A current-carrying alarm method, device and equipment of a power transmission line and a storage medium

Abstract

The application discloses a kind of power transmission line's current-carrying alarm method, device, equipment and storage medium, the method includes: the configuration parameter value related to current-carrying in power transmission line can be inquired;First variable value of the environment where power transmission line is located is set to prediction;According to the first variable value and configuration parameter, the first allowable current-carrying capacity of each phase of power transmission line is calculated;In the process of power transmission line operation, the actual second variable value of the environment where power transmission line is located is collected;According to the second variable value and configuration parameter, the actual second current-carrying capacity of each phase of power transmission line is calculated;According to the first current-carrying capacity and second current-carrying capacity, alarm operation is executed to each phase of power transmission line.This embodiment establishes flexible control strategy to the current-carrying capacity of power transmission line, so that theoretical prediction approximates actual situation, makes power transmission line more close to actual demand, guarantees power transmission line to run in normal current-carrying capacity load environment, reduces the frequency of failure, facilitates the planning and upgrading of power transmission line.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric power, and particularly relates to a current-carrying alarm method, device and equipment of a power transmission line and a storage medium. BACKGROUND

[0002] In the planning and upgrading of an electric power system, one of the links is to understand the current-carrying capacity of the power transmission line, to determine the load limit of the electric power system, to plan and upgrade the power transmission line, and to avoid overloading operation of the power transmission line, so as to improve the reliability and safety of the electric power system.

[0003] At present, the operating personnel of the electric power system mainly evaluates the current-carrying capacity of the power transmission line according to experience, selects the power transmission line with a possible appropriate current-carrying capacity to plan and upgrade.

[0004] The subjective influence of this mode is obvious, which makes the current-carrying capacity of the power transmission line easily deviate from the actual demand, causes the current-carrying capacity of the power transmission line to exceed the limit, causes a fault, and affects the planning and upgrading of the power transmission line. SUMMARY

[0005] Therefore, the present application provides a current-carrying alarm method, device, equipment and storage medium of a power transmission line, to improve the alarm accuracy of the power transmission line on the current-carrying capacity.

[0006] A first aspect of the present application provides a current-carrying alarm method of a power transmission line, comprising:

[0007] querying configuration parameters related to current-carrying in the power transmission line;

[0008] setting a predicted first variable value of an environment where the power transmission line is located;

[0009] calculating a first current-carrying capacity allowed for each phase of the power transmission line according to the first variable value and the configuration parameters;

[0010] acquiring an actual second variable value of the environment where the power transmission line is located in the process of operation of the power transmission line;

[0011] calculating a second current-carrying capacity actually of each phase of the power transmission line according to the second variable value and the configuration parameters;

[0012] performing an alarm operation on each phase of the power transmission line according to the first current-carrying capacity and the second current-carrying capacity.

[0013] A second aspect of the present application provides a current-carrying alarm device of a power transmission line, comprising:

[0014] a configuration parameter query module configured to query configuration parameters related to current-carrying in the power transmission line;

[0015] The first variable value setting module is configured to set a predicted first variable value for an environment in which the power transmission line is located.

[0016] The first ampacity calculation module is configured to calculate a first allowable ampacity of each phase of the power transmission line according to the first variable value and the configuration parameter.

[0017] The second variable value acquisition module is configured to acquire an actual second variable value for the environment in which the power transmission line is located during operation of the power transmission line.

[0018] The second ampacity calculation module is configured to calculate a second actual ampacity of each phase of the power transmission line according to the second variable value and the configuration parameter.

[0019] The alarm operation execution module is configured to perform an alarm operation on each phase of the power transmission line according to the first ampacity and the second ampacity.

[0020] The third aspect of the present application provides an electronic device, which comprises:

[0021] at least one processor; and

[0022] a memory connected to the at least one processor in communication; wherein

[0023] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the ampacity alarm method of the power transmission line according to the first aspect.

[0024] The fourth aspect of the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the ampacity alarm method of the power transmission line according to the first aspect.

[0025] The fifth aspect of the present application provides a computer program product, which comprises a computer program, and the computer program is executed by a processor to implement the ampacity alarm method of the power transmission line according to the first aspect.

[0026] In the embodiment, the configuration parameters related to the current carrying of the power transmission line can be queried; the first variable value of the environment where the power transmission line is located is set; the first allowable current carrying of each phase of the power transmission line is calculated according to the first variable value and the configuration parameters; the second variable value of the environment where the power transmission line is located is collected in the process of operation of the power transmission line; the second actual current carrying of each phase of the power transmission line is calculated according to the second variable value and the configuration parameters; and the alarm operation is performed on each phase of the power transmission line according to the first current carrying and the second current carrying. The embodiment establishes a flexible control strategy for the current carrying of the power transmission line, performs theoretical prediction in the early stage, relies on the deduction verification of the field environment in the later stage, performs alarm when the two deviate, so as to feed back to the theoretical prediction for modification, so that the theoretical prediction approximates to the actual situation, makes the power transmission line closer to the actual demand, guarantees the operation of the power transmission line in the load environment of the normal current carrying, reduces the frequency of faults, and facilitates the planning and upgrading of the power transmission line.

[0027] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0029] Figure 1 is a flow chart of a current carrying alarm method of a power transmission line provided by the first embodiment of the present application.

[0030] Figure 2 is a structural schematic diagram of a current carrying alarm device of a power transmission line provided by the second embodiment of the present application.

[0031] Figure 3 is a structural schematic diagram of an electronic device provided by the third embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to make the person skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and in the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can encompass the order of implementation other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to the steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0034] Embodiment one

[0035] Referring to Figure 1 , a flowchart of a power transmission line current-carrying alarm method provided by the embodiment one of the present application is shown, which can be executed by a power transmission line current-carrying alarm device, which can be realized in the form of hardware and / or software, and can be configured in an electronic device. As shown in Figure 1 , the method comprises:

[0036] Step 101, querying the configuration parameter value related to current-carrying in the power transmission line.

[0037] In the embodiment, the configuration parameter value related to current-carrying pre-entered in the power transmission line can be queried on the account of the power transmission line according to the asset ID of the power transmission line.

[0038] Exemplarily, the configuration parameter value includes surface heat dissipation coefficient, Stefan constant, surface heat absorption coefficient, conductor temperature coefficient, outer diameter (unit: m) and direct current resistance (unit: Ω / m) at specified temperature (such as 20℃), etc.

[0039] Step 102, setting the predicted first variable value of the environment where the power transmission line is located.

[0040] In the embodiment, the predicted first variable value can be set according to the environment where the power transmission line is planned to be deployed or has been deployed in the GIS (geographic information) system according to the asset ID of the power transmission line.

[0041] Exemplarily, the first variable value includes control temperature (unit: ℃), predicted environment temperature (unit: ℃), predicted wind speed (unit: m / s), predicted solar intensity (unit: w / m 2 ), etc.

[0042] Step 103, calculating the first allowable current-carrying capacity of each phase of the power transmission line according to the first variable value and the configuration parameter.

[0043] In practical application, the first carrying capacity allowed for each phase of the power transmission line can be calculated according to the first variable value and the configuration parameter in combination with the operation mechanism of the power transmission line.

[0044] Generally, the control modes of the A phase, the B phase and the C phase of the power transmission line are the same, and thus the first carrying capacity allowed for each phase of the power transmission line is the same.

[0045] In an embodiment of the present application, for the first variable, B is the control temperature, C is the predicted ambient temperature, D is the predicted wind speed, and E is the predicted sunshine intensity; and for the configuration parameter, I is the surface heat dissipation coefficient, J is the Stefan constant, K is the surface heat absorption coefficient, L is the conductor temperature coefficient, N is the outer diameter, and O is the direct current resistance. In addition, Q is the expected operation resistance, R is the measured radiation heat dissipation power, S is the measured convection heat dissipation power, and T is the third predicted sunshine heat absorption power.

[0046] Then, in the present embodiment, step 103 can include the following steps:

[0047] Step 1031, subtracting the predicted ambient temperature from the control temperature to obtain a predicted operation temperature rise.

[0048] In the present embodiment, the control temperature B represents the temperature that can be expected to be reached when each phase of the power transmission line is operated, and at this time, the control temperature B can be subtracted from the predicted ambient temperature C to obtain a predicted operation temperature rise P, which represents the temperature expected to be raised when each phase of the power transmission line is operated.

[0049] Then, the predicted operation temperature rise P can be expressed as: P = B - C.

[0050] Step 1032, calculating the expected operation resistance using the direct current resistance, the conductor temperature coefficient, the predicted ambient temperature and the predicted operation temperature rise.

[0051] In the present embodiment, the direct current resistance O, the conductor temperature coefficient L, the predicted ambient temperature C and the predicted operation temperature rise P can be substituted into a preset calculation formula of the resistance to calculate the expected resistance when each phase of the power transmission line is operated, which is denoted as the expected operation resistance Q.

[0052] Exemplarily, the expected operation resistance Q is expressed as: Q = O * (1 + L * (C + P - 20)).

[0053] Step 1033, calculating the predicted radiation heat dissipation power R using the surface heat dissipation coefficient, the Stefan constant, the outer diameter, the predicted operation temperature rise and the predicted ambient temperature.

[0054] In the embodiment, the surface heat dissipation coefficient I, the Stirling constant J, the outer diameter N, the predicted operating temperature rise P and the predicted ambient temperature C are substituted into the calculation formula of the radiation heat dissipation power to calculate the predicted radiation heat dissipation power R (unit: W / m).

[0055] Exemplarily, the predicted radiation heat dissipation power R is expressed as: R=3.1416*I*J*N*((P+C+273) 4 -(C+273) 4 ).

[0056] Step 1034, the predicted ambient temperature, the predicted operating temperature rise, the predicted wind speed and the outer diameter are used to calculate the predicted convection heat dissipation power.

[0057] In the embodiment, the predicted ambient temperature C, the predicted operating temperature rise P, the predicted wind speed D and the outer diameter N are substituted into the calculation formula of the convection heat dissipation power to calculate the predicted convection heat dissipation power S.

[0058] Exemplarily, the predicted convection heat dissipation power S is expressed as:

[0059] S=0.57*3.1416*(0.0242+7*(C+P / 2) / 100000)*P*(D*N / (0.0000132+9.6*(C+P / 2) / 100000000)) 0.485 .

[0060] Step 1035, the surface heat absorption coefficient, the solar radiation intensity and the outer diameter are used to calculate the predicted solar radiation heat absorption power.

[0061] In the embodiment, the surface heat absorption coefficient K, the solar radiation intensity E and the outer diameter N are substituted into the calculation formula of the solar radiation heat absorption power to calculate the predicted solar radiation heat absorption power T.

[0062] Exemplarily, the predicted solar radiation heat absorption power T is expressed as: T=K*E*N.

[0063] Step 1036, the expected operating resistance, the predicted radiation heat dissipation power, the predicted convection heat dissipation power and the predicted solar radiation heat absorption power are used to calculate the first allowable current-carrying capacity of each phase of the power transmission line.

[0064] In the embodiment, the expected operating resistance Q, the predicted radiation heat dissipation power R, the predicted convection heat dissipation power S and the predicted solar radiation heat absorption power T are substituted into the calculation formula of the current-carrying capacity to calculate the first allowable current-carrying capacity U of each phase of the power transmission line.

[0065] Exemplarily, the first allowable current-carrying capacity U is expressed as: U=((R+S-T) / Q) 0.5 .

[0066] Step 104, collecting actual second variable values of the environment where the power transmission line is located during the operation of the power transmission line.

[0067] During the actual operation of the power transmission line, the second variable values actually monitored and collected by the GIS system for the environment where the power transmission line is located can be read.

[0068] Exemplarily, the second variable values include the measured temperatures of the phase conductors (including the measured temperature of the A phase, the measured temperature of the B phase and the measured temperature of the C phase), the real-time ambient temperature, the real-time wind speed and the real-time sunshine intensity.

[0069] Step 105, calculating the actual second carrying capacity of each phase of the power transmission line according to the second variable values and the configuration parameters.

[0070] In actual application, the actual second carrying capacity of each phase of the power transmission line can be calculated according to the second variable values and the configuration parameters in combination with the operation mechanism of the power transmission line.

[0071] In an embodiment of the present application, for the second variable, BA is the measured temperature of the phase conductor (B is the measured temperature of the A phase conductor, C is the measured temperature of the B phase conductor and D is the measured temperature of the C phase conductor), E is the real-time ambient temperature, F is the real-time wind speed and G is the real-time sunshine intensity. In addition, for the configuration parameters, K is the surface heat dissipation coefficient, L is the Stefan constant, M is the surface heat absorption coefficient, N is the conductor temperature coefficient, P is the outer diameter and Q is the direct current resistance.

[0072] Then, in the embodiment, step 105 can include the following steps:

[0073] Step 1051, subtracting the real-time ambient temperature from the measured temperature of the phase conductor to obtain the real-time operation temperature rise of each phase.

[0074] In the embodiment, the measured temperature BA of the phase conductor is subtracted from the real-time ambient temperature E to obtain the real-time operation temperature rise BB of each phase, which represents the actual temperature rise when the power transmission line is operated.

[0075] The real-time operation temperature rise BB of each phase includes the real-time operation temperature rise R of the A phase, the real-time operation temperature rise S of the B phase and the real-time operation temperature rise T of the C phase.

[0076] Then, the real-time operation temperature rise BB can be represented as: BB = BA - E.

[0077] The real-time operation temperature rise R of the A phase can be represented as R = B - E, the real-time operation temperature rise S of the B phase can be represented as S = C - E and the real-time operation temperature rise T of the C phase can be represented as T = D - E.

[0078] Step 1052, using the direct current resistance, the wire temperature coefficient, the real-time environment temperature and the real-time running temperature rise of each phase to calculate the real-time running resistance of each phase.

[0079] In the embodiment, the direct current resistance Q, the wire temperature coefficient N, the real-time environment temperature E and the real-time running temperature rise BB of each phase are substituted into the preset calculation formula of the resistance to calculate the actual resistance of each phase in operation, which is recorded as the real-time running resistance BC.

[0080] The real-time running resistance BC of each phase includes the real-time running resistance U of the A phase, the real-time running resistance V of the B phase and the real-time running resistance W of the C phase.

[0081] For example, the real-time running resistance BC of each phase is represented as BC=Q*(1+N*(E+BB-20)).

[0082] The real-time running resistance U of the A phase is represented as U=Q*(1+N*(E+R-20)), the real-time running resistance V of the B phase is represented as V=Q*(1+N*(E+S-20)), and the real-time running resistance W of the C phase is represented as W=Q*(1+N*(E+T-20)).

[0083] Step 1053, using the surface heat dissipation coefficient, the Stefan constant, the outer diameter, the real-time running temperature rise of each phase and the real-time environment temperature E to calculate the measured radiation heat dissipation power of each phase.

[0084] In the embodiment, the surface heat dissipation coefficient K, the Stefan constant L, the outer diameter P, the real-time running temperature rise BB of each phase and the real-time environment temperature E are substituted into the calculation formula of the radiation heat dissipation power to calculate the measured radiation heat dissipation power BD of each phase.

[0085] The measured radiation heat dissipation power BD of each phase includes the measured radiation heat dissipation power X of the A phase, the measured radiation heat dissipation power Y of the B phase and the measured radiation heat dissipation power Z of the C phase.

[0086] For example, the measured radiation heat dissipation power BD of each phase is represented as X=3.1416*K*L*P*((R+E+273) 4 -(E+273) 4 ).

[0087] The measured radiation heat dissipation power X of the A phase is represented as Y=3.1416*K*L*P*((S+E+273) 4 -(E+273) 4 ).

[0088] The measured radiation heat dissipation power Y of the B phase is represented as Z=3.1416*K*L*P*((T+E+273) 4 -(E+273)4 )。

[0089] The measured radiation heat dissipation power Z of the C phase is represented as: BD=3.1416*K*L*P*((BB+E+273) 4 -(E+273) 4 )

[0090] In step 1054, the measured convective heat dissipation power of each phase is calculated using the real-time ambient temperature, the real-time operating temperature rise of each phase, the real-time wind speed, and the outer diameter.

[0091] In this embodiment, the real-time ambient temperature E, the real-time operating temperature rise BB of each phase, the real-time wind speed F, and the outer diameter P can be substituted into the calculation formula of the convective heat dissipation power to calculate the measured convective heat dissipation power BE of each phase.

[0092] The measured convective heat dissipation power BE of each phase includes the measured convective heat dissipation power AA of the A phase, the measured convective heat dissipation power AB of the B phase, and the measured convective heat dissipation power AC of the C phase.

[0093] For example, the measured convective heat dissipation power BE of each phase is represented as: BE=0.57*3.1416*(0.0242+7*(E+BB / 2) / 100000)*BB*(F*P / (0.0000132+9.6*(BB+R / 2) / 100000000)) 0.485 .

[0094] The measured convective heat dissipation power AA of the A phase is represented as: AA=0.57*3.1416*(0.0242+7*(E+R / 2) / 100000)*BB*(F*P / (0.0000132+9.6*(R+R / 2) / 100000000)) 0.485 .

[0095] The measured convective heat dissipation power AB of the B phase is represented as: AB=0.57*3.1416*(0.0242+7*(E+S / 2) / 100000)*BB*(F*P / (0.0000132+9.6*(S+R / 2) / 100000000)) 0.485 .

[0096] The measured convective heat dissipation power AC of the C phase is represented as: AC=0.57*3.1416*(0.0242+7*(E+T / 2) / 100000)*BB*(F*P / (0.0000132+9.6*(T+R / 2) / 100000000)) 0.485 .

[0097] Step 1055, using the surface heat absorption coefficient, the real-time solar radiation intensity and the outer diameter to calculate the measured solar radiation heat absorption power of each phase.

[0098] In the embodiment, the surface heat absorption coefficient M, the real-time solar radiation intensity G and the outer diameter P can be substituted into the calculation formula of the solar radiation heat absorption power to calculate the measured solar radiation heat absorption power BF of each phase.

[0099] The measured solar radiation heat absorption power BF of each phase includes the measured solar radiation heat absorption power AD of the A phase, the measured solar radiation heat absorption power AE of the B phase and the measured solar radiation heat absorption power AF of the C phase.

[0100] For example, the measured solar radiation heat absorption power BF of each phase is represented as: BF = M*G*P.

[0101] The measured solar radiation heat absorption power AD of the A phase is represented as: AD = M*G*P.

[0102] The measured solar radiation heat absorption power AE of the B phase is represented as: AE = M*G*P.

[0103] The measured solar radiation heat absorption power AF of the C phase is represented as: AF = M*G*P.

[0104] Step 1056, using the real-time running resistance of each phase, the measured radiation heat dissipation power of each phase, the measured convection heat dissipation power of each phase and the measured solar radiation heat absorption power of each phase to calculate the actual second carrying capacity of each phase of the power transmission line.

[0105] In the embodiment, the real-time running resistance BC of each phase, the measured radiation heat dissipation power BD of each phase, the measured convection heat dissipation power BE of each phase and the measured solar radiation heat absorption power BF of each phase can be substituted into the calculation formula of the carrying capacity to calculate the actual second carrying capacity BG of each phase of the power transmission line.

[0106] The actual second carrying capacity BG of each phase includes the actual second carrying capacity AG of the A phase, the actual second carrying capacity AH of the B phase and the actual second carrying capacity AI of the C phase.

[0107] For example, the second carrying capacity BG (AG / AH / AI) of each phase is represented as: BG = ((BD+BE-BF) / BC) 0.5 .

[0108] The second carrying capacity AG of the A phase is represented as: AG = ((X+AA-AD) / U) 0.5 .

[0109] The second carrying capacity AH of the B phase is represented as: AH = ((Y+AB-AE) / V) 0.5 .

[0110] The second current-carrying capacity AI of phase C is expressed as: AI = ((Z + AC - AF) / W) 0.5 .

[0111] Step 106, performing an alarm operation on each phase of the power transmission line according to the first current-carrying capacity and the second current-carrying capacity.

[0112] In the embodiment, the first current-carrying capacity and the second current-carrying capacity of the same phase of the power transmission line are compared, and when an abnormality of the phase is monitored, an alarm operation is performed on each phase of the power transmission line.

[0113] In a specific implementation, the degree of deviation of the second current-carrying capacity of each phase from the first current-carrying capacity can be calculated to obtain a current-carrying deviation rate of each phase, and the current-carrying deviation rate of each phase is expressed in the form of percentage or the like.

[0114] For example, the first current-carrying capacity is subtracted from the second current-carrying capacity of each phase to obtain a current-carrying deviation value, and the ratio between the current-carrying deviation value of each phase and the second current-carrying capacity of each phase is calculated to obtain the current-carrying deviation rate of each phase.

[0115] Suppose that the first current-carrying capacity of phase A is A, the second current-carrying capacity of phase A is AG, the first current-carrying capacity of phase B is I, the second current-carrying capacity of phase B is AH, the first current-carrying capacity of phase C is J, and the second current-carrying capacity of phase C is AI.

[0116] Then, the current-carrying deviation rate AJ of phase A can be expressed as: AJ = (H - AG) / AG * 100.

[0117] The current-carrying deviation rate AK of phase B can be expressed as: AK = (I - AH) / AH * 100.

[0118] The current-carrying deviation rate AL of phase C can be expressed as: AL = (J - AI) / AI * 100.

[0119] The current-carrying deviation rate of each phase is compared with a preset threshold value (such as 10%).

[0120] If the current-carrying deviation rate of a certain phase is greater than the preset threshold value, an alarm operation is performed on the power transmission line.

[0121] In the embodiment, the configuration parameter value related to current carrying in the power transmission line can be queried; a predicted first variable value of an environment where the power transmission line is located is set; a first allowable current carrying capacity of each phase of the power transmission line is calculated according to the first variable value and the configuration parameter; an actual second variable value of the environment where the power transmission line is located is collected in the process of operation of the power transmission line; an actual second current carrying capacity of each phase of the power transmission line is calculated according to the second variable value and the configuration parameter; and an alarm operation is performed on each phase of the power transmission line according to the first current carrying capacity and the second current carrying capacity. The embodiment establishes a flexible control strategy for the current carrying capacity of the power transmission line, performs theoretical prediction in the early stage, relies on on-site environment deduction verification in the later stage, performs alarm when deviation occurs between the two, so as to feedback to the theoretical prediction for modification, so that the theoretical prediction approximates to the actual situation, makes the power transmission line closer to the actual demand, ensures the power transmission line to operate in the load environment of normal current carrying capacity, reduces the frequency of faults, and facilitates the planning and upgrading of the power transmission line.

[0122] Embodiment two

[0123] Reference Figure 2 , a structure schematic diagram of a current carrying alarm device of a power transmission line provided by an embodiment two of the present application is shown. As Figure 2 shown, the device comprises:

[0124] A configuration parameter value query module 201 is configured to query the configuration parameter value related to current carrying in the power transmission line;

[0125] A first variable value setting module 202 is configured to set a predicted first variable value of an environment where the power transmission line is located;

[0126] A first current carrying capacity calculation module 203 is configured to calculate a first allowable current carrying capacity of each phase of the power transmission line according to the first variable value and the configuration parameter;

[0127] A second variable value collection module 204 is configured to collect an actual second variable value of the environment where the power transmission line is located in the process of operation of the power transmission line;

[0128] A second current carrying capacity calculation module 205 is configured to calculate an actual second current carrying capacity of each phase of the power transmission line according to the second variable value and the configuration parameter;

[0129] An alarm operation execution module 206 is configured to perform an alarm operation on each phase of the power transmission line according to the first current carrying capacity and the second current carrying capacity.

[0130] In an embodiment of the present application, the first variable value comprises a control temperature, a predicted environment temperature, a predicted wind speed and a predicted sunshine intensity;

[0131] The configuration parameter value comprises a surface heat dissipation coefficient, a Stefan constant, a surface heat absorption coefficient, a conductor temperature coefficient and an outer diameter and direct current resistance.

[0132] The first ampacity calculation module 203 comprises:

[0133] a predicted operating temperature rise calculation module for subtracting the predicted ambient temperature from the control temperature to obtain a predicted operating temperature rise;

[0134] an expected operating resistance calculation module for calculating an expected operating resistance using the direct current resistance, the conductor temperature coefficient, the predicted ambient temperature and the predicted operating temperature rise;

[0135] a predicted radiative heat dissipation power calculation module for calculating a predicted radiative heat dissipation power using the surface heat dissipation coefficient, the Stefan constant, the outer diameter, the predicted operating temperature rise and the predicted ambient temperature;

[0136] a predicted convective heat dissipation power calculation module for calculating a predicted convective heat dissipation power using the predicted ambient temperature, the predicted operating temperature rise, the predicted wind speed and the outer diameter;

[0137] a predicted solar heat absorption power calculation module for calculating a predicted solar heat absorption power using the surface heat absorption coefficient, the solar radiation intensity and the outer diameter;

[0138] a predicted ampacity calculation module for calculating the first allowable ampacity of each phase of the power transmission line using the expected operating resistance, the predicted radiative heat dissipation power, the predicted convective heat dissipation power and the predicted solar heat absorption power.

[0139] In an embodiment of the present application, the expected operating resistance is represented as:

[0140] Q=O*(1+L*(C+P-20));

[0141] The predicted radiative heat dissipation power is represented as:

[0142] R=3.1416*I*J*N*((P+C+273) 4 -(C+273) 4 );

[0143] The predicted convective heat dissipation power is represented as:

[0144] S=0.57*3.1416*(0.0242+7*(C+P / 2) / 100000)*P*(D*N / (0.0000132+9.6*(C+P / 2) / 100000000)) 0.485 ;

[0145] The predicted solar heat absorption power is represented as:

[0146] T=K*E*N;

[0147] The first carrying capacity is expressed as:

[0148] U = ((R + S - T) / Q) 0.5 ;

[0149] Wherein, B is the control temperature, C is the predicted ambient temperature, D is the predicted wind speed, E is the predicted sunshine intensity, I is the surface heat dissipation coefficient, J is the Stefan constant, K is the surface heat absorption coefficient, L is the conductor temperature coefficient, N is the outer diameter, O is the direct current resistance, Q is the expected operating resistance, R is the measured radiant heat dissipation power, S is the measured convective heat dissipation power, and T is the third predicted sunshine heat absorption power.

[0150] In an embodiment of the present application, the second variable value includes the measured temperature of each phase conductor, the real-time ambient temperature, the real-time wind speed, and the real-time sunshine intensity.

[0151] The configuration parameter value includes the surface heat dissipation coefficient, the Stefan constant, the surface heat absorption coefficient, the conductor temperature coefficient, and the outer diameter and the direct current resistance.

[0152] The second carrying capacity calculation module 205 includes:

[0153] A real-time operating temperature rise calculation module is configured to subtract the real-time ambient temperature from the measured temperature of each phase conductor to obtain the real-time operating temperature rise of each phase.

[0154] A real-time operating resistance calculation module is configured to calculate the real-time operating resistance of each phase using the direct current resistance, the conductor temperature coefficient, the real-time ambient temperature, and the real-time operating temperature rise of each phase.

[0155] A measured radiant heat dissipation power calculation module is configured to calculate the measured radiant heat dissipation power of each phase using the surface heat dissipation coefficient, the Stefan constant, the outer diameter, the real-time operating temperature rise of each phase, and the real-time ambient temperature.

[0156] A measured convective heat dissipation power calculation module is configured to calculate the measured convective heat dissipation power of each phase using the real-time ambient temperature, the real-time operating temperature rise of each phase, the real-time wind speed, and the outer diameter.

[0157] A measured sunshine heat absorption power calculation module is configured to calculate the measured sunshine heat absorption power of each phase using the surface heat absorption coefficient, the real-time sunshine intensity, and the outer diameter.

[0158] A measured carrying capacity calculation module is configured to calculate the actual second carrying capacity of each phase of the power transmission line using the real-time operating resistance of each phase, the measured radiant heat dissipation power of each phase, the measured convective heat dissipation power of each phase, and the measured sunshine heat absorption power of each phase.

[0159] In one embodiment of the present application, the real-time running resistance of each phase is represented as:

[0160] BC=Q*(1+N*(E+BB-20));

[0161] The measured radiation heat dissipation power of each phase is represented as:

[0162] BD=3.1416*K*L*P*((BB+E+273) 4 -(E+273) 4 );

[0163] The measured convection heat dissipation power of each phase is represented as:

[0164] BE=0.57*3.1416*(0.0242+7*(E+BB / 2) / 100000)*BB*(F*P / (0.0000132+9.6*(BB+R / 2) / 100000000)) 0.485 ;

[0165] The measured solar radiation heat absorption power of each phase is represented as:

[0166] BF=M*G*P;

[0167] The second current-carrying capacity of each phase is represented as:

[0168] BG= ((BD+BE-BF) / BC) 0.5 ;

[0169] Wherein, BA is the measured temperature of the conductor of each phase, E is the real-time ambient temperature, F is the real-time wind speed, G is the real-time solar radiation intensity, K is the surface heat dissipation coefficient, L is the Stefan constant, M is the surface heat absorption coefficient, N is the conductor temperature coefficient, P is the outer diameter, Q is the DC resistance, BC is the real-time running resistance of each phase, BD is the measured radiation heat dissipation power of each phase, BE is the measured convection heat dissipation power of each phase, BF is the third predicted solar radiation heat absorption power of each phase, and BG is the second current-carrying capacity.

[0170] In one embodiment of the present application, the alarm operation execution module 206 comprises:

[0171] A current-carrying deviation rate calculation module, configured to calculate the degree of deviation of the second current-carrying capacity of each phase from the first current-carrying capacity, to obtain the current-carrying deviation rate of each phase;

[0172] A current-carrying deviation alarm module, configured to perform an alarm operation on the power transmission line if the current-carrying deviation rate of a certain phase is greater than a preset threshold.

[0173] In one embodiment of the present application, the current-carrying deviation rate calculation module comprises:

[0174] A current-carrying deviation value calculation module is configured to subtract the second current of each phase from the first current to obtain a current-carrying deviation value.

[0175] A current-carrying ratio value calculation module is configured to calculate a ratio between the current-carrying deviation value of each phase and the second current of each phase to obtain a current-carrying deviation rate of each phase.

[0176] The current-carrying alarm device for a power transmission line provided in the embodiments of the present application can execute the current-carrying alarm method for a power transmission line provided in any of the embodiments of the present application, and has the corresponding function modules and beneficial effects of executing the current-carrying alarm method for a power transmission line.

[0177] Embodiment three

[0178] Referring to Figure 3 , a structural schematic diagram of an electronic device provided by an embodiment of the present application is shown. The electronic device is intended to represent various forms of digital computers, such as laptops, desktops, tablets, personal digital assistants, servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular telephones, smart phones, wearable devices (such as headsets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be examples only, and are not intended to limit the implementations of the present application described and / or claimed in this document.

[0179] As Figure 3 shown, the electronic device 10 includes at least one processor 11, and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., which is communicatively connected to the at least one processor 11, wherein the memory stores a computer program that can be executed by the at least one processor. The processor 11 can execute various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0180] A plurality of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network, such as the Internet, and / or various telecommunication networks.

[0181] The processor 11 can be various general and / or special purpose processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 performs various methods and processes described above, such as the power line current-carrying alarm method.

[0182] In some embodiments, the power line current-carrying alarm method can be implemented as a computer program tangibly embodied in a computer readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded onto the RAM 13 and executed by the processor 11, one or more steps of the power line current-carrying alarm method described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to perform the power line current-carrying alarm method by any other appropriate means, such as by means of firmware.

[0183] Various implementations of the systems and techniques described above can be realized in digital electronic circuitry, integrated circuitry, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on a chip (SOC), a programmable logic device (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0184] Computer programs for implementing the methods of the present application can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer program, when executed, can cause instructions defined in the flow charts and / or block diagrams to be implemented. The computer program can be executed entirely on a machine, partially on a machine, partially on a machine as a stand-alone software package, and partially on a remote machine or entirely on a remote machine or server.

[0185] In the context of the present application, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer-readable storage medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of a machine-readable storage medium will include one or more lines of a program of instructions in a transitory signal, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0186] To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0187] The systems and techniques described here can be implemented in a computing system that includes a back end component, e.g., as a data server, or that includes a middleware component, e.g., an application server, or that includes a front end component, e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here, or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication, e.g., a communication network. Examples of communication networks include a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0188] The computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. A server can be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system, to solve the defects of large management difficulty and weak business scalability in traditional physical host and VPS service.

[0189] Embodiment Four

[0190] The embodiment of the present application further provides a computer program product, which comprises a computer program, and the computer program is executed by a processor to implement the current-carrying alarm method of the power transmission line provided by any of the embodiments of the present application.

[0191] The computer program product, in the implementation process, can be written in one or more programming languages or combinations thereof to implement the computer program code for performing the operations of the present application, the programming languages including object-oriented programming languages such as Java, Smalltalk, C++, and conventional procedural programming languages such as "C" language or similar programming languages. The program code can be executed entirely on the user computer, partially on the user computer, as an independent software package, partially on the user computer and partially on a remote computer, or entirely on a remote computer or server. In the case involving a remote computer, the remote computer can be connected to the user computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, through the Internet by using an Internet service provider).

[0192] It should be understood that the various forms of flow shown above can be used to reorder, add, or remove steps. For example, the steps recited in the present application can be performed in parallel, in series, or in a different order, as long as the desired results of the technical solutions of the present application can be achieved, which are not limited herein.

[0193] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method of current-carrying alarm of a power transmission line, characterized by, comprising: querying configuration parameters related to current-carrying in a power transmission line; the configuration parameters include surface heat dissipation coefficient, stefan constant, surface heat absorption coefficient, conductor temperature coefficient, outer diameter and direct current resistance; setting a first variable value of prediction according to an environment where the power transmission line is located; the first variable value includes control temperature, predicted ambient temperature, predicted wind speed, predicted solar intensity; subtracting the predicted ambient temperature from the control temperature to obtain a predicted operating temperature rise; calculating expected operating resistance using the direct current resistance, the conductor temperature coefficient, the predicted ambient temperature and the predicted operating temperature rise; calculating predicted radiation heat dissipation power using the surface heat dissipation coefficient, the stefan constant, the outer diameter, the predicted operating temperature rise and the predicted ambient temperature; calculating predicted convective heat dissipation power using the predicted ambient temperature, the predicted operating temperature rise, the predicted wind speed and the outer diameter; calculating predicted solar heat absorption power using the surface heat absorption coefficient, the solar intensity and the outer diameter; calculating the first allowable current-carrying capacity of each phase of the power transmission line using the expected operating resistance, the predicted radiation heat dissipation power, the predicted convective heat dissipation power and the predicted solar heat absorption power; during the operation of the power transmission line, collecting actual second variable values of the environment where the power transmission line is located; the second variable values include measured temperatures of each phase conductor, real-time ambient temperature, real-time wind speed, real-time solar intensity; subtracting the real-time ambient temperature from the measured temperature of each phase to obtain the real-time operating temperature rise of each phase; calculating the real-time operating resistance of each phase using the direct current resistance, the conductor temperature coefficient, the real-time ambient temperature and the real-time operating temperature rise of each phase; calculating the measured radiation heat dissipation power of each phase using the surface heat dissipation coefficient, the stefan constant, the outer diameter, the real-time operating temperature rise of each phase and the real-time ambient temperature; calculating the measured convective heat dissipation power of each phase using the real-time ambient temperature, the real-time operating temperature rise of each phase, the real-time wind speed and the outer diameter; calculating the measured solar heat absorption power of each phase using the surface heat absorption coefficient, the real-time solar intensity and the outer diameter; calculating the actual second current-carrying capacity of each phase of the power transmission line using the real-time operating resistance of each phase, the measured radiation heat dissipation power of each phase, the measured convective heat dissipation power of each phase and the measured solar heat absorption power of each phase; calculating the degree of deviation of the second current-carrying capacity of each phase from the first current-carrying capacity to obtain the current-carrying deviation rate of each phase; if the current-carrying deviation rate of a certain phase is greater than a preset threshold, performing an alarm operation on the power transmission line.

2. The method of claim 1, wherein the expected operating resistance is represented as: Q1=O*(1+L1*(C+P1-20)); the predicted radiation heat dissipation power is represented as: Q2=O*(1+L1*(C+P2-20)); the predicted convective heat dissipation power is represented as: Q3=O*(1+L1*(C+P3-20)); the predicted solar heat absorption power is represented as: T=K1*E1*N1; and the first current-carrying capacity is represented as: ​ ​ ​ R = 3.1416 * I * J * N1 * ((P1 + C + 273) 4 - (C + 273) 4 ); ​ S = 0.57 * 3.1416 * (0.0242 + 7 * (C + P1 / 2) / 100000) * P1 * (D * N1 / (0.0000132 + 9.6 * (C + P1 / 2) / 100000000)) 0.485 ; ​ ​ ​ U = ((R + S - T) / Q1) 0.5 ; Wherein, C is the predicted ambient temperature, D is the predicted wind speed, E1 is the predicted solar intensity, I is the surface heat dissipation coefficient, J is the Stefan constant, K1 is the surface heat absorption coefficient, L1 is the wire temperature coefficient, N1 is the outer diameter, O is the direct current resistance, P1 is the predicted operating temperature rise, Q1 is the expected operating resistance, R is the measured radiation heat dissipation power, S is the measured convection heat dissipation power, T is the predicted solar heat absorption power, and U is the first current-carrying capacity.

3. The method of claim 1, wherein, The real-time operating resistance of each phase is represented as: BC=Q2*(1+N2*(E2+BB-20)); The measured radiation heat dissipation power of each phase is represented as: BD = 3.1416 * K2 * L2 * P2 * ((BB + E2 + 273) 4 - (E2 + 273) 4 ); The measured convection heat dissipation power of each phase is represented as: BE = 0.57*3.1416*(0.0242+7*(E2+BB / 2) / 100000)*BB*(F*P2 / (0.0000132+9.6*(E2+BB / 2) / 100000000)) 0.485 ; The measured solar heat absorption power of each phase is represented as: BF=M*G*P2; The second current-carrying capacity of each phase is represented as: BG = ((BD + BE - BF) / BC) 0.5 ; Wherein, E2 is the real-time ambient temperature, F is the real-time wind speed, G is the real-time solar intensity, K2 is the surface heat dissipation coefficient, L2 is the Stefan constant, M is the surface heat absorption coefficient, N2 is the wire temperature coefficient, P2 is the outer diameter, Q2 is the direct current resistance, BB is the real-time operating temperature rise, BC is the real-time operating resistance of each phase, BD is the measured radiation heat dissipation power of each phase, BE is the measured convection heat dissipation power of each phase, BF is the measured solar heat absorption power of each phase, and BG is the second current-carrying capacity.

4. The method of claim 1, wherein, The calculation of the degree of deviation of the second current-carrying capacity of each phase from the first current-carrying capacity obtains a current-carrying deviation rate of each phase, comprising: Subtracting the second current-carrying capacity of each phase from the first current-carrying capacity obtains a current-carrying deviation value; Calculating the ratio between the current-carrying deviation value of each phase and the second current-carrying capacity of each phase obtains a current-carrying deviation rate of each phase.

5. A current-carrying alarm device for a power line, characterized in that Comprising: A configuration parameter query module is configured to query configuration parameters related to current-carrying in a power transmission line; the configuration parameters include a surface heat dissipation coefficient, a Stefan constant, a surface heat absorption coefficient, a wire temperature coefficient, an outer diameter, and a direct current resistance; A first variable value setting module is configured to set predicted first variable values according to an environment in which the power transmission line is located; the first variable values include a control temperature, a predicted ambient temperature, a predicted wind speed, and a predicted solar intensity; A predicted operating temperature rise calculation module is configured to subtract the predicted ambient temperature from the control temperature to obtain a predicted operating temperature rise; An expected operating resistance calculation module is configured to calculate an expected operating resistance using the direct current resistance, the wire temperature coefficient, the predicted ambient temperature, and the predicted operating temperature rise; A predicted radiation heat dissipation power calculation module is configured to calculate a predicted radiation heat dissipation power using the surface heat dissipation coefficient, the Stefan constant, the outer diameter, the predicted operating temperature rise, and the predicted ambient temperature; A predicted convection heat dissipation power calculation module is configured to calculate a predicted convection heat dissipation power using the predicted ambient temperature, the predicted operating temperature rise, the predicted wind speed, and the outer diameter; a predicted solar heat absorption power calculation module configured to calculate a predicted solar heat absorption power using the surface heat absorption coefficient, the solar intensity, and the outer diameter; a predicted load flow calculation module configured to calculate a first load flow allowed for each phase of the power transmission line using the expected operating resistance, the predicted radiation heat dissipation power, the predicted convection heat dissipation power, and the predicted solar heat absorption power; a second variable value collection module configured to collect actual second variable values of an environment in which the power transmission line is located during operation of the power transmission line, the second variable values including a measured temperature of each phase conductor, a real-time ambient temperature, a real-time wind speed, and a real-time solar intensity; a real-time operating temperature rise calculation module configured to obtain a real-time operating temperature rise of each phase by subtracting the real-time ambient temperature from the measured temperature of each phase conductor; a real-time operating resistance calculation module configured to calculate a real-time operating resistance of each phase using the DC resistance, the conductor temperature coefficient, the real-time ambient temperature, and the real-time operating temperature rise of each phase; a measured radiation heat dissipation power calculation module configured to calculate a measured radiation heat dissipation power of each phase using the surface heat dissipation coefficient, the Stefan constant, the outer diameter, the real-time operating temperature rise of each phase, and the real-time ambient temperature; a measured convection heat dissipation power calculation module configured to calculate a measured convection heat dissipation power of each phase using the real-time ambient temperature, the real-time operating temperature rise of each phase, the real-time wind speed, and the outer diameter; a measured solar heat absorption power calculation module configured to calculate a measured solar heat absorption power of each phase using the surface heat absorption coefficient, the real-time solar intensity, and the outer diameter; a measured load flow calculation module configured to calculate an actual second load flow of each phase of the power transmission line using the real-time operating resistance of each phase, the measured radiation heat dissipation power of each phase, the measured convection heat dissipation power of each phase, and the measured solar heat absorption power of each phase; a load flow deviation rate calculation module configured to calculate a degree to which the second load flow of each phase deviates from the first load flow to obtain a load flow deviation rate of each phase; a load flow deviation alarm module configured to perform an alarm operation on the power transmission line if the load flow deviation rate of a certain phase is greater than a preset threshold.

6. An electronic device, comprising: The electronic device comprises: at least one processor; and a memory connected in communication with the at least one processor; wherein the memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the load flow alarm method of the power transmission line according to any one of claims 1-4.

7. A computer readable storage medium characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the load flow alarm method of the power transmission line according to any one of claims 1-4.

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