A fault detection system for electrical equipment

Abstract

The present invention relates to the technical field of electrical equipment fault analysis, and more particularly to a fault detection system for electrical equipment, comprising: an acquisition unit for periodically acquiring electrical parameters of corresponding electrical equipment during operation; a processing unit for filtering the electrical parameters; a storage unit for storing the processed electrical parameters; an analysis unit for determining whether the circuits of the electrical equipment meet standards based on the operating conditions of each electrical equipment within a period, analyzing the reasons for non-compliance based on the evaluation results and generating corresponding processing instructions; and a control unit for re-determining the operating parameters of the fault detection system for the electrical equipment. The present invention effectively implements real-time detection of the operating conditions of the electrical equipment, effectively implements real-time detection of the circuits of the electrical equipment, and effectively improves the detection efficiency of the electrical equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment failure analysis, and in particular to a failure detection system for electrical equipment. Background Art

[0002] Electrical equipment refers to equipment that converts, controls, protects, and regulates the production, transmission, and use of electrical energy in power systems. It is widely used, primarily in manufacturing, power generation, residential, rail transit, agriculture, and healthcare. Electrical equipment failure refers to an abnormality that occurs during operation, causing the equipment to malfunction or experience performance degradation. Fault detection in electrical equipment is extremely important in ensuring the normal operation of the equipment, ensuring personnel safety, extending equipment life, reducing maintenance costs, and improving production efficiency.

[0003] Chinese patent publication number: CN111352003B, discloses an analysis system for electrical equipment failure, including an acquisition module, a receiving unit, an equipment analysis module, a determination module, an equipment monitoring module, an alarm unit and an intelligent device; the acquisition module is used to collect electrical equipment information and transmit it to the receiving unit, the receiving unit receives the electrical equipment information and performs marking processing on it, and the specific marking processing process is: Step 1: Obtain electrical equipment information. The present invention uses the determination module to analyze the relevant data monitored by the equipment monitoring module and obtained by the equipment analysis module, thereby calculating the relevant data, determining whether the equipment is worn or faulty, and calculating the remaining time of normal operation of the equipment based on the relevant data, and issuing a corresponding alarm signal, thereby increasing the credibility of equipment fault monitoring, avoiding equipment damage, reducing economic losses, increasing the safety of the device, and improving the efficiency of fault detection.

[0004] As can be seen, the above solution uses the analysis system to detect whether the electrical equipment is worn or faulty. However, the above solution cannot achieve real-time detection of the operating status of the electrical equipment, cannot achieve real-time detection of the circuit of the electrical equipment, and cannot guarantee the detection efficiency of the electrical equipment. Summary of the Invention

[0005] To this end, the present invention provides a fault detection system for electrical equipment to overcome the problem in the prior art that the operating conditions and circuits of the electrical equipment cannot be detected in real time, resulting in low detection efficiency for the electrical equipment.

[0006] To achieve the above object, the present invention provides a fault detection system for electrical equipment, comprising:

[0007] The collection unit includes several collectors for periodically collecting electrical parameters of the corresponding electrical equipment during operation;

[0008] a processing unit connected to the acquisition unit, configured to filter the electrical parameters to reduce signal interference;

[0009] a storage unit connected to the processing unit and configured to store the processed electrical parameters;

[0010] an analyzing unit connected to the storage unit and configured to determine whether the circuit of the electrical equipment complies with the standard based on the operating conditions of each of the electrical equipment within a cycle;

[0011] The analyzing unit is configured to determine whether the circuit of the electrical equipment complies with the standard based on the equipment level distribution, and, if it is determined that the circuit of the electrical equipment does not comply with the standard, determine whether the circuit of the electrical equipment complies with the standard based on the total number of equipment, or determine the reason why the circuit of the electrical equipment does not comply with the standard based on the number of tertiary equipment; wherein the equipment level distribution is an evaluation result of the operating status of the electrical equipment, and the total number of equipment is the sum of the number of first-level equipment, the number of second-level equipment, and the number of third-level equipment;

[0012] The analyzing unit is further configured to determine whether the circuit of the electrical device complies with the standard based on the total number of devices, and to modify a preset voltage average value based on the total number of devices according to a determination result, or to determine a reason why the circuit of the electrical device does not comply with the standard based on the number of the three-level devices;

[0013] The analysis unit is further configured to determine a reason why the circuit of the electrical device does not meet the standard based on the three-level device difference, and generate corresponding processing instructions based on the determined reason for non-compliance with the standard, including: issuing a circuit fault notification if it is determined that the circuit of the electrical device does not meet the standard is a circuit fault; reducing the bandwidth based on the average voltage value of the three-level device if it is determined that the circuit of the electrical device does not meet the standard is non-standard processing of the electrical parameters; or correcting the collection frequency based on the number of three-level devices if it is determined that the circuit of the electrical device does not meet the standard is non-standard collection of electrical parameters; wherein the three-level device difference is the difference between the number of the three-level devices and the average number of devices, and the average number of devices is the ratio of the total number of devices to the number of levels;

[0014] A control unit is connected to the acquisition unit, the processing unit and the analysis unit respectively, and is used to redetermine the operating parameters of the fault detection system for the electrical equipment based on the received processing instructions.

[0015] Furthermore, the analysis unit is used to determine whether the operation of the electrical equipment complies with the standards based on the voltage average value, record the electrical equipment as the first-level equipment according to the determination result, and, when it is determined that the operation of the electrical equipment does not comply with the standards, determine whether the operation of the electrical equipment complies with the standards based on the variance of each voltage value within the cycle, or determine whether the operation of the electrical equipment complies with the standards based on the historical voltage average value; wherein the voltage average value is the average value of each voltage value of a single electrical device within the cycle, and each voltage value is the collected electrical parameter.

[0016] Furthermore, the analysis unit is also used to determine whether the operation of a single electrical device complies with the standards based on the voltage value variance, and, based on the determination result, record the electrical device as the secondary device, or, based on the historical voltage average value, determine whether the operation of the electrical device complies with the standards; wherein the voltage value variance is the variance of each voltage value within a period.

[0017] Furthermore, the analysis unit is also used to determine whether the operation of a single electrical device complies with the standard based on the voltage average value slope, and, based on the determination result, record the electrical device as the third-level device, or issue a notification of equipment failure; wherein, the voltage average value slope is the slope of the time-voltage average value curve drawn based on the historical voltage average value at the current cycle node.

[0018] Furthermore, the control unit is used to reduce the preset voltage average value based on the difference in the total number of devices, and the reduction in the preset voltage average value is proportional to the difference in the total number of devices; wherein the difference in the total number of devices is the difference between the total number of devices and the preset total number of devices.

[0019] Furthermore, the control unit is further configured to reduce the bandwidth based on the average voltage value of the three-level device, and the reduction range of the bandwidth is inversely proportional to the average voltage value of the three-level device.

[0020] Furthermore, the control unit is also used to increase the acquisition frequency based on the total number of the three-level devices, and the increase in the acquisition frequency is proportional to the total number of the three-level devices; wherein the total number of the three-level devices is the number of the three-level devices.

[0021] Compared with the prior art, the beneficial effect of the present invention lies in that, by setting up an analysis unit and a control unit, the present invention determines whether the operation of a single electrical device complies with the standard through the analysis unit, thereby effectively realizing real-time detection of the operating status of the electrical equipment, and performing grade evaluation on the single electrical equipment according to the determination result, and can timely and accurately analyze the status of the electrical equipment, and determine whether the circuit of the electrical equipment complies with the standard based on the assessment result of the operating status, thereby effectively realizing real-time detection of the circuit of the electrical equipment, the analysis unit analyzes the reasons for non-compliance with the standard based on the assessment result and generates corresponding processing instructions, and the control unit can re-determine the operating parameters of the fault detection system for the electrical equipment based on the corresponding processing instructions, thereby effectively ensuring the operating efficiency of the fault detection system for the electrical equipment and effectively improving the detection efficiency of the electrical equipment.

[0022] Furthermore, the analysis unit provided in the present invention is also used to determine whether the operation of a single electrical device complies with the standards based on the average voltage value, further realizing real-time detection of the operating status of the electrical equipment, and being able to detect the voltage value in real time, and promptly and accurately determine whether the operation of a single electrical device complies with the standards, thereby further improving the detection efficiency of the electrical equipment.

[0023] Furthermore, the analysis unit provided in the present invention is also used to determine whether the operation of a single electrical device complies with the standards based on the voltage value variance, further realizing real-time detection of the operating status of the electrical equipment, and being able to detect the voltage value in real time to avoid the occurrence of misjudgment, thereby further improving the detection efficiency of the electrical equipment.

[0024] Furthermore, the analysis unit provided in the present invention is also used to determine whether the operation of a single electrical device meets the standards based on the slope of the voltage average value, further realizing real-time detection of the operating status of the electrical equipment, avoiding the occurrence of misjudgment between the operation of a single electrical device not meeting the standards and the occurrence of electrical equipment failures, and further improving the detection efficiency of electrical equipment.

[0025] Furthermore, the analysis unit provided in the present invention is also used to determine whether the circuit of the electrical equipment meets the standards based on the equipment level distribution, and can timely and accurately complete the determination of whether the circuit of the electrical equipment meets the standards. While further realizing real-time detection of the circuit of the electrical equipment, it further improves the detection efficiency of the electrical equipment.

[0026] Furthermore, the analysis unit provided in the present invention is also used to determine whether the circuit of the electrical equipment meets the standards based on the total number of devices when the equipment level distribution is that the number of second-level devices is greater than the number of first-level devices and greater than the number of third-level devices, so as to avoid the occurrence of misjudgment, further realizing real-time detection of the circuit of the electrical equipment while further improving the detection efficiency of the electrical equipment.

[0027] Furthermore, the control unit provided in the present invention is used to reduce the preset voltage average value based on the difference in the total number of devices, effectively achieving the matching of the voltage average value and the difference in the total number of devices, while further ensuring the operating efficiency of the fault detection system for electrical equipment, and further improving the detection efficiency of electrical equipment.

[0028] Furthermore, the analysis unit provided in the present invention is also used to determine the reason why the circuit of the electrical equipment does not meet the standards based on the difference between the three-level equipment. It can make timely and accurate judgments on the reasons for non-compliance with the standards, while further realizing real-time detection of the circuit of the electrical equipment and further improving the detection efficiency of the electrical equipment.

[0029] Furthermore, the control unit provided in the present invention is also used to reduce the bandwidth based on the voltage average value of the three-level equipment, which can effectively adjust the parameters for the filtering processing, while further ensuring the operating efficiency of the fault detection system for electrical equipment, and further improving the detection efficiency of electrical equipment.

[0030] Furthermore, the control unit provided in the present invention is also used to increase the acquisition frequency based on the total number of three-level devices, which can effectively avoid the occurrence of situations where the acquisition of electrical parameters does not meet the standards. While further ensuring the operating efficiency of the fault detection system for electrical equipment, it further improves the detection efficiency of electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural block diagram of a fault detection system for electrical equipment according to an embodiment of the present invention;

[0032] Figure 2 This is a flowchart of a fault detection system for electrical equipment according to an embodiment of the present invention;

[0033] Figure 3 This is a flow chart for determining whether the operation of electrical equipment complies with standards according to an embodiment of the present invention;

[0034] Figure 4 This is a flow chart of determining whether a circuit of an electrical device complies with standards and determining the reason for not complying with standards according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.

[0036] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0037] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0038] See also Figure 1 As shown in FIG, it is a structural block diagram of a fault detection system for electrical equipment according to an embodiment of the present invention. The system according to the embodiment of the present invention includes an acquisition unit, a processing unit, a storage unit, an analysis unit and a control unit, wherein:

[0039] The collection unit includes a plurality of collectors for periodically collecting electrical parameters of the corresponding electrical equipment during operation;

[0040] The processing unit is connected to the acquisition unit and is used to filter the electrical parameters to reduce signal interference;

[0041] The storage unit is connected to the processing unit and is used to store the processed electrical parameters;

[0042] an analysis unit connected to the storage unit, configured to determine whether the circuit of each electrical device complies with the standard based on the operating status of each electrical device during the cycle, and to analyze the reasons for non-compliance with the standard based on the evaluation results; the analysis unit is further configured to generate corresponding processing instructions based on the determined reasons for non-compliance with the standard;

[0043] The control unit is connected to the acquisition unit, the processing unit and the analysis unit respectively, and is used to redetermine the operating parameters of the fault detection system for the electrical device based on the received processing instructions;

[0044] Specifically, the collection period of the electrical parameters when the electrical equipment is running is 5 hours, and the collection frequency within the collection period is 4 times per hour.

[0045] See also Figure 2As shown, it is a workflow diagram of a fault detection system for electrical equipment according to an embodiment of the present invention. When the fault detection system for electrical equipment according to the embodiment of the present invention is in operation, the multiple collectors of the acquisition unit periodically acquire the electrical parameters corresponding to the operation of the electrical equipment, the processing unit filters the electrical parameters to reduce signal interference, the storage unit stores the processed electrical parameters, the analysis unit determines whether the circuit of the electrical equipment meets the standard based on the operating status of each electrical equipment within the period, the analysis unit analyzes the reasons for non-compliance with the standard based on the evaluation results, the analysis unit generates corresponding processing instructions based on the determined reasons for non-compliance with the standard, and the control unit re-determines the operating parameters of the fault detection system for the electrical equipment based on the received processing instructions.

[0046] See also Figure 3 As shown, it is a flow chart of determining whether the operation of electrical equipment complies with standards according to an embodiment of the present invention. The analysis unit of the embodiment of the present invention is used to determine whether the operation of a single electrical equipment complies with standards based on the voltage average value, wherein the voltage average value is the average value of each voltage value of the electrical equipment within a period, and each voltage value is the collected electrical parameter;

[0047] If the voltage average value is greater than or equal to a second preset voltage average value A2 set in the analysis unit, the analysis unit determines that the operation of the single electrical device meets the standard and records the electrical device as a first-level device; wherein, in this embodiment, the second preset voltage average value A2=220V;

[0048] If the voltage average value is less than the second preset voltage average value A2 and is greater than or equal to the first preset voltage average value A1 set in the analysis unit, the analysis unit determines that the operation of the single electrical device does not meet the standard, and determines whether the operation of the electrical device meets the standard based on the variance of each voltage value within the cycle, where the first preset voltage average value A1 in this embodiment is 209V;

[0049] If the voltage average value is less than the first preset voltage average value A1, the analysis unit determines that the operation of the single electrical device does not meet the standard, and determines whether the operation of the electrical device meets the standard based on the historical voltage average value.

[0050] Please continue reading Figure 3 As shown, the analysis unit in the embodiment of the present invention is further used to determine whether the operation of a single electrical device complies with the standard based on the voltage value variance, wherein the voltage value variance is the variance of each voltage value within a period:

[0051] If the voltage value variance is less than or equal to a preset voltage value variance C set in the analysis unit, the analysis unit determines that the operation of the single electrical device meets the standard and records the electrical device as a secondary device, wherein the preset voltage value variance C in this embodiment is 0.57;

[0052] If the voltage value variance is greater than the preset voltage value variance C, the analyzing unit determines that the operation of the single electrical device does not meet the standard, and determines whether the operation of the electrical device meets the standard based on the historical voltage average value.

[0053] Please continue reading Figure 3 As shown, the analysis unit of the embodiment of the present invention is further used to determine whether the operation of a single electrical device complies with the standard based on the voltage average slope, wherein the voltage average slope is the slope of the time-voltage average curve drawn based on the historical voltage average at the current cycle node:

[0054] If the voltage average slope is less than or equal to a preset voltage average slope L set in the analysis unit, the analysis unit determines that the operation of the single electrical device does not meet the standard, and the reason for non-compliance is that the circuit of the electrical device does not meet the standard, and the electrical device is recorded as a third-level device. In this embodiment, the preset voltage average slope L=1.32;

[0055] If the voltage average slope is greater than the preset voltage average slope L, the analysis unit determines that the operation of the single electrical device does not meet the standard, the electrical device fails, and issues a device failure notification.

[0056] See also Figure 4 , which is a flow chart of determining whether the circuit of an electrical device complies with standards and determining the reasons for non-compliance with standards according to an embodiment of the present invention. The analysis unit of the embodiment of the present invention is used to determine whether the circuit of the electrical device complies with standards based on the device level distribution, wherein the device level distribution is the evaluation result of the operating status of the electrical device:

[0057] If the device level distribution is such that the number of the first-level devices is greater than the number of the second-level devices and greater than the number of the third-level devices, the analyzing unit determines that the circuit of the electrical device meets the standard, completes the periodic determination of the circuit of the electrical device, and determines whether the circuit of the electrical device meets the standard in the next period;

[0058] If the device level distribution is such that the number of the second-level devices is greater than the number of the first-level devices and greater than the number of the third-level devices, the analyzing unit determines that the circuit of the electrical device does not comply with the standard, and determines whether the circuit of the electrical device complies with the standard based on the total number of devices, wherein the total number of devices is the sum of the number of the first-level devices, the number of the second-level devices, and the number of the third-level devices;

[0059] If the device level distribution is such that the number of the third-level devices is greater than the number of the first-level devices and greater than the number of the second-level devices, the analyzing unit determines that the circuit of the electrical device does not comply with the standard, and determines the reason why the circuit of the electrical device does not comply with the standard based on the number of the third-level devices;

[0060] Specifically, if the number of devices of different levels is the same in the device level distribution, the device of the higher level is recorded as the device of the largest level, and the level ranking is that the first-level device is greater than the second-level device, which is greater than the third-level device.

[0061] Please continue reading Figure 4 As shown, the analysis unit in the embodiment of the present invention is further configured to determine whether the circuit of the electrical device complies with the standard based on the total number of devices:

[0062] If the total number of devices is greater than the preset total number of devices Q set in the analysis unit, the analysis unit determines the presence of peak power consumption, and based on the total number of devices to correct the preset voltage average, wherein the present embodiment preset total number of devices Q = 286;

[0063] If the total number of devices is less than or equal to the preset total number of devices Q, the analyzing unit determines that the circuit of the electrical device does not meet the standard, and determines the reason why the circuit of the electrical device does not meet the standard based on the number of the third-level devices.

[0064] Please continue reading Figure 4 As shown, the control unit of the embodiment of the present invention is used to reduce the preset voltage average value based on the difference in the total number of devices, wherein the difference in the total number of devices is the difference between the total number of devices and the preset total number of devices:

[0065] If the total number of devices difference is greater than a second preset total number of devices difference ΔN2 set in the analysis unit, the control unit reduces the preset voltage average value to 0.953 times the initial preset voltage average value, wherein the second preset total number of devices difference ΔN2 in this embodiment is 392;

[0066] If the total number of devices difference is less than or equal to the second preset total number of devices difference ΔN2 and greater than the first preset total number of devices difference ΔN1 set in the analysis unit, the control unit reduces the preset voltage average value to 0.967 times the initial preset voltage average value, where the first preset total number of devices difference ΔN1 in this embodiment is 103;

[0067] If the total number of devices difference is less than or equal to the first preset total number of devices difference ΔN1, the control unit reduces the preset voltage average value to 0.988 times the initial preset voltage average value.

[0068] Please continue reading Figure 4 As shown, the analysis unit of the embodiment of the present invention is further configured to determine the reason why the circuit of the electrical device does not meet the standard based on the three-level device difference, wherein the three-level device difference is the difference between the number of the three-level devices and the average number of devices, and the average number of devices is the ratio of the total number of devices to the level number. In the embodiment of the present invention, the level number E=3:

[0069] If the three-level device difference is less than a first preset three-level device difference ΔD1 set in the analysis unit, the analysis unit determines that the reason why the circuit of the electrical device does not meet the standard is that a circuit fault occurs, and issues a circuit fault notification. In this embodiment, the first preset three-level device difference ΔD1=37;

[0070] If the three-level device difference is greater than or equal to the first preset three-level device difference ΔD1 and less than the second preset three-level device difference ΔD2 set in the analysis unit, the analysis unit determines that the reason why the circuit of the electrical device does not meet the standard is that the processing of the electrical parameters does not meet the standard, and it is necessary to adjust the parameters of the filtering processing and reduce the bandwidth based on the average voltage value of the three-level device. In this embodiment, the second preset three-level device difference ΔD2=58;

[0071] If the three-level device difference is greater than or equal to the second preset three-level device difference ΔD2, the analysis unit determines that the reason why the circuit of the electrical device does not meet the standard is that the collection of the electrical parameters does not meet the standard, and corrects the collection frequency based on the number of the three-level devices.

[0072] Please continue reading Figure 4 As shown, the control unit of the embodiment of the present invention is further configured to reduce the bandwidth based on the average voltage value of the three-level device:

[0073] If the voltage average value of the three-level device is greater than the voltage average value F2 of the second preset three-level device set in the analysis unit, the control unit reduces the bandwidth to 0.95 times the initial bandwidth, wherein the voltage average value F2 of the second preset three-level device in this embodiment is 203V;

[0074] If the voltage average value of the three-level device is less than or equal to the voltage average value F2 of the second preset three-level device and is greater than the voltage average value F1 of the first preset three-level device set in the analysis unit, the control unit reduces the bandwidth to 0.88 times the initial bandwidth, wherein the voltage average value F1 of the first preset three-level device in this embodiment is 198V;

[0075] If the voltage average value of the three-level device is less than or equal to the voltage average value F1 of the first preset three-level device, the control unit reduces the bandwidth to 0.82 times the initial bandwidth.

[0076] Please continue reading Figure 4 As shown, the control unit of the embodiment of the present invention is further configured to increase the acquisition frequency based on the total number of three-level devices, wherein the total number of three-level devices is the number of the three-level devices:

[0077] If the total number of the three-level devices is greater than the second preset total number of the three-level devices T2 set in the analysis unit, the control unit increases the acquisition frequency to 1.75 times the initial acquisition frequency, wherein the second preset total number of the three-level devices T2 in this embodiment is 117;

[0078] If the total number of the third-level devices is less than or equal to the second preset total number of the third-level devices T2 and is greater than the first preset total number of the third-level devices T1 set in the analysis unit, the control unit increases the acquisition frequency to 1.50 times the initial acquisition frequency, wherein the first preset total number of the third-level devices T1 in this embodiment is 102;

[0079] If the total number of the three-level devices is less than or equal to the first preset total number T1 of the three-level devices, the control unit increases the acquisition frequency to 1.25 times the initial acquisition frequency. Example 1

[0080] Fault detection is performed on medical electrical equipment in a single hospital, and electrical parameters within a 5-hour acquisition cycle are obtained. The acquisition frequency within the acquisition cycle is 4 times per hour. The voltage value of each medical electrical equipment within the cycle is obtained. For a single medical electrical equipment, the average value of each voltage value of the medical electrical equipment within the cycle is calculated and recorded as the voltage average value. When the voltage average value is greater than or equal to the second preset voltage average value of 220V, the operation of the single medical electrical equipment meets the standard, and the medical electrical equipment is recorded as a first-level equipment; when the voltage average value is less than the second preset voltage average value of 220V and greater than or equal to the first preset voltage average value of 209V, the variance of each voltage value within the cycle is calculated and recorded as the voltage value variance. When it is less than or equal to the preset voltage value variance of 0.57, the single medical electrical equipment meets the standard. The operation of the electrical equipment complies with the standards, and the electrical equipment is recorded as a second-level device; when the voltage value variance is greater than the preset voltage value variance of 0.57, and the voltage average is less than or equal to the first preset voltage average of 209V, the slope of the time-voltage average curve at the current cycle node is drawn based on the historical voltage average, and recorded as the voltage average slope. When it is less than or equal to the preset voltage average slope of 1.32, the operation of a single medical electrical device does not meet the standards. The reason for non-compliance is that the circuit of the medical electrical device does not meet the standards, and the medical electrical device is recorded as a third-level device. When it is greater than the preset voltage average slope of 1.32, the operation of a single medical electrical device does not meet the standards, the medical electrical device fails, and a device failure notification is issued.

[0081] The number of first-level devices is 1287, the number of second-level devices is 1, and the number of third-level devices is 0. The equipment level distribution is that the number of first-level devices is greater than the number of second-level devices and greater than the number of third-level devices. The circuit of the electrical equipment meets the standard. The periodic judgment of the circuit of the electrical equipment is completed, and whether the circuit of the electrical equipment meets the standard in the next period is judged. Example 2

[0082] Fault detection is performed on lighting electrical equipment in a single-family home. The process of evaluating the level of lighting electrical equipment is the same as that in Example 1. The number of first-level devices is 126, the number of second-level devices is 982, and the number of third-level devices is 1. The equipment level distribution is that the number of second-level devices is greater than the number of first-level devices and greater than the number of third-level devices. The circuit of the electrical equipment does not meet the standard, and whether the circuit of the electrical equipment meets the standard is determined based on the total number of devices. The total number of devices is 1109, which is greater than the preset total number of devices of 286. There is a peak in electricity consumption. The difference between the total number of devices 1109 and the preset total number of devices 286 is calculated and recorded as the total number of devices difference. The total number of devices difference is 823, which is greater than the second preset total number of devices difference of 392. The preset voltage average value is reduced to 0.953 times the initial preset voltage average value. Example 3

[0083] Fault detection is performed on the power electrical equipment of a single factory building. The process of level evaluation of the power electrical equipment is the same as that in Example 1. The number of level one equipment is 38, the number of level two equipment is 2, and the number of level three equipment is 136. The equipment level distribution is that the number of level three equipment is greater than the number of level one equipment and greater than the number of level two equipment. The difference between the number of level three equipment (136) and the average number of equipment (58.67) is calculated and recorded as the level three equipment difference. The level three equipment difference is 77.33, which is greater than or equal to the second preset level three equipment difference of 58. The reason why the circuit of the electrical equipment does not meet the standard is that the collection of electrical parameters does not meet the standard. The total number of level three equipment is 136, which is greater than the second preset level three equipment total number of 117. The collection frequency is increased to 1.75 times the initial collection frequency.

[0084] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

[0085] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A fault detection system for electrical equipment, characterized in that: include: The collection unit includes several collectors for periodically collecting electrical parameters of the corresponding electrical equipment during operation; a processing unit connected to the acquisition unit, configured to filter the electrical parameters to reduce signal interference; a storage unit connected to the processing unit and configured to store the processed electrical parameters; an analyzing unit connected to the storage unit and configured to determine whether the circuit of the electrical equipment complies with the standard based on the operating conditions of each of the electrical equipment within a cycle; The analyzing unit is configured to determine whether the circuit of the electrical equipment complies with the standard based on the equipment level distribution, and, if it is determined that the circuit of the electrical equipment does not comply with the standard, determine whether the circuit of the electrical equipment complies with the standard based on the total number of equipment, or determine the reason why the circuit of the electrical equipment does not comply with the standard based on the number of tertiary equipment; wherein the equipment level distribution is an evaluation result of the operating status of the electrical equipment, and the total number of equipment is the sum of the number of first-level equipment, the number of second-level equipment, and the number of third-level equipment; The analyzing unit is further configured to determine whether the circuit of the electrical device complies with the standard based on the total number of devices, and to modify a preset voltage average value based on the total number of devices according to a determination result, or to determine a reason why the circuit of the electrical device does not comply with the standard based on the number of the three-level devices; The analysis unit is further configured to determine a reason why the circuit of the electrical device does not meet the standard based on the three-level device difference, and generate corresponding processing instructions based on the determined reason for non-compliance with the standard, including: issuing a circuit fault notification if it is determined that the circuit of the electrical device does not meet the standard is a circuit fault; reducing the bandwidth based on the average voltage value of the three-level device if it is determined that the circuit of the electrical device does not meet the standard is non-standard processing of the electrical parameters; or correcting the collection frequency based on the number of three-level devices if it is determined that the circuit of the electrical device does not meet the standard is non-standard collection of electrical parameters; wherein the three-level device difference is the difference between the number of the three-level devices and the average number of devices, and the average number of devices is the ratio of the total number of devices to the number of levels; A control unit is connected to the acquisition unit, the processing unit and the analysis unit respectively, and is used to redetermine the operating parameters of the fault detection system for the electrical equipment based on the received processing instructions.

2. The fault detection system for electrical equipment according to claim 1, characterized in that: The analysis unit is used to determine whether the operation of the electrical equipment complies with the standards based on the voltage average value, record the electrical equipment as the first-level equipment according to the determination result, and, if it is determined that the operation of the electrical equipment does not comply with the standards, determine whether the operation of the electrical equipment complies with the standards based on the variance of each voltage value within the cycle, or determine whether the operation of the electrical equipment complies with the standards based on the historical voltage average value; wherein the voltage average value is the average value of each voltage value of a single electrical device within the cycle, and each voltage value is the collected electrical parameter.

3. The fault detection system for electrical equipment according to claim 2, characterized in that: The analysis unit is also used to determine whether the operation of a single electrical device complies with the standard based on the voltage value variance, and to record the electrical device as the secondary device according to the determination result, or to determine whether the operation of the electrical device complies with the standard based on the historical voltage average value; wherein the voltage value variance is the variance of each voltage value within a period.

4. The fault detection system for electrical equipment according to claim 3, characterized in that: The analysis unit is also used to determine whether the operation of a single electrical device complies with the standard based on the voltage average value slope, and, based on the determination result, record the electrical device as the third-level device, or issue a notification of equipment failure; wherein the voltage average value slope is the slope of the time-voltage average value curve drawn based on the historical voltage average value at the current cycle node.

5. The fault detection system for electrical equipment according to claim 1, characterized in that: The control unit is used to reduce the preset voltage average value based on the difference in the total number of devices, and the reduction range of the preset voltage average value is proportional to the difference in the total number of devices; wherein the difference in the total number of devices is the difference between the total number of devices and the preset total number of devices.

6. The fault detection system for electrical equipment according to claim 1, characterized in that: The control unit is further configured to reduce the bandwidth based on the average voltage of the three-level device, and the reduction extent of the bandwidth is inversely proportional to the average voltage of the three-level device.

7. The fault detection system for electrical equipment according to claim 1, characterized in that: The control unit is further configured to increase the acquisition frequency based on the total number of the three-level devices, and the increase in the acquisition frequency is proportional to the total number of the three-level devices; wherein the total number of the three-level devices is the number of the three-level devices.

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