Current-carrying balancing method and device for parallel cables, computer equipment and storage medium

Abstract

The invention relates to a current-carrying balancing method and device for parallel cables, computer equipment and a storage medium. The method comprises the following steps: acquiring current current data of each cable conductor of parallel cables, and calculating a current error value of each parallel cable based on the current current data of each cable conductor; when the current error value is greater than an error threshold value, generating a control signal of the parallel cables through a control signal generation algorithm based on the current error value of each parallel cable, and identifying a magnetic ring gap adjustment value of the parallel cables based on the control signal; and adjusting the current magnetic ring gap of the parallel cable based on the magnetic ring gap adjustment value to obtain new current data of each cable conductor of the parallel cable, replacing each current current data with each new current data, and returning to execute the above steps until no current error value greater than the error threshold exists. By adopting the method, the current-carrying balance efficiency of the parallel cables can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of current balancing of parallel cables, and in particular to a current balancing method, device, computer equipment and storage medium for parallel cables. Background Art

[0002] In parallel cable systems, current imbalance often occurs due to differences in cable length, contact resistance, and cable parameters (such as resistance and inductance). This imbalance can cause some cables to be overloaded, causing overheating, insulation aging, and even cable damage, seriously affecting the safety and stable operation of the power system. Although existing methods can solve this problem to a certain extent, they are usually complex and costly. Therefore, a more efficient and economical parallel cable current balancing method is needed to solve this problem.

[0003] In the traditional technical research process, the parallel cable system is modeled and simulated through simulation software, and the cable parameters and adjustment strategies are optimized through optimization algorithms (such as genetic algorithms, particle swarm optimization, etc.). However, the implementation technology of the above scheme is relatively complex, and the cost of modeling and simulation is high, which leads to low efficiency of parallel cable current balancing. Summary of the invention

[0004] Based on this, it is necessary to provide a current balancing method, device, computer equipment, computer readable storage medium and computer program product for parallel cables to address the above technical problems.

[0005] In a first aspect, the present application provides a current balancing method for parallel cables. The method comprises:

[0006] Acquire current current data of each cable conductor of the parallel cables, and calculate the current error value of each parallel cable based on the current current data of each cable conductor;

[0007] When there is a current error value greater than an error threshold, based on the current error value of each of the parallel cables, a control signal of the parallel cable is generated by a control signal generation algorithm, and based on the control signal, a magnetic ring gap adjustment value of the parallel cable is identified;

[0008] Based on the magnetic ring gap adjustment value, the current magnetic ring gap of the parallel cable is adjusted to obtain new current data for each cable conductor of the parallel cable, and each new current data replaces the current current data, and returns to execute the step of calculating the current error value of each parallel cable based on the current current data of each cable conductor and the preset target current data of each cable conductor, until there is no current error value greater than the error threshold, and it is determined that the current carrying capacity of the three-phase parallel electrical connection is balanced.

[0009] Optionally, the calculating the current error value of each parallel cable based on the current current data of each cable conductor includes:

[0010] Calculating a current deviation value of the parallel cables based on current current data of each cable conductor of the parallel cables;

[0011] The target current deviation value of each parallel cable is collected, and the current error value of each parallel cable is calculated based on the current deviation value of each parallel cable and the target current deviation value of each parallel cable.

[0012] Optionally, the control signal generation algorithm includes a proportional control algorithm, an integral control algorithm, and a differential control algorithm; the control signal of the parallel cables is generated by the control signal generation algorithm based on the current error value of each of the parallel cables, including:

[0013] Based on the current error value of each of the parallel cables, calculating the error adjustment control signal of the parallel cables through the proportional control algorithm;

[0014] Based on the current error value of each of the parallel cables, the steady-state error control signal of the parallel cables is calculated by the integral control algorithm, and based on the current error value of each of the phases, the predicted error control signal of the parallel cables is calculated by the differential control algorithm;

[0015] The sum of the error adjustment control signal, the steady-state error control signal, and the prediction error control signal is used as the control signal of the parallel cable.

[0016] Optionally, based on the control signal, identifying

[0017] The magnetic ring gap adjustment values ​​of the parallel cables include:

[0018] Acquire the current magnetic ring gap value of the parallel cable, and calculate the target magnetic ring gap value of the three-phase cable based on the control signal;

[0019] Based on the target magnetic ring gap value and the current magnetic ring gap value, a gap deviation value is calculated, and based on the gap deviation value, the magnetic ring gap adjustment value of the parallel cable is calculated through the magnetic ring position adjustment algorithm.

[0020] Optionally, adjusting the current magnetic ring gap of the parallel cables based on the magnetic ring gap adjustment value to obtain new current data of each cable conductor of the parallel cables includes:

[0021] Based on the magnetic ring gap adjustment value, adjust the current magnetic ring gap of the parallel cable to obtain a new magnetic ring gap value of the parallel cable, and re-collect the re-measured current data of each cable conductor of the parallel cable;

[0022] Based on the re-measured current data of each cable conductor, new current data of each cable conductor of the parallel cables is identified through a current feedback algorithm.

[0023] Optionally, after obtaining the current current data of each cable conductor of the parallel cables, the method further includes:

[0024] Acquiring a current magnetic permeability of the parallel cable, and identifying a magnetic ring working state of the magnetic ring based on the current magnetic permeability;

[0025] When the working state of the magnetic ring is a magnetic saturation state, generating fault warning information and a magnetic ring emergency adjustment strategy;

[0026] Based on the magnetic ring emergency adjustment strategy, the parallel cables are adjusted and the fault warning information is sent to the client of the staff.

[0027] In a second aspect, the present application also provides a current balancing device for parallel cables. The device comprises:

[0028] An acquisition module, used for acquiring current current data of each cable conductor of the parallel cables, and calculating a current error value of each parallel cable based on the current current data of each cable conductor;

[0029] A generating module, configured to generate a control signal of the parallel cables through a control signal generating algorithm based on the current error value of each of the parallel cables when there is a current error value greater than an error threshold, and to identify a magnetic ring gap adjustment value of the parallel cables based on the control signal;

[0030] An iterative module is used to adjust the current magnetic ring gap of the parallel cable based on the magnetic ring gap adjustment value, obtain new current data of each cable conductor of the parallel cable, replace each current current data with each new current data, and return to execute the step of calculating the current error value of each parallel cable based on the current current data of each cable conductor and the preset target current data of each cable conductor, until there is no current error value greater than the error threshold, and it is determined that the current carrying capacity of the three-phase parallel electrical connection is balanced.

[0031] Optionally, the acquisition module is specifically used to:

[0032] Calculating a current deviation value of the parallel cables based on current current data of each cable conductor of the parallel cables;

[0033] The target current deviation value of each parallel cable is collected, and the current error value of each parallel cable is calculated based on the current deviation value of each parallel cable and the target current deviation value of each parallel cable.

[0034] Optionally, the generating module is specifically used for:

[0035] Based on the current error value of each of the parallel cables, calculating the error adjustment control signal of the parallel cables through the proportional control algorithm;

[0036] Based on the current error value of each of the parallel cables, the steady-state error control signal of the parallel cables is calculated by the integral control algorithm, and based on the current error value of each of the phases, the predicted error control signal of the parallel cables is calculated by the differential control algorithm;

[0037] The sum of the error adjustment control signal, the steady-state error control signal, and the prediction error control signal is used as the control signal of the parallel cable.

[0038] Optionally, the generating module is specifically used for:

[0039] Acquire the current magnetic ring gap value of the parallel cable, and calculate the target magnetic ring gap value of the three-phase cable based on the control signal;

[0040] Based on the target magnetic ring gap value and the current magnetic ring gap value, a gap deviation value is calculated, and based on the gap deviation value, the magnetic ring gap adjustment value of the parallel cable is calculated through the magnetic ring position adjustment algorithm.

[0041] Optionally, the iteration module is specifically used for:

[0042] Based on the magnetic ring gap adjustment value, adjust the current magnetic ring gap of the parallel cable to obtain a new magnetic ring gap value of the parallel cable, and re-collect the re-measured current data of each cable conductor of the parallel cable;

[0043] Based on the re-measured current data of each cable conductor, new current data of each cable conductor of the parallel cables is identified through a current feedback algorithm.

[0044] Optionally, the device further comprises:

[0045] An identification module, used for acquiring the current magnetic permeability of the parallel cable, and identifying the magnetic ring working state of the magnetic ring based on the current magnetic permeability;

[0046] An emergency module, used for generating fault warning information and an emergency adjustment strategy for the magnetic ring when the working state of the magnetic ring is a magnetic saturation state;

[0047] The sending module is used to adjust the parallel cables based on the magnetic ring emergency adjustment strategy and send the fault warning information to the client of the staff.

[0048] In a third aspect, the present application provides a computer device, wherein the computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of any one of the methods in the first aspect are implemented.

[0049] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of any one of the methods in the first aspect are implemented.

[0050] In a fifth aspect, the present application provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the steps of any one of the methods in the first aspect are implemented.

[0051] The current balancing method, device, computer equipment and storage medium of the parallel cables are as follows: the current data of each cable conductor of the parallel cables are obtained, and the current error value of each parallel cable is calculated based on the current current data of each cable conductor; when there is a current error value greater than an error threshold, a control signal of the parallel cable is generated based on the current error value of each parallel cable through a control signal generation algorithm, and the magnetic ring gap adjustment value of the parallel cable is identified based on the control signal; based on the magnetic ring gap adjustment value, the current magnetic ring gap of the parallel cable is adjusted to obtain new current data of each cable conductor of the parallel cable, and each new current data is used to replace each current current data, and the step of calculating the current error value of each parallel cable based on the current current data of each cable conductor and the preset target current data of each cable conductor is returned to execute, until there is no current error value greater than the error threshold, and it is determined that the current of the three-phase parallel electrical connection is balanced. This solution collects the current data of each cable conductor in real time, thereby calculating the current error value of each parallel cable to generate the magnetic ring control signal of the parallel cable, thereby achieving precise adjustment of the magnetic ring position and dynamic balance of current distribution. When generating the control signal, the required equivalent permeability change is first calculated according to the current balance target, and then the target magnetic ring gap is determined by the formula, and then converted into the target position of the drive device; the adjusted equivalent permeability is expressed by the formula, and the adjustment also includes the change of the inductance and resistance of the cable. By accurately adjusting these parameters, the balance of current distribution is achieved, avoiding the high cost, complex calculation and low efficiency of modeling, simulation, and adjustment optimization in traditional current distribution balance. Therefore, by only generating and adjusting the magnetic ring control signal, the current carrying value between the cables of the entire parallel cable is dynamically balanced, which not only reduces the complexity of balance, but also improves the efficiency of current carrying balance of parallel cables while ensuring the accuracy of balance. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic flow chart of a current balancing method for parallel cables in one embodiment;

[0053] Figure 2 A schematic diagram of a flow chart of an example of current balancing of parallel cables in one embodiment;

[0054] Figure 3 is a structural block diagram of a current balancing device for parallel cables in one embodiment;

[0055] Figure 4 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0057] The current balancing method of parallel cables provided in the embodiment of the present application can be applied to the application environment of current balancing of parallel cables. The method can be applied to a terminal, a server, or a system including a terminal and a server, and is implemented through the interaction between the terminal and the server. Among them, the terminal is a current balancing control system for parallel cables in the same direction. The terminal collects the current data of each cable conductor in real time, thereby calculating the current error value of each parallel cable to generate a magnetic ring control signal of the parallel cable, thereby achieving precise adjustment of the magnetic ring position and dynamic balance of current distribution, and when generating the control signal, the required equivalent permeability change is first calculated according to the current balance target, and then the target magnetic ring gap is determined by a formula, and then converted into the target position of the drive device; the adjusted equivalent permeability is represented by a formula, and the adjustment also includes changes in the inductance and resistance of the cable. By accurately adjusting these parameters, the balance of current distribution is achieved, avoiding the high cost, complex calculation, and low efficiency of modeling, simulation, and adjustment optimization during traditional current distribution balance. Therefore, by only generating and adjusting the magnetic ring control signal, the current-carrying values ​​between the cables of the entire parallel cable are dynamically balanced, which not only reduces the complexity of balancing, but also improves the efficiency of current-carrying balancing of parallel cables while ensuring the accuracy of balancing.

[0058] In one embodiment, Figure 1 As shown, a current balancing method for parallel cables is provided, and the method is applied to a terminal as an example for explanation, including the following steps:

[0059] Step S101 , obtaining current current data of each cable conductor of the parallel cables, and calculating the current error value of each parallel cable based on the current current data of each cable conductor.

[0060] In this embodiment, the terminal receives the current detected in real time by the current sensor of each cable conductor of each phase of the same-phase parallel cable, and obtains the current current data of each cable conductor, wherein each phase includes two parallel cable conductors. Then, the terminal calculates the current error value of each parallel cable based on the current data of each cable conductor, wherein the current error value is the error between the actual current of the current difference between the two parallel cable conductors of each phase and the preset target current. The specific calculation process will be described in detail later.

[0061] Step S102, when there is a current error value greater than the error threshold, based on the current error value of each parallel cable, a control signal of the parallel cable is generated through a control signal generation algorithm, and based on the control signal, the magnetic ring gap adjustment value of the parallel cable is identified.

[0062] In this embodiment, the terminal presets an error threshold, and when there is a current error value greater than the error threshold, based on the current error value of each parallel cable, a control signal of the parallel cable is generated through a control signal generation algorithm, and based on the control signal, the magnetic ring gap adjustment value of the parallel cable is identified. The signal generation algorithm is a control signal generation algorithm corresponding to a PID (Proportional, Integral, Derivative) controller. The specific control signal generation process will be described in detail later. The control signal is a comprehensive control signal for controlling the magnetic ring gap adjustment, including an error adjustment control signal, a steady-state error control signal, and a predicted error control signal.

[0063] Step S103, based on the magnetic ring gap adjustment value, adjust the current magnetic ring gap of the parallel cable to obtain new current data of each cable conductor of the parallel cable, and replace each current current data with each new current data, return to execute the step of calculating the current error value of each parallel cable based on the current current data of each cable conductor and the preset target current data of each cable conductor, until there is no current error value greater than the error threshold, it is determined that the current carrying capacity of the three-phase parallel electrical connection is balanced.

[0064] In this embodiment, the terminal adjusts the current magnetic ring gap of the parallel cable based on the magnetic ring gap adjustment value, obtains new current data for each cable conductor of the parallel cable, replaces the current current data with each new current data, and returns to execute the step of calculating the current error value of each parallel cable based on the current current data of each cable conductor and the preset target current data of each cable conductor, until there is no current error value greater than the error threshold, and it is determined that the current carrying capacity of the three-phase parallel electrical connection is balanced.

[0065] Based on the above scheme, the current error value of each parallel cable is calculated by real-time acquisition of the current data of each cable conductor to generate the magnetic ring control signal of the parallel cable, so as to achieve the precise adjustment of the magnetic ring position and the dynamic balance of the current distribution. When generating the control signal, the required equivalent permeability change is first calculated according to the current balance target, and then the target magnetic ring gap is determined by the formula, and then converted into the target position of the drive device; the adjusted equivalent permeability is represented by the formula, and the adjustment also includes the change of the inductance and resistance of the cable. By accurately adjusting these parameters, the balance of current distribution is achieved, avoiding the high cost, complex calculation and low efficiency of modeling, simulation and adjustment optimization in traditional current distribution balance. Therefore, by only generating and adjusting the magnetic ring control signal, the current carrying value between the cables of the entire parallel cable is dynamically balanced, which not only reduces the complexity of balance, but also improves the efficiency of current carrying balance of parallel cables while ensuring the accuracy of balance.

[0066] Optionally, the current error value of each parallel cable is calculated based on the current current data of each cable conductor, including: calculating the current deviation value of the parallel cables based on the current current data of each cable conductor of the parallel cables; collecting the target current deviation value of each parallel cable, and calculating the current error value of each parallel cable based on the current deviation value of each parallel cable and the target current deviation value of each parallel cable.

[0067] In this embodiment, the terminal calculates the current deviation value of the parallel cables based on the current current data of each cable conductor of the parallel cables. The calculation formula of the above deviation value is:

[0068] e(t)=I measure，1 -I measure，2

[0069] I measure =I(t)

[0070] In the above formula, I measure is the real-time measured ground current value, e(t) is the current difference at time t, I measure，1 and I measure，2 are the current values ​​measured in the two sub-cables of the same phase.

[0071] The terminal collects the target current deviation value of each parallel cable, and calculates the current error value of each parallel cable based on the current deviation value of each parallel cable and the target current deviation value of each parallel cable.

[0072] Based on the above scheme, by calculating the current difference between the parallel cables, the deviation between the current system state and the ideal state can be quantified, providing data basis for subsequent control operations.

[0073] Optionally, the control signal generating algorithm includes a proportional control algorithm, an integral control algorithm, and a differential control algorithm; based on the current error value of each parallel cable, a control signal of the parallel cable is generated through the control signal generating algorithm, including: based on the current error value of each parallel cable, through a proportional control algorithm, calculating the error adjustment control signal of the parallel cable; based on the current error value of each parallel cable, through an integral control algorithm, calculating the steady-state error control signal of the parallel cable, and based on the current error value of each phase, through a differential control algorithm, calculating the predicted error control signal of the parallel cable; using the sum of the error adjustment control signal, the steady-state error control signal, and the predicted error control signal as the control signal of the parallel cable.

[0074] In this embodiment, the terminal calculates the error adjustment control signal of the parallel cables through a proportional control algorithm based on the current error value of each parallel cable; the terminal calculates the steady-state error control signal of the parallel cables through an integral control algorithm based on the current error value of each parallel cable, and calculates the predicted error control signal of the parallel cables through a differential control algorithm based on the current error value of each phase. Finally, the terminal uses the sum of the error adjustment control signal, the steady-state error control signal, and the predicted error control signal as the control signal of the parallel cables.

[0075] Among them, the control signal generation algorithm is:

[0076]

[0077] In the above formula, K p is the proportional gain. Proportional control quickly responds to the current error, reduces response time, and improves control accuracy; K i is the integral gain. Integral control eliminates the steady-state error of the system and ensures the accuracy of the system in long-term operation; K d is the differential gain. The differential control predicts the error change trend, suppresses system oscillation, and improves system stability. p e(t) is the proportional control algorithm, For the integral control algorithm, is the differential control algorithm, and u(T) is the control signal.

[0078] Based on the above scheme, the terminal forms a total control signal u(t) by superimposing the control signals of the above three parts, thereby improving the accuracy of the magnetic ring gap adjustment.

[0079] Optionally, based on the control signal, the magnetic ring gap adjustment value of the parallel cable is identified, including: obtaining the current magnetic ring gap value of the parallel cable, and controlling the signal to calculate the target magnetic ring gap value of the three-phase cable; calculating the gap deviation value based on the target magnetic ring gap value and the current magnetic ring gap value, and based on the gap deviation value, calculating the magnetic ring gap adjustment value of the parallel cable through a magnetic ring position adjustment algorithm.

[0080] In this embodiment, the terminal obtains the current magnetic ring gap value of the parallel cable, and controls the signal to calculate the target magnetic ring gap value of the three-phase cable. Then, the terminal calculates the gap deviation value based on the target magnetic ring gap value and the current magnetic ring gap value, and calculates the magnetic ring gap adjustment value of the parallel cable based on the gap deviation value through the magnetic ring position adjustment algorithm.

[0081] Specifically, the terminal determines the gap g of the target magnetic ring set,1 and g set,2 ,Adjusting the magnetic ring gap g directly affects the equivalent magnetic permeability μ of the cable, ,which in turn affects the inductance and resistance of the cable, and ultimately achieves a balanced current distribution.

[0082] μ new (t) = F1(Δu(t))

[0083]

[0084] Then, the terminal sets the target magnetic ring gap g set Transformed into the target position x of the drive set .

[0085] x set (t) = f2(g set (t))

[0086] The terminal uses a PID controller to adjust the actual position x(t) and the target position x set Calculate the position error e(t).

[0087] e x (t) = x set (txt)

[0088] The terminal generates a new control signal u according to the position error e(t) through the PID controller new (t) to further adjust the magnetic ring position.

[0089]

[0090] Based on the above scheme, through the above steps, the terminal dynamically adjusts the control signal u through the PID controller new(t), drives the magnetic ring adjustment mechanism to accurately adjust the magnetic ring gap, thereby changing the equivalent magnetic permeability, inductance and resistance of the cable to achieve a balanced current distribution.

[0091] Optionally, based on the magnetic ring gap adjustment value, the current magnetic ring gap of the parallel cables is adjusted to obtain new current data for each cable conductor of the parallel cables, including: based on the magnetic ring gap adjustment value, the current magnetic ring gap of the parallel cables is adjusted to obtain new magnetic ring gap values ​​for the parallel cables, and re-collecting re-measured current data for each cable conductor of the parallel cables; based on the re-measured current data of each cable conductor, new current data for each cable conductor of the parallel cables is identified through a current feedback algorithm.

[0092] In this embodiment, the terminal adjusts the current magnetic ring gap of the parallel cable based on the magnetic ring gap adjustment value, obtains a new magnetic ring gap value of the parallel cable, and re-collects the re-measured current data of each cable conductor of the parallel cable. Finally, the terminal identifies the new current data of each cable conductor of the parallel cable through a current feedback algorithm based on the re-measured current data of each cable conductor.

[0093] Among them, the current feedback algorithm is:

[0094] I feedback =f3(I adjusted )

[0095] In the above formula, I feedback (t) is the current value in the feedback loop, I adjusted (t) is the adjusted current value.

[0096] Based on the above scheme, by performing feedback calculation on the re-measured current value, it is ensured that the control system of the same-phase parallel cables can continuously correct and optimize the control strategy, thereby improving the stable control effect of the same-phase parallel cables.

[0097] Optionally, after obtaining the current current data of each cable conductor of the parallel cable, it also includes: obtaining the current magnetic permeability of the parallel cable, and identifying the magnetic ring working state of the magnetic ring based on the current magnetic permeability; when the working state of the magnetic ring is a magnetic saturation state, generating fault warning information and a magnetic ring emergency adjustment strategy; based on the magnetic ring emergency adjustment strategy, adjusting the parallel cables, and sending the fault warning information to the staff's client.

[0098] In this embodiment, the terminal obtains the current magnetic permeability of the parallel cable, and identifies the magnetic ring working state of the magnetic ring based on the current magnetic permeability. Then, when the working state of the magnetic ring is a magnetic saturation state, the terminal generates fault warning information and a magnetic ring emergency adjustment strategy. The fault warning information can be a warning signal preset in the terminal, and when the working state of the magnetic ring is a magnetic saturation state, the terminal directly sends the warning signal to the client of the staff. The magnetic ring emergency adjustment strategy includes an automatically adjusted magnetic ring gap value and emergency intelligent load reduction measures preset in the terminal by other staff, and the emergency intelligent load reduction measures are measures for intelligently adjusting the current carrying capacity between parallel cables. The measure can be preset in the terminal by the staff, and when the working state of the magnetic ring is a magnetic saturation state, it serves as a start signal for the measure. The working state of the magnetic ring includes a magnetic saturation state and a normal state. The cause of the magnetic saturation state is that the magnetic ring fails to be magnetically saturated due to excessive current, thereby generating a magnetic saturation state.

[0099] Finally, the terminal adjusts the parallel cables based on the magnetic ring emergency adjustment strategy and sends the fault warning information to the staff's client.

[0100] Based on the above scheme, when the magnetic saturation state is detected, the magnetic ring gap can be automatically adjusted or other load reduction measures can be taken to reduce the impact of magnetic saturation, ensure the safe operation of the same-direction parallel cables, and improve the emergency handling efficiency of the same-direction parallel cables.

[0101] The present application also provides an example of current balancing of parallel cables, such as Figure 2 As shown, the specific processing process includes the following steps:

[0102] Step S201, obtaining current data of each cable conductor of the parallel cables.

[0103] Step S202, calculating the current deviation value of the parallel cables based on the current current data of each cable conductor of the parallel cables.

[0104] Step S203: collecting the target current deviation value of each parallel cable, and calculating the current error value of each parallel cable based on the current deviation value of each parallel cable and the target current deviation value of each parallel cable.

[0105] Step S204, based on the current error value of each parallel cable, an error adjustment control signal of the parallel cables is calculated by a proportional control algorithm.

[0106] Step S205, based on the current error value of each parallel cable, the steady-state error control signal of the parallel cable is calculated by an integral control algorithm, and based on the current error value of each phase, the predicted error control signal of the parallel cable is calculated by a differential control algorithm.

[0107] Step S206: taking the sum of the error adjustment control signal, the steady-state error control signal, and the prediction error control signal as the control signal of the parallel cable.

[0108] Step S207, obtaining the current magnetic ring gap value of the parallel cable, and calculating the target magnetic ring gap value of the three-phase cable based on the control signal.

[0109] Step S208, calculating the gap deviation value based on the target magnetic ring gap value and the current magnetic ring gap value, and calculating the magnetic ring gap adjustment value of the parallel cable based on the gap deviation value through the magnetic ring position adjustment algorithm.

[0110] Step S209, based on the magnetic ring gap adjustment value, adjust the current magnetic ring gap of the parallel cable to obtain a new magnetic ring gap value of the parallel cable, and re-collect the re-measured current data of each cable conductor of the parallel cable.

[0111] Step S210 , based on the re-measured current data of each cable conductor, new current data of each cable conductor of the parallel cables is identified through a current feedback algorithm.

[0112] Step S211, replaces each current data with each new current data, returns to execute the step of calculating the current error value of each parallel cable based on the current current data of each cable conductor and the preset target current data of each cable conductor, until there is no current error value greater than the error threshold, and determines that the current carrying capacity of the three-phase parallel electrical connection is balanced.

[0113] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0114] Based on the same inventive concept, the embodiment of the present application also provides a current balancing device for parallel cables for implementing the current balancing method for parallel cables involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of one or more current balancing devices for parallel cables provided below can refer to the limitations of the current balancing method for parallel cables above, and will not be repeated here.

[0115] In one embodiment, Figure 3 As shown, a current balancing device for parallel cables is provided, comprising: an acquisition module 310, a generation module 320 and an iteration module 330, wherein:

[0116] An acquisition module 310 is used to acquire current current data of each cable conductor of the parallel cables, and calculate a current error value of each parallel cable based on the current current data of each cable conductor;

[0117] A generating module 320, configured to generate a control signal of the parallel cable through a control signal generating algorithm based on the current error value of each of the parallel cables when the current error value is greater than the error threshold, and to identify a magnetic ring gap adjustment value of the parallel cable based on the control signal;

[0118] The iterative module 330 is used to adjust the current magnetic ring gap of the parallel cable based on the magnetic ring gap adjustment value, obtain new current data of each cable conductor of the parallel cable, and replace the current current data with each new current data, and return to execute the step of calculating the current error value of each parallel cable based on the current current data of each cable conductor and the preset target current data of each cable conductor, until there is no current error value greater than the error threshold, and it is determined that the current carrying capacity of the three-phase parallel electrical connection is balanced.

[0119] Optionally, the acquisition module 310 is specifically configured to:

[0120] Calculating a current deviation value of the parallel cables based on current current data of each cable conductor of the parallel cables;

[0121] The target current deviation value of each parallel cable is collected, and the current error value of each parallel cable is calculated based on the current deviation value of each parallel cable and the target current deviation value of each parallel cable.

[0122] Optionally, the generating module 320 is specifically configured to:

[0123] Based on the current error value of each of the parallel cables, calculating the error adjustment control signal of the parallel cables through the proportional control algorithm;

[0124] Based on the current error value of each of the parallel cables, the steady-state error control signal of the parallel cables is calculated by the integral control algorithm, and based on the current error value of each of the phases, the predicted error control signal of the parallel cables is calculated by the differential control algorithm;

[0125] The sum of the error adjustment control signal, the steady-state error control signal, and the prediction error control signal is used as the control signal of the parallel cable.

[0126] Optionally, the generating module 320 is specifically configured to:

[0127] Acquire the current magnetic ring gap value of the parallel cable, and calculate the target magnetic ring gap value of the three-phase cable based on the control signal;

[0128] Based on the target magnetic ring gap value and the current magnetic ring gap value, a gap deviation value is calculated, and based on the gap deviation value, the magnetic ring gap adjustment value of the parallel cable is calculated through the magnetic ring position adjustment algorithm.

[0129] Optionally, the iteration module 330 is specifically configured to:

[0130] Based on the magnetic ring gap adjustment value, adjust the current magnetic ring gap of the parallel cable to obtain a new magnetic ring gap value of the parallel cable, and re-collect the re-measured current data of each cable conductor of the parallel cable;

[0131] Based on the re-measured current data of each cable conductor, new current data of each cable conductor of the parallel cables is identified through a current feedback algorithm.

[0132] Optionally, the device further comprises:

[0133] An identification module, used for acquiring the current magnetic permeability of the parallel cable, and identifying the magnetic ring working state of the magnetic ring based on the current magnetic permeability;

[0134] An emergency module, used for generating fault warning information and an emergency adjustment strategy for the magnetic ring when the working state of the magnetic ring is a magnetic saturation state;

[0135] The sending module is used to adjust the parallel cables based on the magnetic ring emergency adjustment strategy and send the fault warning information to the client of the staff.

[0136] Each module in the current balancing device for parallel cables can be implemented in whole or in part by software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0137] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Figure 4As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a current balancing method for parallel cables is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covered on the display screen, or a key, trackball or touchpad set on the computer device housing, or an external keyboard, touchpad or mouse, etc.

[0138] Those skilled in the art will understand that Figure 4 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0139] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the steps of any one of the methods in the first aspect are implemented.

[0140] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of any one of the methods in the first aspect are implemented.

[0141] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the steps of any one of the methods in the first aspect.

[0142] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0143] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0144] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0145] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the present application. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A current balancing method for parallel cables, characterized in that: The method comprises: Acquire current current data of each cable conductor of the parallel cables, and calculate the current error value of each parallel cable based on the current current data of each cable conductor; When there is a current error value greater than an error threshold, based on the current error value of each of the parallel cables, a control signal of the parallel cable is generated by a control signal generation algorithm, and based on the control signal, a magnetic ring gap adjustment value of the parallel cable is identified; Based on the magnetic ring gap adjustment value, the current magnetic ring gap of the parallel cable is adjusted to obtain new current data for each cable conductor of the parallel cable, and each new current data replaces the current current data, and returns to execute the step of calculating the current error value of each parallel cable based on the current current data of each cable conductor and the preset target current data of each cable conductor, until there is no current error value greater than the error threshold, and it is determined that the current carrying capacity of the three-phase parallel electrical connection is balanced.

2. The method according to claim 1, characterized in that The calculating the current error value of each parallel cable based on the current current data of each cable conductor includes: Calculating a current deviation value of the parallel cables based on current current data of each cable conductor of the parallel cables; The target current deviation value of each parallel cable is collected, and the current error value of each parallel cable is calculated based on the current deviation value of each parallel cable and the target current deviation value of each parallel cable.

3. The method according to claim 2, characterized in that The control signal generation algorithm includes a proportional control algorithm, an integral control algorithm, and a differential control algorithm; the control signal of the parallel cable is generated by the control signal generation algorithm based on the current error value of each of the parallel cables, including: Based on the current error value of each of the parallel cables, calculating the error adjustment control signal of the parallel cables through the proportional control algorithm; Based on the current error value of each of the parallel cables, the steady-state error control signal of the parallel cables is calculated by the integral control algorithm, and based on the current error value of each of the phases, the predicted error control signal of the parallel cables is calculated by the differential control algorithm; The sum of the error adjustment control signal, the steady-state error control signal, and the prediction error control signal is used as the control signal of the parallel cable.

4. The method according to claim 1, characterized in that: The step of identifying the magnetic ring gap adjustment value of the parallel cable based on the control signal includes: Acquire the current magnetic ring gap value of the parallel cable, and calculate the target magnetic ring gap value of the three-phase cable based on the control signal; Based on the target magnetic ring gap value and the current magnetic ring gap value, a gap deviation value is calculated, and based on the gap deviation value, the magnetic ring gap adjustment value of the parallel cable is calculated through the magnetic ring position adjustment algorithm.

5. The method according to claim 1, characterized in that The step of adjusting the current magnetic ring gap of the parallel cables based on the magnetic ring gap adjustment value to obtain new current data of each cable conductor of the parallel cables includes: Based on the magnetic ring gap adjustment value, adjust the current magnetic ring gap of the parallel cable to obtain a new magnetic ring gap value of the parallel cable, and re-collect the re-measured current data of each cable conductor of the parallel cable; Based on the re-measured current data of each cable conductor, new current data of each cable conductor of the parallel cables is identified through a current feedback algorithm.

6. The method according to claim 1, characterized in that After obtaining the current data of each cable conductor of the parallel cables, the method further includes: Acquire the current magnetic permeability of the parallel cable, and identify the magnetic ring working state of the magnetic ring based on the current magnetic permeability; When the working state of the magnetic ring is a magnetic saturation state, generating fault warning information and a magnetic ring emergency adjustment strategy; Based on the magnetic ring emergency adjustment strategy, the parallel cables are adjusted and the fault warning information is sent to the client of the staff.

7. A current balancing device for parallel cables, characterized in that: The device comprises: An acquisition module, used for acquiring current current data of each cable conductor of the parallel cables, and calculating a current error value of each parallel cable based on the current current data of each cable conductor; A generating module, configured to generate a control signal of the parallel cables through a control signal generating algorithm based on the current error value of each of the parallel cables when there is a current error value greater than an error threshold, and to identify a magnetic ring gap adjustment value of the parallel cables based on the control signal; An iterative module is used to adjust the current magnetic ring gap of the parallel cable based on the magnetic ring gap adjustment value, obtain new current data of each cable conductor of the parallel cable, and replace each current current data with each new current data, and return to execute the step of calculating the current error value of each parallel cable based on the current current data of each cable conductor and the preset target current data of each cable conductor, until there is no current error value greater than the error threshold, and it is determined that the current carrying capacity of the three-phase parallel electrical connection is balanced.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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