Water immersion prediction device, method and equipment for cable joint explosion-proof box

Abstract

The invention discloses a water immersion prediction device, method and equipment for a cable joint explosion-proof box, and belongs to the technical field of electric power facilities. The device comprises a parameter acquisition module used for acquiring mechanical parameters of a cable joint explosion-proof box and electrical parameters of a cable joint; the explosion-proof box detection module is used for identifying whether the cable joint explosion-proof box is abnormal in structural integrity according to the mechanical parameters; the water seepage identification module is used for identifying whether a water seepage event exists in the cable joint explosion-proof box or not according to the electrical parameters; and the warning generation module is used for generating water seepage warning information of the cable joint explosion-proof box under the condition of identifying that the water seepage event exists in the cable joint explosion-proof box. According to the technical scheme, by obtaining the mechanical parameters of the cable joint explosion-proof box and the electrical parameters of the cable joint, whether a water seepage event exists in the cable joint explosion-proof box or not can be comprehensively and accurately identified and early warned, and therefore safe and stable operation of a whole power system is effectively guaranteed.

Description

Technical Field

[0001] The present application belongs to the technical field of electric power facilities, and specifically relates to a water immersion prediction device, method and equipment for a cable joint explosion-proof box. Background Art

[0002] At present, the cable joint explosion-proof box plays an extremely critical role in the power system. Its core function is to provide all-round protection for the cable joints. Under ideal conditions, the cable joint explosion-proof box can effectively achieve key goals such as waterproof and dustproof, creating a relatively safe and reliable internal environment for the stable operation of the cable joint.

[0003] However, given that cables are widely distributed in various complex and changeable operating environments, they face severe challenges from many uncertain factors. For example, if the construction workers fail to strictly follow the standard operating procedures during the installation process, the cable joint explosion-proof box installation may be defective; or as time goes by, the seals will inevitably age, wear, or even break; or when the sealing structure of the cable joint explosion-proof box is damaged and loses its sealing efficiency when it encounters an unexpected impact from external forces, external moisture is very likely to break through the defense line and penetrate into the cable joint explosion-proof box, thereby posing a serious threat to the insulation performance and electrical safety of the cable joint, burying many safety hazards and affecting the normal and stable operation of the power system.

[0004] Therefore, how to identify the water seepage of the cable joint explosion-proof box and issue an early warning is a problem that people in this field need to solve urgently. Summary of the invention

[0005] The embodiments of the present application provide a water immersion prediction device, method and equipment for a cable joint explosion-proof box, the purpose of which is to comprehensively and accurately identify and warn whether there is a water seepage event in the cable joint explosion-proof box, thereby effectively ensuring the safe and stable operation of the entire power system.

[0006] In a first aspect, an embodiment of the present application provides a water immersion prediction device for a cable joint explosion-proof box, the device comprising:

[0007] A parameter acquisition module is used to obtain the mechanical parameters of the cable connector explosion-proof box and the electrical parameters of the cable connector;

[0008] An explosion-proof box detection module, used for identifying whether the cable connector explosion-proof box has structural integrity abnormalities according to the mechanical parameters;

[0009] A water seepage identification module, used to identify whether there is a water seepage event in the cable joint explosion-proof box according to the electrical parameters when it is identified that the cable joint explosion-proof box has abnormal structural integrity;

[0010] The warning generation module is used to generate water seepage warning information of the cable joint explosion-proof box when it is identified that there is a water seepage event in the cable joint explosion-proof box.

[0011] In a second aspect, an embodiment of the present application provides a method for predicting water flooding of a cable joint explosion-proof box, the method comprising:

[0012] The mechanical parameters of the cable joint explosion-proof box and the electrical parameters of the cable joint are obtained through the parameter acquisition module;

[0013] Identify whether the cable connector explosion-proof box has structural integrity abnormalities according to the mechanical parameters by using an explosion-proof box detection module;

[0014] When the water seepage identification module identifies that the cable joint explosion-proof box has structural integrity abnormalities, identifying whether there is a water seepage event in the cable joint explosion-proof box according to the electrical parameters;

[0015] When a water seepage event is identified in the cable joint explosion-proof box, the warning generation module generates water seepage warning information of the cable joint explosion-proof box.

[0016] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.

[0017] In the embodiment of the present application, the parameter acquisition module is used to acquire the mechanical parameters of the cable joint explosion-proof box and the electrical parameters of the cable joint; the explosion-proof box detection module is used to identify whether the cable joint explosion-proof box has structural integrity abnormalities according to the mechanical parameters; the water seepage identification module is used to identify whether there is a water seepage event in the cable joint explosion-proof box according to the electrical parameters when it is identified that the cable joint explosion-proof box has structural integrity abnormalities; the warning generation module is used to generate water seepage warning information of the cable joint explosion-proof box when it is identified that there is a water seepage event in the cable joint explosion-proof box. The above-mentioned water immersion prediction device for the cable joint explosion-proof box can comprehensively and accurately identify and warn whether there is a water seepage event in the cable joint explosion-proof box by acquiring the mechanical parameters of the cable joint explosion-proof box and the electrical parameters of the cable joint, thereby effectively ensuring the safe and stable operation of the entire power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural schematic diagram of a water immersion prediction device for a cable joint explosion-proof box provided in Example 1 of the present application;

[0019] Figure 22 is a schematic diagram of the structure of a water immersion prediction device for a cable joint explosion-proof box provided in Example 2 of the present application;

[0020] Figure 3 is a structural schematic diagram of a water immersion prediction device for a cable joint explosion-proof box provided in Example 3 of the present application;

[0021] Figure 4 is a structural schematic diagram of a water immersion prediction device for a cable joint explosion-proof box provided in Example 4 of the present application;

[0022] Figure 5 It is a flow chart of a method for predicting water immersion of a cable joint explosion-proof box provided in Embodiment 5 of the present application;

[0023] Figure 6 It is a structural diagram of an electronic device provided in Example 6 of the present application. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application clearer, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for the convenience of description, only the part related to the present application but not all the contents are shown in the accompanying drawings. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow chart describes each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of each operation can be rearranged. The process can be terminated when its operation is completed, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0026] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0027] In the following, in conjunction with the accompanying drawings, the water immersion prediction device, method and equipment for the cable joint explosion-proof box provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0028] Embodiment 1

[0029] Figure 1 Schematic diagram of the structure of the water flooding prediction device for the cable joint explosion-proof box provided in the first embodiment of the present application. Figure 1 As shown, the device comprises:

[0030] The parameter acquisition module 110 is used to acquire the mechanical parameters of the cable joint explosion-proof box and the electrical parameters of the cable joint;

[0031] An explosion-proof box detection module 120, used to identify whether the cable connector explosion-proof box has structural integrity abnormalities according to the mechanical parameters;

[0032] A water seepage identification module 130 is used to identify whether there is a water seepage event in the cable joint explosion-proof box according to the electrical parameters when it is identified that the cable joint explosion-proof box has structural integrity abnormality;

[0033] The warning generation module 140 is used to generate water seepage warning information of the cable joint explosion-proof box when it is identified that there is a water seepage event in the cable joint explosion-proof box.

[0034] This application is applicable to scenarios where cable joint explosion-proof boxes are installed at cable joints. Specifically, the identification of structural integrity anomalies, identification of water seepage events, and generation of water seepage warning information can be performed by intelligent terminal devices. Based on the generated water seepage warning information, the staff can promptly maintain the cable joint explosion-proof boxes where water seepage events occur to ensure the safe operation of the power system.

[0035] Based on the above usage scenarios, it can be understood that the executor of the present application can be a smart terminal device, such as a desktop computer, a laptop computer, a mobile phone, a tablet computer, and interactive multimedia, etc., and no excessive limitations are made here.

[0036] The parameter acquisition module 110 is used to acquire the mechanical parameters of the cable connector explosion-proof box and the electrical parameters of the cable connector.

[0037] A cable is a device used to transmit power or signals.

[0038] A cable joint is a component used to connect cables and cables, or cables and electrical equipment. The electrical parameters of a cable joint are a set of physical quantities used to describe the electrical performance characteristics of the cable joint, which may include capacitance parameters, leakage current parameters, and ground resistance parameters. The electrical parameters of a cable joint can be collected by corresponding professional electrical sensors.

[0039] The cable joint explosion-proof box is a device used to protect cable joints. It is mainly used in environments with explosion hazards, such as petrochemicals, underground coal mines, etc. The core function of the cable joint explosion-proof box is to prevent the electric sparks, arcs and possible high temperatures generated at the cable joints from causing explosions of combustible gases, dust, etc. in the surrounding environment. The mechanical parameters of the cable joint explosion-proof box can be a set of physical quantities used to describe the stress conditions of the cable joint explosion-proof box, which can include external pressure parameters and internal pressure parameters. The mechanical parameters of the cable joint explosion-proof box can be collected by corresponding professional mechanical sensors.

[0040] The explosion-proof box detection module 120 is used to identify whether the cable connector explosion-proof box has structural integrity abnormalities according to the mechanical parameters.

[0041] Structural integrity abnormality may refer to a situation where the structure of the cable joint explosion-proof box is in a state that does not meet normal design and safety operation requirements, such as a situation where the sealing of the cable joint explosion-proof box is damaged and there may be a water seepage incident.

[0042] The method of identifying whether the cable joint explosion-proof box has structural integrity abnormalities based on mechanical parameters can be used to determine whether the cable joint explosion-proof box has structural integrity abnormalities when the external pressure parameters are inconsistent with the internal pressure parameters.

[0043] The water seepage identification module 130 is used to identify whether there is a water seepage event in the cable joint explosion-proof box according to the electrical parameters when it is identified that the cable joint explosion-proof box has abnormal structural integrity.

[0044] The water seepage event in the cable connector explosion-proof box may refer to a situation in which water has seeped into the cable connector explosion-proof box.

[0045] The method of identifying whether there is a water seepage event in the cable joint explosion-proof box based on electrical parameters can be adopted to determine the presence of a water seepage event in the cable joint explosion-proof box when the capacitance parameter exceeds the preset capacitance threshold, determine the presence of a water seepage event in the cable joint explosion-proof box when the leakage current parameter is not zero, determine the presence of a water seepage event in the cable joint explosion-proof box when the grounding resistance parameter is less than the first grounding resistance threshold, and determine the presence of a water seepage event in the cable joint explosion-proof box when the grounding resistance parameter exceeds the second grounding resistance threshold.

[0046] The warning generation module 140 is used to generate water seepage warning information of the cable joint explosion-proof box when it is identified that there is a water seepage event in the cable joint explosion-proof box.

[0047] The water seepage warning information of the cable joint explosion-proof box can be used to warn the staff that there is a water seepage event in the cable joint explosion-proof box and maintenance processing is required. The specific content of the water seepage warning information of the cable joint explosion-proof box can include identification information and / or location information of the cable joint explosion-proof box where the water seepage event occurs.

[0048] The method of generating the water seepage warning information of the cable joint explosion-proof box can use the display device of the intelligent terminal device to pop up a warning window, and the specific content of the water seepage warning information of the cable joint explosion-proof box is displayed in the warning window.

[0049] In the example of the present application, the parameter acquisition module is used to obtain the mechanical parameters of the cable joint explosion-proof box and the electrical parameters of the cable joint; the explosion-proof box detection module is used to identify whether the cable joint explosion-proof box has structural integrity abnormalities according to the mechanical parameters; the water seepage identification module is used to identify whether there is a water seepage event in the cable joint explosion-proof box according to the electrical parameters when it is identified that the cable joint explosion-proof box has structural integrity abnormalities; the warning generation module is used to generate water seepage warning information of the cable joint explosion-proof box when it is identified that there is a water seepage event in the cable joint explosion-proof box. This technical solution, by acquiring the mechanical parameters of the cable joint explosion-proof box and the electrical parameters of the cable joint, can comprehensively and accurately identify and warn whether there is a water seepage event in the cable joint explosion-proof box, thereby effectively ensuring the safe and stable operation of the entire power system.

[0050] Embodiment 2

[0051] Figure 2This is a structural schematic diagram of the water immersion prediction device for the cable joint explosion-proof box provided in Example 2 of the present application. This solution has made better improvements on the basis of the above-mentioned embodiment, and the specific improvements are: the mechanical parameters include external pressure parameters and internal pressure parameters; accordingly, the explosion-proof box detection module is specifically used to: when the external pressure parameters are inconsistent with the internal pressure parameters, determine that the cable joint explosion-proof box has structural integrity abnormalities.

[0052] like Figure 2 As shown, the device comprises:

[0053] The parameter acquisition module 210 is used to acquire the mechanical parameters of the cable joint explosion-proof box and the electrical parameters of the cable joint;

[0054] An explosion-proof box detection module 220 is used to identify whether the cable connector explosion-proof box has structural integrity abnormalities according to the mechanical parameters;

[0055] A water seepage identification module 230 is used to identify whether there is a water seepage event in the cable joint explosion-proof box according to the electrical parameters when it is identified that the cable joint explosion-proof box has structural integrity abnormality;

[0056] The warning generation module 240 is used to generate water seepage warning information of the cable joint explosion-proof box when it is identified that there is a water seepage event in the cable joint explosion-proof box.

[0057] The explosion-proof box detection module 220 is specifically used for:

[0058] When the external pressure parameter is inconsistent with the internal pressure parameter, it is determined that the cable connector explosion-proof box has a structural integrity abnormality.

[0059] Pressure is a physical quantity that represents the effect of pressure. Pressure is defined as the pressure exerted on an object per unit area.

[0060] The external pressure parameter may refer to the pressure exerted on the outer surface of the cable joint explosion-proof box by the external environment of the cable joint explosion-proof box. The source of this pressure is diverse and may include atmospheric pressure, pressure of the surrounding medium (such as water, soil, etc.) and possible external mechanical forces. The external pressure parameter may be collected by a pressure sensor disposed on the outer surface of the cable joint explosion-proof box.

[0061] The internal pressure parameter may refer to the pressure exerted on the inner surface of the cable joint explosion-proof box by the internal environment of the cable joint explosion-proof box. The internal pressure parameter is mainly affected by factors such as gas generation, temperature change and sealing performance of the internal environment. The internal pressure parameter may be collected by a pressure sensor arranged on the inner surface of the cable joint explosion-proof box.

[0062] When the cable joint explosion-proof box is structurally intact and well sealed, the internal and external pressures should be balanced. This is because the cable joint explosion-proof box takes normal environmental factors into consideration during design and installation. For example, in a normal atmospheric environment, the inside and outside of the cable joint explosion-proof box are subject to the same atmospheric pressure.

[0063] When there is a problem with the sealing of the cable joint explosion-proof box, such as aging, damage of the sealing rubber ring or looseness of the sealing interface, internal gas leakage or external gas and liquid intrusion will occur, thereby breaking the internal and external pressure balance, that is, the external pressure parameters are inconsistent with the internal pressure parameters. Therefore, when the external pressure parameters are inconsistent with the internal pressure parameters, it can be determined that the cable joint explosion-proof box has structural integrity abnormalities.

[0064] In this technical solution, optionally, the explosion-proof box detection module is specifically used to:

[0065] Obtaining the ambient temperature parameters of the cable connector explosion-proof box;

[0066] Determining a calibration internal pressure parameter of the cable connector explosion-proof box according to the ambient temperature parameter;

[0067] In the case where the external pressure parameter is inconsistent with the calibrated internal pressure parameter, it is determined that the cable connector explosion-proof box has a structural integrity anomaly.

[0068] The ambient temperature parameter may refer to the temperature of the external environment where the cable connector explosion-proof box is located. The ambient temperature parameter may be acquired by a temperature sensor.

[0069] The calibration internal pressure parameter can be an internal pressure parameter that the cable joint explosion-proof box should have in theory after considering the effect of the ambient temperature on the thermal expansion and contraction of the internal gas of the cable joint explosion-proof box. The method of determining the calibration internal pressure parameter of the cable joint explosion-proof box according to the ambient temperature parameter can be adopted. According to the ideal gas state equation, it can be known that when the volume and the amount of substance remain unchanged, the ratio of the internal pressure parameter to the ambient temperature parameter is equal under any ambient temperature parameter. Therefore, the calibration internal pressure parameter can be equal to the product of the current internal pressure parameter and the reference indoor temperature divided by the current ambient temperature parameter.

[0070] The following is a sample code for determining the calibrated internal pressure parameter of a cable gland explosion proof box based on the ambient temperature parameter:

[0071] #Assume that this is a function for obtaining external pressure. Here, a simulated external pressure value is returned. In actual applications, real data needs to be obtained from the corresponding sensor. def get_external_pressure():

[0072] #Simulate the return of external pressure value in Pascal (Pa). Here, it is assumed to be 101325Pa (approximate standard atmospheric pressure). The actual value should be read from the sensor.

[0073] return 101325

[0074] #Assume that this is a function for obtaining internal pressure. Here, a simulated internal pressure value is returned. In actual applications, real data needs to be obtained from the corresponding sensor. def get_internal_pressure():

[0075] #Simulate and return the internal pressure value in Pascal (Pa). Here we assume the initial value, which should actually be read from the sensor.

[0076] return 101000

[0077] #Assume that this is a function for obtaining the ambient temperature. It obtains the temperature value from the temperature sensor in Kelvin (K). Here, we simulate returning a value and actually obtain it from the sensor. defget_environment_temperature():

[0078] #Simulate the return of the ambient temperature value, here it is assumed to be 300K (about 27°C), the actual value should be read from the sensor

[0079] return 300

[0080] # Reference indoor temperature (initial recording temperature), in Kelvin (K), here it is assumed to be 293K (about 20℃), the actual setting is based on the initial measurement

[0081] REFERENCE_TEMPERATURE = 293 # Calculate the calibration internal pressure parameters defcalculate_calibrated_internal_pressure (current_internal_pressure, current_temperature):

[0082] return(current_internal_pressure*REFERENCE_TEMPERATURE) / current_temperature

[0083] def check_box_integrity():

[0084] external_pressure=get_external_pressure()

[0085] internal_pressure=get_internal_pressure()

[0086] environment_temperature=get_environment_temperature()

[0087] calibrated_internal_pressure=calculate_calibrated_internal_pressure(internal_pressure,environment_temperature)

[0088] if external_pressure! =calibrated_internal_pressure:

[0089] print("The cable connector explosion-proof box has structural integrity abnormalities")

[0090] return True

[0091] print("The cable connector explosion-proof box has normal structural integrity")

[0092] return False

[0093] The benefit of this arrangement of the present scheme is that, by obtaining the ambient temperature parameters of the cable joint explosion-proof box and determining the calibrated internal pressure parameters of the cable joint explosion-proof box according to the ambient temperature parameters, the influence of the internal pressure changes caused by the common external factor interference of temperature fluctuation on the structural integrity identification of the cable joint explosion-proof box can be effectively eliminated, thereby improving the scientificity and accuracy of the identification.

[0094] The benefit of this arrangement of the present scheme is that by determining that the cable joint explosion-proof box has structural integrity abnormalities when the external pressure parameters are inconsistent with the internal pressure parameters, it is possible to accurately capture potential hidden dangers such as sealing failure, shell damage or material degradation in the cable joint explosion-proof box, thereby laying the foundation for identifying whether there is a water seepage event in the cable joint explosion-proof box, and then combining the electrical parameters for comprehensive identification to improve the accuracy of identifying water seepage events.

[0095] Embodiment 3

[0096] Figure 3It is a structural schematic diagram of the water immersion prediction device for the cable joint explosion-proof box provided in Example 3 of the present application. This solution has made better improvements on the basis of the above-mentioned embodiments, and the specific improvements are as follows: the electrical parameters include capacitance parameters and / or leakage current parameters; accordingly, the water seepage identification module is specifically used to: determine that there is a water seepage event in the cable joint explosion-proof box when it is identified that there is a structural integrity abnormality in the cable joint explosion-proof box, and the capacitance parameter exceeds a preset capacitance threshold; and / or, determine that there is a water seepage event in the cable joint explosion-proof box when it is identified that there is a structural integrity abnormality in the cable joint explosion-proof box, and the leakage current parameter is not zero.

[0097] like Figure 3 As shown, the device comprises:

[0098] The parameter acquisition module 310 is used to acquire the mechanical parameters of the cable joint explosion-proof box and the electrical parameters of the cable joint;

[0099] An explosion-proof box detection module 320 is used to identify whether the cable connector explosion-proof box has structural integrity abnormalities according to the mechanical parameters;

[0100] A water seepage identification module 330 is used to identify whether there is a water seepage event in the cable joint explosion-proof box according to the electrical parameters when it is identified that the cable joint explosion-proof box has structural integrity abnormality;

[0101] The warning generation module 340 is used to generate water seepage warning information of the cable joint explosion-proof box when it is identified that there is a water seepage event in the cable joint explosion-proof box.

[0102] The water seepage identification module 330 is specifically used for:

[0103] When it is identified that the cable joint explosion-proof box has structural integrity abnormality and the capacitance parameter exceeds a preset capacitance threshold, determining that a water seepage event occurs in the cable joint explosion-proof box;

[0104] and / or,

[0105] When it is identified that the cable joint explosion-proof box has structural integrity abnormality and the leakage current parameter is not zero, it is determined that a water seepage event occurs in the cable joint explosion-proof box.

[0106] Capacitance parameters can refer to the amount of charge stored under a given potential difference. The capacitance parameters of a cable joint are mainly related to the capacitance characteristics of the cable's insulation layer, electrodes, and surrounding media (such as air, possible water, etc.). Capacitance parameters can be measured using a specialized capacitance tester. Specifically, during actual measurement, the capacitance tester applies an AC voltage signal of known frequency and amplitude to the cable joint, and then measures the generated current signal. The capacitance parameters are calculated based on the frequency and amplitude of the AC voltage signal and the measured current signal.

[0107] The preset capacitance threshold may be a preset capacitance parameter lower limit indicating that there may be a water seepage event in the cable joint explosion-proof box. When there is a water seepage event in the cable joint explosion-proof box, since the dielectric constant of water is higher than that of air and other media, the dielectric constant of the entire system will increase. According to the capacitance formula, it can be known that when the plate area and spacing remain unchanged, the increase in dielectric constant can increase the capacitance value accordingly. Therefore, when the capacitance parameter exceeds the preset capacitance threshold, it may be caused by the water seepage event in the cable joint explosion-proof box.

[0108] The leakage current parameter can refer to the magnitude of the current flowing through the surface or inside of the insulating material. The leakage current parameter can be measured by a leakage current tester. When there is water seepage in the cable joint explosion-proof box, because water is a conductor, water will form a conductive channel on the surface or inside of the insulating material, increasing the leakage current and thus reducing the insulation performance of the insulating material. Therefore, when the leakage current parameter is not zero, it may be caused by water seepage in the cable joint explosion-proof box.

[0109] In this technical solution, optionally, the water seepage identification module is also used to:

[0110] determining a capacitance change rate according to the capacitance parameter;

[0111] Obtaining a capacitance equivalent spacing of the cable connector, and determining a proportionality coefficient according to the capacitance equivalent spacing;

[0112] Determine the water seepage speed of the cable joint explosion-proof box according to the capacitance change rate and the proportionality coefficient;

[0113] Accordingly, the warning generation module is specifically used for:

[0114] When it is identified that a water seepage event occurs in the cable joint explosion-proof box, water seepage warning information of the cable joint explosion-proof box is generated according to the water seepage speed.

[0115] The capacitance change rate may refer to the change value of the capacitance parameter in a unit time. The capacitance change rate may be determined by obtaining the capacitance parameter according to a preset period, calculating the difference of the capacitance parameters obtained in two adjacent preset periods, and dividing the difference by the preset period to obtain the capacitance change rate.

[0116] Since the cable connector structure is relatively complex, the electric field distribution inside it is not as simple and uniform as that of an ideal flat plate capacitor. The equivalent capacitance spacing can refer to the distance between the two poles when the actual cable connector is regarded as an equivalent capacitor. The equivalent capacitance spacing can be obtained by referring to the product manual or technical manual of the cable connector.

[0117] The water seepage rate of the cable joint explosion-proof box may refer to the volume of water that seeps into the cable joint explosion-proof box per unit time.

[0118] The proportionality coefficient may be a coefficient representing the numerical relationship between the capacitance change rate and the water seepage speed of the cable joint explosion-proof box. According to the method of determining the proportionality coefficient by the capacitance equivalent spacing, the proportionality coefficient may be obtained by dividing the dielectric constant of water by the capacitance equivalent spacing.

[0119] The water seepage speed of the cable joint explosion-proof box can be determined according to the capacitance change rate and the proportionality coefficient. The capacitance change rate can be divided by the proportionality coefficient to obtain the water seepage speed of the cable joint explosion-proof box.

[0120] The method of generating the water seepage warning information of the cable joint explosion-proof box may be to use a display device of the intelligent terminal device to pop up a warning window, and the warning window displays the specific content of the water seepage warning information of the cable joint explosion-proof box. The specific content of the water seepage warning information of the cable joint explosion-proof box may include the identification information and / or location information of the cable joint explosion-proof box where the water seepage event occurs, as well as the water seepage speed, etc.

[0121] Here is a sample code to determine the water infiltration rate of a cable gland explosion proof box:

[0122] #Determine the proportional coefficient based on the equivalent distance of the capacitor defcalculate_proportional_coefficient(equivalent_distance):

[0123] return EPSILON_WATER / equivalent_distance

[0124] #Determine the water infiltration speed of the cable connector explosion-proof box based on the capacitance change rate and proportional coefficient defcalculate_water_infiltration_speed(capacitance_change_rate,proportional_coefficient):

[0125] return capacitance_change_rate / proportional_coefficient

[0126] if__name__=="__main__":

[0127] capacitance_change_rate=calculate_capacitance_change_rate()

[0128] equivalent_distance=get_equivalent_distance()

[0129] proportional_coefficient=calculate_proportional_coefficient(equivalent_distance)

[0130] water_infiltration_speed=calculate_water_infiltration_speed(capacitance_change_rate,proportional_coefficient)

[0131] print(f"The water infiltration speed of the cable connector explosion-proof box is: {water_infiltration_speed}")

[0132] The benefit of this scheme is that by determining the proportionality coefficient according to the equivalent spacing of capacitance, and determining the water seepage rate of the cable joint explosion-proof box according to the capacitance change rate and the proportionality coefficient, the water seepage of the cable joint explosion-proof box can be quantitatively evaluated, which is convenient for the staff to reasonably plan the maintenance time and strategy accordingly.

[0133] The advantage of this setting of the present scheme is that the capacitance parameter and the leakage current parameter are extremely sensitive to water. By determining that there is a water seepage event in the cable connector explosion-proof box when the capacitance parameter exceeds the preset capacitance threshold or the leakage current parameter is not zero, it is possible to quickly and effectively identify whether there is a water seepage event in the cable connector explosion-proof box.

[0134] Embodiment 4

[0135] Figure 4 It is a structural schematic diagram of the water immersion prediction device for the cable joint explosion-proof box provided in the fourth embodiment of the present application. This scheme has made better improvements on the basis of the above embodiments, and the specific improvements are: the electrical parameters also include grounding resistance parameters; accordingly, the water seepage identification module is also used to: determine that there is a water seepage event in the cable joint explosion-proof box when it is identified that the cable joint explosion-proof box has a structural integrity abnormality and the grounding resistance parameter is less than the first grounding resistance threshold; or, determine that there is a water seepage event in the cable joint explosion-proof box when it is identified that there is a structural integrity abnormality in the cable joint explosion-proof box and the grounding resistance parameter exceeds the second grounding resistance threshold.

[0136] like Figure 4 As shown, the device comprises:

[0137] The parameter acquisition module 410 is used to acquire the mechanical parameters of the cable joint explosion-proof box and the electrical parameters of the cable joint;

[0138] An explosion-proof box detection module 420 is used to identify whether the cable connector explosion-proof box has structural integrity abnormalities according to the mechanical parameters;

[0139] A water seepage identification module 430 is used to identify whether there is a water seepage event in the cable joint explosion-proof box according to the electrical parameters when it is identified that the cable joint explosion-proof box has structural integrity abnormality;

[0140] The warning generation module 440 is used to generate water seepage warning information of the cable joint explosion-proof box when it is identified that there is a water seepage event in the cable joint explosion-proof box.

[0141] The water seepage identification module 430 is specifically used for:

[0142] When it is identified that the cable joint explosion-proof box has structural integrity abnormality and the capacitance parameter exceeds a preset capacitance threshold, determining that a water seepage event occurs in the cable joint explosion-proof box;

[0143] and / or,

[0144] When it is identified that the cable joint explosion-proof box has structural integrity abnormality and the leakage current parameter is not zero, it is determined that a water seepage event occurs in the cable joint explosion-proof box.

[0145] The water seepage identification module 430 is further used for:

[0146] When it is identified that the cable joint explosion-proof box has a structural integrity abnormality and the grounding resistance parameter is less than a first grounding resistance threshold, determining that a water seepage event occurs in the cable joint explosion-proof box;

[0147] or,

[0148] When it is identified that the cable joint explosion-proof box has structural integrity abnormality and the grounding resistance parameter exceeds a second grounding resistance threshold, it is determined that a water seepage event occurs in the cable joint explosion-proof box.

[0149] The grounding resistance parameter refers to the resistance encountered by the current flowing from the grounding device into the earth and then flowing through the earth to another grounding body or spreading to a distant place. The grounding resistance parameter can be collected by a grounding resistance tester. Specifically, the grounding resistance tester applies an alternating current of known frequency and amplitude to the grounding electrode, then measures the potential difference between the grounding electrode and the auxiliary electrode, and finally calculates the grounding resistance parameter according to Ohm's law.

[0150] The first grounding resistance threshold may be a pre-set upper limit of the grounding resistance parameter indicating that there may be a water seepage event in the cable joint explosion-proof box. When the grounding resistance parameter is less than the first grounding resistance threshold, it may be because the water seepage improves the grounding path, for example, the infiltrated water reduces the contact resistance between the grounding electrode and the soil, or forms a new conductive path inside the grounding system, making the grounding resistance parameter smaller.

[0151] The second grounding resistance threshold may be a preset lower limit of the grounding resistance parameter indicating that there may be water seepage in the cable joint explosion-proof box. When the grounding resistance parameter exceeds the second grounding resistance threshold, it may be due to water seepage causing the grounding system to be damaged or corroded. For example, the infiltrated water contains corrosive substances that corrode the grounding electrode or the connection part, increasing the grounding resistance.

[0152] In this technical solution, optionally, the warning generation module is specifically used to:

[0153] When the grounding resistance parameter exceeds a second grounding resistance threshold, a warning message of corrosive water seepage of the cable joint explosion-proof box is generated.

[0154] The warning information of the corrosive water seepage of the cable joint explosion-proof box may be used to warn the staff that the cable joint explosion-proof box has a corrosive water seepage event and needs to be maintained immediately.

[0155] If the grounding resistance parameter exceeds the second grounding resistance threshold, it may indicate that the liquid that has penetrated into the cable joint explosion-proof box is corrosive, which may cause serious corrosion damage to internal metal parts and electrical connections, a sharp drop in insulation performance, and an urgent risk of causing major safety accidents such as short circuits, leakage, and even fire and explosion.

[0156] The benefit of this arrangement of the scheme is that, by generating a warning message of corrosive water seepage in the cable joint explosion-proof box when the grounding resistance parameter exceeds the second grounding resistance threshold, the staff can be aware of serious corrosion hazards in time, prompting them to quickly initiate the emergency treatment process, accurately locate the fault point and implement effective isolation and repair operations.

[0157] The advantage of such a setting of the present scheme is that by determining that there is a water seepage event in the cable joint explosion-proof box when the grounding resistance parameter is less than the first grounding resistance threshold value, or the grounding resistance parameter exceeds the second grounding resistance threshold value, it is possible to quickly and effectively identify whether there is a water seepage event in the cable joint explosion-proof box.

[0158] Embodiment 5

[0159] Figure 5 1 is a flow chart of a method for predicting water immersion in a cable joint explosion-proof box provided in Embodiment 5 of the present application. Figure 5 As shown, the specific steps include:

[0160] S501, obtaining mechanical parameters of the cable connector explosion-proof box and electrical parameters of the cable connector through a parameter acquisition module;

[0161] S502, identifying whether the cable connector explosion-proof box has structural integrity abnormalities according to the mechanical parameters through an explosion-proof box detection module;

[0162] S503, when the water seepage identification module identifies that the cable joint explosion-proof box has structural integrity abnormality, identifying whether there is a water seepage event in the cable joint explosion-proof box according to the electrical parameters;

[0163] S504: When a water seepage event is identified in the cable joint explosion-proof box, a warning generation module generates water seepage warning information of the cable joint explosion-proof box.

[0164] In the embodiment of the present application, the mechanical parameters of the cable joint explosion-proof box and the electrical parameters of the cable joint are obtained through the parameter acquisition module; the explosion-proof box detection module identifies whether the cable joint explosion-proof box has structural integrity abnormalities according to the mechanical parameters; the water seepage identification module identifies whether there is a water seepage event in the cable joint explosion-proof box according to the electrical parameters when the cable joint explosion-proof box is identified as having structural integrity abnormalities; the warning generation module generates water seepage warning information of the cable joint explosion-proof box when the cable joint explosion-proof box is identified as having a water seepage event. The above-mentioned water immersion prediction method for the cable joint explosion-proof box can comprehensively and accurately identify and warn whether there is a water seepage event in the cable joint explosion-proof box by acquiring the mechanical parameters of the cable joint explosion-proof box and the electrical parameters of the cable joint, thereby effectively ensuring the safe and stable operation of the entire power system.

[0165] The water immersion prediction method for the cable joint explosion-proof box provided in the embodiment of the present application corresponds to the water immersion prediction device for the cable joint explosion-proof box provided in the above embodiment, and has the same functional modules and beneficial effects. To avoid repetition, they will not be described here.

[0166] Embodiment 6

[0167] like Figure 6 As shown, an embodiment of the present application also provides an electronic device 600, including a processor 601, a memory 602, and a program or instruction stored in the memory 602 and executable on the processor 601. When the program or instruction is executed by the processor 601, each process of the water immersion prediction device embodiment of the above-mentioned cable connector explosion-proof box is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0168] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0169] Embodiment 7

[0170] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the water immersion prediction device embodiment of the above-mentioned cable connector explosion-proof box is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0171] The processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0172] Embodiment 8

[0173] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the water immersion prediction device embodiment of the above-mentioned cable connector explosion-proof box, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0174] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0175] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0176] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0177] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0178] The above are only preferred embodiments of the present application and the technical principles used. The present application is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions that can be made by those skilled in the art will not deviate from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A water flooding prediction device for a cable joint explosion-proof box, characterized in that: The device comprises: A parameter acquisition module is used to obtain the mechanical parameters of the cable connector explosion-proof box and the electrical parameters of the cable connector; An explosion-proof box detection module, used for identifying whether the cable connector explosion-proof box has structural integrity abnormalities according to the mechanical parameters; A water seepage identification module, used to identify whether there is a water seepage event in the cable joint explosion-proof box according to the electrical parameters when it is identified that the cable joint explosion-proof box has abnormal structural integrity; The warning generation module is used to generate water seepage warning information of the cable joint explosion-proof box when it is identified that there is a water seepage event in the cable joint explosion-proof box.

2. The water flooding prediction device for the cable joint explosion-proof box according to claim 1 is characterized in that: The mechanical parameters include external pressure parameters and internal pressure parameters; Accordingly, the explosion-proof box detection module is specifically used for: When the external pressure parameter is inconsistent with the internal pressure parameter, it is determined that the cable connector explosion-proof box has a structural integrity abnormality.

3. The water flooding prediction device for the cable joint explosion-proof box according to claim 2 is characterized in that: The explosion-proof box detection module is specifically used for: Obtaining the ambient temperature parameters of the cable connector explosion-proof box; Determining a calibration internal pressure parameter of the cable connector explosion-proof box according to the ambient temperature parameter; In the case where the external pressure parameter is inconsistent with the calibrated internal pressure parameter, it is determined that the cable connector explosion-proof box has a structural integrity anomaly.

4. The water flooding prediction device for the cable joint explosion-proof box according to claim 1 is characterized in that: The electrical parameters include capacitance parameters and / or leakage current parameters; Accordingly, the water seepage identification module is specifically used for: When it is identified that the cable joint explosion-proof box has structural integrity abnormality and the capacitance parameter exceeds a preset capacitance threshold, determining that a water seepage event occurs in the cable joint explosion-proof box; and / or, When it is identified that the cable joint explosion-proof box has structural integrity abnormality and the leakage current parameter is not zero, it is determined that a water seepage event occurs in the cable joint explosion-proof box.

5. The water flooding prediction device for the cable joint explosion-proof box according to claim 4 is characterized in that: The water seepage identification module is also used for: Determining a capacitance change rate according to the capacitance parameter; Obtaining a capacitance equivalent spacing of the cable connector, and determining a proportionality coefficient according to the capacitance equivalent spacing; Determine the water seepage speed of the cable joint explosion-proof box according to the capacitance change rate and the proportionality coefficient; Accordingly, the warning generation module is specifically used for: When it is identified that a water seepage event occurs in the cable joint explosion-proof box, water seepage warning information of the cable joint explosion-proof box is generated according to the water seepage speed.

6. The water flooding prediction device for the cable joint explosion-proof box according to claim 4, characterized in that: The electrical parameters also include ground resistance parameters; Correspondingly, the water seepage identification module is also used for: When it is identified that the cable joint explosion-proof box has a structural integrity abnormality and the grounding resistance parameter is less than a first grounding resistance threshold, determining that a water seepage event occurs in the cable joint explosion-proof box; or, When it is identified that the cable joint explosion-proof box has structural integrity abnormality and the grounding resistance parameter exceeds a second grounding resistance threshold, it is determined that a water seepage event occurs in the cable joint explosion-proof box.

7. The water flooding prediction device for the cable joint explosion-proof box according to claim 6 is characterized in that: The warning generation module is specifically used for: When the grounding resistance parameter exceeds a second grounding resistance threshold, a warning message of corrosive water seepage of the cable joint explosion-proof box is generated.

8. A method for predicting water flooding of a cable joint explosion-proof box, characterized in that: The method comprises: The mechanical parameters of the cable joint explosion-proof box and the electrical parameters of the cable joint are obtained through the parameter acquisition module; Identify whether the cable connector explosion-proof box has structural integrity abnormalities according to the mechanical parameters by using an explosion-proof box detection module; When the water seepage identification module identifies that the cable joint explosion-proof box has structural integrity abnormalities, identifying whether there is a water seepage event in the cable joint explosion-proof box according to the electrical parameters; When a water seepage event is identified in the cable joint explosion-proof box, the warning generation module generates water seepage warning information of the cable joint explosion-proof box.

9. The method for predicting water flooding of a cable joint explosion-proof box according to claim 8, characterized in that: The mechanical parameters include external pressure parameters and internal pressure parameters; Accordingly, identifying whether the cable connector explosion-proof box has structural integrity abnormalities according to the mechanical parameters by the explosion-proof box detection module includes: When the external pressure parameter is inconsistent with the internal pressure parameter, it is determined that the cable connector explosion-proof box has a structural integrity abnormality.

10. An electronic device, characterized in that: It comprises a processor, a memory and a program or instruction stored in the memory and executable on the processor, wherein when the program or instruction is executed by the processor, the steps of the water immersion prediction method for the cable joint explosion-proof box as described in any one of claims 8 to 9 are implemented.

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