Line load acquisition device and method

Abstract

The invention relates to the technical field of power systems, in particular to a line load acquisition device and method.The line load acquisition device comprises an information acquisition unit arranged on a single line, and the information acquisition unit comprises an installation component detachably connected with the line, an acquisition module and an induction power taking module, the induction electricity obtaining module provides working voltage for the acquisition module through induction electricity obtaining when current passes through a line. And the data processing unit is in communication connection with the acquisition modules on any circuit, the data processing unit comprises a main machine body installed at the ground end and a processing module arranged in the main machine body, and the processing module is used for receiving the electric signals sent by the acquisition modules and calculating the circuit load. According to the invention, through cooperation of the information acquisition unit and the data processing unit, continuous and stable acquisition of loads of a plurality of single lines can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power systems, and in particular to a line load acquisition device and method. Background Art

[0002] The load acquisition device is a device used to monitor and analyze the operation and energy consumption of each electrical device in the power system. When collecting the load of the transmission line, since in most cases there are multiple parallel transmission lines (such as three-phase lines), the existing technology generally uses overall monitoring for line compliance detection of multiple parallel lines, but in practice, there will be imbalance in current and voltage between multiple parallel lines, which will lead to inaccurate overall monitoring results.

[0003] In order to achieve accurate monitoring, it is necessary to collect load for each single line. In actual operation, since some devices rely on external power supply, once there is a problem with the power supply, the collection work will be affected. The use of multi-line collection and monitoring will lead to increased power consumption and cannot provide stable power to the device for a long time. In addition, since the location of the transmission lines is too high, the installation of traditional load collection devices often requires complex operations and tools, and may even require power outages. Not only does it affect normal power supply, but the installation process is time-consuming and labor-intensive, which brings inconvenience to the replacement and supplement of external power supplies. In addition, the existing line load collection devices are difficult to achieve flexible timing and staged collection, and cannot accurately obtain the line current load conditions in a specific time period according to actual needs. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the problem that it is inconvenient to continuously and stably collect the load of a single line in the above or existing technologies, the present invention is proposed.

[0006] Therefore, one of the objects of the present invention is to provide a line load acquisition device.

[0007] In order to solve the technical problem, the present invention provides the following technical solution: a line load collection device, comprising:

[0008] An information collection unit arranged on a single line, comprising a mounting component detachably connected to the line, and a collection module and an induction power acquisition module respectively connected to the mounting component, wherein the induction power acquisition module obtains power by induction when current passes through the line to provide a working voltage for the collection module, and the collection module detects the current and / or voltage signal in the line and converts it into an electrical signal for output; and,

[0009] A data processing unit establishes a communication connection with the acquisition module on any line, and includes a main body installed on the ground end, and a processing module arranged in the main body, wherein the processing module is used to receive the electrical signal sent by the acquisition module and calculate the line load.

[0010] As a preferred solution of the line load acquisition device of the present invention, the inductive power acquisition module includes an iron core arranged inside, a coil wound on the iron core, and a voltage stabilizing circuit connected between the coil and the acquisition module;

[0011] The voltage stabilizing circuit processes the electric energy obtained by induction in a stable manner to provide a stable operating voltage for the acquisition module.

[0012] As a preferred solution of the line load acquisition device of the present invention, wherein: the acquisition module includes a mutual inductor, a signal conditioning circuit and a microcontroller connected to each other through a circuit;

[0013] The mutual inductor is used to detect the current signal in the circuit in real time and output it as an electrical signal.

[0014] The signal conditioning circuit is used to amplify and filter the signal output by the mutual inductor.

[0015] The microcontroller is used to detect the current signal in the line according to a preset acquisition strategy.

[0016] As a preferred solution of the line load acquisition device of the present invention, wherein: the data processing unit further includes a storage module and a remote communication module arranged in the main body;

[0017] The storage module is used to store the data processed by the processing module;

[0018] The remote communication module is used to upload the processed data to the remote monitoring terminal.

[0019] As a preferred solution of the line load collection device described in the present invention, the installation component includes a shell connected to the collection module, a receiving groove arranged on one side of the shell and adapted to the cable, and a blocking member arranged on one side of the shell and used to prevent the cable from escaping from the receiving groove.

[0020] As a preferred solution of the line load collection device of the present invention, wherein: an opening communicating with the outside of the housing is provided on one side of the housing, and the cable enters and exits the housing through the opening;

[0021] The size of the opening is adjustable, and the blocking member is used to limit and keep the size of the opening smaller than the diameter of the cable.

[0022] As a preferred solution of the line load collection device of the present invention, wherein: the housing comprises a housing 1 and a housing 2 which are hinged to each other, and the opening of the accommodating groove is formed between the housing 1 and the housing 2;

[0023] The blocking member includes an elastic protrusion arranged on one side of shell one, and a slot arranged on one side of shell two and adapted to the elastic protrusion. When shell one and shell two are relatively rotated until the opening size is smaller than the cable diameter size, the elastic protrusion and the slot are engaged with each other to fix the opening size.

[0024] The beneficial effects of a line load collection device of the present invention are as follows: the present invention can realize continuous and stable collection of multiple single line loads respectively through the cooperation between the information collection unit and the data processing unit; the design of the snap-on mutual inductor does not require too many complicated operations and power outages, which greatly shortens the installation time, improves the installation efficiency, and reduces the interference with normal power supply; the main body of the data processing unit is reasonably installed in a reasonable position, combined with the remote monitoring terminal, it is convenient for the staff to remotely view the line load information anytime and anywhere, discover problems in time and take measures, and effectively improve the power supply reliability and management efficiency.

[0025] Based on the same inventive concept, the present invention also provides a line load collection method, which comprises:

[0026] The working voltage required for collection is provided by inductively drawing power from the transmission line;

[0027] According to the set acquisition strategy, the current and / or voltage signals of the line are acquired on time and converted into electrical signals for output;

[0028] Receive electrical signals from each line and determine the validity of the data, removing outliers;

[0029] Extract the demand parameters for calculating line load from the effective data and calculate the line load;

[0030] The line current I is converted into the output current I S The formula is: S =K×I,

[0031] Line load average

[0032] K is the sensitivity coefficient of the transformer, Ii is the current value collected for the i-th time, and n is the number of collections.

[0033] As a preferred solution of the line load collection method of the present invention, the collection strategy includes:

[0034] Obtain the peak power consumption period and the low power consumption period of the line;

[0035] During the off-peak period, the excess electric energy obtained by induction power extraction is stored;

[0036] During peak hours of electricity consumption, the stored electric energy is preferentially used to provide the working voltage required for collection.

[0037] As a preferred solution of the line load collection method of the present invention, the collection strategy also includes:

[0038] Timing collection, using the preset collection cycle T during the low power consumption period and the peak power consumption period l With T s Perform regular sampling at equal intervals, and T l >T s ;

[0039] Phased collection: when it is detected that the line load exceeds the set protection threshold, the collection period T of the corresponding time period is l or T s Adaptive reduction is followed by phased high-density collection.

[0040] The beneficial effect of a line load collection method of the present invention is as follows: the present invention can accurately obtain the line current load situation according to actual needs through a timing and phased collection strategy, and provide richer and more accurate data support for line operation analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0042] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0043] Figure 2 This is a schematic diagram of the three-dimensional structure of the information collection unit of the present invention when the opening is the smallest.

[0044] Figure 3 It is a schematic diagram of the three-dimensional structure when the information collection unit of the present invention has its opening at the maximum.

[0045] Figure 4 It is a schematic diagram of the three-dimensional structure from another viewing angle when the information collection unit of the present invention has its opening at its maximum.

[0046] Figure 5 It is a front perspective structural diagram of a data processing unit of the present invention.

[0047] Figure 6 Schematic diagram of the internal structure of the data processing unit of the present invention.

[0048] Figure 7 It is a rear perspective structural schematic diagram of the data processing unit of the present invention. DETAILED DESCRIPTION

[0049] In order to make the objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0050] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0051] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0052] Example 1

[0053] Reference Figure 1-Figure 2 ,as well as Figure 5-Figure 7, is the first embodiment of the present invention, which provides a line load collection device, which can achieve the effect of continuous and stable collection of multiple single line loads respectively, and includes: an information collection unit 100 arranged at the line end and a data processing unit 200 arranged at the ground end. It is worth noting that in this embodiment, the "line end" refers to the end installed on the line cable, or the top of the pole away from the ground; and the "ground end" refers to the end installed on the ground, the ground bracket, etc., or the end of the pole close to the ground. Obviously, the biggest difference between the two is that the "ground end" is close to the ground, which can be conveniently installed and repaired directly; while the "line end" is located at a higher position, and the installation and maintenance are more cumbersome. The information collection unit 100 of the "line end" is only responsible for collecting the load of a single line, while the data processing unit 200 of the "ground end" summarizes the loads of each line and centrally calculates and processes them, which is convenient for adjusting the installation position of the main body 201, making it convenient for daily maintenance and data viewing, and convenient for remote monitoring and control.

[0054] Specifically, the number of information collection units 100 is adapted to the number of lines, and they are independently installed on a single line, including an installation component 102 that is detachably connected to the line, and a collection module 101 and an inductive power collection module 103 that are respectively connected to the installation component 102. The collection module 101 is bound to the corresponding line through the installation component 102.

[0055] The inductive power module 103 obtains power through induction when current passes through the line to provide working voltage for the collection module 101, solving the defects of unstable power supply or dependence on external power supply of some devices, and adopting inductive power supply to ensure continuous and stable operation of the device. The inductive power module 103 is based on the principle of electromagnetic induction and draws power from the transmission line. According to different adoption methods, the existing technology is divided into current induction power supply, coupling capacitor induction power supply, ground wire induction power supply design and high-voltage bus induction power supply device and method.

[0056] In this embodiment, the induction power acquisition module 103 is based on the current induction power acquisition method, and includes an iron core arranged inside, a coil wound on the iron core, and a voltage stabilizing circuit connected between the coil and the acquisition module 101. The iron core is made of high magnetic permeability material, such as silicon steel, etc. The relationship between the magnetic flux Φ in the iron core and the line current I can be expressed as: Φ = L × I, where L is the inductance.

[0057] The coil is wound around the iron core. When current flows through the line, the voltage U induced in the coil can be calculated by: U = N × dΦ / dt. Among them, N is the number of coil turns and dΦ / dt is the rate of change of magnetic flux.

[0058] The voltage stabilizing circuit processes the induced electric energy stably and provides a stable working voltage for the acquisition module 101. The voltage stabilizing circuit is an electronic circuit used to control the load voltage fluctuation in the circuit. Its purpose is to maintain a constant voltage output when the circuit load changes or the external environment changes. There are many voltage stabilizing circuit structures. This embodiment adopts a two-stage voltage stabilizing circuit: the first stage of this structure adopts a hysteresis-controlled Boost circuit (i.e., Boost Chopper, a step-up chopper circuit) for pre-stabilization, outputs a higher voltage to obtain a large output power, and effectively prevents the core from saturating; the second stage adopts a Buck circuit (a step-down circuit) to obtain the required supply voltage. This design can keep the output voltage constant when the high-voltage side current varies within a large range, while increasing the output power of the core, reducing the output voltage ripple and effectively preventing the core from saturating, thereby extending its service life.

[0059] Furthermore, the acquisition module 101 detects the current and / or voltage signals in the circuit and converts them into electrical signals for output. The acquisition module 101 is provided with a communication component to establish communication with the data processing unit 200, and adopts LoRa (LongRange) low-power, long-distance wireless communication technology to ensure that the collected data can be transmitted stably and quickly. The acquisition module 101 also includes a mutual inductor, a signal conditioning circuit and a microcontroller interconnected by a circuit. The mutual inductor is used to detect the current signal in the circuit in real time and output it as an electrical signal. Its output current I S The relationship with the line current I can be expressed as: I S =K×I, where K is the sensitivity coefficient of the transformer. The signal conditioning circuit is used to amplify and filter the signal output by the transformer. The amplification factor A and the filter cutoff frequency f c Parameters such as can be adjusted according to actual needs. The microcontroller controls the acquisition process according to preset time intervals and stages, and performs preliminary processing on the collected data.

[0060] Specifically, the data processing unit 200 establishes a communication connection with the acquisition module 101 on any line, and includes a main body 201 installed on the ground end, and a processing module 202 arranged in the main body 201, and the processing module 202 is used to receive the electrical signal sent by the acquisition module 101 and calculate the line load. The main body 201 is provided with a receiving chip and an antenna matching the communication component of the acquisition module 101 to ensure that the data from the acquisition module 101 can be stably received. The processing module 202 is composed of a high-performance microprocessor and related processing algorithms, which can quickly analyze, calculate and process the received data to extract useful information.

[0061] Furthermore, the data processing unit 200 also includes a storage module 203 and a remote communication module 204 arranged in the main body 201; the storage module 203 is used to store the data processed by the processing module 202, and adopts a large-capacity solid-state hard disk or flash memory to store the processed data for subsequent query and analysis; the remote communication module 204 supports 4G network or a dedicated power communication network, and can upload the processed data to the remote monitoring terminal 300.

[0062] In this embodiment, the main body 201 of the data processing unit 200 is installed on the pole at a height of 2.5 meters from the ground, and the outer shell is made of waterproof, dustproof and anti-electromagnetic interference materials. The main body 201 communicates with the remote communication module 204 through the 4G network, and the staff can view the line load information in real time through the mobile phone APP or computer client. If the receiving sensitivity S is -100dBm and the receiving bandwidth is not less than 1MHz, the data from the acquisition module can be stably received. The use of advanced wireless communication technology improves the speed and stability of data transmission, reduces the risk of data loss and delay, and ensures the timeliness and accuracy of monitoring.

[0063] Working principle: The information acquisition unit 100 is installed on each line through the installation component 102, and the induction power module 103 senses the electric energy from the line to power the acquisition module 101. The mutual inductor in the acquisition module 101 detects the line current in real time, and the microcontroller controls the acquisition process according to the set timing and stage acquisition strategy; after the data processing unit 200 receives the data transmitted by the acquisition module 101, it processes and analyzes it through the processing module 202. The processing module 202 first judges the validity of the data, removes abnormal values, and then calculates the relevant parameters of the line load. The processed data is stored in the storage module 203, and the data is uploaded to the remote monitoring terminal 300 through the remote communication module 204.

[0064] Example 2

[0065] Reference Figure 1-Figure 3 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides an implementation method of the installation component 102, which solves the problem that in multiple groups of information collection units 100, similar lines are likely to interfere with each collection module 101.

[0066] Specifically, the installation component 102 includes a shell 102a connected to the collection module 101, a receiving groove 102b provided on one side of the shell 102a and adapted to the cable, and a blocking member 102c provided on one side of the shell 102a and used to prevent the cable from escaping from the receiving groove 102b. The collection module 101 and the inductive power extraction module 103 are respectively connected to the shell 102a. During installation, the cable is placed in the receiving groove 102b. The shell 102a covers the cable to provide support force. The blocking member 102c is used to prevent the shell 102a from falling off from the cable. One implementation method of the blocking member 102c is that it can be combined with the shell 102a to completely cover the cable, thereby ensuring that the cable is always located in the receiving groove 102b and does not fall off.

[0067] Furthermore, an opening is provided on one side of the receiving groove 102b that is connected to the outside of the housing 102a. The cable can easily enter and exit the receiving groove 102b through the opening. The size of the opening is adjustable. Another embodiment of the blocking member 102c is used to limit and keep the size of the opening smaller than the size of the cable diameter. The adjustable opening facilitates the adaptation of cables of different diameters. After the cable enters the receiving groove 102b through the opening, the size of the opening is reduced so that the cable cannot be moved out of the opening. Then, the size of the opening is fixed by the blocking member 102c to maintain a stable connection between the information acquisition unit 100 and the cable.

[0068] In this embodiment, the mutual inductor of the acquisition module 101 is arranged inside the shell 102a and covers the cable, which has the function of isolating the input and providing safety protection for other parts of the information acquisition unit 100. The rest of the acquisition module 101 is arranged on the side of the shell 102a close to the accommodating groove 102b, which is closer to the corresponding cable, and the isolation effect of the mutual inductor in the outer shell 102a can block the influence of other lines and ensure the accurate acquisition of the acquisition module 101; the induction power supply module 103 is arranged on the outside of the shell 102a and is arranged parallel to the line, which can increase the induction power supply interval, increase the electric energy obtained by induction, and ensure the stable operation of the acquisition module 101.

[0069] The rest of the structure is the same as that of Example 1.

[0070] Example 3

[0071] Reference Figure 1-Figure 4 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a preferred implementation of the installation component 102, which can be adapted to cables of different diameters for fastening and installation.

[0072] Specifically, the housing 102a includes a housing 1 102a-1 and a housing 2 102a-2 that are hinged to each other, and the opening of the receiving groove 102b is formed between the housing 1 102a-1 and the housing 2 102a-2. The opening of the receiving groove 102b is adjusted by relative rotation between the housing 1 102a-1 and the housing 2 102a-2. In this embodiment, the housing 1 102a-1 and the housing 2 102a-2 are set to have a semi-cylindrical shape with the same diameter, and the minimum opening between the housing 1 102a-1 and the housing 2 102a-2 is 0. At this time, the semi-cylindrical housing 1 102a-1 and the housing 2 102a-2 are combined to form a complete cylindrical shape, and the receiving groove 102b is set to be a cylindrical shape coaxial with the housing 1 102a-1 and the housing 2 102a-2, and the diameter of the receiving groove 102b should be adapted to most cable diameters.

[0073] Furthermore, the blocking member 102c includes an elastic protrusion 102c-1 disposed on one side of the housing 1 102a-1, and a card slot 102c-2 disposed on one side of the housing 2 102a-2 and adapted to the elastic protrusion 102c-1. When the housing 1 102a-1 and the housing 2 102a-2 are relatively rotated until the opening size is smaller than the cable diameter size, the elastic protrusion 102c-1 and the card slot 102c-2 are engaged and the opening size is fixed. Obviously, the positions of the housing 1 102a-1 and the housing 2 102a-2 are relative, and the elastic protrusion 102c-1 can also be disposed on one side of the housing 2 102a-2, and the corresponding card slot 102c-2 can be disposed on one side of the housing 1 102a-1. In this embodiment, the acquisition module 101 is symmetrically disposed on the inner sides of the housing 1 102a-1 and the housing 2 102a-2, and protrudes from the accommodating groove 102b. In this way, for cables with smaller diameters, after the shell 1 102a-1 and the shell 2 102a-2 are rotated to an opening of 0 and combined to form a complete cylindrical shape, the acquisition module 101 can compress the cable. The elastic protrusion 102c-1 can be an elastic metal sheet, and the card slot 102c-2 can be set as a lock structure. The elastic metal sheet can adapt to lines of different diameters and provide sufficient clamping force. The lock ensures that the transformer is firmly installed on the line. The clamping force F of the elastic metal sheet can be calculated by the following formula: F = K × ΔX, where is the elastic coefficient and X is the deformation of the elastic metal sheet. According to the compressive strength of the cable, an appropriate elastic metal sheet is selected to prevent the cable from being damaged or unable to be used normally due to excessive pressure. The design of the snap-on transformer does not require too many complicated operations and power outages, which greatly shortens the installation time, improves the installation efficiency, and reduces interference with normal power supply.

[0074] The remaining structures are the same as those in Example 2.

[0075] When in use, first disengage the elastic protrusion 102c-1 and the card slot 102c-2, then rotate the shell 1 102a-1 and the shell 2 102a-2 to increase the opening until the cable can pass through the opening and enter the accommodating groove 102b, then rotate the shell 1 102a-1 and the shell 2 102a-2 again so that the opening reaches the minimum value for adapting the cable, and then snap-fit ​​and fix the elastic protrusion 102c-1 and the card slot 102c-2 to complete the installation.

[0076] Example 4

[0077] Reference Figure 1-Figure 7 , which is the fourth embodiment of the present invention. Different from the previous embodiment, this embodiment provides a line load collection method, which can realize flexible timing and staged collection, and includes: providing the working voltage required for collection by inductively taking power from the transmission line; obtaining the current and / or voltage signal of the line on time according to the set collection strategy and converting it into an electrical signal and then outputting it; receiving the electrical signal of each line and judging the validity of the data, and removing abnormal values; extracting the demand parameters for calculating the line load from the valid data, and calculating the line load; wherein the line current I is converted into the output current I S The formula is: S =K×I, average line load value K is the sensitivity coefficient of the transformer, I i is the current value collected for the ith time, and n is the number of collections. The average line load value is the average value of the load collected over a period of time, which can reflect the average load level over a period of time. In the same period of time, the more collection times, the more accurate the calculated average change trend.

[0078] Specifically, the collection strategy includes: obtaining the peak power consumption period and the low power consumption period of the line; storing the excess electric energy obtained by inductive power collection during the low power consumption period; and giving priority to using the stored electric energy by inductive power collection to provide the working voltage required for collection during the peak power consumption period. By storing electric energy during the low power consumption period, it is possible to consume less or no electric energy in the line during the peak power consumption period, reduce the pressure of power consumption, and ensure continuous and stable power supply. Inductive power collection technology can continuously and stably provide electric energy to the device, and is not affected by external power failures, ensuring uninterrupted collection work. The timing and phased collection strategy can accurately obtain the line current load according to actual needs, and provide richer and more accurate data support for line operation analysis.

[0079] Furthermore, the collection strategy also includes timed collection and phased collection. Timed collection is to use preset collection cycles Tl and Ts to perform regular collection at equal intervals during the low power consumption period and the peak power consumption period, and Tl>Ts; for example, the timed collection interval Tl is set to once every 15 minutes, and the phased collection is set to collect once every 5 minutes during the peak power consumption period (such as 18:00-21:00 every day), that is, the collection interval is 5 minutes. After the collected data is amplified and filtered by the signal conditioning circuit, it is preliminarily processed by the microcontroller and the collected data is sent out through the communication module.

[0080] Among them, the phased collection is when it is detected that the line load exceeds the set protection threshold, the collection period Tl or Ts of the corresponding time period is adaptively reduced and then the phased high-density collection is performed, that is, the number of collections is increased within a period of time. In this embodiment, the preset timed collection interval Tl for the low power consumption is once every 15 minutes, and the timed collection interval Ts for the peak power consumption is set to collect once every 5 minutes during the peak power consumption period (such as 18:00-21:00 every day), that is, the collection interval is 5 minutes. After the collected data is processed, it is immediately transmitted through the communication module. Assuming that the sensitivity coefficient of the sensor is 0.1, when the line current is 100A, the sensor output current is 10A. If the current threshold is set to 5-15A under normal circumstances, when the current is detected to exceed the threshold range, it means that the line is abnormal and the load risk is relatively high. At this time, the collection strategy is to automatically reduce the collection interval, such as changing it to 3 minutes or 2 minutes. The specific interval size is determined by the difference between the detection value and the threshold range. The larger the difference, the shorter the interval should be set. The shorter the collection interval, the more accurate the collection of line load changes during this period, and the easier it is to capture the change trend. When the threshold range is exceeded, an early warning can also be issued to the remote client, so that the remote client can view it in time, which is convenient for the staff to remotely view the line load information anytime and anywhere, find problems in time and take measures, effectively improving the power supply reliability and management efficiency.

[0081] The rest of the structure is the same as that of Example 1.

[0082] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to several modifications still falling within the scope of the appended claims.

[0083] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0084] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0085] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A line load collection device, characterized in that: include, An information collection unit (100) arranged on a single line comprises a mounting component (102) detachably connected to the line, and a collection module (101) and an inductive power acquisition module (103) respectively connected to the mounting component (102); the inductive power acquisition module (103) obtains power by induction when current passes through the line to provide a working voltage for the collection module (101); the collection module (101) detects current and / or voltage signals in the line and converts them into electrical signals for output; as well as, A data processing unit (200) is provided, wherein the data processing unit (200) establishes a communication connection with a collection module (101) on any line, and comprises a main body (201) installed on a ground end, and a processing module (202) arranged in the main body (201), wherein the processing module (202) is used to receive an electrical signal sent by the collection module (101) and calculate a line load.

2. The line load collection device according to claim 1, characterized in that: The inductive power collection module (103) comprises an iron core arranged inside, a coil wound around the iron core, and a voltage stabilizing circuit connected between the coil and the collection module (101); The voltage stabilizing circuit processes the electric energy obtained by induction in a stable manner, and provides a stable operating voltage for the acquisition module (101).

3. The line load collection device according to claim 1, characterized in that: The acquisition module (101) comprises a mutual inductor, a signal conditioning circuit and a microcontroller which are interconnected via a circuit; The mutual inductor is used to detect the current signal in the circuit in real time and output it as an electrical signal. The signal conditioning circuit is used to amplify and filter the signal output by the mutual inductor. The microcontroller is used to detect the current signal in the line according to a preset acquisition strategy.

4. The line load collection device according to any one of claims 1 to 3, characterized in that: The data processing unit (200) further comprises a storage module (203) and a remote communication module (204) arranged in the main body (201); The storage module (203) is used to store data processed by the processing module (202); The remote communication module (204) is used to upload the processed data to the remote monitoring terminal (300).

5. The line load acquisition device according to claim 1, characterized in that: The installation component (102) comprises a shell (102a) connected to the acquisition module (101), a receiving groove (102b) provided on one side of the shell (102a) and adapted to the cable, and a blocking member (102c) provided on one side of the shell (102a) and used to prevent the cable from escaping from the receiving groove (102b).

6. The line load acquisition device according to claim 5, characterized in that: An opening communicating with the outside of the housing (102a) is provided on one side of the accommodating groove (102b), and the cable enters and exits the accommodating groove (102b) through the opening; The size of the opening is adjustable, and the blocking member (102c) is used to limit and keep the size of the opening smaller than the diameter of the cable.

7. The line load collection device according to claim 6, characterized in that: The housing (102a) comprises a housing 1 (102a-1) and a housing 2 (102a-2) which are hinged to each other, and the opening of the receiving groove (102b) is formed between the housing 1 (102a-1) and the housing 2 (102a-2); The blocking member (102c) comprises an elastic protrusion (102c-1) arranged on one side of the shell one (102a-1), and a slot (102c-2) arranged on one side of the shell two (102a-2) and adapted to the elastic protrusion (102c-1); when the shell one (102a-1) and the shell two (102a-2) are relatively rotated until the opening size is smaller than the cable diameter size, the elastic protrusion (102c-1) and the slot (102c-2) are engaged with each other to fix the opening size.

8. A line load collection method, characterized in that: include, The working voltage required for collection is provided by inductively drawing power from the transmission line; According to the set acquisition strategy, the current and / or voltage signals of the line are acquired on time and converted into electrical signals for output; Receive electrical signals from each line and determine the validity of the data, removing outliers; Extract the demand parameters for calculating line load from the effective data and calculate the line load; The line current I is converted into the output current I S The formula is: S =K×I, Line load average K is the sensitivity coefficient of the transformer, I i is the current value collected for the i-th time, and n is the number of collections.

9. The line load collection method according to claim 8, characterized in that: The acquisition strategy includes: Obtain the peak power consumption period and the low power consumption period of the line; During the off-peak period, the excess electric energy obtained by induction power extraction is stored; During peak hours of electricity consumption, the stored electric energy is preferentially used to provide the working voltage required for collection.

10. The line load collection method according to claim 9, characterized in that: The acquisition strategy also includes: Timing collection, using the preset collection cycle T during the low power consumption period and the peak power consumption period l With T s Perform regular sampling at equal intervals, and T l >T s ; Phased collection: when it is detected that the line load exceeds the set protection threshold, the collection period T of the corresponding time period is l or T s Adaptive reduction is followed by phased high-density collection.

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