A low voltage intelligent integrated distribution box with surge protection device

Abstract

The present application relates to the field of distribution boxes, and in particular to a low-voltage intelligent integrated distribution box with a surge protection device, which includes a box body, the box body is used to place and install electrical equipment and electrical lines, the box body is also provided with a surge protector, the surge protector is electrically connected to the electrical line, the box body is also provided with a detection module and a data processing module, the detection module is used to detect the voltage and current of the electrical line to obtain detection data, the data processing module receives the detection data, calculates a surge alarm signal and outputs it to the user. The present application has the effect of improving the operation stability.

Description

Technical Field

[0001] The present application relates to the field of power distribution boxes, and in particular to a low-voltage intelligent integrated power distribution box with a surge protection device. Background Art

[0002] Power distribution boxes are widely used in various fields in the market and are an indispensable part of the power system. 0.4kV distribution boxes are low-voltage distribution boxes, which are responsible for distributing electricity from substations to various end users such as residences, commercial buildings, and industrial facilities. Distribution boxes ensure the safe, stable and efficient transmission of electric energy, and provide overload and short-circuit protection, as well as control the disconnection and connection of power lines.

[0003] When abnormal current occurs in the 0.4kV distribution box, the operation of the entire equipment will become unstable, thus affecting power distribution. Summary of the invention

[0004] In order to improve the problem, the present application provides a low-voltage intelligent integrated distribution box with a surge protection device.

[0005] The present application provides a low-voltage intelligent integrated distribution box with a surge protection device, which adopts the following technical solution:

[0006] A low-voltage intelligent integrated distribution box with a surge protection device comprises a box body, wherein the box body is used for placing and installing electrical equipment and electrical lines, wherein a surge protector is also arranged in the box body, wherein the surge protector is electrically connected to the electrical lines, wherein a detection module and a data processing module are also arranged in the box body, wherein the detection module is used for detecting the voltage and current of the electrical lines to obtain detection data, and wherein the data processing module receives the detection data, calculates a surge alarm signal and outputs the signal to a user.

[0007] By adopting the above technical solution, surge protection is performed through a surge protector to improve stability, and then the detection module and the data processing module automatically detect and judge the operation status of the surge protector, and output the surge status to the user in a timely and automatic manner to facilitate the user to check or repair.

[0008] Optionally, it includes a signal transmission module and a display module, wherein the signal transmission module is used to receive the surge alarm signal and output it to the user, and the display module is used to receive the surge alarm signal and display the received surge alarm signal for the user to view.

[0009] By adopting the above technical solution, users can check the surge situation more intuitively.

[0010] Optional, including:

[0011] Obtain surge derived voltage data and output voltage data;

[0012] Determine a surge trigger signal through the surge derived voltage data and a preset surge trigger threshold;

[0013] A surge alarm signal is determined and outputted according to the surge trigger signal, the output voltage data, and a preset output voltage threshold.

[0014] By adopting the above technical solution, the user can be automatically reminded when a surge occurs, which is convenient and quick.

[0015] Optional, including:

[0016] Get timing data;

[0017] Determine surge detection time data through the timing data, the output voltage data, and a preset surge output threshold value;

[0018] Determine surge trigger time data by using the surge detection time data, the timing data, the output voltage data, and the output voltage threshold;

[0019] Determine surge response time data by using the surge trigger time data, the output voltage data, and the output voltage threshold;

[0020] Determine a surge response fault signal through the surge response time data and a preset surge response threshold;

[0021] The surge alarm signal is determined and outputted according to the surge response failure signal.

[0022] By adopting the above technical solution, it is automatically determined whether the surge protector is faulty, and the cause of the fault of the faulty surge protector is determined to be whether the response time is too long, thereby affecting the performance of surge discharge. The cause of the fault is automatically determined so that the user can repair or replace the surge protector, for example, replace the surge protector with a shorter response time to adapt to the distribution box.

[0023] This application provides a protection method, which adopts the following technical solution:

[0024] A protection method comprising:

[0025] Forming a surge operating voltage log through the surge derived voltage data and the timing data;

[0026] Determine the fault point data through the output voltage data, the preset fault voltage threshold, and the surge working voltage log;

[0027] Determine maximum continuous operating voltage data through the fault point data, the surge operating voltage log, and a preset duration threshold;

[0028] Determine a maximum continuous fault signal by using the maximum continuous operating voltage data, the fault point data, and a preset maximum operating voltage threshold;

[0029] A surge alarm signal is determined by the maximum continuous fault signal and outputted.

[0030] By adopting the above technical solution, it is automatically determined whether the surge protector is faulty, and the cause of the fault of the faulty surge protector is determined to be whether the maximum continuous working voltage fails, thereby affecting the performance of surge discharge. The cause of the fault is automatically determined so that the user can repair or replace the surge protector, for example, replace the surge protector with a larger maximum continuous working voltage to adapt to the distribution box.

[0031] Optional, including:

[0032] Determine transient calculation time data through the maximum continuous working voltage data and the surge working voltage log;

[0033] Determine transient overvoltage data through the transient calculation time data, the surge operating voltage log, the maximum continuous operating voltage data, and a preset surge operating voltage threshold;

[0034] Determining a transient overvoltage signal through the transient overvoltage data and a preset transient overvoltage threshold;

[0035] Determining a transient overvoltage damage fault signal through the transient overvoltage signal, the fault point data, and a preset damage impact threshold;

[0036] Determine actual transient overvoltage data through the transient overvoltage damage fault signal and the transient overvoltage signal;

[0037] The surge alarm signal is determined and outputted according to the transient overvoltage damage fault signal and the actual transient overvoltage data.

[0038] By adopting the above technical solution, it is automatically determined whether the surge protector is faulty, and the cause of the fault of the faulty surge protector is determined, whether it is a failure in transient overvoltage tolerance, thereby affecting the performance of surge discharge. The cause of the fault is automatically determined, so that the user can repair or replace the surge protector, such as replacing a surge protector with a stronger transient overvoltage tolerance to adapt to the distribution box; at the same time, the situation where the damage was caused by receiving a large voltage before and then the fault occurred when passing a lower voltage is eliminated, and the judgment is more accurate.

[0039] Optional, including:

[0040] Obtain surge export current data;

[0041] determining a surge current log using the surge derived current data and the timing data;

[0042] Determine the damage current data through the surge derived current data, the preset maximum current threshold, the surge alarm signal, the output voltage data, and the fault voltage threshold;

[0043] Determine a plurality of large current data by using the damage current data and the surge current log;

[0044] Determine the nominal discharge current data and the maximum allowable discharge current data through the plurality of the large current data, the damage current data, and the preset specified current time threshold;

[0045] The surge alarm signal is determined and outputted according to the nominal discharge current data and the maximum allowable discharge current data.

[0046] By adopting the above technical solution, it is automatically determined whether the surge protector is faulty, and the cause of the fault of the faulty surge protector is determined to be whether the current capacity is faulty, thereby affecting the performance of surge discharge. The cause of the fault is automatically determined so that users can repair or replace the surge protector, such as replacing a surge protector with a stronger current capacity to adapt to the distribution box. The current capacity includes the maximum discharge current and the nominal discharge current. The maximum discharge current is the single maximum surge current that the surge protector can withstand, that is, the maximum allowable discharge current data. The nominal discharge current is the specified current value that the surge protector can withstand repeatedly for a long time, that is, the nominal discharge current data.

[0047] The present application provides a computer-readable storage medium, which adopts the following technical solution:

[0048] A computer-readable storage medium stores a computer program that can be loaded by a processor and execute a protection method.

[0049] By adopting the above technical solution, the computer program is stored in a computer-readable storage medium.

[0050] In summary, the present application includes at least one of the following beneficial technical effects:

[0051] 1. Improve circuit stability and automatically output surge conditions to users in a timely manner to facilitate user inspection or maintenance.

[0052] 2. Automatically determine the cause of surge protector failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a schematic diagram of the overall structure of a low-voltage intelligent integrated distribution box with a surge protection device in an embodiment of the present application.

[0054] Figure 2 It is a schematic diagram highlighting the structure of the surge protector.

[0055] Figure 3 It is a module schematic diagram of a low-voltage intelligent integrated distribution box with a surge protection device in an embodiment of the present application.

[0056] Figure 4 It is a flowchart diagram of step S1 to step S12.

[0057] Figure 5 It is a flowchart diagram of step S2 to step S25.

[0058] Figure 6 It is a flowchart diagram of step S3 to step S34.

[0059] Figure 7 It is a flowchart diagram of step S4 to step S45.

[0060] Figure 8 It is a flowchart diagram of step S5 to step S55.

[0061] Explanation of the accompanying drawings: 1. Box body; 2. Surge protector; 3. Detection module; 4. Data processing module; 5. Signal transmission module; 6. Display module. DETAILED DESCRIPTION

[0062] The following is combined with Figure 1-8 This application is described in further detail.

[0063] The present application embodiment discloses a low-voltage intelligent integrated distribution box with a surge protection device. Figure 1 and Figure 2 and Figure 3 The low-voltage intelligent integrated distribution box with a surge protection device includes a box body 1, which is used to place and install electrical equipment and electrical lines. A surge protector 2 is also installed in the box body 1, and the surge protector 2 is electrically connected to the electrical line. A plurality of detection modules 3 and a data processing module 4 are also installed in the box body 1. The detection module 3 can use a voltmeter, an ammeter, an electric energy meter or other equipment or chips with voltage and current detection functions. The detection module 3 is used to detect the voltage and current at both ends of the electrical line and the surge protector 2 to obtain detection data. The data processing module 4 receives the detection data, calculates the surge alarm signal and outputs it to the user.

[0064] Reference Figure 3The data processing module 4 includes a processor and a database. The database is used to store various threshold data, such as surge trigger threshold, output voltage threshold, surge output threshold, surge response threshold, duration threshold, surge working voltage threshold, transient overvoltage threshold, damage impact threshold, maximum current threshold, etc. The processor is used to receive detection data, and then call the corresponding threshold data from the database for calculation, obtain the corresponding surge alarm signal and output it.

[0065] The processor may include a central processing unit such as a CPU or MPU or a host system built around a CPU or MPU, including hardware or software. After the meter has a processor, people can freely control the metering instrument through programming to make it run according to people's wishes. The processor can control local measurement transmission, remote measurement transmission, remote communication, etc. through internal protocols. Internal protocols refer to all protocols that achieve mutual communication or links within the same metering instrument or the same system, including: human-computer interaction protocols, software / hardware (interface) protocols, chip bus (C-Bus) protocols, internal bus (I-Bus) protocols, etc. Part or all of the protocols. With the development of integrated circuit technology, some protocols that belong to the external bus (E-Bus) protocol are also classified as internal protocols after the external bus (E-Bus) is integrated into the chip.

[0066] Reference Figure 2 and Figure 3 , including a signal transmission module 5 and a display module 6. The signal transmission module 5 can be wired transmission or wireless transmission. The signal transmission module 5 is used to receive the surge alarm signal, and then output the surge alarm signal to the user, such as wirelessly outputting it to a designated terminal device. The terminal device, such as a mobile phone, a computer, a console, etc., can also be transmitted by wire, such as outputting it to a designated device through a wire. The display module 6 can use a display screen. The surge alarm signal is transmitted to the display module 6 by wire or wireless transmission. The display module 6 is used to display the received surge alarm signal for the user to view. The display module 6 is usually installed on the outer wall of the box body 1. The user can view it through the display module 6 on the box body 1, which is convenient for viewing during maintenance. It can also be viewed remotely through terminal devices such as mobile phones and computers.

[0067] There are various types and structures of wireless transmission, such as WiFi modules, 3G modules, 4G modules, 5G modules, etc., which use the resources of the linked network to form a network and provide remote communication or remote control functions.

[0068] Reference Figure 4 , further comprising the following steps:

[0069] S1. Obtain surge derived voltage data and output voltage data;

[0070] S11, determining a surge trigger signal through surge-derived voltage data and a preset surge trigger threshold;

[0071] S12, determining a surge alarm signal through the surge trigger signal, the output voltage data, and a preset output voltage threshold, and outputting the signal.

[0072] In detail: the surge derived voltage data is the voltage value at the output end of the surge protector 2, and the output voltage data is the voltage value on the electrical circuit, that is, when the output voltage data is affected by the surge, the surge derived voltage data increases to derive the excess voltage to ensure that the output voltage data is within a stable and safe range, and this range is the output voltage threshold; when the surge derived voltage data exceeds the surge trigger threshold, it means that the surge protector 2 triggers the surge protection. Assuming the surge trigger threshold is 1V, if the surge derived voltage data is 300V, 300>1, it means that the surge protector 2 is turned on to lead out the voltage. When the surge protector 2 is not turned on, there is almost no voltage at the output end of the surge protector 2. Assuming the output voltage threshold is [200V, 230V], when it is determined that the surge protector 2 is turned on, if the output voltage data is 250V, 250>230, it means that the output voltage may be affected by the surge, so the corresponding surge alarm signal is output to the user for reminder.

[0073] Reference Figure 5 , further comprising the following steps:

[0074] S2, obtaining timing data;

[0075] S21, determining surge detection time data through timing data, output voltage data, and a preset surge output threshold;

[0076] S22, determining surge trigger time data through surge detection time data, timing data, output voltage data, and output voltage threshold;

[0077] S23, determining surge response time data through surge trigger time data, output voltage data, and output voltage threshold;

[0078] S24, determining a surge response fault signal through surge response time data and a preset surge response threshold;

[0079] S25. Determine and output a surge alarm signal based on the surge response fault signal.

[0080] In detail: The surge output threshold is the value that determines the impact of the surge. Suppose the surge output threshold is 240V. If the timing data is 2min0s, the output voltage data is 228V. If the timing data is 2min1s, the output voltage data is 232V. If the timing data is 2min2s, the output voltage data is 238V. If the timing data is 2min3s, the output voltage data is 241V. 241>240>238, so the surge detection time data is 2min3s. Suppose the output voltage threshold is [200V, 230V]. At this time, 232>230>228>200, so the surge trigger time data is 2min1s. At this time, it is determined that a surge has occurred at 241V in 2min3s, and then it is reversed to 2min1s to indicate the time when the surge just began to occur. If it does not exceed 240V at the beginning, it will not be determined that a surge has occurred, it may just be a fluctuation, and the time will not be calculated backwards; if the timing data is 2min4s, the output voltage data is 232V, if the timing data is 2min5s, the output voltage data is 225V, 232>230>225>200, so the voltage returns to normal in 2min5s, and the surge response time data is 2min5s-2min1s=4s, which means that it returns to normal 4s after the surge occurs. This is just an example for easy understanding. In reality, the response time may be 0.4s, 4ms, etc.; assuming that the surge response threshold is 2s, and 4>2, it means that the response time is too long and the surge protector 2 fails, then a surge alarm signal indicating that the surge protector 2 fails in the surge response time is output to the user.

[0081] The present application embodiment discloses a protection method. Figure 6 , the protection method further comprises the following steps:

[0082] S3, forming a surge working voltage log by exporting voltage data and timing data through surge;

[0083] S31, determining fault point data through output voltage data, fault voltage threshold, and surge working voltage log;

[0084] S32, determining maximum continuous working voltage data through fault point data, surge working voltage log, and preset duration threshold;

[0085] S33, determining a maximum continuous fault signal through the maximum continuous working voltage data, the fault point data, and a preset maximum working voltage threshold;

[0086] S34. Determine a surge alarm signal through the maximum continuous fault signal and output it.

[0087] In detail: The surge working voltage log is a database formed by storing in the form of (timing data, surge derived voltage data), that is, if the timing data is 2min4s and the surge derived voltage data is 1V, it is stored in the format of (2min4s, 1); the fault voltage threshold is greater than the surge output threshold, indicating that the surge protector 2 is clearly faulty. When the output voltage data exceeds the fault voltage threshold, it means that the surge protector 2 is faulty at this time, so the corresponding data is pulled from the surge working voltage log as the fault point data, and then the maximum continuous working voltage data is obtained by reverse calculation based on the timing data in the fault point data. For example, if the fault voltage threshold is 260 and the fault point data is (3min10s, 265), the timing data is reversed from 3min10s to read the corresponding data in the surge working voltage log. If the data in the surge working voltage log is (3min9s, 2 41), (3min8s, 242), (3min7s, 241), (3min6s, 242), (3min6s, 220), assuming that the duration threshold is 3s, and surge protector 2 works at a voltage of 241-242V for 4s, 4>3, and 241>230, that is, after sharing the working time of the surge exceeding the normal working voltage, it achieves the maximum voltage that can be sustained for a long time under normal working conditions, which is the maximum continuous working voltage data, which is 242V. Assuming the maximum working voltage threshold is 245, at this time 260>245>242, the maximum continuous working voltage of surge protector 2 is normal. If the maximum working voltage threshold is set to 270, at this time 270>260>242, it means that the maximum continuous working voltage of surge protector 2 is faulty. At this time, the manufacturer may have falsely marked the data, or this surge protector 2 is a defective product.

[0088] Reference Figure 7 , further comprising the following steps:

[0089] S4. Determine transient calculation time data through maximum continuous working voltage data and surge working voltage log;

[0090] S41, determining transient overvoltage data through transient calculation time data, surge working voltage log, maximum continuous working voltage data, and a preset surge working voltage threshold;

[0091] S42, determining a transient overvoltage signal through transient overvoltage data and a preset transient overvoltage threshold;

[0092] S43, determining a transient overvoltage damage fault signal through the transient overvoltage signal, the fault point data, and a preset damage impact threshold;

[0093] S44, determining actual transient overvoltage data through the transient overvoltage damage fault signal and the transient overvoltage signal;

[0094] S45, determining a surge alarm signal based on the transient overvoltage damage fault signal and the actual transient overvoltage data and outputting the signal.

[0095] Detailed: First, remove the timing data corresponding to the maximum continuous working voltage data in the surge working voltage log to obtain the transient calculation time data. For example, the surge working voltage log records the timing data from 0min0s to 4min0s, and the maximum continuous working voltage data is the timing data from 3min0s to 4min0s, then the transient calculation time data is the timing data between 0min0s and 3min0s, and then compare the voltage corresponding to the timing data in this interval with the maximum continuous working voltage data, and export the surge derived voltage data that is greater than the maximum continuous working voltage data and the surge working voltage threshold as transient overvoltage data. For example, assuming the surge working voltage threshold is 270V and the maximum continuous working voltage data is 242V, if the timing data is a surge between 0min0s and 3min0s. The derived voltage data is 240V, 250V, 260V, 271V, and 280V, then the transient overvoltage data obtained are 271V and 280V and their corresponding timing data. Assuming the transient overvoltage threshold is 275V, the transient overvoltage signal is 280V. If the fault point data is 272V, then 280>272>271, and the timing data is that the time corresponding to 280V is later than the time corresponding to 271V, and finally a fault occurs at 272V. This means that a fault has occurred at 280V due to excessive voltage, and no fault occurs at 272V, so the transient overvoltage damage fault signal is 280V, and the actual transient overvoltage data is 271V. After combining them, a surge alarm signal is formed and output to the user, so that the user can observe the actual performance of this surge protector 2 for replacement and maintenance.

[0096] Reference Figure 8 , further comprising the following steps:

[0097] S5, obtaining surge derived current data;

[0098] S51, determining a surge current log through surge-derived current data and timing data;

[0099] S52, determining damage current data through surge derived current data, a preset maximum current threshold, a surge alarm signal, output voltage data, and a fault voltage threshold;

[0100] S53, determining a plurality of large current data through the damage current data and the surge current log;

[0101] S54, determining the nominal discharge current data and the maximum allowable discharge current data through a plurality of large current data, damage current data, and a specified current time threshold;

[0102] S55. Determine and output a surge alarm signal based on the nominal discharge current data and the maximum allowable discharge current data.

[0103] In detail: The surge derived current data is the current value derived from the surge protector 2. The surge current log is formed by the detected surge derived current data and the corresponding timing data. The maximum current threshold is 10A. If the surge derived current data is 13A and the surge alarm signal has been triggered by the output voltage data, it means that a surge has occurred at this time. If the output voltage data is greater than the fault voltage threshold at this time, it means that the surge protector 2 is damaged, that is, the damaged current data is 13A and the corresponding timing data is recorded at this time. Then, reverse the process from the surge current log, that is, read the surge derived current data from the past time starting from the timing data corresponding to 13A, and derive all the surge derived current data greater than 10A as large current data and record the corresponding timing data. If the continuous timing data is greater than the specified current time threshold, it is used as the nominal discharge current data, and the large current data second only to 13A is used as the maximum allowable discharge current data, and a surge alarm signal is formed and output.

[0104] The embodiment of the present application discloses a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program that can be loaded by a processor and execute a protection method.

[0105] Computer-readable storage media include, for example, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0106] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A low-voltage intelligent integrated distribution box with a surge protection device, characterized in that: The invention comprises a box (1), wherein the box (1) is used for placing and installing electrical equipment and electrical circuits therein, wherein a surge protector (2) is also arranged in the box (1), wherein the surge protector (2) is electrically connected to the electrical circuit, wherein a detection module (3) and a data processing module (4) are also arranged in the box (1), wherein the detection module (3) is used for detecting the voltage and current of the electrical circuit to obtain detection data, and wherein the data processing module (4) receives the detection data, calculates a surge alarm signal, and outputs the signal to a user; It comprises a signal transmission module (5) and a display module (6), wherein the signal transmission module (5) is used to receive the surge alarm signal and output it to a user, and the display module (6) is used to receive the surge alarm signal and display the received surge alarm signal for the user to view; include: Obtain surge derived voltage data and output voltage data; Determine a surge trigger signal through the surge derived voltage data and a preset surge trigger threshold; Determine and output a surge alarm signal through the surge trigger signal, the output voltage data, and a preset output voltage threshold; Also includes: Get timing data; Determine surge detection time data through the timing data, the output voltage data, and a preset surge output threshold value; Determine surge trigger time data by using the surge detection time data, the timing data, the output voltage data, and the output voltage threshold; Determine surge response time data by using the surge trigger time data, the output voltage data, and the output voltage threshold; Determine a surge response fault signal through the surge response time data and a preset surge response threshold; The surge alarm signal is determined and outputted according to the surge response failure signal.

2. A protection method, using a low-voltage intelligent integrated distribution box with a surge protection device as claimed in claim 1, characterized in that: include: Forming a surge operating voltage log through the surge derived voltage data and the timing data; Determine the fault point data through the output voltage data, the preset fault voltage threshold, and the surge working voltage log; Determine maximum continuous operating voltage data through the fault point data, the surge operating voltage log, and a preset duration threshold; Determine a maximum continuous fault signal by using the maximum continuous operating voltage data, the fault point data, and a preset maximum operating voltage threshold; Determine and output a surge alarm signal based on the maximum continuous fault signal; Determine transient calculation time data through the maximum continuous working voltage data and the surge working voltage log; Determine transient overvoltage data through the transient calculation time data, the surge operating voltage log, the maximum continuous operating voltage data, and a preset surge operating voltage threshold; Determining a transient overvoltage signal through the transient overvoltage data and a preset transient overvoltage threshold; Determining a transient overvoltage damage fault signal through the transient overvoltage signal, the fault point data, and a preset damage impact threshold; Determine actual transient overvoltage data through the transient overvoltage damage fault signal and the transient overvoltage signal; Determine the surge alarm signal through the transient overvoltage damage fault signal and the actual transient overvoltage data and output it; Obtain surge export current data; determining a surge current log using the surge derived current data and the timing data; Determine the damage current data through the surge derived current data, the preset maximum current threshold, the surge alarm signal, the output voltage data, and the fault voltage threshold; Determine a plurality of large current data by using the damage current data and the surge current log; Determine the nominal discharge current data and the maximum allowable discharge current data through the plurality of the large current data, the damage current data, and the preset specified current time threshold; The surge alarm signal is determined and outputted according to the nominal discharge current data and the maximum allowable discharge current data.

3. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and executes a protection method as claimed in claim 2.

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