5 are set to fully meet the needs of the site.

[0040] Embodiment 2:

[0041] like Figure 5 As shown, this embodiment is basically the same as the above embodiments, except that the angle scale ring 2 has an inner ring scale 21 and an outer ring scale 22, one of the first positioning grooves 3 corresponds to the starting point of the outer ring scale 22, the other clockwise adjacent first positioning groove 3 corresponds to the starting point of the inner ring scale 21, and one of the second positioning grooves 4 corresponds to the position of 30° of the outer ring scale 22 or 330° of the inner ring scale 21.

[0042] When drawing the phasor diagram for wrong wiring analysis, if it is a three-phase three-wire positive phase sequence, then After the angle is determined, current 1 and current 2 are located through the 0° to 360° of the outer circle scale 22; if it is a reverse phase sequence, current 1 and current 2 are located through the 0° to 360° of the inner circle scale 21.

[0043] Embodiment three:

[0044] like Figure 6 As shown, this embodiment is basically the same as the above embodiments, except that a right-angled edge 6 is provided on the outer peripheral side of the ruler 1, and the right-angled edge 6 is engraved with a length scale value. After the current direction is positioned through the positioning hole 5, the right-angled edge 6 can be used for connecting lines.

[0045] The beneficial effect of the present invention is that the voltage and current phasors can be quickly drawn by using the ruler for miswiring analysis, and the phasor drawing has high precision, which is conducive to the staff to make accurate judgments.

Claims

1. A ruler for miswiring analysis, characterized in that: The miswire analysis ruler comprises: a ruler disk (1), on which an angle scale circle (2) ranging from 0° to 360° is drawn with the center of the ruler disk (1) as the center of the circle; The ruler disk (1) is also provided with a plurality of first positioning grooves (3), a plurality of second positioning grooves (4) and a plurality of positioning holes (5); One end of the first positioning groove (3) takes the center of the ruler disk (1) as a starting point, and the other end of the first positioning groove (3) extends toward the angle scale circle (2), and the interval between adjacent first positioning grooves (3) is 60°; One end of the second positioning groove (4) takes the center of the ruler disk (1) as a starting point, and the other end of the second positioning groove (4) extends toward the angle scale circle (2), and the interval between adjacent second positioning grooves (4) is 120°; At least one of the second positioning grooves (4) is located on the angular bisector of two adjacent first positioning grooves (3); The plurality of positioning holes (5) are arranged in a circular array with the center of the ruler disk (1) as the center of the circle, and the spacing between adjacent positioning holes (5) is 5 to 30 degrees, and the spacing between the positioning holes (5) adjacent to the first positioning groove (3) or the second positioning groove (4) and the first positioning groove (3) or the second positioning groove (4) is 5 to 30 degrees.

2. The misconnection analysis ruler according to claim 1, characterized in that: The spacing between adjacent positioning holes (5) is 10°, and the spacing between the positioning hole (5) adjacent to the first positioning groove (3) or the second positioning groove (4) and the first positioning groove (3) or the second positioning groove (4) is 10°.

3. The misconnection analysis ruler according to claim 1, characterized in that: The length of the first positioning groove (3) is not equal to the length of the second positioning groove (4).

4. The misconnection analysis ruler according to claim 1, characterized in that: The shape of the ruler disk (1) is any geometric shape.

5. The misconnection analysis ruler according to claim 1, characterized in that: The ruler plate (1) is circular in shape.

6. The misconnection analysis ruler according to claim 1, characterized in that: The angle scale ring (2) has an inner scale (21) and an outer scale (22), wherein one of the first positioning grooves (3) corresponds to the starting point of the outer scale (22), another first positioning groove (3) adjacent in a clockwise direction corresponds to the starting point of the inner scale (21), and one of the second positioning grooves (4) corresponds to the position of 30° of the outer scale (22) or 330° of the inner scale (21).

7. The misconnection analysis ruler according to claim 1, characterized in that: The outer circumference of the ruler plate (1) is provided with a right-angled side (6), and the right-angled side (6) is engraved with length scale values.

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