Current-carrying alarm method, device and equipment for power transmission line and storage medium

Abstract

The invention discloses a current-carrying alarm method, device and equipment for a power transmission line, and a storage medium. The method comprises the following steps: inquiring a configuration parameter value related to current carrying in the power transmission line; a predicted first variable value is set for the environment where the power transmission line is located; calculating a first current-carrying capacity allowed by each phase of the power transmission line according to the first variable value and the configuration parameter; in the operation process of the power transmission line, collecting an actual second variable value of the environment where the power transmission line is located; calculating the actual second current-carrying capacity of each phase of the power transmission line according to the second variable value and the configuration parameter; and executing alarm operation on each phase of the power transmission line according to the first current-carrying capacity and the second current-carrying capacity. According to the embodiment, a flexible control strategy is established for the current-carrying capacity of the power transmission line, so that theoretical prediction approaches to the actual condition, the power transmission line is closer to the actual demand, the power transmission line is ensured to operate in a load environment with normal current-carrying capacity, the fault frequency is reduced, and planning and upgrading of the power transmission line are facilitated.

Description

Technical Field

[0001] The present invention relates to the field of electric power technology, and in particular to a current carrying alarm method, device, equipment and storage medium for a transmission line. Background Art

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

[0003] At present, power system operators mainly evaluate the current carrying capacity of transmission lines based on experience and select transmission lines with potentially suitable current carrying capacity for planning and upgrading.

[0004] The subjective impact of this model is more obvious, which makes it easy for a large deviation to occur between the current carrying capacity of the transmission line and the actual demand, causing the current carrying capacity of the transmission line to exceed the limit and cause failures, affecting the planning and upgrading of the transmission line. Summary of the invention

[0005] In view of this, the present invention provides a current-carrying alarm method, device, equipment and storage medium for a power transmission line, so as to improve the alarm accuracy of the power transmission line in terms of current-carrying capacity.

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

[0007] Query the configuration parameters related to current carrying in the transmission line;

[0008] Setting a predicted first variable value for the environment in which the transmission line is located;

[0009] Calculating a first allowable current carrying capacity of each phase of the transmission line according to the first variable value and the configuration parameter;

[0010] During the operation of the transmission line, collecting an actual second variable value of the environment in which the transmission line is located;

[0011] Calculating the actual second current carrying capacity of each phase of the transmission line according to the second variable value and the configuration parameter;

[0012] 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.

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

[0014] Configuration parameter query module, used to query the configuration parameters related to current carrying in the transmission line;

[0015] A first variable value setting module, used to set a predicted first variable value for the environment in which the transmission line is located;

[0016] A first current carrying capacity calculation module, used for calculating a first current carrying capacity allowed for each phase of the transmission line according to the first variable value and the configuration parameter;

[0017] A second variable value acquisition module is used to collect an actual second variable value of the environment in which the transmission line is located during the operation of the transmission line;

[0018] A second current carrying capacity calculation module, used for calculating the actual second current carrying capacity of each phase of the transmission line according to the second variable value and the configuration parameter;

[0019] An alarm operation execution module is used to execute an alarm operation on each phase of the transmission line according to the first current carrying capacity and the second current carrying capacity.

[0020] A third aspect of the present invention provides an electronic device, the electronic device comprising:

[0021] at least one processor; and

[0022] a memory communicatively connected to the at least one processor; 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 so that the at least one processor can execute the current carrying alarm method for the power transmission line as described in the first aspect above.

[0024] A fourth aspect of the present invention provides a computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the current carrying alarm method for a power transmission line as described in the first aspect above.

[0025] A fifth aspect of the present invention provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the method for current carrying alarm of a power transmission line as described in the first aspect above is implemented.

[0026] In this embodiment, the configuration parameter values ​​related to the current carrying capacity in the transmission line can be queried; the predicted first variable value is set for the environment in which the transmission line is located; the first current carrying capacity allowed for each phase of the transmission line is calculated based on the first variable value and the configuration parameter; during the operation of the transmission line, the actual second variable value is collected for the environment in which the transmission line is located; the actual second current carrying capacity of each phase of the transmission line is calculated based on the second variable value and the configuration parameter; and the alarm operation is performed on each phase of the transmission line based on the first current carrying capacity and the second current carrying capacity. This embodiment establishes a flexible control strategy for the current carrying capacity of the transmission line, performs theoretical predictions in the early stage, and relies on the derivation and verification of the field environment in the later stage. When there is a deviation between the two, an alarm is issued, which is then fed back to the theoretical prediction for modification, so that the theoretical prediction is close to the actual situation, so that the transmission line is closer to the actual demand, and the transmission line is guaranteed to operate in a load environment with normal current carrying capacity, reduce the frequency of failures, and facilitate the planning and upgrading of the transmission line.

[0027] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 This is a flow chart of a current carrying alarm method for a power transmission line provided in Embodiment 1 of the present invention.

[0030] Figure 2 It is a structural schematic diagram of a current-carrying alarm device for a power transmission line provided in Embodiment 2 of the present invention.

[0031] Figure 3 It is a structural schematic diagram of an electronic device provided in Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can cover sequential implementations other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] Embodiment 1

[0035] See also Figure 1 , shows a flow chart of a current alarm method for a power transmission line provided by a first embodiment of the present invention, the method can be executed by a current alarm device for a power transmission line, the current alarm device for a power transmission line can be implemented in the form of hardware and / or software, and the current alarm device for a power transmission line can be configured in an electronic device. Figure 1 As shown, the method includes:

[0036] Step 101: query the configuration parameters related to current carrying in the transmission line.

[0037] In this embodiment, the configuration parameters related to the current carrying capacity that were pre-entered for the transmission line can be queried in the transmission line ledger according to the asset ID of the transmission line.

[0038] Exemplarily, the configuration parameters include surface heat dissipation coefficient, Stephen constant, surface heat absorption coefficient, wire temperature coefficient, outer diameter (in m) and DC resistance (in Ω / m) at a specified temperature (such as 20° C.), etc.

[0039] Step 102: Set a predicted first variable value for the environment in which the transmission line is located.

[0040] In this embodiment, in a GIS (geographic information) system, the environment in which the transmission line is planned to be deployed or has been deployed may be queried based on the asset ID of the transmission line, and the predicted first variable value may be set based on the environment.

[0041] For example, the first variable value includes the control temperature (in degrees Celsius), the predicted ambient temperature (in degrees Celsius), the predicted wind speed (in meters per second), the predicted sunshine intensity (in w / m 2 ),etc.

[0042] Step 103: Calculate the first allowable current carrying capacity of each phase of the transmission line according to the first variable value and the configuration parameters.

[0043] In practical applications, the first allowable current carrying capacity of each phase of the transmission line can be calculated based on the first variable value and the configuration parameters in combination with the operation mechanism of the transmission line.

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

[0045] In one embodiment of the present invention, for the first variable, B is set as the control temperature, C is the predicted ambient temperature, D is the predicted wind speed, and E is the predicted sunshine intensity. For the configuration parameters, I is set as the surface heat dissipation coefficient, J is the Stephen constant, K is the surface heat absorption coefficient, L is the wire temperature coefficient, N is the outer diameter, and O is the DC resistance. In addition, Q is set as the expected operating resistance, R is the measured radiation heat dissipation power, S is the measured convection heat dissipation power, and T is the third predicted sunshine absorption power.

[0046] Then, in this embodiment, step 103 may include the following steps:

[0047] Step 1031: Subtract the predicted ambient temperature from the control temperature to obtain the predicted operating temperature rise.

[0048] In this embodiment, the control temperature B represents the temperature that can be expected to be reached when each phase of the transmission line is in operation. At this time, the control temperature B can be subtracted from the predicted ambient temperature C to obtain the predicted operating temperature rise P, and the predicted operating temperature rise P represents the expected temperature increase when each phase of the transmission line is in operation.

[0049] Then, the predicted operating temperature rise P can be expressed as: P=BC.

[0050] Step 1032: Calculate the expected operating resistance using the DC resistance, the conductor temperature coefficient, the predicted ambient temperature, and the predicted operating temperature rise.

[0051] In this embodiment, the DC resistance O, the conductor temperature coefficient L, the predicted ambient temperature C and the predicted operating temperature rise P can be substituted into a preset resistance calculation formula to calculate the expected resistance of each phase of the transmission line during operation, which is recorded as the expected operating resistance Q.

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

[0053] Step 1033: Calculate the predicted radiation heat dissipation power R using the surface heat dissipation coefficient, the Stephen constant, the outer diameter, the predicted operating temperature rise, and the predicted ambient temperature.

[0054] In this embodiment, the surface heat dissipation coefficient I, Stephen constant J, outer diameter N, predicted operating temperature rise P and predicted ambient temperature C can be substituted into the calculation formula of radiation heat dissipation power to calculate the predicted radiation heat dissipation power R (in 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: Calculate the predicted convective heat dissipation power using the predicted ambient temperature, the predicted operating temperature rise, the predicted wind speed, and the outer diameter.

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

[0058] Exemplarily, the predicted convective 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: Use the surface heat absorption coefficient, sunlight intensity and outer diameter to calculate and predict the sunlight absorption power.

[0061] In this embodiment, the surface heat absorption coefficient K, the sunlight intensity E and the outer diameter N can be substituted into the calculation formula of the sunlight heat absorption power to calculate and predict the sunlight heat absorption power T.

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

[0063] Step 1036: Calculate the first allowable current carrying capacity of each phase of the 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.

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

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

[0066] Step 104: During the operation of the transmission line, an actual second variable value is collected from the environment in which the transmission line is located.

[0067] During the actual operation of the transmission line, the second variable value collected from the actual monitoring of the environment in which the transmission line is located can be read from the GIS system.

[0068] Exemplarily, the second variable value includes the measured temperature of each phase conductor (including the measured temperature of phase A, the measured temperature of phase B and the measured temperature of phase C), real-time ambient temperature, real-time wind speed, and real-time sunshine intensity.

[0069] Step 105: Calculate the actual second current carrying capacity of each phase of the transmission line according to the second variable value and the configuration parameters.

[0070] In practical applications, the actual second current carrying capacity of each phase of the transmission line can be calculated based on the second variable value and the configuration parameters in combination with the operation mechanism of the transmission line.

[0071] In one embodiment of the present invention, for the second variable, BA is set as the measured temperature of each 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 set as the surface heat dissipation coefficient, L is the Stephen constant, M is the surface heat absorption coefficient, N is the conductor temperature coefficient, P is the outer diameter, and Q is the DC resistance.

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

[0073] Step 1051: subtract the real-time ambient temperature from the actual measured temperature of the conductor of each phase to obtain the real-time operating temperature rise of each phase.

[0074] In this embodiment, the real-time operating temperature rise BB of each phase is obtained by subtracting the real-time ambient temperature E from the actual measured conductor temperature BA of each phase. The real-time operating temperature rise BB of each phase represents the actual temperature rise of each phase of the transmission line during operation.

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

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

[0077] The real-time operating temperature rise R of phase A can be expressed as R=BE, the real-time operating temperature rise S of phase B can be expressed as S=CE, and the real-time operating temperature rise T of phase C can be expressed as T=DE.

[0078] Step 1052: Calculate the real-time operating resistance of each phase using the DC resistance, the wire temperature coefficient, the real-time ambient temperature and the real-time operating temperature rise of each phase.

[0079] In this embodiment, the DC resistance Q, the wire temperature coefficient N, the real-time ambient temperature E and the real-time operating temperature rise BB of each phase can be substituted into the preset resistance calculation formula to calculate the actual resistance of each phase during operation, which is recorded as the real-time operating resistance BC.

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

[0081] Exemplarily, the real-time operating resistance BC of each phase is expressed as: BC=Q*(1+N*(E+BB-20)).

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

[0083] Step 1053: Calculate the measured radiation heat dissipation power of each phase using the surface heat dissipation coefficient, the Stephen constant, the outer diameter, the real-time operating temperature rise of each phase and the real-time ambient temperature E.

[0084] In this embodiment, the surface heat dissipation coefficient K, the Stephen constant L, the outer diameter P, the real-time operating temperature rise BB of each phase and the real-time ambient temperature E can be 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] Exemplarily, the measured radiation heat dissipation power BD of each phase is expressed as: X = 3.1416*K*L*P*((R+E+273) 4 -(E+273) 4 ).

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

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

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

[0090] Step 1054: 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.

[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 convection heat dissipation power to calculate the measured convection heat dissipation power BE of each phase.

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

[0093] Exemplarily, the measured convective heat dissipation power BE of each phase is expressed 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] Among them, the measured convection heat dissipation power AA of phase A is expressed 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 convection heat dissipation power AB of phase B is expressed 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 convection heat dissipation power AC of phase C is expressed 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: Calculate the actual solar heat absorption power of each phase using the surface heat absorption coefficient, real-time solar radiation intensity and outer diameter.

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

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

[0100] Exemplarily, the measured solar heat absorption power BF of each phase is expressed as: BF=M*G*P.

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

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

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

[0104] Step 1056: Calculate the actual second current carrying capacity of each phase of the 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.

[0105] In this embodiment, the real-time operating 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 heat absorption power BF of each phase can be substituted into the current carrying capacity calculation formula to calculate the actual second current carrying capacity BG of each phase of the transmission line.

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

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

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

[0109] The second current carrying capacity AH of phase B is expressed 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: Perform an alarm operation on each phase of the transmission line according to the first current carrying capacity and the second current carrying capacity.

[0112] In this embodiment, for the same phase of the transmission line, the first current carrying capacity and the second current carrying capacity may be compared, and when an abnormality is detected in the phase, an alarm operation may be performed on each phase of the transmission line.

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

[0114] Exemplarily, the second current carrying capacity of each phase may be subtracted from the first current carrying capacity 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 may be calculated to obtain a current carrying deviation rate of each phase.

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

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

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

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

[0119] The current deviation rate of each phase is compared with a preset threshold (eg 10%).

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

[0121] In this embodiment, the configuration parameter values ​​related to the current carrying capacity in the transmission line can be queried; the predicted first variable value is set for the environment in which the transmission line is located; the first current carrying capacity allowed for each phase of the transmission line is calculated based on the first variable value and the configuration parameter; during the operation of the transmission line, the actual second variable value is collected for the environment in which the transmission line is located; the actual second current carrying capacity of each phase of the transmission line is calculated based on the second variable value and the configuration parameter; and the alarm operation is performed on each phase of the transmission line based on the first current carrying capacity and the second current carrying capacity. This embodiment establishes a flexible control strategy for the current carrying capacity of the transmission line, performs theoretical predictions in the early stage, and relies on the derivation and verification of the field environment in the later stage. When there is a deviation between the two, an alarm is issued, which is then fed back to the theoretical prediction for modification, so that the theoretical prediction is close to the actual situation, so that the transmission line is closer to the actual demand, and the transmission line is guaranteed to operate in a load environment with normal current carrying capacity, reduce the frequency of failures, and facilitate the planning and upgrading of the transmission line.

[0122] Embodiment 2

[0123] See also Figure 2 , shows a schematic diagram of the structure of a current-carrying alarm device for a power transmission line provided by Embodiment 2 of the present invention. Figure 2 As shown, the device comprises:

[0124] Configuration parameter query module 201, used to query the configuration parameter values ​​related to the current in the transmission line;

[0125] A first variable value setting module 202, used to set a predicted first variable value for the environment in which the power transmission line is located;

[0126] A first current carrying capacity calculation module 203, used to calculate a first current carrying capacity allowed for each phase of the transmission line according to the first variable value and the configuration parameter;

[0127] A second variable value acquisition module 204 is used to acquire an actual second variable value of the environment in which the transmission line is located during the operation of the transmission line;

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

[0129] The alarm operation execution module 206 is used to execute an alarm operation on each phase of the transmission line according to the first current carrying capacity and the second current carrying capacity.

[0130] In one embodiment of the present invention, the first variable value includes a controlled temperature, a predicted ambient temperature, a predicted wind speed, and a predicted sunshine intensity;

[0131] The configuration parameters include surface heat dissipation coefficient, Stephen constant, surface heat absorption coefficient, wire temperature coefficient, outer diameter and DC resistance;

[0132] The first current carrying capacity calculation module 203 includes:

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

[0134] An expected operation resistance calculation module, used to calculate the expected operation resistance using the DC resistance, the wire temperature coefficient, the predicted ambient temperature and the predicted operation temperature rise;

[0135] A predicted radiation heat dissipation power calculation module, used to calculate the predicted radiation heat dissipation power using the surface heat dissipation coefficient, the Stephen constant, the outer diameter, the predicted operating temperature rise and the predicted ambient temperature;

[0136] A predicted convection heat dissipation power calculation module, used to calculate the predicted convection heat dissipation power using the predicted ambient temperature, the predicted operating temperature rise, the predicted wind speed, and the outer diameter;

[0137] A predicted sunlight heat absorption power calculation module, used to calculate the predicted sunlight heat absorption power using the surface heat absorption coefficient, the sunlight intensity and the outer diameter;

[0138] The predicted current carrying capacity calculation module is used to calculate the first current carrying capacity allowed for each phase of the 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.

[0139] In one embodiment of the present invention, the expected operating resistance is expressed as:

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

[0141] The predicted radiation heat dissipation power is expressed as:

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

[0143] The predicted convection heat dissipation power is expressed 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 expressed as:

[0146] T = K*E*N;

[0147] The first current carrying capacity is expressed as:

[0148] U=((R+ST) / Q) 0.5 ;

[0149] Among them, 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 Stephen constant, K is the surface heat absorption coefficient, L is the wire temperature coefficient, N is the outer diameter, O is the DC resistance, Q is the expected operating resistance, R is the measured radiation heat dissipation power, S is the measured convection heat dissipation power, and T is the third predicted sunshine absorption power.

[0150] In one embodiment of the present invention, 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 parameters include surface heat dissipation coefficient, Stephen constant, surface heat absorption coefficient, wire temperature coefficient, outer diameter and DC resistance;

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

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

[0154] A real-time operation resistance calculation module, used to calculate the real-time operation resistance of each phase using the DC resistance, the wire temperature coefficient, the real-time ambient temperature and the real-time operation temperature rise of each phase;

[0155] A measured radiation heat dissipation power calculation module, used to calculate the measured radiation heat dissipation power of each phase using the surface heat dissipation coefficient, the Stephen constant, the outer diameter, the real-time operating temperature rise of each phase and the real-time ambient temperature;

[0156] A measured convection heat dissipation power calculation module, used to calculate the 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;

[0157] A measured sunshine heat absorption power calculation module, used 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] The measured current carrying capacity calculation module is used to calculate the actual second current carrying capacity of each phase of the 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.

[0159] In one embodiment of the present invention, the real-time operating resistance of each phase is expressed as:

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

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

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

[0163] The measured convective heat dissipation power of each phase is expressed 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 heat absorption power of each phase is expressed as:

[0166] BF = M*G*P;

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

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

[0169] Among them, 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 sunshine intensity, K is the surface heat dissipation coefficient, L is the Stephen 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 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 third predicted sunshine absorption power of each phase, and BG is the second current carrying capacity.

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

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

[0172] The current deviation alarm module is used to perform an alarm operation on the transmission line if the current deviation rate of a phase is greater than a preset threshold.

[0173] In one embodiment of the present invention, the current deviation rate calculation module includes:

[0174] a current carrying deviation value calculation module, configured to obtain a current carrying deviation value by subtracting the second current carrying value of each phase from the first current carrying value;

[0175] The current ratio calculation module is used to calculate the ratio between the current deviation value of each phase and the second current carrying capacity of each phase to obtain the current deviation rate of each phase.

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

[0177] Embodiment 3

[0178] See also Figure 3 , showing a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0179] like Figure 3 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform 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 to 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 number 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 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 may be a variety of general and / or special 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 special 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 executes the various methods and processes described above, such as the current carrying alarm method of the transmission line.

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

[0183] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0184] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0185] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, 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 disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0186] To provide interaction with a user, the systems and techniques described herein may 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 trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0187] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may 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] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may 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 difficult management and weak business scalability in traditional physical hosts and VPS services.

[0189] Embodiment 4

[0190] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the current carrying alarm method for a power transmission line provided in any embodiment of the present invention is implemented.

[0191] In the process of implementation, the computer program product can be written in one or more programming languages ​​or a combination thereof to perform the computer program code of the present invention, 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's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, using an Internet service provider to connect through the Internet).

[0192] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0193] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A current carrying alarm method for a power transmission line, characterized in that: include: Query the configuration parameters related to current carrying in the transmission line; Setting a predicted first variable value for the environment in which the transmission line is located; Calculating a first allowable current carrying capacity of each phase of the transmission line according to the first variable value and the configuration parameter; During the operation of the transmission line, collecting an actual second variable value of the environment in which the transmission line is located; Calculating the actual second current carrying capacity of each phase of the transmission line according to the second variable value and the configuration parameter; 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.

2. The method according to claim 1, characterized in that The first variable value includes the control temperature, the predicted ambient temperature, the predicted wind speed, and the predicted sunshine intensity; The configuration parameters include surface heat dissipation coefficient, Stephen constant, surface heat absorption coefficient, wire temperature coefficient, outer diameter and DC resistance; The calculating, according to the first variable value and the configuration parameter, a first current carrying capacity allowed for each phase of the transmission line comprises: Subtract the predicted ambient temperature from the control temperature to obtain a predicted operating temperature rise; Calculate the expected operating resistance using the DC resistance, the wire temperature coefficient, the predicted ambient temperature and the predicted operating temperature rise; Calculate the predicted radiation heat dissipation power using the surface heat dissipation coefficient, the Stephen constant, the outer diameter, the predicted operating temperature rise and the predicted ambient temperature; Calculate the predicted convection heat dissipation power using the predicted ambient temperature, the predicted operating temperature rise, the predicted wind speed, and the outer diameter; Calculate and predict the solar heat absorption power using the surface heat absorption coefficient, the solar radiation intensity and the outer diameter; The first allowable current carrying capacity of each phase of the transmission line is calculated using the expected operating resistance, the predicted radiation heat dissipation power, the predicted convection heat dissipation power and the predicted solar heat absorption power.

3. The method according to claim 2, characterized in that The expected operating resistance is expressed as: Q = O*(1+L*(C+P-20)); The predicted radiation heat dissipation power is expressed as: R=3.1416*I*J*N*((P+C+273) 4 -(C+273) 4 ); The predicted convection heat dissipation power is expressed as: 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 ; The predicted solar heat absorption power is expressed as: T = K*E*N; The first current carrying capacity is expressed as: U=((R+S-T) / Q) 0.5 ; Among them, 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 Stephen constant, K is the surface heat absorption coefficient, L is the wire temperature coefficient, N is the outer diameter, O is the DC resistance, Q is the expected operating resistance, R is the measured radiation heat dissipation power, S is the measured convection heat dissipation power, and T is the third predicted sunshine absorption power.

4. The method according to claim 1, characterized in that: 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; The configuration parameters include surface heat dissipation coefficient, Stephen constant, surface heat absorption coefficient, wire temperature coefficient, outer diameter and DC resistance; The calculating the actual second current carrying capacity of each phase of the transmission line according to the second variable value and the configuration parameter includes: Subtract the real-time ambient temperature from the measured temperature of the conductor 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 DC resistance, the wire 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 Stephen constant, the outer diameter, the real-time operating temperature rise of each phase and the real-time ambient temperature; 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; Calculate the measured sunshine absorption power of each phase using the surface absorption coefficient, the real-time sunshine intensity and the outer diameter; The actual second current carrying capacity of each phase of the transmission line is calculated 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.

5. The method according to claim 4, characterized in that The real-time operating resistance of each phase is expressed as: BC = Q*(1+N*(E+BB-20)); The measured radiation heat dissipation power of each phase is expressed as: BD=3.1416*K*L*P*((BB+E+273) 4 -(E+273) 4 ); The measured convective heat dissipation power of each phase is expressed 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 ; The measured solar heat absorption power of each phase is expressed as: BF = M*G*P; The second current carrying capacity of each phase is expressed as: BG=((BD+BE-BF) / BC) 0.5 ; Among them, 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 sunshine intensity, K is the surface heat dissipation coefficient, L is the Stephen 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 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 third predicted sunshine absorption power of each phase, and BG is the second current carrying capacity.

6. The method according to any one of claims 1 to 5, characterized in that The performing an alarm operation on each phase of the transmission line according to the first current carrying capacity and the second current carrying capacity includes: Calculating the degree to which the second current carrying capacity of each phase deviates from the first current carrying capacity to obtain a current carrying deviation rate of each phase; If the current deviation rate of a certain phase is greater than a preset threshold, an alarm operation is performed on the transmission line.

7. The method according to claim 6, characterized in that The calculating the degree to which the second current carrying capacity of each phase deviates from the first current carrying capacity to obtain the current carrying deviation rate of each phase includes: Subtract the second current-carrying value of each phase from the first current-carrying value to obtain a current-carrying deviation value; 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.

8. A current-carrying alarm device for a power transmission line, characterized in that: include: Configuration parameter query module, used to query the configuration parameters related to current carrying in the transmission line; A first variable value setting module, used to set a predicted first variable value for the environment in which the transmission line is located; A first current carrying capacity calculation module, used for calculating a first current carrying capacity allowed for each phase of the transmission line according to the first variable value and the configuration parameter; A second variable value acquisition module is used to collect an actual second variable value of the environment in which the transmission line is located during the operation of the transmission line; A second current carrying capacity calculation module, used for calculating the actual second current carrying capacity of each phase of the transmission line according to the second variable value and the configuration parameter; An alarm operation execution module is used to execute an alarm operation on each phase of the transmission line according to the first current carrying capacity and the second current carrying capacity.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, 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 so that the at least one processor can execute the current carrying alarm method for a power transmission line according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the current carrying alarm method for a power transmission line according to any one of claims 1 to 7 is implemented.

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