A method and device for controlling the action protection of a power supply line

Abstract

The present invention relates to an action protection control method and device for a power supply line, and relates to the field of power equipment, which includes obtaining a current signal; determining a residual current according to the current signal; when the residual current falls into a preset risk interval, determining a line number according to the current signal; determining a switch number according to the line number; controlling a preset line switch to disconnect according to the switch number, and generating fault report information according to the residual current and the line number; and controlling a preset sending device to send information to a preset management terminal according to the fault report information. The present application has the effect of improving the reliability, safety and stability of residential electricity use, and can pre-analyze faults in the power system.

Description

Technical Field

[0001] The present invention relates to the field of electric power equipment, and in particular to an action protection control method and device for a power supply line. Background Art

[0002] A current operated protective device is a protective device that monitors the current in a circuit and automatically cuts off the circuit when the current in the circuit exceeds a set value to prevent the equipment from being damaged due to overload or short circuit.

[0003] At present, the power supply lines in the distribution substation area are generally tree-shaped and radiate, the power users are relatively scattered, and there are many potential fault points in the substation area. In addition, the power supply path of the substation area is relatively long. The theoretical requirement of the radiation standard is not more than 500m, but in fact, the power supply radius of many substations is greater than 500m, and the scope of responsibility of the substation manager is relatively large. In addition, with the advancement of the construction of new power systems with new energy as the main body, more and more distributed photovoltaics are connected to rural power grids and increase year by year, which brings huge challenges and far-reaching impacts to traditional rural power grids. When a substation area only has total protection, no matter which part of the line fails, the total protection will trip the protection, causing the entire substation area to be completely blacked out.

[0004] Since the line coverage area of ​​the substation is large and the line has many radiating branches, even if the emergency repair personnel arrive at the scene as soon as possible, it will take a lot of time and energy to investigate and deal with the fault points, which greatly reduces the reliability, safety and stability of residents' electricity use. Summary of the invention

[0005] In order to improve the reliability, safety and stability of residential electricity use and to be able to pre-analyze power system faults, the present invention provides an action protection control method and device for a power supply line.

[0006] In a first aspect, the present invention provides an action protection control method for a power supply line, which adopts the following technical solution:

[0007] A method for controlling an action protection of a power supply line, comprising:

[0008] Acquire current signal;

[0009] determining the residual current based on the current signal;

[0010] When the residual current falls into the preset risk interval, the line number is determined according to the current signal;

[0011] Determine the switch number based on the line number;

[0012] Control the preset line switch to disconnect according to the switch number, and generate fault report information according to the residual current and line number;

[0013] According to the fault report information, a preset sending device is controlled to send information to a preset management terminal.

[0014] By adopting the above technical scheme, the size of the residual current is judged according to the current size in each phase line in the circuit system, so that when the residual current is too large, the line switch is controlled to be disconnected to reduce damage to the power equipment on the line or injury to personnel, and the fault information is sent to the management terminal through the sending device to facilitate maintenance personnel to quickly judge the fault situation and perform repairs, thereby improving the reliability, safety and stability of residential electricity use.

[0015] Optionally, a reclosing method is also included, and the reclosing method includes:

[0016] Obtaining the line voltage of the power system;

[0017] When the line voltage does not fall within the preset working voltage range, the preset protection device is controlled to disconnect the preset line switch and the circuit-breaking voltage of the power system is obtained;

[0018] When the circuit breaker voltage falls into the preset closing interval, the preset reclosing device is controlled to close the circuit breaker and the closing voltage of the power system is obtained;

[0019] When the closing voltage does not fall within the preset working voltage range, the preset reclosing device is controlled to disconnect the line switch, and fault report information is generated according to the closing voltage.

[0020] By adopting the above technical solution, when the line voltage is overvoltage or undervoltage, the line switch is controlled to disconnect to reduce damage to the power equipment on the line, and the circuit breaker is attempted to be closed after the voltage fluctuation in the line has subsided, thereby reducing power outages in the line. At the same time, when the line voltage is still overvoltage or undervoltage after reclosing, fault report information is generated and the fault information is sent to the management terminal through the sending device to facilitate maintenance personnel to quickly determine the fault situation and perform repairs.

[0021] Optionally, a temperature protection method is also included, and the temperature protection method includes:

[0022] Get terminal temperature;

[0023] When the terminal temperature exceeds the preset circuit operating range, the sensing number is determined according to the terminal temperature;

[0024] Match the installation location from the preset induction installation database according to the induction number;

[0025] Determine the line number according to the installation location;

[0026] Determine the switch number based on the line number;

[0027] The preset line switch is controlled to disconnect according to the switch number, and fault report information is generated according to the terminal temperature.

[0028] By adopting the above technical solution, when the terminal temperature is too high, the circuit switch is controlled to disconnect to reduce the possibility of circuit breaker burning out. At the same time, fault report information is generated and sent to the management terminal through the sending device to facilitate maintenance personnel to quickly determine the fault situation and perform repairs.

[0029] Optionally, a high temperature treatment method is also included, and the high temperature treatment method includes:

[0030] When the terminal temperature exceeds the preset circuit operating range, the shooting control parameters are determined according to the installation position;

[0031] Acquire the terminal image according to the shooting control parameters;

[0032] Judging whether there are aging features at the terminal based on the terminal image;

[0033] When an aging feature exists at the terminal, determining the degree of aging based on the aging feature;

[0034] Generate aging warning information according to the aging degree;

[0035] According to the aging warning information, a preset sending device is controlled to send the information to a preset management terminal.

[0036] By adopting the above technical solution, when the terminal ages, it is easy to cause the resistance between the line and the circuit breaker to increase, thereby causing the thermal power of the terminal to increase, and then causing the terminal temperature to be too high. The aging of the terminal can be judged by the appearance of the terminal, and when the terminal is severely aged, the aging warning information is sent to the management terminal through the sending device to facilitate maintenance personnel to carry out maintenance in time.

[0037] Optionally, the high temperature treatment method further comprises:

[0038] When the aging degree falls into the preset replacement interval, the terminal position is determined according to the terminal image;

[0039] Determine the injection stroke according to the terminal position;

[0040] According to the injection stroke, the preset injection device is controlled to inject the preset conductive medium into the terminal, and the loosening stroke is determined according to the terminal position;

[0041] Control the preset loosening device according to the loosening stroke to take out the terminal, and determine the filling stroke according to the terminal position;

[0042] The preset injection device is controlled according to the filling stroke to inject the preset conductive medium into the terminal installation port.

[0043] By adopting the above technical solution, when the terminal is too aged, it is easy to cause the resistance between the line and the circuit breaker to be too large, which will cause the circuit breaker to fail to work normally. At this time, the aged terminal is pulled out, and the line and circuit breaker are connected and fixed through a conductive medium, thereby reducing the situation where the terminal aging causes power system failures.

[0044] Optionally, the high temperature treatment method further comprises:

[0045] When the aging degree does not fall within the preset replacement interval, determine whether the terminal is loose based on the terminal image;

[0046] When the terminal is loose, determine the terminal model based on the terminal image;

[0047] Determine the terminal height based on the terminal image;

[0048] Determine the number of loosening turns based on the terminal height and terminal model;

[0049] Determine the locking stroke according to the terminal position;

[0050] The preset loosening device is controlled according to the locking stroke to lock the terminal according to the number of loosening turns.

[0051] By adopting the above technical solution, when the terminal is loose, it is easy to cause poor contact between the circuit and the circuit breaker, thereby causing the resistance between the circuit and the circuit breaker to increase, and then causing the terminal temperature to be too high. The looseness of the terminal can be judged by the appearance of the terminal, and the terminal can be locked by the loosening device when the terminal is loose.

[0052] Optionally, a heat dissipation method is also included, and the heat dissipation method includes:

[0053] When the terminal is not loose, obtain the ambient temperature;

[0054] Calculate the difference between the terminal temperature and the ambient temperature and define it as the temperature difference;

[0055] When the temperature difference exceeds the preset high temperature range, the blowing control parameters are determined according to the terminal position and the temperature difference;

[0056] The preset blowing device is controlled to blow air toward the terminal according to the blowing control parameters.

[0057] By adopting the above technical solution, when the air circulation in the space where the circuit breaker is located is poor, it is easy to cause heat accumulation at the terminal, resulting in excessive terminal temperature. The air exchange rate at the terminal is increased by the blowing device, thereby reducing the temperature at the terminal, thereby reducing the circuit breaker failure.

[0058] Optionally, the heat dissipation method further includes:

[0059] When the temperature difference exceeds the preset high temperature range, the clamping stroke is determined according to the terminal position;

[0060] Controlling a preset clamping device according to a clamping stroke to clamp a preset heat conducting device to a terminal position, and determining a heat conducting stroke according to the terminal position;

[0061] Controlling a preset injection device according to the heat conduction stroke to inject a preset heat conduction medium between the terminal and the heat conduction device to connect the terminal and the heat conduction device;

[0062] The preset clamping device is controlled to release the clamping of the heat conducting device and retract.

[0063] By adopting the above technical solution, when the contact area between the terminal and the outside world is small, it is easy to cause low heat dissipation efficiency at the terminal. The temperature of the terminal is exported through the heat conducting device, and the heat is dissipated through the larger contact area between the heat conducting device and the air to improve the heat dissipation efficiency at the terminal.

[0064] Optionally, the method for obtaining the blowing control parameter includes: V=(h×A×∆T) / (c×ρ×S×T);

[0065] V is the required fan speed;

[0066] h is the convective heat transfer coefficient;

[0067] A is the surface area of ​​the terminal in contact with the air;

[0068] ∆T is the temperature difference;

[0069] c is the specific heat capacity of air;

[0070] ρ is the density of air;

[0071] S is the cross-sectional area of ​​the air outlet of the blowing device;

[0072] T is the temperature difference before and after the air passes through the terminal.

[0073] In a second aspect, the present application provides an action protection control device for a power supply line, which adopts the following technical solution:

[0074] A motion protection control device for a power supply line comprises a memory and a processor. The memory stores a computer program that can be loaded by the processor and execute any of the above-mentioned motion protection control methods for a power supply line.

[0075] By adopting the above technical scheme, the size of the residual current is judged according to the current size in each phase line in the circuit system, so that when the residual current is too large, the line switch is controlled to be disconnected to reduce damage to the power equipment on the line or injury to personnel, and the fault information is sent to the management terminal through the sending device to facilitate maintenance personnel to quickly judge the fault situation and perform repairs, thereby improving the reliability, safety and stability of residential electricity use.

[0076] In summary, the present application includes at least one of the following beneficial technical effects:

[0077] 1. Determine the size of the residual current according to the current size of each phase line in the circuit system, so as to control the line switch to disconnect when the residual current is too large to reduce the damage to the power equipment on the line or the injury to personnel, and send the fault information to the management terminal through the sending device to facilitate the maintenance personnel to quickly determine the fault situation and carry out maintenance, thereby improving the reliability, safety and stability of residential electricity use;

[0078] 2. When the line voltage is overvoltage or undervoltage, the line switch is controlled to disconnect to reduce the damage to the power equipment on the line, and the circuit breaker is tried to close after the voltage fluctuation in the line has subsided, thereby reducing the power outage of the line. At the same time, if the line voltage is still overvoltage or undervoltage after reclosing, a fault report information is generated and sent to the management terminal through the sending device to facilitate maintenance personnel to quickly determine the fault situation and carry out maintenance;

[0079] 3. When the terminal temperature is too high, the circuit breaker is controlled to be disconnected to reduce the possibility of circuit breaker burning out. At the same time, fault report information is generated and sent to the management terminal through the sending device to facilitate maintenance personnel to quickly determine the fault situation and perform maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] Figure 1 It is a flow chart of an action protection control method for a power supply line;

[0081] Figure 2 It is a flow chart of the reclosing method;

[0082] Figure 3 It is a flow chart of the temperature protection method;

[0083] Figure 4 It is the process of high temperature treatment method Figure 1 ;

[0084] Figure 5 It is the process of high temperature treatment method Figure 2 ;

[0085] Figure 6 It is the process of high temperature treatment method Figure 3 ;

[0086] Figure 7 The process of heat dissipation method Figure 1 ;

[0087] Figure 8 The process of heat dissipation method Figure 2 ;

[0088] Fig. 9 It is a flow chart of the method of fixing the protective device. DETAILED DESCRIPTION

[0089] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and 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.

[0090] The embodiments of the present application disclose a method and device for controlling action protection of a power supply line. The present invention utilizes modern information technologies such as mobile Internet and artificial intelligence to realize the interconnection of all things and human-computer interaction in the low-voltage power distribution link, and has the characteristics of comprehensive state perception, efficient information processing, and convenient and flexible application.

[0091] Reference Figure 1 , an action protection control method for a power supply line, comprising:

[0092] Step 100: Acquire a current signal.

[0093] The current signal refers to the current parameter signal of each phase circuit in the power system. The current signal can be obtained through the current transformer pre-set on each phase circuit and the zero-sequence circuit. The method for obtaining the current signal is selected by the staff according to the actual situation and will not be elaborated here.

[0094] Step 101: Determine the residual current according to the current signal.

[0095] Residual current refers to the current value of the current that does not flow through the normal channel in the circuit. The residual current can be calculated based on the current signal through fast Fourier transform. The calculation method of the residual current is common knowledge among people in this field and will not be described here.

[0096] Step 102: When the residual current falls into a preset risk interval, the line number is determined according to the current signal.

[0097] The risk interval refers to a pre-set residual current value interval that is prone to accidents. The risk interval is selected by the staff according to the actual situation and will not be elaborated here. The residual current falling into the risk interval means that the residual current is too large at this time. The line number refers to the pre-set number used to distinguish the lines in the power system. Each line number corresponds to a line one by one. The line number can first determine the current transformer that detects excessive residual current based on the current signal, and then determine the line number with excessive residual current based on the current transformer. The setting method and determination method of the line number are selected by the staff according to the actual situation and will not be elaborated here.

[0098] Step 103: Determine the switch number according to the line number.

[0099] The switch number refers to the number of the switch set in advance to distinguish the path status between the control circuit and the power supply. Each switch number corresponds to a switch one by one. The switch number can be obtained from the switch database. The switch database refers to a database that records the circuit number and the switch number used to control the conduction status of the corresponding circuit.

[0100] Step 104: Control the preset line switch to be disconnected according to the switch number, and generate fault report information according to the residual current and the line number.

[0101] Fault report information refers to a collection of information used to notify staff of fault conditions in the power system. The fault report information can be obtained through a fault report generation model, which refers to a neural network model obtained in advance through sample training.

[0102] Step 105: Control a preset sending device to send information to a preset management terminal according to the fault report information.

[0103] The management terminal refers to the terminal equipment used to display the working conditions of the power system in each area to facilitate the staff to manage the power system. The management terminal is selected by the staff according to the actual situation and will not be described in detail here. The sending device refers to the communication module preset in the power system and used to send the fault report information to the management terminal of the substation. The sending device can use HPLC / RF-Mesh dual-mode communication to send it to the intelligent fusion terminal, and the intelligent fusion terminal then sends the signal to the management terminal through the 4G module. The sending device is selected by the staff according to the actual situation and will not be described in detail here.

[0104] When the residual current in the power system is too large, the corresponding line switch is first controlled to disconnect the power supply to the corresponding line to reduce equipment damage or personnel injury, and then the fault report information is sent to the management terminal through the sending device to facilitate the staff to understand the fault situation, thereby improving the efficiency of maintenance.

[0105] Reference Figure 2, the reclosing method comprises the following steps:

[0106] Step 200: Obtain the line voltage of the power system.

[0107] Line voltage refers to the voltage value of each phase circuit in the power system. The line voltage can be obtained through a voltmeter. The method for obtaining the line voltage is selected by the staff based on actual conditions and will not be elaborated here.

[0108] Step 201: When the line voltage does not fall within a preset working voltage range, a preset protection device is controlled to disconnect a preset line switch, and a circuit breaker voltage of the power system is obtained.

[0109] A protection device refers to a device used to protect the power system. A circuit breaker is generally used as a protection device. In this embodiment, a circuit breaker is used as an example. The working voltage range refers to the voltage value range required for the normal operation of the power system. The working voltage range is selected by the staff according to the actual situation and will not be described here. If the line voltage does not fall within the working voltage range, it means that the line voltage is undervoltage or overvoltage at this time, which may easily cause equipment damage or personal injury. At this time, the power supply of the line is disconnected by the protection device to reduce the occurrence of accidents.

[0110] The circuit-breaking voltage refers to the voltage value in the line after the protection device disconnects the line switch. The circuit-breaking voltage can be obtained through a voltmeter. The method for obtaining the circuit-breaking voltage is selected by the staff based on actual conditions and will not be elaborated here.

[0111] Step 202: When the circuit breaker voltage falls into a preset closing interval, a preset reclosing device is controlled to close the line switch, and a closing voltage of the power system is obtained.

[0112] The reclosing device is a device used to restore power to the power system after a transient power failure. The reclosing device is selected by the staff according to the actual situation and will not be described in detail here. The closing interval refers to the voltage value interval that should exist in the line after the line switch is disconnected. The closing interval is selected by the staff according to the actual situation and will not be described in detail here. When the circuit breaker voltage falls into the closing interval, it means that the voltage fluctuation in the line tends to be stable and there is no residual voltage in the line. At this time, the line switch can be reclosed by the reclosing device to restore the power supply of the line.

[0113] The closing voltage refers to the voltage value in the line after the line switch is reclosed by the reclosing device. The closing voltage can be obtained through a voltmeter. The method for obtaining the closing voltage is selected by the staff based on actual conditions and will not be elaborated here.

[0114] Step 203: When the closing voltage does not fall within the preset working voltage range, the preset reclosing device is controlled to disconnect the line switch, and fault report information is generated according to the closing voltage.

[0115] The fact that the closing voltage does not fall within the working voltage range indicates that the voltage in the line is still in an undervoltage or overvoltage state, that is, the power failure is not instantaneous. At this time, it is necessary to generate a fault report information to show the fault situation to the staff, so as to repair the power failure in time and restore power supply to the power system.

[0116] Reference Figure 3 , the temperature protection method comprises the following steps:

[0117] Step 300: Obtain terminal temperature.

[0118] The terminal temperature refers to the temperature value of the terminal of the protection device. The terminal temperature can be obtained through a temperature sensor. The method for obtaining the terminal temperature is selected by the staff according to the actual situation and will not be elaborated here.

[0119] Step 301: When the terminal temperature exceeds a preset circuit operating range, a sensing number is determined according to the terminal temperature.

[0120] The circuit operating range refers to the temperature range in which the circuit works stably. The circuit operating range is selected by the staff according to the actual situation and will not be elaborated here. The terminal temperature exceeds the circuit operating range, which means that the circuit temperature is too high at this time, which may easily cause damage to the power system. The sensing number refers to the pre-set number used to distinguish the temperature sensing device. The temperature sensing device refers to the sensing device used to obtain the terminal temperature. Each sensing number corresponds to a temperature sensing device. The sensing number can be obtained by querying the temperature sensing device that detects abnormal terminal temperature. The terminal temperature setting method and determination method and the temperature sensing device are selected by the staff according to the actual situation and will not be elaborated here.

[0121] Step 302: Match the installation location from a preset induction installation database according to the induction number.

[0122] The sensor installation database refers to a database that records the sensor numbers of temperature sensor devices and their corresponding installation locations.

[0123] Step 303: Determine the line number according to the installation location.

[0124] The line number is the number of the line detected at the installation location of the temperature sensing device. The method for determining the line number is selected by the staff according to the actual situation and will not be elaborated here.

[0125] Step 304: Determine the switch number according to the line number.

[0126] The switch number is the number of the circuit switch corresponding to the circuit number.

[0127] Step 305: Control the preset line switch to be disconnected according to the switch number, and generate fault report information according to the terminal temperature.

[0128] When the temperature is too high, the line power supply is disconnected through the line switch to reduce the continued heating of the terminal, and the fault report information is sent to the management terminal through the sending device to facilitate the staff to understand the abnormal terminal temperature, so as to carry out maintenance in time and reduce the situation of power system failure.

[0129] Reference Figure 4 , the high temperature treatment method comprises the following steps:

[0130] Step 400: When the terminal temperature exceeds a preset circuit operating range, a shooting control parameter is determined according to the installation position.

[0131] The photographing device refers to a device that is pre-set on the protective device and is used to obtain the appearance of the protective device. The photographing device is selected by the staff according to the actual situation and will not be described in detail here. The photographing control parameters refer to the parameters used to control the photographing device. The photographing control parameters include the orientation and focal length of the photographing device. The photographing control parameters can be obtained through the spatial relationship between the position of the photographing device and the installation position. The method for determining the photographing control parameters is selected by the staff according to the actual situation and will not be described in detail here.

[0132] Step 401: Acquire a terminal image according to shooting control parameters.

[0133] The terminal image refers to a picture of a terminal on a protection device with abnormal temperature, and the terminal image is obtained by a photographing device according to photographing control parameters.

[0134] Step 402: Determine whether there is an aging feature at the terminal according to the terminal image.

[0135] Aging characteristics refer to the corrosion characteristics of terminals that are prone to occur when protective devices are used for too long, such as rust, cracks, breakage, and yellowing of plastic. The existence of aging characteristics at the terminal can be determined by an aging characteristic recognition model, which refers to a neural network model obtained through sample training in advance.

[0136] Step 403: When an aging feature exists at the terminal, determine the aging degree based on the aging feature.

[0137] The aging degree refers to a pre-set value used to show the aging status of the terminal. The higher the aging degree of the terminal, the higher the aging degree value. The setting method of the aging degree is selected by the staff according to the actual situation and will not be described here. The aging degree can be obtained through the aging degree recognition model, which refers to a neural network model obtained through sample training in advance.

[0138] Step 404: Generate aging warning information according to the aging degree.

[0139] The aging warning information refers to information used to inform staff of the aging of the terminal. The aging warning information can be obtained through an aging warning information matching model. The aging warning information matching model refers to a neural network model obtained in advance through sample training.

[0140] Step 405: Control a preset sending device to send information to a preset management terminal according to the aging warning information.

[0141] When the terminal ages, it is easy to cause the resistance between the line and the protection device to increase, which will cause the terminal temperature to be too high. The aging condition of the terminal is sent to the management terminal through the sending device to notify the staff, thereby improving the staff's control over the power system and reducing the possibility of power system failures.

[0142] Reference Figure 5 The high temperature treatment method further comprises the following steps:

[0143] Step 406: When the aging degree falls into a preset replacement interval, the terminal position is determined according to the terminal image.

[0144] The replacement interval refers to the aging degree interval in which excessive aging of the terminals causes excessive resistance between the line and the protective device, leading to power system failure. The replacement interval is selected by the staff based on actual conditions and will not be elaborated here.

[0145] The terminal position refers to the coordinates of the terminal. The terminal position can be obtained from the terminal image through a terminal position recognition model. The terminal position recognition model refers to a neural network model obtained in advance through sample training.

[0146] Step 407: Determine the injection stroke according to the terminal position.

[0147] The injection device refers to a device used to inject the medium onto the terminal. The conductive medium refers to a substance used to connect the protection device and the line and maintain the power circuit between the protection device and the line. The conductive medium can be tin and other materials. The injection device and the conductive medium are selected by the staff according to the actual situation and are not described here. The injection stroke refers to the path of the injection device to inject the conductive medium onto the terminal. The injection stroke can be obtained through the injection stroke matching model. The injection stroke matching model refers to a neural network model obtained through sample training in advance.

[0148] Step 408: Control a preset injection device according to the injection stroke to inject a preset conductive medium into the terminal, and determine a loosening stroke according to the terminal position.

[0149] The release device refers to a device used to remove the terminal from the protective device. The release device generally adopts a mechanical arm. The release device is selected by the staff according to the actual situation, and it is not described here. The release stroke refers to the path of removing the terminal from the protective device through the release device. The release stroke can be obtained through the release stroke matching model. The release stroke matching model refers to a neural network model obtained by sample training in advance.

[0150] Step 409: Control a preset loosening device according to the loosening stroke to take out the terminal, and determine the filling stroke according to the terminal position.

[0151] The filling stroke refers to the path of the hole left after the conductive medium filling terminal is taken out through the injection device. The filling stroke can be obtained through a filling stroke matching model. The filling stroke matching model refers to a neural network model obtained in advance through sample training.

[0152] Step 410: Control a preset injection device according to the filling stroke to inject a preset conductive medium into the terminal installation port.

[0153] When the terminals are excessively aged, they need to be replaced to maintain the normal operation of the power system. At this time, the power supply of the line where the aged terminal is located is first disconnected by the line switch, and then the line and the protection device are connected through a conductive medium to reduce the situation where the line is detached from the protection device after the terminal is removed. The hole left after the terminal is removed is filled with a conductive medium to further strengthen the connection strength between the line and the protection device, and then the above-mentioned reclosing method is used to reclose the circuit breaker to maintain the normal operation of the power system.

[0154] Reference Figure 6 The high temperature treatment method further comprises the following steps:

[0155] Step 411: When the aging degree does not fall within the preset replacement interval, determine whether the terminal is loose based on the terminal image.

[0156] Whether the terminal is loose can be judged from the terminal image through the loose identification model, and the loose identification model refers to a neural network model obtained in advance through sample training.

[0157] Step 412: When the terminal is loose, determine the terminal model according to the terminal image.

[0158] The terminal model refers to an information set including parameters such as terminal length, diameter, and pitch. The terminal model can be obtained by querying a pre-set terminal database. The terminal database refers to a database that records the terminal appearance and its corresponding terminal model.

[0159] Step 413: Determine the terminal height according to the terminal image.

[0160] The terminal height refers to the height value of the terminal on the protective device exceeding the surface of the protective device. The terminal height can be obtained through a terminal height recognition model. The terminal height recognition model refers to a neural network model obtained in advance through sample training.

[0161] Step 414: Determine the number of loosening turns according to the terminal height and the terminal model.

[0162] The number of loose turns refers to the number of turns that the terminal is loose. The terminal is generally fixed with the thread of the protective device. The number of loose turns can be calculated based on parameters such as the terminal height and the pitch in the terminal model. The calculation method of the number of loose turns is common knowledge among people in this field and will not be elaborated here.

[0163] Step 415: Determine the locking stroke according to the terminal position.

[0164] The locking stroke refers to the path of locking the terminal through the release device. The locking stroke can be obtained through a locking stroke matching model. The locking stroke matching model refers to a neural network model obtained in advance through sample training.

[0165] Step 416: Control the preset loosening device according to the locking stroke to lock the terminal according to the number of loosening turns.

[0166] When the terminal is loose, it is easy to cause poor contact between the line and the protection device. At this time, the terminal is re-locked through the loosening device to ensure the normal operation of the power system.

[0167] Reference Figure 7 , the heat dissipation method comprises the following steps:

[0168] Step 500: When the terminal is not loose, obtain the ambient temperature.

[0169] Ambient temperature refers to the temperature value of the environment where the power system is located. The ambient temperature can be obtained through a temperature sensor. The method for obtaining the ambient temperature is selected by the staff according to the actual situation and will not be elaborated here.

[0170] Step 501: Calculate the difference between the terminal temperature and the ambient temperature and define it as the temperature difference.

[0171] The temperature difference refers to the difference between the terminal temperature and the ambient temperature, and the temperature difference is used to show the heating of the terminal.

[0172] Step 502: When the temperature difference exceeds a preset high temperature range, the blowing control parameter is determined according to the terminal position and the temperature difference.

[0173] The high temperature range refers to the temperature difference range of the terminal under normal working conditions. The high temperature range is selected by the staff according to the actual situation and will not be described in detail here. The blowing device refers to a device used to blow air to the terminal to improve the heat dissipation efficiency of the terminal. The blowing device is selected by the staff according to the actual situation and will not be described in detail here. If the temperature difference exceeds the high temperature range, it means that the terminal temperature is too high at this time, and the blowing device is needed to assist the terminal in heat dissipation.

[0174] Blowing control parameters refer to the parameters used to control the blowing device. Blowing control parameters include the steering angle of the blowing device and the fan speed. The steering angle is obtained by the spatial relationship between the position of the blowing device and the terminal position. The fan speed can be calculated using the formula V= (h×A×∆T) / (c×ρ×S×T). V is the required fan speed, h is the convective heat transfer coefficient, and the convective heat transfer coefficient h is related to factors such as the properties of the fluid (such as air, liquid), flow rate, and surface shape of the object. The convective heat transfer coefficient h is obtained by the staff through experiments in advance. A is the surface area of ​​the terminal in contact with the air. The surface area A is measured in advance by the staff. ∆T is the above-mentioned temperature difference, and c is the specific heat capacity of the air. c is generally used. , ρ is the density of air, ρ is generally used , S is the cross-sectional area of ​​the air outlet of the above-mentioned blowing device, and the cross-sectional area S is obtained by measuring in advance by the staff. T is the temperature difference before and after the air passes through the terminal, and the temperature difference T is obtained by measuring in advance by the staff.

[0175] Step 503: Control a preset blowing device to blow air toward the terminal according to the blowing control parameters.

[0176] When the terminal temperature is too high, the direction and wind force of the blowing device are controlled by the blowing control parameters, so as to blow accurately, improve the heat dissipation efficiency of the terminal, and ensure the stable operation of the power system.

[0177] Reference Figure 8 , the heat dissipation method further comprises the following steps:

[0178] Step 504: When the temperature difference exceeds a preset high temperature range, the clamping stroke is determined according to the terminal position.

[0179] The heat conducting device refers to a device used to conduct heat and dissipate heat. The heat conducting device can be a device with high heat dissipation efficiency such as a heat dissipation copper sheet. The heat conducting device is selected by the staff according to the actual situation and will not be described in detail here. The clamping device refers to a device used to clamp the heat conducting device and drive the heat conducting device to move. The clamping device generally uses a mechanical arm. The clamping device is selected by the staff according to the actual situation and will not be described in detail here.

[0180] The clamping stroke refers to the path for moving the heat conducting device to the terminal through the clamping device. The clamping stroke can be obtained through a clamping stroke matching model. The clamping stroke matching model refers to a neural network model obtained in advance through sample training.

[0181] Step 505: Control a preset clamping device according to the clamping stroke to clamp the preset heat conduction device to the terminal position, and determine the heat conduction stroke according to the terminal position.

[0182] The heat conducting medium refers to a substance used to connect the heat conducting device and the terminal so that the heat on the terminal is transferred to the heat conducting device. The heat conducting medium is selected by the staff according to the actual situation and will not be elaborated here.

[0183] The heat conduction stroke refers to the path through which the heat conduction medium is injected into the heat conduction device and the terminal through the injection device. The heat conduction stroke can be obtained through a heat conduction stroke matching model. The heat conduction stroke matching model refers to a neural network model obtained in advance through sample training.

[0184] Step 506: Control a preset injection device according to the heat conduction stroke to inject a preset heat conduction medium between the terminal and the heat conduction device to connect the terminal and the heat conduction device.

[0185] The heat conducting device is fixed on the terminal through a heat conducting medium, so that the heat on the terminal is conducted to the heat conducting device.

[0186] Step 507: Control the preset clamping device to release the clamping of the heat conducting device and retract it.

[0187] When the terminal temperature is too high, a heat conducting device is installed at the terminal to accelerate the heat dissipation efficiency of the terminal through the heat conducting device and reduce the situation where the terminal overheats and causes power system failures.

[0188] Reference Fig. 9 , the method for fixing the protective device comprises the following steps:

[0189] Step 600: When the aging degree falls into a preset replacement interval, the installation pressure information of the protection device is obtained.

[0190] The installation pressure information refers to the pressure parameters of the protective device on the mounting plate. The mounting plate refers to the object used to install the protective device. The protective device is generally fixed to the mounting plate by snap-on connection. The installation pressure information can be obtained through a pressure sensor set on the mounting plate. The method for obtaining the installation pressure information is selected by the staff according to actual conditions and will not be elaborated here.

[0191] Step 601: Determine the degree of distortion of the protection device according to the installation pressure information.

[0192] The degree of distortion refers to a pre-set numerical value used to show the aging condition of the protective device. The higher the degree of aging of the protective device, the higher the degree of distortion. Aging of the protective device may easily cause the protective device to loosen from the mounting plate, thereby causing changes in the installation pressure information. The degree of distortion of the protective device can be obtained by analyzing the changes in the installation pressure information. The degree of distortion is generally obtained through a distortion degree matching model. The distortion degree matching model refers to a neural network model obtained in advance through sample training.

[0193] Step 602: When the degree of distortion exceeds a preset installation range, a preset tightening device is controlled to tighten to fix the protective device, and a tightening image is acquired.

[0194] The installation range refers to the range of distortion values ​​for the protective device to be stably installed on the mounting plate. The installation range is selected by the staff according to the actual situation and will not be described in detail here. The distortion beyond the installation range means that the protective device is too old, and it is easy for the protective device to loosen or even fall. The tightening device refers to a device that binds the protective device to the mounting plate with a rope. The tightening device usually appears in pairs, and each pair of tightening devices controls one end of the rope. The tightening device is selected by the staff according to the actual situation and will not be described in detail here.

[0195] The tightening image refers to a picture of the protective device obtained after the protective device is tied to the mounting plate by the tightening device. The method for obtaining the tightening image is selected by the staff according to the actual situation and will not be elaborated here.

[0196] Step 603: Determine the tilting posture of the protection device according to the tightening image.

[0197] The tilt posture refers to the tilt direction and tilt angle of the protective device on the mounting plate. The tilt posture can be obtained through a tilt posture recognition model. The tilt posture recognition model refers to a neural network model obtained in advance through sample training.

[0198] Step 604: Determine the adjustment number and adjustment distance according to the tilt posture.

[0199] The adjustment number refers to a number that is set in advance and used to distinguish the tightening device. Each adjustment number corresponds to a tightening device one-to-one. The setting method of the adjustment number is selected by the staff according to the actual situation and will not be described in detail here. The adjustment distance is the distance that the tightening device with the adjustment number needs to be adjusted to make the protective device return to the straight state from the tilted state. The mounting plate is provided with a slide rail for the tightening device to slide up and down. The direction of the tightening device sliding on the slide rail is determined by the positive and negative signs of the adjustment distance. The adjustment distance can be obtained through the adjustment distance recognition model. The adjustment distance recognition model refers to a neural network model obtained in advance through sample training.

[0200] Step 605: According to the adjustment number, the preset tightening device is controlled to adjust the posture of the protection device according to the adjustment distance.

[0201] When the protective device is stably installed on the mounting plate, the tightening device is loosened to reduce the situation where the rope interferes with the protective device and causes structural damage to the protective device. When the protective device is too aged, the rope is tightened by the tightening device to restrain the protective device to the mounting plate, and the position of the tightening device is adjusted to return the protective device to the original position, thereby improving the stability of the power system operation and reducing the situation where the protective device becomes loose or even detaches from the mounting plate.

[0202] Based on the same inventive concept, an embodiment of the present invention provides an action protection control device for a power supply line, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute an action protection control method for a power supply line.

[0203] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0204] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A method for controlling the action protection of a power supply line, characterized in that: include: Acquire current signal; determining the residual current based on the current signal; When the residual current falls into the preset risk interval, the line number is determined according to the current signal; Determine the switch number based on the line number; Control the preset line switch to disconnect according to the switch number, and generate fault report information according to the residual current and line number; Controlling a preset sending device to send information to a preset management terminal according to the fault report information; Also included is a temperature protection method, the temperature protection method comprising: Acquire the temperature of the terminal of the preset protection device as the terminal temperature; When the terminal temperature exceeds the preset circuit operating range, the sensing number is determined according to the terminal temperature; Match the installation location from the preset induction installation database according to the induction number; Determine the line number according to the installation location; Determine the switch number based on the line number; Control the preset circuit switch to disconnect according to the switch number, and generate fault report information according to the terminal temperature; Also included is a high temperature treatment method, the high temperature treatment method comprising: When the terminal temperature exceeds the preset circuit operating range, the shooting control parameters are determined according to the installation position; Acquire the terminal image according to the shooting control parameters; Judging whether there are aging features at the terminal based on the terminal image; When an aging feature exists at the terminal, determining the degree of aging based on the aging feature; Generate aging warning information according to the aging degree; Controlling a preset sending device to send information to a preset management terminal according to the aging warning information; The high temperature treatment method also includes: When the aging degree falls into the preset replacement interval, the terminal position is determined according to the terminal image; Determine the injection stroke according to the terminal position; According to the injection stroke, the preset injection device is controlled to inject the preset conductive medium into the terminal, and the loosening stroke is determined according to the terminal position; Control the preset loosening device according to the loosening stroke to take out the terminal, and determine the filling stroke according to the terminal position; The preset injection device is controlled according to the filling stroke to inject the preset conductive medium into the terminal installation port.

2. The method for controlling the action protection of a power supply line according to claim 1, characterized in that: Also included is a reclosing method, the reclosing method comprising: Obtaining the line voltage of the power system; When the line voltage does not fall within the preset working voltage range, the preset protection device is controlled to disconnect the preset line switch and the circuit-breaking voltage of the power system is obtained; When the circuit breaker voltage falls into the preset closing interval, the preset reclosing device is controlled to close the circuit breaker and the closing voltage of the power system is obtained; When the closing voltage does not fall within the preset working voltage range, the preset reclosing device is controlled to disconnect the line switch, and fault report information is generated according to the closing voltage.

3. The method for controlling the action protection of a power supply line according to claim 1, characterized in that: The high temperature treatment method also includes: When the aging degree does not fall within the preset replacement interval, determine whether the terminal is loose based on the terminal image; When the terminal is loose, determine the terminal model based on the terminal image; Determine the terminal height based on the terminal image; Determine the number of loosening turns based on the terminal height and terminal model; Determine the locking stroke according to the terminal position; The preset loosening device is controlled according to the locking stroke to lock the terminal according to the number of loosening turns.

4. The method for controlling the action protection of a power supply line according to claim 3, characterized in that: Also included is a heat dissipation method, the heat dissipation method comprising: When the terminal is not loose, obtain the ambient temperature; Calculate the difference between the terminal temperature and the ambient temperature and define it as the temperature difference; When the temperature difference exceeds the preset high temperature range, the blowing control parameters are determined according to the terminal position and the temperature difference; The preset blowing device is controlled to blow air toward the terminal according to the blowing control parameters.

5. The method for controlling the action protection of a power supply line according to claim 4, characterized in that: The heat dissipation method further comprises: When the temperature difference exceeds the preset high temperature range, the clamping stroke is determined according to the terminal position; Controlling a preset clamping device according to a clamping stroke to clamp a preset heat conducting device to a terminal position, and determining a heat conducting stroke according to the terminal position; Controlling a preset injection device according to the heat conduction stroke to inject a preset heat conduction medium between the terminal and the heat conduction device to connect the terminal and the heat conduction device; The preset clamping device is controlled to release the clamping of the heat conducting device and retract.

6. The method for controlling the action protection of a power supply line according to claim 5, characterized in that: The method for obtaining the blowing control parameters includes: V=(h×A×∆T) / (c×ρ×S×T); V is the required fan speed; h is the convective heat transfer coefficient; A is the surface area of ​​the terminal in contact with the air; ∆T is the temperature difference; c is the specific heat capacity of air; ρ is the density of air; S is the cross-sectional area of ​​the air outlet of the blowing device; T is the temperature difference before and after the air passes through the terminal.

7. An action protection control device for a power supply line, characterized in that: The invention comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and executes an action protection control method for a power supply line as claimed in any one of claims 1 to 6.

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