Safe electricity utilization monitoring system and method based on non-intrusive load identification technology

Abstract

The invention relates to a safe electricity utilization monitoring system based on a non-intrusive load identification technology. A non-intrusive load identification monitoring terminal is used for monitoring a total incoming line voltage, a current and a harmonic wave in real time; the safe power utilization cloud platform is used for acquiring the voltage, the current and the harmonic waves acquired by the non-intrusive load identification monitoring terminal, decomposing and analyzing the power utilization load, and judging whether each air switch outgoing line has a high-power malignant load and / or a harmonic wave malignant load; and the user side is used for receiving the safe electricity utilization reminding sent by the safe electricity utilization cloud platform. The beneficial effects are that the non-intrusive load monitoring terminal, the safe power utilization platform and the user terminal are installed, the total power utilization parameters of users are collected in real time, the non-intrusive load identification technology is adopted, high-power malignant loads and harmonic malignant loads are identified, the users are guided to avoid use, the potential safety hazard of power utilization is radically eliminated, and the safety of the users is improved. The safe electricity utilization requirement of'safety first and prevention first 'is really met, and the electricity utilization happiness of the user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safe power utilization, in particular to a safe power utilization monitoring system and method based on non-intrusive load identification technology. BACKGROUND

[0002] With the rapid development and progress of China's economy and society, the development of intelligent buildings is also changing rapidly. The widespread application of nonlinear power electronic devices has brought convenience to users, but also a large amount of harmonics to the power grid, seriously affecting the safety of power utilization. A large number of nonlinear loads such as LED lighting, variable frequency air conditioners, microwave ovens, and computers have been connected, resulting in a significant increase in the third and odd harmonic currents in the electrical circuit, causing the temperature of the cable to rise and accelerating the aging of the cable insulation. In some old buildings and communities, the electrical design does not take into account the impact of harmonics, which can easily cause the neutral line to overload, leading to the deterioration of the cable line insulation and the occurrence of electrical fire accidents.

[0003] In addition, with the improvement of people's living standards, high-power electrical appliances such as high-power oil heaters and heaters are widely used. When multiple devices are connected and operated simultaneously, it may cause line overload and heating, accelerate line aging, cause short circuits and ground faults, and result in electrical fires.

[0004] Based on the requirement for indoor aesthetics, low-voltage cables in buildings are buried in the walls, forming a hidden power grid in the building. It is difficult to detect and replace cables when problems such as cable overheating, aging, and grounding occur.

[0005] To prevent electrical fires, existing household power utilization generally installs air switches with leakage and overcurrent protection. When leakage or overcurrent occurs, the switch trips and cuts off the power. This is a post-disposal method, and it is difficult to troubleshoot the problem, which can cause inconvenience to residents. Large office buildings generally install electrical fire monitoring systems, which detect leakage and cable temperature in real time by installing residual current detection devices and cable temperature detection devices in the distribution cabinet. When leakage or cable temperature is too high, an alarm or trip is triggered. This is also a post-disposal method, and it is difficult to locate the problem, which does not meet the safety first and prevention first principle of safe power utilization.

[0006] In summary, the existing technical solutions have the following shortcomings: ① they are all post-processing methods and do not meet the prevention first requirement; ② they cannot determine the cause of the electrical safety hazard; and ③ they lack effective methods to guide people to use electricity safely and intelligently.

[0007] Therefore, to prevent electrical fires and achieve safe power utilization, it is necessary to analyze various hidden dangers that cause electrical fires, consider comprehensively, locate the cause, and eliminate it in a timely manner. This can achieve safe power utilization and meet the safety first and prevention first requirement of safe power utilization. SUMMARY

[0008] The technical problem solved by the present application is to provide a safe power consumption monitoring system and method based on non-intrusive load identification technology to overcome the deficiencies in the prior art.

[0009] The technical solution of the present application to solve the above technical problems is as follows: a safe power consumption monitoring method based on non-intrusive load identification technology, comprising:

[0010] A non-intrusive load identification monitoring terminal is used to monitor the total incoming line voltage, current and harmonic in real time;

[0011] A safe power consumption cloud platform is used to acquire the voltage, current and harmonic collected by the non-intrusive load identification monitoring terminal, and to decompose and analyze the power consumption load to determine whether there is a high-power malignant load and / or harmonic malignant load on each air switch outgoing line;

[0012] A user terminal is used to receive the safe power consumption reminders sent by the safe power consumption cloud platform.

[0013] Based on the above technical solution, the present application can also be improved as follows.

[0014] Further, the non-intrusive load identification monitoring terminal uploads the collected electrical parameters to the safe power consumption cloud platform through 4G or WiFi.

[0015] Based on the above technical solution, the present application also provides a safe power consumption monitoring method based on non-intrusive load identification technology, which uses the above safe power consumption monitoring system based on non-intrusive load identification technology, comprising the following steps:

[0016] S100, determining the diameter of each air switch outgoing line;

[0017] S200, determining the corresponding safe carrying capacity of each air switch outgoing line from the corresponding table of line diameter and safe carrying capacity , and classifying the air switch outgoing line according to lighting, socket and air conditioner, and then obtaining the lighting power , socket power , and air conditioner power ;

[0018] S300, monitoring the total incoming line voltage, current and harmonic in real time;

[0019] S400, load decomposition and load identification of power consumption load, determining the type and real-time load curve of various power consumption appliances on the line, and obtaining the operating power P, harmonic distortion rate THD and harmonic power of each power consumption appliance;

[0020] S500, if the power P of the non-illumination and air conditioner type electrical appliance is greater than the set minimum socket power , then it is classified as a high-power malignant load;

[0021] If the electrical appliance harmonic distortion rate THD is greater than the set threshold or the harmonic power is greater than the set threshold, then it is classified as a harmonic malignant load;

[0022] S600, the judgment result is pushed to the user to remind the user to use electricity safely.

[0023] Further, in S100, the wire diameter of each air break outgoing line is determined according to the power distribution design drawing and on-site checking and correction.

[0024] Further, in S400, the load recognition algorithm is used to decompose the electrical load.

[0025] Further, the set threshold of the harmonic distortion rate THD is 0.1-0.2, and the set threshold of the harmonic power is 0.2-0.3 min. ).

[0026] Further, in S600, the judgment result is pushed to the user's safe electricity app.

[0027] The beneficial effects of the present application are: by installing a non-intrusive load monitoring terminal + a safe electricity platform + a user end, using a non-intrusive load recognition technology, real-time collection of user total power parameters, identification of various types of electrical appliances, high-power malignant loads and harmonic malignant loads, reminding and guiding users to avoid use, and eliminating the hidden danger of electrical safety from the root, truly achieving the safe electricity requirement of "safety first, prevention first", and improving the user's electricity happiness. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the structure diagram of the safe electricity monitoring system based on the non-intrusive load recognition technology in the present application;

[0029] Figure 2 is the flow chart of the safe electricity monitoring method based on the non-intrusive load recognition technology in the present application.

[0030] In the drawings, the components represented by each reference numeral are listed as follows:

[0031] 1, non-intrusive load recognition monitoring terminal, 2, safe electricity cloud platform, 3, user end. DETAILED DESCRIPTION

[0032] The principles and characteristics of the present application are described below in conjunction with the drawings, and the examples are only used to explain the present application and not to limit the scope of the present application.

[0033] Embodiment 1

[0034] As shown in the figure, a safe power utilization monitoring system based on non-intrusive load identification technology comprises: Figure 1

[0035] The non-intrusive load identification monitoring terminal 1 is used to monitor the total incoming line voltage, current and harmonic in real time, wherein the voltage and current are mainly obtained by means of the puncture type voltage and current transformer in the non-intrusive load identification monitoring terminal 1;

[0036] The safe power utilization cloud platform 2 is used to acquire the voltage, current and harmonic collected by the non-intrusive load identification monitoring terminal 1, and to decompose and analyze the power utilization load to determine whether there is a high-power malignant load and / or harmonic malignant load on each air switch outgoing line;

[0037] The user end 3 is used to receive the safe power utilization reminder sent by the safe power utilization cloud platform 2 to remind not to use or less to use the malignant load, so as to realize safe power utilization and intelligent power utilization.

[0038] Embodiment 2

[0039] As shown in the figure, the embodiment is a further improvement based on embodiment 1, and the specific improvements are as follows: Figure 1

[0040] The non-intrusive load identification monitoring terminal 1 uploads the collected electric parameters to the safe power utilization cloud platform 2 through 4G or WiFi, and adopts wireless data transmission, so that wiring is not needed and the flexibility is better.

[0041] Embodiment 3

[0042] As shown in the figure, a safe power utilization monitoring method based on non-intrusive load identification technology adopts the safe power utilization monitoring system based on non-intrusive load identification technology, and comprises the following steps: Figure 2 S100, determine the line diameter of each air switch outgoing line;

[0043] S200, determine the corresponding safe carrying capacity of each air switch outgoing line from the corresponding table of line diameter and safe carrying capacity

[0044] , and further determine the corresponding power , and classify the air switch outgoing line according to the light, socket and air conditioner, and then obtain the lighting power , socket power and air conditioner power ;

[0045] S300, the non-intrusive load identification monitoring terminal 1 monitors the total incoming line voltage, current and harmonic in real time;

[0046] ​​​The S400 and Safe Electricity Cloud Platform 2 acquire the total incoming line voltage, current, and harmonics monitored by the non-intrusive load identification and monitoring terminal 1. They then perform load decomposition and identification, identifying the types of various electrical appliances (such as air conditioners, refrigerators, oil heaters, etc.), determining the real-time load curves of various electrical appliances on the home or office circuits, and obtaining the operating power P, harmonic distortion rate (THD), and harmonic power of each appliance. ;

[0047] S500. Considering that lighting and air conditioning circuits are generally dedicated lines and their loads are unlikely to be overloaded, overload usually occurs in the socket circuit. Therefore, the minimum value should be taken. As a threshold, if the power P of non-lighting and air conditioning appliances exceeds the set minimum socket power... If so, it is classified as a high-power malicious load;

[0048] If the electrical harmonic distortion rate (THD) is greater than the set threshold or the harmonic power... If the load exceeds the set threshold, it is classified as a harmful harmonic load.

[0049] S600 pushes the judgment result to the user to remind the user to use electricity safely.

[0050] Example 4

[0051] like Figure 2 As shown, this embodiment is a further improvement on embodiment 3, as detailed below:

[0052] In S100, the wire diameter of each circuit breaker outgoing line is determined based on the power distribution design drawings and on-site verification and correction.

[0053] Example 5

[0054] like Figure 2 As shown, this embodiment is a further improvement on embodiment 3 or 4, as detailed below:

[0055] The S400 uses a load identification algorithm to decompose the electrical load. The load identification algorithm is a mature existing technology, so it will not be described in detail here.

[0056] Example 6

[0057] like Figure 2 As shown, this embodiment is a further improvement on embodiment 3, 4, or 5, as detailed below:

[0058] The threshold value for harmonic distortion rate (THD) is set at 0.1–0.2, and the harmonic power... The set threshold is 0.2–0.3 min ( ), min( ) represents the smallest .

[0059] Embodiment 7

[0060] As Figure 2 shown, the embodiment is further improved on the basis of any one of embodiments 3-6, as follows:

[0061] The judgment result in S600 is pushed to the user's security power consumption applet to remind not to use or less to use the malignant load.

[0062] Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A safe electricity monitoring system based on non-intrusive load identification technology, characterized in that, include: Non-intrusive load identification and monitoring terminal (1) is used to monitor the total incoming line voltage, current and harmonics in real time; The safe electricity cloud platform (2) is used to obtain the voltage, current and harmonics collected by the non-intrusive load identification and monitoring terminal (1), and to decompose and analyze the electricity load to determine whether there are high-power malicious loads and / or harmonic malicious loads on each circuit breaker output line. The user terminal (3) is used to receive safety reminders sent by the safety cloud platform (2).

2. The safe electricity monitoring system based on non-intrusive load identification technology according to claim 1, characterized in that, The non-intrusive load identification and monitoring terminal (1) uploads the collected electrical parameters to the safe electricity cloud platform (2) via 4G or WiFi.

3. A method for monitoring safe electricity use based on non-intrusive load identification technology, characterized in that, The safe electricity monitoring system based on non-intrusive load identification technology as described in claim 1 or 2 includes the following steps: S100. Determine the wire diameter of each circuit breaker outgoing line; S200. Determine the safe current carrying capacity of each circuit breaker outgoing line using the correspondence table between wire diameter and safe current carrying capacity. The lighting power is then categorized according to the circuit breaker outputs for light sources, sockets, and air conditioners. Socket power Air conditioner power ; S300: Real-time monitoring of main incoming line voltage, current, and harmonics; S400. Perform load decomposition and load analysis on the electrical load to determine the types of various electrical appliances on the line and their real-time load curves, and obtain the operating power P, harmonic distortion rate THD, and harmonic power of each electrical appliance. ; S500, If the power P of non-lighting and air conditioning appliances is greater than the set minimum socket power... If so, it is classified as a high-power malicious load; If the electrical harmonic distortion rate (THD) is greater than the set threshold or the harmonic power... If the load exceeds the set threshold, it is classified as a harmful harmonic load. S600 pushes the judgment result to the user to remind the user to use electricity safely.

4. The method for monitoring safe electricity use based on non-intrusive load identification technology according to claim 3, characterized in that, In S100, the wire diameter of each circuit breaker outgoing line is determined based on the power distribution design drawings and on-site verification and correction.

5. The method for monitoring safe electricity use based on non-intrusive load identification technology according to claim 3, characterized in that, The S400 uses a load identification algorithm to decompose electrical loads.

6. The method for monitoring safe electricity use based on non-intrusive load identification technology according to claim 3, characterized in that, The threshold value for harmonic distortion rate (THD) is set at 0.1–0.2, and the harmonic power... The set threshold is 0.2–0.3 min ( ).

7. The method for monitoring safe electricity use based on non-intrusive load identification technology according to claim 3, characterized in that, The S600 will push the judgment result to the user's safe electricity use mini-program.

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