Improved device for electric energy quality evaluation and control method thereof

Abstract

The invention discloses an improved device for electric energy quality assessment and a control method thereof.The improved device comprises a base and a machine case, the machine case is fixedly installed on the upper surface of the machine case, and a groove is formed in the upper end of the rear side surface of the machine case. When the connector needs to be detached, a wire at the rear end of the connector lug is clamped on the inner side of the limiting ring, and the limiting ring is extruded towards the middle through the elastic force of a fourth spring structure, so that the wire at the rear end of the connector lug is fixed and clamped through the limiting ring, and the problem that the connector lug falls off from a wiring port due to the fact that the wire is touched by mistake is prevented; the pressing rod is manually pressed, the pressing rod drives the ejector rod to extrude towards the lower end, the ejector rod downwards extrudes the stop block, and the stop block drives the limiting ring at the lower end to slide downwards, so that the distance between the upper limiting ring and the lower limiting ring is enlarged, and the connector lug is conveniently taken out from the interior of the limiting ring.

Description

Technical Field

[0001] The present application belongs to the technical field of power quality assessment, and specifically relates to an improved device for power quality assessment and a control method thereof. Background Art

[0002] The statements in this section merely provide background technical information related to the present application and do not necessarily constitute prior art.

[0003] Power quality assessment refers to the process of monitoring, analyzing and evaluating the power quality indicators in the power system. These indicators include voltage, current, frequency, waveform distortion, voltage fluctuation, flicker, harmonic content, three-phase imbalance, etc., which reflect the quality and stability of power supply. The quality of power is directly related to the normal operation of power equipment and user equipment, and will also affect the safety and economic operation of the power system.

[0004] In the current power quality assessment and improvement devices, the traditional use method usually involves connecting to other devices through wiring ports and wiring heads. The structural design of these traditional connection components is relatively basic, lacking sufficient stability and anti-mistouch characteristics. In actual operation, since the wiring head is easily detached from the wiring port due to mistouch, this situation may cause unstable connection, thereby affecting the detection accuracy and reliability of the power quality assessment and improvement device. In addition, the existing power quality assessment and improvement device is insufficient in portability, and is not convenient for field engineers to carry and hand-operate, which to a certain extent limits its efficiency and flexibility. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide an improved device for power quality assessment and a control method thereof, so as to solve the problem that the traditional connection component structure design proposed in the above background technology is relatively basic, lacks sufficient stability and anti-mistouch characteristics. In actual operation, the connection head is easily detached from the connection port due to accidental touch, which may cause unstable connection, thereby affecting the detection accuracy and reliability of the power quality assessment improvement device; in addition, the existing power quality assessment improvement device has shortcomings in portability and is not convenient for on-site engineers to carry and hand-operate, which to a certain extent limits its use efficiency and flexibility.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an improved device for power quality assessment, comprising a base and a chassis, wherein the chassis is fixedly mounted on the upper surface of the chassis, a groove is provided at the upper end of the rear side surface of the chassis, a wiring groove is provided at the lower end of the rear side surface of the chassis, a plurality of wiring ports are installed on the inner wall of the wiring groove, telescopic rods are installed on the upper and lower surfaces of the interior of the wiring groove, the output end of the telescopic rod is transmission-connected to a limiting ring, the limiting ring is a semi-annular structure, a fourth spring structure is provided between the outer side of the limiting ring and the inner wall of the wiring groove, both side surfaces of the limiting ring at the lower end are fixedly connected to blocks, the groove and the interior of the wiring groove are both penetrated and slidably connected with a push rod, the upper end of the push rod is fixedly connected to a pressure rod, and a third spring structure is provided between the pressure rod and the lower end of the inner part of the groove;

[0007] A handle groove is provided in the middle part of the upper surface of the chassis, a handle is slidably connected inside the handle groove, a second spring structure is provided between the lower surface of the handle and the inner bottom end of the handle groove, and a plurality of second spring structures are provided.

[0008] Preferably, heat dissipation holes are provided on both side surfaces of the chassis, and a plurality of heat dissipation holes are provided.

[0009] Preferably, a display panel and a control switch are respectively installed on the front surface of the chassis, and a plurality of control switches are provided.

[0010] Preferably, sliding grooves are provided on both side surfaces of the chassis, and sliding blocks are slidably connected inside the sliding grooves.

[0011] Preferably, the outer surface of the sliding block is rotatably connected to a protective cover via a rotating shaft, and the protective cover is slidably connected to the side surface of the chassis via a protective groove.

[0012] Preferably, a fixing rod is fixedly connected to the upper end of the side surface of the protective cover.

[0013] Preferably, four corners of the lower surface of the base are fixedly connected with rubber blocks, and a plurality of rubber blocks are provided.

[0014] Preferably, card slots are provided through the upper ends of both sides of the handle slot.

[0015] Preferably, spring grooves are provided at the lower ends of both side surfaces of the handle, a clamping block is slidably connected inside the spring groove, a first spring structure is provided between the clamping block and the inner wall of the spring groove, and the clamping block is clamped and connected inside the clamping groove.

[0016] A control method for an improved device for power quality assessment comprises the following steps:

[0017] Step 1: Preparation and inspection: Before using the power quality assessment and improvement device, please ensure that the device has been correctly installed on the base, and check whether there is a groove at the upper end of the rear surface of the chassis, whether there is a wiring slot at the lower end, and whether there are several wiring ports installed on the inner wall of the wiring slot; at the same time, check whether the top rod, pressure rod, handle, protective cover and other parts are intact, and ensure that the heat dissipation holes are unobstructed;

[0018] Step 2: Wiring and fixing: Insert the wiring head into the wiring port, and make sure that the wire at the rear end of the wiring head is fixed and engaged by the limiting ring to prevent the wire from falling off; press the pressure rod to make the top rod press the block downward, so that the limiting ring slides downward, and the distance between the upper and lower limiting rings is expanded, so that the wiring head can be easily removed from the inside of the limiting ring;

[0019] Step 3: Startup and debugging: Turn on the control switch to start the power quality assessment and improvement device; observe the data on the display board and debug the device as needed to ensure its normal operation;

[0020] Step 4: Move and carry: Press the handle to make it enter the handle slot; pull the handle upward until the card block is inserted into the card slot to fix the handle; lift the device to move; after reaching the destination, release the handle to retract it into the handle slot by the restoring elastic force of the second spring structure;

[0021] Step 5: Protection and storage: After use, slide the protective cover to the bottom of the sliding slot to protect the display panel and the control switches on both sides of the display panel. Place the device on the base. The rubber block on the lower surface of the base increases the friction with the ground or desktop to prevent the device from sliding. Turn off the control switch and cut off the power supply. When storing, keep the heat dissipation holes of the chassis unobstructed to ensure that the heat generated by the internal electrical components can be effectively dissipated.

[0022] Compared with the prior art, the present invention provides an improved device for power quality assessment and a control method thereof, which has the following beneficial effects:

[0023] 1. The present invention provides a limiting ring and a fourth spring structure. When the terminal is connected to the wiring port, the wire at the rear end of the terminal will be clamped on its inner side by the limiting ring. The limiting ring is squeezed toward the middle by the elastic force of the fourth spring structure, so that the limiting ring plays a role of fixing and engaging the wire at the rear end of the terminal, preventing the wire from being accidentally touched and causing the terminal to fall off from the wiring port. When the terminal needs to be removed, the pressure rod is manually pressed, and the pressure rod drives the push rod to be squeezed toward the lower end, and the stopper is squeezed downward by the push rod, and the stopper drives the limiting ring at the lower end to slide downward, thereby expanding the distance between the upper and lower limiting rings, making it convenient to take the terminal out of the limiting ring, effectively avoiding the problem that the traditional connection component structure design is relatively basic and lacks sufficient stability and anti-mistouch characteristics. In actual operation, since the terminal is easily separated from the wiring port due to accidental touch, this situation may cause unstable connection, thereby affecting the detection accuracy and reliability of the power quality assessment and improvement device.

[0024] 2. The present invention provides structures such as a handle and a card block. When the power quality assessment and improvement device is used to assess the power quality, the handle is pulled downward by the elastic force of the second spring structure, so that the handle enters the handle groove. When the device is moved, the handle is pulled upward. At this time, the second spring structure is in a stretched state. When the handle is pulled to the limit, the card block reaches the position of the card groove. The card block is ejected out of the spring groove by the first spring structure and is stuck in the card groove to fix the handle. At this time, the device can be lifted by the handle to move. When the handle is released, the handle is retracted into the handle groove by the resetting elastic force of the second spring structure, effectively avoiding the shortcomings of the existing power quality assessment and improvement device in terms of portability, which is not convenient for field engineers to carry and hand-operate, which limits its use efficiency and flexibility to a certain extent.

[0025] 3. The present invention provides a protective cover. When the power quality evaluation and improvement device is stored, the protective cover is slid to the lowest end of the sliding slot. The display panel and control switches on both sides thereof are protected by the protective cover. When the power quality evaluation and improvement device is used, the protective cover is slid to the highest end of the sliding slot. The protective cover is then rotated by the rotating shaft so that the protective cover is on the upper surface of the chassis and parallel to the chassis, making the device more practical when used.

[0026] 4. The rubber block provided in the present invention increases the friction between the device and the ground or the tabletop when the device is placed on the ground or the tabletop for use or storage, thereby preventing the device from sliding and falling from a high place, thereby preventing the device from being damaged;

[0027] 5. The heat dissipation holes provided in the present invention facilitate the dissipation of heat generated by a series of electrical components inside the device during operation, thereby ensuring the normal operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0029] Figure 1 An isometric diagram of an improved device for power quality assessment and a control method thereof proposed by the present invention;

[0030] Figure 2 A three-dimensional schematic diagram of an improved device for power quality assessment and a control method thereof proposed by the present invention;

[0031] Figure 3 A three-dimensional schematic diagram of the rear side of an improved device for power quality assessment and a control method thereof proposed by the present invention;

[0032] Figure 4 The invention provides an improved device for power quality assessment and a control method thereof. Figure 3 The enlarged view of point A in the middle;

[0033] Figure 5 A three-dimensional schematic diagram of the bottom end of an improved device for power quality assessment and a control method thereof proposed by the present invention;

[0034] Figure 6 A three-dimensional schematic diagram of a handle in an improved device for power quality assessment and a control method thereof proposed by the present invention;

[0035] Figure 7 A cross-sectional view of a handle in an improved device for power quality assessment and a control method thereof proposed by the present invention;

[0036] In the figure: 1. base; 2. chassis; 3. heat dissipation hole; 4. display panel; 5. control switch; 6. sliding slot; 7. protective cover; 8. fixing rod; 9. rotating shaft; 10. handle slot; 11. handle; 12. card slot; 13. card block; 14. spring slot; 15. first spring structure; 16. second spring structure; 17. groove; 18. wiring slot; 19. pressure rod; 20. push rod; 21. third spring structure; 22. telescopic rod; 23. fourth spring structure; 24. limit ring; 25. block; 26. rubber block. DETAILED DESCRIPTION

[0037] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present disclosure, and do not specifically refer to any part or element in the present disclosure and should not be understood as limitations on the present disclosure.

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-7The present invention provides a technical solution: an improved device for power quality assessment, comprising a base 1 and a chassis 2, wherein the chassis 2 is fixedly mounted on the upper surface of the chassis 2, a groove 17 is provided on the upper end of the rear side surface of the chassis 2, a wiring groove 18 is provided on the lower end of the rear side surface of the chassis 2, a plurality of wiring ports are installed on the inner wall of the wiring groove 18, a telescopic rod 22 is installed on the upper and lower surfaces of the interior of the wiring groove 18, the output end of the telescopic rod 22 is transmission-connected to a limiting ring 24, the limiting ring 24 is a semi-annular structure, a fourth spring structure 23 is provided between the outer side of the limiting ring 24 and the inner wall of the wiring groove 18, a stopper 25 is fixedly connected to the two side surfaces of the limiting ring 24 at the lower end, a push rod 20 is slidably connected to the interior of the groove 17 and the wiring groove 18, a pressure rod 19 is fixedly connected to the upper end of the push rod 20, a third spring structure 21 is provided between the pressure rod 19 and the lower end of the interior of the groove 17, and the wiring head is connected to the push rod 20 by the provided limiting ring 24 and the fourth spring structure 23 when in use. After access to the wiring port, the wire at the rear end of the wiring head will be clamped on its inner side by the limiting ring 24, and the limiting ring 24 will be squeezed toward the middle through the elastic force of the fourth spring structure 23, so that the limiting ring 24 plays a role of fixing and engaging the wire at the rear end of the wiring head, preventing the wire from being accidentally touched and causing the wiring head to fall off from the wiring port. When the wiring head needs to be removed, the pressure rod 19 is manually pressed, and the pressure rod 19 drives the push rod 20 to be squeezed toward the lower end, and the stopper 25 is squeezed downward by the push rod 20, and the stopper 25 drives the limiting ring 24 at the lower end to slide downward, thereby expanding the distance between the upper and lower limiting rings 24, making it convenient to remove the wiring head from the limiting ring 24, effectively avoiding the problem that the traditional connection component structure design is relatively basic and lacks sufficient stability and anti-accidental touch characteristics. In actual operation, since the wiring head is easily separated from the wiring port due to accidental touch, this situation may cause unstable connection, thereby affecting the detection accuracy and reliability of the power quality assessment and improvement device;

[0042] A handle groove 10 is provided in the middle part of the upper surface of the chassis 2, and a handle 11 is slidably connected to the inside of the handle groove 10. A second spring structure 16 is provided between the lower surface of the handle 11 and the inner bottom end of the handle groove 10, and a plurality of second spring structures 16 are provided.

[0043] In the present invention, preferably, both side surfaces of the chassis 2 are provided with heat dissipation holes 3, and a plurality of heat dissipation holes 3 are provided. Through the provided heat dissipation holes 3, the heat generated by a series of electrical components inside the device during operation can be conveniently dissipated, thereby ensuring the normal operation of the device.

[0044] In the present invention, preferably, a display panel 4 and a control switch 5 are respectively installed on the front surface of the chassis 2, and a plurality of control switches 5 are provided.

[0045] In the present invention, preferably, both side surfaces of the chassis 2 are provided with sliding grooves 6 , and the interior of the sliding grooves 6 is slidably connected with sliding blocks.

[0046] In the present invention, preferably, the outer surface of the sliding block is rotatably connected to a protective cover 7 via a rotating shaft 9, and the protective cover 7 is slidably connected to the side surface of the chassis 2 via a protective groove. By setting the protective cover 7, when storing the power quality assessment and improvement device, the protective cover 7 is slid to the lowermost end of the sliding groove 6, and the display panel 4 and the control switch 5 on both sides thereof are protected by the protective cover 7. When using the power quality assessment and improvement device, the protective cover 7 is slid to the uppermost end of the sliding groove 6, and then the protective cover 7 is rotated by the rotating shaft 9, so that the protective cover 7 is on the upper surface of the chassis 2 and is parallel to the chassis 2, so that the device is more practical when used.

[0047] In the present invention, preferably, a fixing rod 8 is fixedly connected to the upper end of the side surface of the protective cover 7, and the fixing rod 8 facilitates manual sliding of the protective cover 7 for use.

[0048] In the present invention, preferably, rubber blocks 26 are fixedly connected to the four corners of the lower surface of the base 1, and a plurality of rubber blocks 26 are provided. Through the provided rubber blocks 26, when the device is placed on the ground or a table for use or storage, the rubber blocks 26 and the ground or the table contact each other, thereby increasing the friction between the device and the ground or the table, thereby preventing the device from sliding and falling from a height and causing damage to the device.

[0049] In the present invention, preferably, the upper ends of both sides of the handle groove 10 are penetrated by a clamping groove 12 .

[0050] In the present invention, preferably, spring grooves 14 are provided at the lower ends of both side surfaces of the handle 11, and a card block 13 is slidably connected inside the spring groove 14. A first spring structure 15 is provided between the card block 13 and the inner wall of the spring groove 14, and the card block 13 is engaged and connected inside the card groove 12. Through the provided structures such as the handle 11 and the card block 13, when the power quality assessment and improvement device is used to assess the power quality, the handle 11 is pulled downward by the elastic force of the second spring structure 16, so that the handle 11 enters the handle groove 10. When the device is moved, the handle 11 is pulled upward, and the second spring structure 16 is in In the stretched state, when the handle 11 is pulled to the limit, the card block 13 reaches the position of the card slot 12, and the card block 13 is ejected out of the spring slot 14 by the first spring structure 15 and is stuck in the card slot 12, thereby fixing the handle 11. At this time, the device can be lifted by the handle 11 to move, and the handle 11 is released, and the handle 11 is retracted into the handle slot 10 by the reset elastic force of the second spring structure 16, which effectively avoids the shortcomings of the existing power quality assessment and improvement device in terms of portability, and is not convenient for on-site engineers to carry and hand-operate, which to a certain extent limits its use efficiency and flexibility.

[0051] A control method for an improved device for power quality assessment comprises the following steps:

[0052] Step 1: Preparation and inspection: Before using the power quality assessment and improvement device, please ensure that the device has been correctly installed on the base 1, and check whether there is a groove 17 at the upper end of the rear surface of the chassis 2, whether there is a wiring groove 18 at the lower end, and whether there are several wiring ports installed on the inner wall of the wiring groove 18; at the same time, check whether the top rod 20, the pressure rod 19, the handle 11, the protective cover 7 and other components are intact, and ensure that the heat dissipation hole 3 is unobstructed;

[0053] Step 2: Wiring and fixing: insert the wiring head into the wiring port, and ensure that the wire at the rear end of the wiring head is fixed and engaged by the limiting ring 24 to prevent the wire from falling off; press the pressing rod 19 to make the top rod 20 press the stopper 25 downward, so that the limiting ring 24 slides downward, and the distance between the upper and lower limiting rings 24 is expanded, so as to facilitate the removal of the wiring head from the inside of the limiting ring 24;

[0054] Step 3: Startup and debugging: Turn on the control switch 5 to start the power quality assessment and improvement device; observe the data on the display board 4, debug the device as needed to ensure its normal operation;

[0055] Step 4: Move and carry: Press the handle 11 to make it enter the handle groove 10; pull the handle 11 upward until the block 13 is inserted into the groove 12 to fix the handle 11; lift the device to move; after reaching the destination, release the handle 11 to retract it into the handle groove 10 by the restoring elastic force of the second spring structure 16;

[0056] Step 5: Protection and storage: After use, slide the protective cover 7 to the bottom of the sliding slot 6 to protect the display panel 4 and the control switch 5 on both sides thereof; place the device on the base 1; the rubber block 26 on the lower surface of the base 1 increases the friction with the ground or the desktop to prevent the device from sliding; turn off the control switch 5 and cut off the power supply; when storing, keep the heat dissipation holes 3 of the chassis 2 unobstructed to ensure that the heat generated by the internal electrical components can be effectively dissipated.

[0057] Embodiment 1

[0058] An improved device for power quality assessment and a control method thereof, comprising the following steps:

[0059] Step 1: The operator uses the power quality assessment and improvement device to fix and remove the terminal block;

[0060] Step 2: Check whether the base 1 and chassis 2 are firmly installed;

[0061] Step 3: Confirm the groove 17 on the upper end of the rear surface of the chassis 2 and the wiring slot 18 on the lower end;

[0062] Step 4: Check whether there are several wiring ports installed on the inner wall of the wiring slot 18;

[0063] Step 5: Check whether the push rod 20, the pressure rod 19, the handle 11, the protective cover 7 and other components are intact;

[0064] Step 6: Make sure the heat dissipation hole 3 is unobstructed;

[0065] Step 7: Insert the terminal head into the wiring port; ensure that the wire at the rear end of the terminal head is fixed and engaged by the limiting ring 24; press the pressure rod 19 to make the top rod 20 press the stopper 25 downward; observe the limiting ring 24 sliding downward to facilitate the removal of the terminal head from the inside of the limiting ring 24.

[0066] Embodiment 2

[0067] An improved device for power quality assessment and a control method thereof, comprising the following steps:

[0068] Step 1: The operator starts and debugs the power quality assessment and improvement device;

[0069] Step 2: Turn on the control switch 5 to start the power quality assessment and improvement device;

[0070] Step 3: Observe the data on the display panel 4;

[0071] Step 4: Debug the device as needed;

[0072] Step 5: Ensure the device is operating normally.

[0073] Embodiment 3

[0074] An improved device for power quality assessment and a control method thereof, comprising the following steps:

[0075] Step 1: The operator moves and carries the power quality assessment and improvement device;

[0076] Step 2: Press the handle 11 to make it enter the handle groove 10;

[0077] Step 3: Pull the handle 11 upward until the card block 13 is inserted into the card slot 12;

[0078] Step 4: Fixing the handle 11;

[0079] Step 5: Lift the device to move;

[0080] Step 6: After reaching the destination, release the handle 11;

[0081] Step 7: Observe that the handle 11 is retracted into the handle groove 10 by the restoring elastic force of the second spring structure 16 .

[0082] Embodiment 4

[0083] An improved device for power quality assessment and a control method thereof, comprising the following steps:

[0084] Step 1: Operator protection and storage of power quality assessment and improvement devices;

[0085] Step 2: After use, slide the protective cover 7 to the bottom of the sliding slot 6;

[0086] Step 3: Protect the display panel 4 and the control switches 5 on both sides thereof;

[0087] Step 4: Place the device on the base 1;

[0088] Step 5: The rubber block 26 on the lower surface of the base 1 increases the friction with the ground or the tabletop to prevent the device from sliding;

[0089] Step 6: Turn off the control switch 5 and cut off the power supply;

[0090] Step 7: During storage, keep the heat dissipation holes 3 of the chassis 2 unobstructed to ensure that the heat generated by the internal electrical components can be effectively dissipated.

[0091] Embodiment 5

[0092] An improved device for power quality assessment and a control method thereof, comprising the following steps:

[0093] Step 1: The operator uses the power quality assessment and improvement device for heat dissipation and protection;

[0094] Step 2: Ensure that the heat dissipation holes 3 are unobstructed so that the heat generated by the internal electrical components can be effectively dissipated;

[0095] Step 3: After use, slide the protective cover 7 to the bottom of the sliding slot 6;

[0096] Step 4: Protect the display panel 4 and the control switches 5 on both sides thereof;

[0097] Step 5: Confirm that the upper end of the side surface of the protective cover 7 is fixedly connected with a fixing rod 8 to facilitate manual sliding of the protective cover 7 for use.

[0098] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0099] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0100] Although the above describes the specific implementation methods of the present application in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present application. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present application, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present application.

Claims

1. An improved device for power quality assessment, comprising a base (1) and a chassis (2), characterized in that: The chassis (2) is fixedly mounted on the upper surface of the base (1); a groove (17) is provided at the upper end of the rear side surface of the chassis (2); a wiring groove (18) is provided at the lower end; a plurality of wiring ports are installed on the inner wall of the wiring groove (18); telescopic rods (22) are installed on the upper and lower surfaces of the interior of the wiring groove (18); the output end of the telescopic rod (22) is connected to a limit ring (24); the limit ring (24) is a semi-annular structure; a fourth spring structure (23) is provided between the outer side of the limit ring (24) and the inner wall of the wiring groove (18); both side surfaces of the limit ring (24) at the lower end are fixedly connected with stoppers (25); a push rod (20) is slidably connected to the interior of the groove (17) and the wiring groove (18); a pressure rod (19) is fixedly connected to the upper end of the push rod (20); a third spring structure (21) is provided between the pressure rod (19) and the lower end of the interior of the groove (17); A handle groove (10) is provided in the middle part of the upper surface of the chassis (2), a handle (11) is slidably connected inside the handle groove (10), a second spring structure (16) is provided between the lower surface of the handle (11) and the inner bottom end of the handle groove (10), and a plurality of second spring structures (16) are provided.

2. The improved device for power quality assessment according to claim 1, characterized in that: Both side surfaces of the chassis (2) are provided with heat dissipation holes (3), and a plurality of the heat dissipation holes (3) are provided.

3. The improved device for power quality assessment according to claim 1, characterized in that: A display panel (4) and a control switch (5) are installed on the front surface of the chassis (2).

4. The improved device for power quality assessment according to claim 1, characterized in that: Sliding grooves (6) are provided on both side surfaces of the chassis (2), and sliding blocks are slidably connected inside the sliding grooves (6).

5. The improved device for power quality assessment according to claim 4, characterized in that: The outer surface of the sliding block is rotatably connected to a protective cover (7) via a rotating shaft (9), and the protective cover (7) is slidably connected to the side surface of the chassis (2) via a protective groove.

6. The improved device for power quality assessment according to claim 5, characterized in that: A fixing rod (8) is fixedly connected to the upper end of the side surface of the protective cover (7).

7. The improved device for power quality assessment according to claim 1, characterized in that: The four corners of the lower surface of the base (1) are fixedly connected with rubber blocks (26), and a plurality of rubber blocks (26) are provided.

8. The improved device for power quality assessment according to claim 1, characterized in that: The upper ends of both sides of the handle groove (10) are penetrated by clamping grooves (12).

9. The improved device for power quality assessment according to claim 1, characterized in that: The lower ends of both side surfaces of the handle (11) are provided with spring grooves (14), the interior of the spring groove (14) is slidably connected with a clamping block (13), a first spring structure (15) is provided between the clamping block (13) and the inner wall of the spring groove (14), and the clamping block (13) is clamped and connected inside the clamping groove (12).

10. A control method for an improved device for power quality assessment according to claims 1-9, characterized in that: The following steps are involved: Step 1: Preparation and inspection: Before using the power quality assessment and improvement device, please ensure that the device has been correctly installed on the base (1), and check whether there is a groove (17) at the upper end of the rear surface of the chassis (2), whether there is a wiring groove (18) at the lower end, and whether there are a number of wiring ports installed on the inner wall of the wiring groove (18); at the same time, check whether the top rod (20), the pressure rod (19), the handle (11), and the protective cover (7) are intact, and ensure that the heat dissipation hole (3) is unobstructed; Step 2: Wiring and fixing: insert the wiring head into the wiring port, and ensure that the wire at the rear end of the wiring head is fixedly engaged by the limiting ring (24) to prevent the wire from falling off; press the pressure rod (19) to make the top rod (20) press the stopper (25) downward, thereby making the limiting ring (24) slide downward, and expand the distance between the upper and lower limiting rings (24), so as to facilitate the removal of the wiring head from the inside of the limiting ring (24); Step 3: Startup and commissioning: Turn on the control switch (5) to start the power quality assessment and improvement device; Observe the data on the display panel (4) and debug the device as needed to ensure its normal operation; Step 4: Moving and carrying: Press the handle (11) to allow it to enter the handle groove (10); pull the handle (11) upward until the clamping block (13) is clamped into the clamping groove (12) to fix the handle (11); lift the device to move; after reaching the destination, release the handle (11) to allow it to retract into the handle groove (10) through the restoring elastic force of the second spring structure (16); Step 5: Protection and storage: After use, slide the protective cover (7) to the bottom of the sliding slot (6) to protect the display panel (4) and the control switch (5) structures on both sides thereof; place the device on the base (1); the rubber block (26) on the lower surface of the base (1) increases the friction with the ground or the tabletop to prevent the device from sliding; turn off the control switch (5) and cut off the power supply; when storing, keep the heat dissipation holes (3) of the chassis (2) unobstructed to ensure that the heat generated by the internal electrical components can be effectively dissipated.

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