A distributed harmonic monitoring device and method of use thereof

Abstract

The application discloses a kind of distributed harmonic monitoring devices, including several monitoring components, with the sliding component of monitoring component connection, set between adjacent monitoring components and the burst component, set at the recycling component of several monitoring components both ends, and setting on the adjustment component of each monitoring component;Sliding component is slidably connected with cable, and monitoring component is located below sliding component;Burst piece one end is fixedly connected with adjacent monitoring component, one end is not connected with adjacent monitoring component or is connected by rope;Burst component is used to store potential energy, for pushing monitoring component movement along cable direction;Recycling component is used to gather several monitoring components to central position or the monitoring component of one side on both sides;Adjustment component is used to enhance or attenuate the potential energy of burst component, realize the position of monitoring component on cable is slightly adjusted;Monitoring component is provided with balance component below, for balancing monitoring component.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power grid harmonic monitoring, and particularly relates to a distributed harmonic monitoring device and a use method thereof. BACKGROUND

[0002] With the wide application of power electronic devices in various industries, harmonic pollution in the power grid is increasingly prominent. A large amount of harmonic current is inevitably injected into the power grid by the power electronic devices in operation, resulting in distortion of voltage and current in the power grid and affecting the safe and stable operation of the power grid and electrical equipment. Harmonic source positioning is the basis for dividing the harmonic responsibility of each harmonic source and harmonic pollution control.

[0003] The harmonic source monitoring method in the prior art is to introduce signals into the internal measurement instrument through the connection terminal and the wire, and the problem of this method is that the harmonic monitoring device needs to be installed at different positions of the cable manually, and this invasive contact type measurement method increases the complexity of engineering construction and the probability of system abnormality and failure.

[0004] In order to solve the above problems, the harmonic source monitoring device in the prior art is improved to solve the above problems. SUMMARY

[0005] The present application overcomes the shortcomings of the prior art and provides a distributed harmonic monitoring device and a use method thereof.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a distributed harmonic monitoring device, comprising: a plurality of monitoring components, a sliding component connected with the monitoring components, an explosion component arranged between adjacent monitoring components, a recovery component arranged at both ends of the plurality of monitoring components, and an adjustment component arranged on each monitoring component.

[0007] The sliding component is in sliding connection with the cable, and the monitoring component is located below the sliding component; one end of the explosion component is fixedly connected with the adjacent monitoring component, and the other end is not connected with the adjacent monitoring component or is connected with the adjacent monitoring component through a rope; the explosion component is used for storing potential energy and pushing the monitoring component to move along the direction of the cable; the recovery component is used for gathering the plurality of monitoring components on both sides to the central position or the monitoring component on one side; and the adjustment component is used for enhancing or attenuating the potential energy of the explosion component to realize the micro-adjustment of the position of the monitoring component on the cable.

[0008] A balance component is arranged below the monitoring component to balance the monitoring component.

[0009] In a preferred embodiment of the present application, the sliding assembly comprises a sliding shell, a sliding wheel rotatably connected inside the sliding shell, and a brake disc connected with the sliding wheel; the surface of the sliding wheel is provided with a sliding groove matched with the cable, and the depth of the sliding groove is not less than the diameter of the cable.

[0010] In a preferred embodiment of the present application, the monitoring assembly comprises a monitoring shell, an electronic transformer, a DSP data acquisition unit and a transmission unit arranged inside the monitoring shell.

[0011] In a preferred embodiment of the present application, the burst assembly comprises a burst shell, a telescopic rod arranged inside the burst shell, a positioning rod slidably connected with the telescopic rod, a gasket connected with the positioning rod, and an elastic unit connecting the gasket and the telescopic rod; the telescopic rod is connected with the monitoring assembly.

[0012] In a preferred embodiment of the present application, the adjusting assembly comprises a tank body, a plurality of pressurizing units connected with the tank body, an air outlet valve arranged on each pressurizing unit, and an air outlet pipe connected with the air outlet valve; the air outlet valve is used to adjust the release amount of pressurized gas in the pressurizing unit.

[0013] In a preferred embodiment of the present application, the central axes of a plurality of the air outlet pipes form an angle with the cable, and the air outlet pipes are arranged in a central symmetry.

[0014] In a preferred embodiment of the present application, a plurality of the air outlet pipes arranged in a central symmetry along the length direction of the monitoring assembly intermittently spray the pressurized gas.

[0015] In a preferred embodiment of the present application, the balancing assembly is a suspended counterweight.

[0016] The present application provides a use method of a distributed harmonic monitoring device, comprising the following steps:

[0017] A1, by installing the monitoring device at the center position of the cable; by controlling the burst assembly at the center position to release potential energy, driving the monitoring device to move towards both ends of the cable; during the movement process, a plurality of burst pieces gradually release potential energy, and a plurality of monitoring assemblies gradually separate;

[0018] A2, when the micro-adjustment of the adjusting assembly is consistent with the potential energy release direction of the burst assembly, the displacement amount of the sliding assembly is enhanced; when the micro-adjustment of the adjusting assembly is opposite to the potential energy release direction of the burst assembly, the displacement amount of the sliding assembly is attenuated;

[0019] A3, the monitoring assembly collects the power harmonic signal of the cable;

[0020] A4, the monitoring assembly is gathered to the center position or the monitoring assembly on one side by the recycling assembly, and recycling is realized.

[0021] The application provides another use method of the distributed harmonic monitoring device, and the method comprises the following steps:

[0022] B1, the monitoring device is installed at the edge position of the cable; the potential energy release degree of different burst assemblies is controlled, and the monitoring assembly is gradually separated and moved to the other direction of the cable in sequence by gradual release of the burst assemblies;

[0023] B2, when the micro-adjustment of the adjusting assembly is consistent with the potential energy release direction of the burst assembly, the displacement of the sliding assembly is enhanced; when the micro-adjustment of the adjusting assembly is opposite to the potential energy release direction of the burst assembly, the displacement of the sliding assembly is attenuated;

[0024] B3, the monitoring assembly collects the power harmonic signals of the cable;

[0025] B4, the monitoring assembly is gathered to the center position or the monitoring assembly on one side by the recycling assembly, and recycling is realized.

[0026] The application solves the defects in the background art, and has the following beneficial effects:

[0027] (1) The application provides a distributed harmonic monitoring device, which is suitable for a power distribution network with a structure of high in the two ends and low in the middle, the monitoring device is separated into multiple parts by the burst assembly, and the monitoring assembly is driven to move to a specified position by the potential energy released by the burst assembly, so that the problem that the harmonic monitoring device needs to be manually installed at different positions of the cable is solved, and automatic positioning of the monitoring device is realized.

[0028] (2) The burst assembly in the application adjusts the length of the compression of the elastic unit to adjust the degree of potential energy storage; and the burst assembly adopts a sequential burst mode, the orderliness of sequential burst, forms multiple burst energy levels, ensures the uniform distribution of the monitoring assembly, and the simultaneous movement of multiple monitoring assemblies is beneficial to ensuring the stability of the monitoring assembly.

[0029] (3) The application realizes the function of enhancing or attenuating potential energy by the cooperation of the air outlet pipe and the burst assembly, so that the positioning device can slide on the cable in different suspension forms, and the stability of the monitoring device during sliding is ensured.

[0030] (4) The application provides a balance assembly at the bottom of the monitoring assembly, and the balance assembly is a suspension counterweight, and the purposes are as follows: 1, balancing effect is achieved, and the wind resistance of the monitoring device is improved; 2, the contact between the cable and the sliding wheel groove is increased, the separation of the cable and the sliding wheel is prevented, and the stability during sliding is improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative effort based on these drawings also belong to the protection scope of the present application.

[0032] Figure 1 is a perspective structural schematic diagram of a distributed harmonic monitoring device which is a preferred embodiment of the present application;

[0033] Figure 2 is a perspective structural schematic diagram of a sliding assembly and an adjusting assembly which are preferred embodiments of the present application;

[0034] Figure 3 is a perspective structural schematic diagram of an explosion assembly which is a preferred embodiment of the present application;

[0035] Figure 4 is a perspective structural schematic diagram of a telescopic rod and a positioning rod which are preferred embodiments of the present application;

[0036] Figure 5 is a schematic diagram of the cooperation movement of the telescopic rod and the positioning rod which are preferred embodiments of the present application;

[0037] In the drawings: 1, distributed harmonic monitoring device; 2, monitoring assembly; 3, sliding assembly; 31, sliding shell; 32, sliding wheel; 33, brake disc; 4, explosion assembly; 41, explosion shell; 42, telescopic rod; 43, positioning rod; 44, gasket; 45, elastic unit; 46, rope; 47, rolling wheel; 5, recovery assembly; 6, adjusting assembly; 61, tank body; 62, pressure increasing unit; 63, air outlet valve; 64, air outlet pipe. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely in the following description with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0039] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced without the specific details, other than those described herein, and therefore, the scope of the present application is not limited to the details of the following description.

[0040] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0041] In the description of the present application, it needs to be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0042] As shown in Figure 1 A three-dimensional structure schematic diagram of a distributed harmonic monitoring device 1 in the present application is shown. The distributed harmonic monitoring device 1 is used to distribute a plurality of monitoring components 2 to the length direction of the cable, so as to realize the monitoring of the power harmonic signal.

[0043] It needs to be explained that the cable of the present application is a non-horizontal structure, because the cable of the power distribution network in the prior art is a suspension type, combined with the length and weight of the cable itself, so that the cable presents a structure of high in the middle and low in the middle, presenting two states of "climbing" or "sliding" of the monitoring device when distributed.

[0044] The distributed harmonic monitoring device 1 comprises: a plurality of monitoring components 2, a sliding component 3 connected with the monitoring component 2, an explosion component 4 arranged between adjacent monitoring components 2, a recovery component 5 arranged at both ends of the plurality of monitoring components 2, and an adjustment component 6 arranged on each monitoring component 2.

[0045] The sliding assembly 3 is in sliding connection with the cable, and the monitoring assembly 2 is located below the sliding assembly 3; one end of the burst assembly is fixedly connected with the adjacent monitoring assembly 2, and the other end is not connected with the adjacent monitoring assembly 2 or is connected through a rope 46; the burst assembly 4 is used for storing potential energy and is used for pushing the monitoring assembly 2 to move along the cable direction; the recovery assembly 5 is used for gathering the monitoring assemblies 2 on both sides to the central position or the monitoring assembly 2 on one side; and the adjusting assembly 6 is used for enhancing or attenuating the potential energy of the burst assembly 4, so as to realize the micro-adjustment of the position of the monitoring assembly 2 on the cable.

[0046] As shown in Figure 2 , a three-dimensional structure schematic diagram of the sliding assembly 3 and the adjusting assembly 6 in the application is shown. The sliding assembly 3 comprises a sliding shell 31, a sliding wheel 32 rotatably connected in the sliding shell 31, and a brake disc 33 connected with the sliding wheel 32, and the sliding shell 31 is a concave structure. The sliding wheel 32 is preferably connected with the sliding shell 31 through a rotating shaft, and the brake disc 33 is connected with one side of the rotating shaft. The brake disc 33 is provided with a brake caliper in the circumferential direction. It should be noted that, in order to further improve the stability of the monitoring device, a balance disc equal in mass to the brake disc 33 is arranged on the other side of the rotating shaft.

[0047] The surface of the sliding wheel 32 is provided with a sliding groove matched with the cable, and the depth of the sliding groove is not less than the diameter of the cable, so as to ensure the balance or stability when the sliding wheel 32 rotates.

[0048] The monitoring assembly 2 comprises a monitoring shell, an electronic transformer, a DSP data acquisition unit and a transmission unit arranged in the monitoring shell. The monitoring shell is connected with the sliding shell 31. The power harmonic signal is monitored through the electronic transformer, and after being pretreated by the DSP data acquisition unit, the signal is transmitted to the terminal through the transmission unit, so as to realize automatic signal acquisition.

[0049] As shown in Figure 3 , a three-dimensional structure schematic diagram of the burst assembly 4 in the application is shown. The burst assembly 4 in the application comprises a burst shell 41, a telescopic rod 42 arranged in the burst shell 41, a positioning rod 43 in sliding connection with the telescopic rod 42, a gasket 44 connected with the positioning rod 43, and an elastic unit 45 connecting the gasket 44 and the telescopic rod 42. The positioning rod 43 is fixedly connected with the burst shell 41 through the gasket 44. The telescopic rod 42 comprises a sliding part, an abutting part and a connecting part. The sliding part is a hollow column structure, one end of the abutting part is used for fixing the elastic unit 45, and the connecting part is a rod-shaped structure and is used for connecting the monitoring shell.

[0050] As shown in Figure 4As shown in the figure, a perspective structural schematic diagram of the telescopic rod 42 and the positioning rod 43 in the application is shown. The inner diameter of the sliding part in the application is greater than the positioning rod 43, the sliding part slides in the length direction of the positioning rod 43, the interval between the abutting part and the gasket 44 is changed, the compression or stretching of the elastic unit 45 is realized, and then the storage and release of the potential energy are realized. When the potential energy is released, the connecting part of the sliding rod drives the monitoring assembly 2 to move in the length direction of the cable.

[0051] As shown in the figure, in a preferred embodiment, the inner wall of the sliding part is provided with a rolling wheel 47, and the positioning rod 43 is provided with a rolling groove matched with the rolling wheel 47, so that the rolling wheel 47 drives the sliding part to move in the length direction of the rolling groove. Figure 5

[0052] The elastic unit 45 in the application is preferably a spring, and the length and rigidity of the spring can be determined according to the actual required moving distance, and a spring with different rigidity can be selected by those skilled in the art.

[0053] It should be noted that if the monitoring device adopts the mode of explosion from the center to both sides, the potential energy stored by the explosion assembly 4 from the center to both ends of the monitoring device decreases in turn; if the monitoring device adopts the mode of explosion from one end to the other end, the potential energy stored by the explosion assembly 4 from one end to the other end of the monitoring device decreases in turn. In the application, whether the center explosion or the edge explosion is adopted, the explosion assembly 4 is controlled to explode in turn, that is, the potential energy of the explosion assembly 4 corresponding to more monitoring assemblies 2 is stored more. The orderliness of the explosion in turn forms multiple explosion energy levels, which ensures the uniform distribution of the monitoring assemblies 2, and the simultaneous movement of the multiple monitoring assemblies is beneficial to ensure the stability of the monitoring assemblies.

[0054] The adjusting assembly 6 in the application comprises: a tank body 61, a plurality of pressurizing units 62 connected with the tank body 61, an air outlet valve 63 arranged on each pressurizing unit 62, and an air outlet pipe 64 connected with the air outlet valve 63; the air outlet valve 63 is used for adjusting the release amount of the pressurized gas in the pressurizing unit 62.

[0055] The central axes of the plurality of air outlet pipes 64 form a certain angle with the cable, and the air outlet pipes 64 are centrally symmetrically arranged, and the application is preferably 30°-45°. The plurality of air outlet pipes 64 which are axisymmetric along the length direction of the monitoring assembly 2 intermittently inject pressurized gas.

[0056] ​The application preferably comprises four air outlet pipes 64. When the monitoring device moves towards the high cable, the air outlet pipes 64 spray the pressurized gas in the direction opposite to the movement direction, thereby increasing the potential energy, so that the monitoring device can impact the vicinity of the specified position in one burst. When the monitoring device moves towards the low cable, the air outlet pipes 64 spray the pressurized gas in the same direction as the movement direction, thereby reducing the potential energy, preventing the monitoring device from exceeding the specified position, and preventing the lateral turning caused by the too fast burst speed.

[0057] The application comprises a balance assembly arranged below the monitoring assembly 2, which is a suspended counterweight. The balance assembly has the following purposes: 1. balancing effect, improving the wind resistance of the monitoring device; 2. increasing the contact between the cable and the groove of the sliding wheel 32, preventing the separation of the cable and the sliding wheel 32, and improving the stability during sliding.

[0058] The application comprises a recovery assembly 5, which can have the same structure as the burst assembly 4. The burst assembly 4 is connected to the monitoring assembly 2 at one end or both ends of the monitoring device, and also adopts the burst gathering mode. The monitoring device is formed as a whole by the propelling force generated by the burst.

[0059] The application provides a use method of the distributed harmonic monitoring device 1, which comprises the following steps:

[0060] A1. The monitoring device is installed at the center position of the cable. The burst assembly 4 at the center position is controlled to release the potential energy, thereby driving the monitoring device to move towards the two ends of the cable. During the movement, the potential energy of the burst assembly 4 is gradually released, and the monitoring assembly 2 is gradually separated.

[0061] A2. When the micro-adjustment of the adjustment assembly 6 is consistent with the potential energy release direction of the burst assembly 4, the displacement amount of the sliding assembly 3 is enhanced. When the micro-adjustment of the adjustment assembly 6 is opposite to the potential energy release direction of the burst assembly 4, the displacement amount of the sliding assembly 3 is attenuated.

[0062] A3. The monitoring assembly 2 collects the power harmonic signals of the cable.

[0063] A4. The monitoring assembly 2 is gathered to the center position or the monitoring assembly 2 on one side by the recovery assembly 5, thereby achieving the recovery.

[0064] The application provides another use method of the distributed harmonic monitoring device 1, which comprises the following steps:

[0065] B1. The monitoring device is installed at the edge position of the cable. The potential energy release degree of different burst assemblies 4 is controlled, and the burst assemblies 4 are gradually released, so that the monitoring assembly 2 is gradually separated and moved in the other direction of the cable.

[0066] B2、when the micro-adjustment of the adjustment assembly 6 is consistent with the potential energy release direction of the burst assembly 4, the displacement amount of the sliding assembly 3 is enhanced; when the micro-adjustment of the adjustment assembly 6 is opposite to the potential energy release direction of the burst assembly 4, the displacement amount of the sliding assembly 3 is attenuated;

[0067] B3、the monitoring assembly 2 collects the power harmonic signals of the cable;

[0068] B4、the monitoring assembly 2 is gathered to the central position or the monitoring assembly 2 on one side by the recycling assembly 5, and recycling is realized.

[0069] The above is based on the ideal embodiment of the application, and through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the application. The technical scope of the application is not limited to the content of the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A distributed harmonic monitoring device, characterized by, The application relates to a cable monitoring device. The device comprises a plurality of monitoring components, a sliding component connected with the monitoring components, an explosion component arranged between adjacent monitoring components, a recovery component arranged at the two ends of the monitoring components, and an adjusting component arranged on each monitoring component. The sliding component is slidingly connected with a cable, and the monitoring component is arranged below the sliding component; one end of the explosion component is fixedly connected with adjacent monitoring components, and the other end is not connected with adjacent monitoring components or is connected with adjacent monitoring components through a rope; the explosion component is used for storing potential energy and pushing the monitoring component to move along the cable; the recovery component is used for gathering a plurality of monitoring components on the two sides to the center position or to one side of the monitoring components; and the adjusting component is used for enhancing or attenuating the potential energy of the explosion component, so as to slightly adjust the position of the monitoring component on the cable. A balance component is arranged below the monitoring component and is used for balancing the monitoring component.

2. A distributed harmonic monitoring device according to claim 1, characterised in that: The sliding component comprises a sliding shell, a sliding wheel rotatingly connected in the sliding shell, and a brake disc connected with the sliding wheel; the surface of the sliding wheel is provided with a sliding groove matched with the cable, and the depth of the sliding groove is not less than the diameter of the cable.

3. The distributed harmonic monitoring device of claim 1, wherein: The monitoring component comprises a monitoring shell, an electronic mutual inductor, a DSP data acquisition unit and a transmission unit arranged in the monitoring shell.

4. The distributed harmonic monitoring apparatus of claim 1, wherein: The explosion component comprises an explosion shell, an extension rod arranged in the explosion shell, a positioning rod slidingly connected with the extension rod, a gasket connected with the positioning rod, and an elastic unit connecting the gasket and the extension rod; the extension rod is connected with the monitoring component.

5. The distributed harmonic monitoring device of claim 1, wherein: The adjusting component comprises a tank, a plurality of pressurizing units connected with the tank, an air outlet valve arranged on each pressurizing unit, and an air outlet pipe connected with the air outlet valve; the air outlet valve is used for adjusting the release amount of pressurized gas in the pressurizing unit.

6. A distributed harmonic monitoring device according to claim 5, characterised in that: The central axes of a plurality of air outlet pipes form a certain angle with the cable, and the air outlet pipes are centrally arranged.

7. A distributed harmonic monitoring device according to claim 5, characterised in that: A plurality of air outlet pipes symmetrically arranged along the length direction of the monitoring component intermittently spray the pressurized gas.

8. The distributed harmonic monitoring device of claim 1, wherein: The balance component is a suspended counterweight.

9. Use of a distributed harmonic monitoring device according to any one of claims 1-8, characterized in that, The application further relates to a cable monitoring method. A1. The monitoring device is installed at the center position of the cable; the potential energy of the explosion component at the center position is released to drive the monitoring device to move to the two ends of the cable; in the movement process, the potential energy of a plurality of explosion components is gradually released, and a plurality of monitoring components are gradually separated; A2. When the slight adjustment of the adjusting component is consistent with the potential energy release direction of the explosion component, the displacement of the sliding component is enhanced; when the slight adjustment of the adjusting component is opposite to the potential energy release direction of the explosion component, the displacement of the sliding component is attenuated; A3. The monitoring component collects the power harmonic signals of the cable; A4. The monitoring components are gathered to the center position or one side of the monitoring components through the recovery component, so as to realize recovery.

10. Use of a distributed harmonic monitoring device according to any one of claims 1-8, characterized in that, The application further relates to a cable monitoring method. B1、through the installation of monitoring devices at the edge position of the cable; through the control of the degree of potential energy release of different burst components, and the gradual release of several burst components, so that the monitoring components gradually separate and move in another direction of the cable in turn; B2、when the micro-adjustment of the adjustment component is consistent with the direction of potential energy release of the burst component, the displacement amount of the sliding component is enhanced; when the micro-adjustment of the adjustment component is opposite to the direction of potential energy release of the burst component, the displacement amount of the sliding component is attenuated; B3、the monitoring components collect the power harmonic signals of the cable; B4、through the recovery component, the monitoring components are gathered to the central position or the monitoring components on one side, so as to realize recovery.

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