Fault detection system for electrical equipment

Abstract

The invention relates to the technical field of electrical equipment fault analysis, in particular to a fault detection system for electrical equipment, which comprises an acquisition unit for periodically acquiring electrical parameters during operation of the corresponding electrical equipment, a processing unit for filtering the electrical parameters, and a storage unit for storing the processed electrical parameters, the analysis unit is used for judging whether the circuit of the electrical equipment meets the standard or not according to the operation condition of each electrical equipment in the period, analyzing the reason for not meeting the standard based on the evaluation result and generating a corresponding processing instruction; and the control unit is used for re-determining the operation parameters of the fault detection system for the electrical equipment. According to the invention, the real-time detection of the operation state of the electrical equipment is effectively realized, the real-time detection of the circuit of the electrical equipment is effectively realized, and the detection efficiency of the electrical equipment is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment fault analysis, and in particular to a fault 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. Electrical equipment is widely used, mainly in manufacturing, power generation, housing, rail transit, agriculture and medical and health fields. Electrical equipment failure refers to an abnormal situation that occurs during the operation of electrical equipment, causing it to fail to work normally or to degrade its performance. Electrical equipment fault detection has extremely important research significance in ensuring the normal operation of equipment, ensuring personnel safety, extending equipment service life, reducing maintenance costs and improving production efficiency.

[0003] Chinese Patent Publication No.: 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 analyzes the relevant data monitored by the equipment monitoring module and obtained by the equipment analysis module through the determination 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] It can be seen that the above scheme detects whether the electrical equipment is worn or faulty by analyzing the system. However, the above scheme cannot realize real-time detection of the operating status of the electrical equipment, cannot realize 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, so as to overcome the problem in the prior art that the operating status and circuit 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 a plurality of collectors for periodically collecting electrical parameters of the corresponding electrical equipment during operation;

[0008] A processing unit connected to the acquisition unit, for filtering the electrical parameters to reduce signal interference;

[0009] A storage unit connected to the processing unit and used to store the processed electrical parameters;

[0010] an analysis unit connected to the storage unit, for determining whether the circuit of the electrical equipment meets the standard according to the operating conditions of each of the electrical equipment in the cycle, and analyzing the reasons for not meeting the standard based on the evaluation results; the analysis unit is also used to generate corresponding processing instructions according to the determined reasons for not meeting the standard;

[0011] 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.

[0012] 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 a first-level device 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.

[0013] 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 to record the electrical device as a secondary device based on the determination result, or to determine whether the operation of the electrical device complies with the standards based on the historical voltage average value; wherein the voltage value variance is the variance of each voltage value within a period.

[0014] Furthermore, the analysis unit is also used to determine whether the operation of a single electrical device complies with the standards based on the slope of the voltage average value, and, based on the determination result, record the electrical device as a third-level device, or issue a notification of equipment failure; wherein the voltage average value slope is the slope of a time-voltage average value curve drawn based on the historical voltage average value at the current cycle node.

[0015] Further, the analysis unit is used to determine whether the circuit of the electrical equipment complies with the standard based on the equipment level distribution, and, when 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 assessment result of the operating status of the electrical equipment, and the total number of equipment is the sum of the number of the first-level equipment, the number of the second-level equipment, and the number of the tertiary equipment.

[0016] Furthermore, the analysis unit is also used to determine whether the circuit of the electrical equipment meets the standards based on the total number of devices, and to correct the preset voltage average value based on the total number of devices according to the determination result, or to determine the reason why the circuit of the electrical equipment does not meet the standards based on the number of the third-level devices.

[0017] 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.

[0018] Furthermore, the analysis unit 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, and to generate corresponding processing instructions according to the determined reason for non-compliance with the standards, including: issuing a circuit fault notification when it is determined that the circuit of the electrical equipment does not meet the standards is a circuit fault; reducing the bandwidth based on the voltage average value of the three-level equipment when it is determined that the circuit of the electrical equipment does not meet the standards is that the processing of the electrical parameters does not meet the standards; or correcting the acquisition frequency based on the number of three-level equipment when it is determined that the circuit of the electrical equipment does not meet the standards is that the acquisition of the electrical parameters does not meet the standards; wherein the difference between the three-level equipment is the difference between the number of the three-level equipment and the average number of equipment, and the average number of equipment is the ratio of the total number of equipment to the number of levels.

[0019] Furthermore, the control unit is further configured to reduce the bandwidth based on the voltage average value of the three-level device, and the reduction range of the bandwidth is inversely proportional to the voltage average 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 an analysis unit and a control unit, the analysis unit determines whether the operation of a single electrical device complies with the standard, 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, the present invention 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 voltage average value, further realizing real-time detection of the operating status of the electrical equipment. It is capable of detecting the voltage value in real time, and timely and accurately determining 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 complies with the standards based on the equipment level distribution, and can timely and accurately complete the determination of whether the circuit of the electrical equipment complies with 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 equipment when the equipment level distribution is that the number of second-level equipment is greater than the number of first-level equipment and greater than the number of third-level equipment, so as to avoid the occurrence of misjudgment, thereby further realizing real-time detection of the circuit of the electrical equipment and 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 for 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, and can promptly and accurately determine the reason 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 the electrical equipment, and further improving the detection efficiency of the electrical equipment.

[0030] Furthermore, the control unit provided in the present invention is also used to increase the collection frequency based on the total number of third-level devices, which can effectively avoid the occurrence of situations where the collection 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 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 working diagram of a fault detection system for electrical equipment according to an embodiment of the present invention;

[0033] Figure 3 A flowchart for determining whether the operation of an electrical device complies with a standard according to an embodiment of the present invention;

[0034] Figure 4 The present invention is a flowchart for determining whether a circuit of an electrical device complies with a standard and determining the reason why the circuit does not comply with the standard. 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 only used to explain the present invention and are not used 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 protection scope of the present invention.

[0037] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] See also Figure 1 As shown, 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 a collection 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, for determining whether the circuit of the electrical equipment meets the standard according to the operating conditions of each electrical equipment in a cycle, and analyzing the reasons for not meeting the standard based on the evaluation results; the analysis unit is also used to generate corresponding processing instructions according to the determined reasons for not meeting 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 equipment 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, several collectors of the acquisition unit periodically acquire the electrical parameters corresponding to the operation of the electrical equipment, the processing unit performs filtering processing on 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 according to the operating conditions of each electrical equipment within the period, the analysis unit analyzes the reasons for not meeting the standard based on the evaluation results, the analysis unit generates corresponding processing instructions according to the determined reasons for not meeting 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 an electrical device meets the standard 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 device meets the standard based on the voltage average value, wherein the voltage average value is the average value of each voltage value of the electrical device within a period, and each voltage value is the collected electrical parameter;

[0047] If the voltage average value is greater than or equal to the 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 the second preset voltage average value A2 in this embodiment is 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, wherein the first preset voltage average value A1 in this embodiment = 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 also used to determine whether the operation of a single electrical device meets 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 the 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 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.

[0053] Please continue reading Figure 3 As shown, the analysis unit in the embodiment of the present invention is also used to determine whether the operation of a single electrical device meets 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 value slope is less than or equal to the preset voltage average value 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 not meeting the standard is that the circuit of the electrical device does not meet the standard, and the electrical device is recorded as a third-level device, wherein the preset voltage average value slope L in this embodiment is 1.32;

[0055] If the voltage average value slope is greater than the preset voltage average value 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 As shown, it is a flow chart of determining whether the circuit of the electrical equipment meets the standard and determining the reason for not meeting the standard 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 equipment meets the standard based on the equipment level distribution, wherein the equipment level distribution is the evaluation result of the operating status of the electrical equipment:

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

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

[0061] Please continue reading Figure 4 As shown, the analysis unit in the embodiment of the present invention is also used to determine whether the circuit of the electrical device meets 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 that there is a peak in power consumption, and based on the total number of devices to correct the preset voltage average, wherein the total number of devices preset in this embodiment 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 total number of devices difference, wherein the total number of devices difference 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 the second preset total number of devices difference △N2 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 △N2 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 △N2 and greater than the first preset total number of devices difference △N1 set in the analysis unit, the control unit reduces the preset voltage average value to 0.967 times the initial preset voltage average value, wherein the first preset total number of devices difference △N1 in this embodiment=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 in the embodiment of the present invention is further used 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 equipment difference is less than the first preset three-level equipment difference △D1 set in the analysis unit, the analysis unit determines that the reason why the circuit of the electrical equipment does not meet the standard is that the circuit is faulty, and issues a circuit fault notification, wherein the first preset three-level equipment difference △D1 in this embodiment=37;

[0070] If the three-level device difference is greater than or equal to the first preset three-level device difference △D1 and less than the second preset three-level device difference △D2 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 the parameters of the filtering processing need to be adjusted, and the bandwidth is reduced based on the voltage average value of the three-level device, wherein the second preset three-level device difference △D2 in this embodiment=58;

[0071] If the three-level equipment difference is greater than or equal to the second preset three-level equipment difference ΔD2, the analysis unit determines that the reason why the circuit of the electrical equipment 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 equipment.

[0072] Please continue reading Figure 4 As shown, the control unit of the embodiment of the present invention is also used to reduce the bandwidth based on the voltage average 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 of the initial bandwidth.

[0076] Please continue reading Figure 4 As shown, the control unit in the embodiment of the present invention is further used 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 three-level devices is less than or equal to the second preset total number of the three-level devices T2 and is greater than the first preset total number of the three-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 three-level devices T1 in this embodiment is 102;

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

[0080] Example 1

[0081] Fault detection is performed on the medical electrical equipment of a single hospital, and the electrical parameters within the collection cycle of 5 hours are obtained. The collection frequency within the collection 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, which is 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, which is 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 The operation of the electrical equipment meets the standards, and the electrical equipment is recorded as a secondary device; when the voltage value variance is greater than the preset voltage value variance of 0.57, when 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 not meeting the standards is that the circuit of the medical electrical equipment does not meet the standards, and the medical electrical equipment 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 equipment fails, and a device failure notification is issued.

[0082] The number of level one devices is 1287, the number of level two devices is 1, and the number of level three devices is 0. The equipment level distribution is that the number of level one devices is greater than the number of level two devices and greater than the number of level three devices. The circuit of the electrical equipment meets the standard. The periodic determination of the circuit of the electrical equipment is completed, and a determination is made as to whether the circuit of the electrical equipment meets the standard in the next cycle.

[0083] Example 2

[0084] Fault detection is performed on lighting electrical equipment in a single-family house. The process of level evaluation of the lighting electrical equipment is the same as that in Example 1. The number of level one devices is 126, the number of level two devices is 982, and the number of level three devices is 1. The equipment level distribution is that the number of level two devices is greater than the number of level one devices and greater than the number of level three 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 of 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.

[0085] Example 3

[0086] 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 total number of level three equipment 117. The collection frequency is increased to 1.75 times the initial collection frequency.

[0087] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0088] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fault detection system for electrical equipment, characterized in that: include: The collection unit includes a plurality of collectors for periodically collecting electrical parameters of the corresponding electrical equipment during operation; A processing unit connected to the acquisition unit, for filtering the electrical parameters to reduce signal interference; A storage unit connected to the processing unit and used to store the processed electrical parameters; an analysis unit connected to the storage unit, for determining whether the circuit of the electrical equipment meets the standard according to the operating conditions of each of the electrical equipment in the cycle, and analyzing the reasons for not meeting the standard based on the evaluation results; the analysis unit is also used to generate corresponding processing instructions according to the determined reasons for not meeting the standard; 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 a first-level device 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 a cycle, or determine whether the operation of the electrical equipment complies with the standards based on a historical voltage average value; wherein the voltage average value is the average value of each voltage value of a single electrical device within a 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 standards based on the voltage value variance, and to record the electrical device as a secondary device based on the determination result, or to determine whether the operation of the electrical device complies with the standards 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 a third-level device, or issue a notification of equipment failure; wherein the voltage average value slope is the slope of a 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 4, characterized in that: The analysis unit is used to determine whether the circuit of the electrical equipment complies with the standard based on the equipment level distribution, and to determine whether the circuit of the electrical equipment complies with the standard based on the total number of equipment when it is determined that the circuit of the electrical equipment does not comply with the standard, or to 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 assessment result of the operating status of the electrical equipment, and the total number of equipment is the sum of the number of the first-level equipment, the number of the second-level equipment, and the number of the tertiary equipment.

6. The fault detection system for electrical equipment according to claim 5, characterized in that: The analysis unit is also used to determine whether the circuit of the electrical equipment meets the standards based on the total number of devices, and to correct the preset voltage average value based on the total number of devices according to the determination result, or to determine the reason why the circuit of the electrical equipment does not meet the standards based on the number of the third-level devices.

7. The fault detection system for electrical equipment according to claim 6, 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.

8. The fault detection system for electrical equipment according to claim 6, characterized in that: The analysis unit 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, and generate corresponding processing instructions according to the determined reasons for non-compliance with the standards, including: issuing a circuit fault notification when it is determined that the circuit of the electrical equipment does not meet the standards is a circuit fault; reducing the bandwidth based on the voltage average value of the three-level equipment when it is determined that the circuit of the electrical equipment does not meet the standards is that the processing of the electrical parameters does not meet the standards; or correcting the acquisition frequency based on the number of three-level equipment when it is determined that the circuit of the electrical equipment does not meet the standards is that the acquisition of the electrical parameters does not meet the standards; wherein the difference between the three-level equipment is the difference between the number of the three-level equipment and the average number of equipment, and the average number of equipment is the ratio of the total number of equipment to the number of levels.

9. The fault detection system for electrical equipment according to claim 8, characterized in that: The control unit is further configured to reduce the bandwidth based on the voltage average value of the three-level device, and the reduction degree of the bandwidth is inversely proportional to the voltage average value of the three-level device.

10. The fault detection system for electrical equipment according to claim 8, characterized in that: 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.

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