Line loss position detection device for electric power engineering

Abstract

The utility model provides a line loss position detection device for electric power engineering, and relates to the field of electric power engineering. The line loss position detection device for electric power engineering comprises a base, an outer shell and a multimeter, a plurality of detection contacts are installed in the outer shell, wires on the detection contacts are used for being connected with an electric power circuit, an inner shell used for rotating is installed in the outer shell, and two moving contacts are installed in the inner shell in a sliding mode. The two moving contacts are respectively contacted with two of the detection contacts, and the other detection contacts are respectively contacted with a conductor on the inner shell; according to the line loss position detection device for the electric power engineering, when the inner shell is driven by the driving shaft to rotate, the moving contact is in contact with different groups of detection contacts in sequence, automatic switching measurement of resistors of different line sections is realized, the measurement position does not need to be manually and frequently replaced, only the detection contacts and an electric power line need to be connected in advance, the detection time and manpower input are reduced, and the detection efficiency is improved. And the detection efficiency of the complex line network is improved.

Description

A line loss location detection device for power engineering Technical Field

[0001] This utility model relates to the field of power engineering, specifically a line loss location detection device for power engineering. Background Technology

[0002] Power engineering is a comprehensive engineering technology centered on electrical energy, encompassing power generation, transmission, distribution, and end-use applications. It also includes engineering projects that utilize electrical energy as a power source or energy source in multiple fields. Its core objective is to build a safe, efficient, and sustainable power system to support socio-economic development. Line loss refers to the energy loss caused by factors such as resistance and reactance during power transmission. By detecting the location of line loss, the specific location of energy loss can be accurately identified, allowing for targeted measures to reduce line loss, such as replacing high-loss transmission lines and optimizing line layout, thereby improving power transmission efficiency and reducing energy waste. Traditional line loss location detection devices are based on current and voltage measurements, using sensors installed on transmission lines to measure in real time... By measuring the current and voltage in the power line and applying Ohm's law and power calculation formulas, the power loss of the line can be calculated. Combined with line parameters and the location information of the measurement points, the approximate location of the line loss can be inferred. Some methods also rely on resistance measurement, using specialized resistance measuring instruments to periodically measure the resistance values ​​of different parts of the line. Since line resistance is closely related to line loss, increased resistance often indicates increased line loss, thus determining the possible location of line loss. When conducting routine inspections or preliminary assessments of line loss in power lines, resistance measurement can serve as a quick and effective method. By measuring the resistance values ​​of different parts of the line, it is possible to roughly determine whether there are obvious areas of abnormal resistance, providing clues for further in-depth testing.

[0003] Traditional resistance measurement methods are simple to operate, but when the circuit is complex and has many nodes, multiple measurements need to be taken at different locations to fully understand the resistance distribution of the circuit. Therefore, it takes a lot of time and manpower to complete the testing of the entire network, resulting in low work efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a line loss location detection device for power engineering, which solves the problem of low work efficiency and high time and manpower consumption when the line is complex and has many nodes.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a line loss location detection device for power engineering, comprising a base, a housing, and a multimeter. Several detection contacts are installed inside the housing, and the wires on the detection contacts are used to connect to the power line. An inner shell for rotation is installed inside the housing, and two moving contacts are slidably installed inside the inner shell. The two moving contacts respectively contact two of the detection contacts, and the remaining detection contacts are in contact with the conductors on the inner shell. When the inner shell rotates, multiple sets of detection contacts alternately contact the moving contacts.

[0006] The inner casing has two stationary contacts, both of which are connected to the multimeter via conductors. The multimeter can be powered on and run when any set of detection contacts is connected in series with the power line and the two moving contacts.

[0007] Preferably, the ends of the detection contact and the moving contact that are close to each other are both arc-shaped and are compatible with each other.

[0008] Preferably, an insulating plate is fixedly installed on the outer side of the moving contact, and an elastic sheet is fixedly installed between the insulating plate and the inner shell.

[0009] Preferably, a rubber pad is fixedly installed inside the inner shell, and both stationary contacts are fixed to the rubber pad.

[0010] Preferably, the conductor has a circular structure, and the portion near the moving contact is recessed.

[0011] Preferably, the conductor includes an inner conductor, an outer conductor, a bump, and two wires. The inner conductor and the outer conductor are in contact with two stationary contacts, respectively. The inner conductor is rotatably connected to the inner shell, and the outer conductor is fixed on the inner shell. The inner conductor is located inside the outer conductor, and the outer conductor is ring-shaped. The inner shell, the inner conductor, and the outer conductor are on the same axis. The bump is fixed to the outer shell and in contact with the outer conductor. One end of each of the two wires is connected to the inner conductor and the outer conductor, respectively, and the other end of each wire is connected to a multimeter.

[0012] Preferably, a main shaft for rotation is fixedly installed at the axial center of the inner shell.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This power engineering line loss location detection device, when the inner shell rotates under the drive of the drive shaft, the moving contact contacts different groups of detection contacts in sequence, switching the detection path of different lines. When the moving contact contacts a certain group of detection contacts, that group of detection contacts forms a complete series circuit with the conductor, stationary contact, conductor and multimeter, thereby enabling the sequential detection of multiple power lines and realizing automatic switching measurement of the resistance of different line segments. There is no need for frequent manual changes of measurement positions. Only the detection contacts and power lines need to be pre-connected. During the operation of the device, the resistance data of different line segments can be quickly and continuously obtained, reducing detection time and manpower input, and improving the detection efficiency of complex line networks.

[0015] 2. The power engineering line loss location detection device, when the two moving contacts are in contact with one of the sets of detection contacts, the other detection contacts are continuously energized. This allows the inner shell to rotate and switch the measurement line without waiting for the detection contacts to be re-energized and the circuit to stabilize. This enables rapid switching of measurements, shortens the overall detection time, and improves detection efficiency for complex power engineering with a large number of line nodes, enabling timely detection of line loss locations. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 is a sectional view of the top view of the outer shell of this utility model;

[0018] Figure 3 is a cross-sectional view of the inner shell side view of this utility model;

[0019] Figure 4 is a schematic diagram of the structure of the inner shell, inner conductor, outer conductor, and protrusion of this utility model;

[0020] Figure 5 is a bottom view of the inner shell of this utility model;

[0021] Figure 6 is a sectional view of the top view of the inner shell of this utility model;

[0022] Figure 7 is a schematic diagram of the structure of the conductor of this utility model.

[0023] The components are: 1. Base; 2. Outer shell; 3. Multimeter; 4. Detection contact; 5. Inner shell; 6. Moving contact; 601. Wire; 7. Conductor; 8. Stationary contact; 9. Insulating plate; 10. Elastic sheet; 11. Rubber pad; 12. Inner conductor; 13. Outer conductor; 14. Protrusion; 15. Wire; 16. Drive shaft. Detailed Implementation

[0024] As shown in Figures 1-7, a line loss location detection device for power engineering includes a base 1, a housing 2, and a multimeter 3. The housing 2 is fixed to the base 1. Several detection contacts 4 are installed inside the housing 2. Wires 601 on the detection contacts 4 are used to connect to power lines. An inner housing 5 for rotation is installed inside the housing 2. Two moving contacts 6 are slidably installed inside the inner housing 5. The ends of the detection contacts 4 and the moving contacts 6 that are close to each other are arc-shaped and compatible. When the detection contacts 4 rotate with the inner housing 5, they can sequentially contact several moving contacts 6. Two moving contacts 6 contact two of the detection contacts 4 respectively, and the remaining detection contacts 4 contact a conductor 7 on the inner housing 5. The conductor 7 is fixed to the inner housing 5. An insulating plate 9 is fixedly installed on the outside of each moving contact 6. An elastic sheet 10 is fixedly installed between the insulating plate 9 and the inner housing 5. When the moving contact 6 contacts the detection contact 4, the elastic sheet 10... In an elastic deformation state, the elastic sheet 10 provides a thrust to the insulating plate 9, causing the insulating plate 9 to drive the moving contact 6 to make tight contact with the detection contact 4, ensuring that the two can make tight contact and preventing poor contact. The inner shell 5 is fixedly installed with a rotating drive shaft 16 at its axis. The drive shaft 16 is rotatably connected to the outer shell 2. The drive shaft 16 can be driven to rotate by a motor, causing the drive shaft 16 to drive the inner shell 5 to rotate. When the inner shell 5 rotates, multiple sets of detection contacts 4 alternately contact the moving contact 6. That is, when the inner shell 5 rotates, different combinations of detection contacts 4 will establish contact with the moving contact 6 in different rotation positions. The conductor 7 has a through hole inside, and the moving contact 6 is located in the through hole, and the two do not contact each other. The conductor 7 has a circular structure, and the part near the moving contact 6 is concave. When the moving contact 6 contacts one of the sets of detection contacts 4, that set of detection contacts 4 disengages from the conductor 7.

[0025] The inner shell 5 has two stationary contacts 8 inside. A rubber pad 11 is fixedly installed inside the inner shell 5. The rubber pad 11 is elastic, and both stationary contacts 8 are fixed to the rubber pad 11. The rubber pad 11 can provide support for the stationary contacts 8, and the elasticity of the rubber pad 11 can also apply a pushing force to the stationary contacts 8, so that the stationary contacts 8 always maintain contact with the moving contacts 6. Both stationary contacts 8 are connected to the multimeter 3 through conductors. When any set of detection contacts 4 is in series with the power line and the two moving contacts 6, the multimeter can be powered on and run. The conductors include an inner conductor 12, an outer conductor 13, and a bump. 14 and two wires 15, inner conductor 12 and outer conductor 13 respectively contact two stationary contacts 8, inner conductor 12 is rotatably connected to inner shell 5, outer conductor 13 is fixed on inner shell 5, inner conductor 12 is located inside outer conductor 13, outer conductor 13 is ring-shaped, and inner shell 5, inner conductor 12 and outer conductor 13 are on the same axis, protrusion 14 is fixed to outer shell 2 and contacts outer conductor 13, one end of the two wires 15 is connected to inner conductor 12 and outer conductor 13 respectively, and the other end is connected to multimeter 3. During the rotation of inner shell 5, multimeter 3 can also be energized.

[0026] Working principle:

[0027] As shown in Figure 2, several detection contacts 4 are divided into multiple groups. Due to the large number of lines in the power engineering, the circuit needs to be de-energized first, and then each group of detection contacts 4 is connected to several power lines whose line loss needs to be tested, and then energized again. When it is necessary to test one of the line locations, the two moving contacts 6 are respectively in contact with the two detection contacts 4 corresponding to the line to be tested. This group of detection contacts 4, along with its wire 601, two stationary contacts 8, inner conductor 12, outer conductor 13, bump 14, two wires 15, and multimeter 3, form a series circuit. Based on Ohm's law, the multimeter calculates the resistance value of the corresponding line segment by measuring the loop current and voltage. Due to the characteristics of the series circuit, the change in line resistance will be directly reflected in the current and voltage values. Thus, the location of line loss can be determined by the change in the multimeter reading. For example, if the resistance of the line segment increases due to aging or poor contact, the loop current will decrease under the same supply voltage. The multimeter measurement value will deviate from the standard value, thus indicating that there is a line loss problem in the line segment.

[0028] Subsequently, as the inner shell 5 rotates under the drive of the drive shaft 16, the moving contact 6 contacts different groups of detection contacts 4 in sequence, switching the detection path of different lines. When the moving contact 6 contacts a certain group of detection contacts 4, that group of detection contacts 4 forms a complete series circuit with the conductor 7, the stationary contact 8, the conductor, and the multimeter, thereby enabling the sequential detection of multiple power lines. Traditional detection methods require manual measurement at each point multiple times, while this device uses the rotation of the inner shell 5 to drive the moving contact 6 to alternately contact multiple groups of detection contacts 4, realizing automatic switching measurement of the resistance of different line segments. There is no need for frequent manual changes of measurement positions. It is only necessary to pre-connect the detection contacts 4 to the power lines, and the device can quickly and continuously acquire the resistance data of different line segments during operation, reducing detection time and manpower input, and improving the detection efficiency of complex line networks.

[0029] Next, when the two moving contacts 6 come into contact with one of the sets of detection contacts 4, the remaining detection contacts 4 are also energized. This is because the remaining detection contacts 4 are all in contact with the conductors 7 on the inner shell 5. In the entire circuit structure, the conductors 7 serve as a common conductive channel. Even detection contacts 4 that are not directly connected to the moving contacts 6 are energized through the conductors 7. Taking the detection process at a certain moment as an example, when the moving contacts 6 and the detection contacts 4 corresponding to a specific line form a series measurement circuit, the current flows through this circuit and through the multimeter to complete the resistance measurement. At the same time, although the other detection contacts 4 do not participate in the current line measurement, they are always in an energized standby state because of the connection of the conductors 7. Once the inner shell 5 rotates, the moving contacts 6 switch to other detection contacts 4, and these originally standby detection contacts 4 can quickly form a new measurement circuit without having to re-establish the energized state, thus ensuring the continuity and rapid switching of the detection process.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A line loss location detection device for power engineering, characterized in that: The device includes a base (1), a housing (2), and a multimeter (3). The housing (2) is equipped with several detection contacts (4). The wires (601) on the detection contacts (4) are used to connect to the power line. The housing (2) is equipped with an inner shell (5) for rotation. Two moving contacts (6) are slidably installed in the inner shell (5). The two moving contacts (6) are in contact with two of the detection contacts (4) respectively. The remaining detection contacts (4) are in contact with the conductors (7) on the inner shell (5). When the inner shell (5) rotates, multiple sets of detection contacts (4) alternately contact the moving contacts (6). The inner shell (5) is equipped with two stationary contacts (8). The two stationary contacts (8) are connected to the multimeter (3) through conductors. When any set of detection contacts (4) is in series with the power line and the two moving contacts (6), the multimeter can be powered on and run.

2. The power engineering line loss location detection device according to claim 1, characterized in that: The detection contact (4) and the moving contact (6) are both arc-shaped at their closest points, and they are compatible with each other.

3. The power engineering line loss location detection device according to claim 1, characterized in that: An insulating plate (9) is fixedly installed on the outside of the moving contact (6), and an elastic sheet (10) is fixedly installed between the insulating plate (9) and the inner shell (5).

4. The power engineering line loss location detection device according to claim 1, characterized in that: A rubber pad (11) is fixedly installed inside the inner shell (5), and both stationary contacts (8) are fixed to the rubber pad (11).

5. The power engineering line loss location detection device according to claim 1, characterized in that: The conductor (7) has a circular structure, and the part near the moving contact (6) is concave.

6. The power engineering line loss location detection device according to claim 1, characterized in that: The conductor includes an inner conductor (12), an outer conductor (13), a bump (14), and two wires (15). The inner conductor (12) and the outer conductor (13) are in contact with two stationary contacts (8), respectively. The inner conductor (12) is rotatably connected to the inner shell (5). The outer conductor (13) is fixed on the inner shell (5). The inner conductor (12) is located inside the outer conductor (13). The outer conductor (13) is in the shape of a ring. The inner shell (5), the inner conductor (12), and the outer conductor (13) are on the same axis. The bump (14) is fixed to the outer shell (2) and is in contact with the outer conductor (13). One end of each of the two wires (15) is connected to the inner conductor (12) and the outer conductor (13), respectively. The other end of each wire is connected to the multimeter (3).

7. The power engineering line loss location detection device according to claim 1, characterized in that: A main shaft (16) for rotation is fixedly installed at the axis of the inner shell (5).

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