Parallel cable harmonic processing method, device, computer equipment, readable storage medium and program product

Abstract

The present application relates to a parallel cable harmonic processing method, device, computer equipment, readable storage medium and program product, and relates to the field of electrical engineering technology. The method includes: in response to a harmonic processing instruction for a target parallel cable, obtaining the harmonic current of each target cable in the target parallel cable; when the harmonic frequency of the harmonic current reaches the first harmonic frequency threshold, shunting the harmonic current from the circuit where the target cable is located to a branch circuit that matches the target cable; if there is a residual harmonic current in the target current, and the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold, current compensation is performed on the residual harmonic current. The use of this method can ensure the safe and stable operation of the parallel cable.

Description

Technical Field

[0001] The present application relates to the field of electrical engineering technology, and in particular to a method, device, computer equipment, readable storage medium and program product for processing harmonics of parallel cables. Background Art

[0002] With the development of modern power systems, especially in high voltage and ultra-high voltage transmission systems, long-distance power transmission and large-capacity load transmission have put forward higher requirements on cable technology.

[0003] In these high-voltage power transmission scenarios, multiple cables are usually connected in parallel to share the load in order to improve the efficiency and reliability of power transmission. However, the presence of harmonics in parallel cables may lead to a series of technical problems, such as cable heating, reduced power transmission efficiency, and electromagnetic interference of electrical equipment. Therefore, how to effectively handle harmonics to ensure the stable operation of parallel cables has become an urgent problem to be solved in parallel cables. Summary of the invention

[0004] Based on this, it is necessary to provide a parallel cable harmonic processing method, device, computer equipment, computer-readable storage medium and computer program product that can ensure the stable operation of parallel cables in response to the above technical problems.

[0005] In a first aspect, the present application provides a parallel cable harmonic processing method, comprising: in response to a harmonic processing instruction for a target parallel cable, obtaining a target current for each target cable in the target parallel cable; the target current includes a harmonic current; for each harmonic current, when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, shunting the harmonic current from the circuit where the target cable is located to a branch circuit matching the target cable to obtain a harmonic current shunting result; when the harmonic current shunting result indicates that the harmonic current has been shunted into the branch circuit, performing harmonic detection on the target current to obtain a harmonic detection result; if the harmonic detection result indicates that there is residual harmonic current in the target current, and the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold, current compensation is performed on the residual harmonic current to obtain a harmonic current compensation result of the residual harmonic current; and each harmonic current shunting result and each harmonic current compensation result are used together as the harmonic processing result of the target parallel cable.

[0006] In one of the embodiments, current compensation is performed on the residual harmonic current to obtain a harmonic current compensation result of the residual harmonic current, including: obtaining the harmonic amplitude and harmonic phase parameters of the residual harmonic current; determining a harmonic anti-phase parameter that is opposite to the harmonic phase parameter; performing current compensation analysis on the residual harmonic current based on the harmonic anti-phase parameter and the harmonic amplitude to obtain a compensation current of the residual harmonic current; and using the compensation current as the harmonic current compensation result of the residual harmonic current.

[0007] In one of the embodiments, the method also includes: screening key cable nodes from each candidate cable node of the target parallel cable; when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, shunting the harmonic current from the circuit where the target cable is located to a branch circuit that matches the target cable, including: at the key cable node, when the harmonic frequency of the harmonic current exceeds the first harmonic frequency threshold, shunting the harmonic current from the circuit where the target cable is located to a branch circuit that matches the target cable.

[0008] In one of the embodiments, the method also includes: respectively obtaining harmonic current parameter information of each harmonic current; based on the harmonic current parameter information, determining whether the harmonic currents are evenly distributed; if the harmonic currents are unevenly distributed, performing harmonic current distribution on the target parallel cable to obtain the harmonic current distribution result of the target parallel cable.

[0009] In one of the embodiments, the method also includes: obtaining the harmonic processing requirement of the harmonic processing instruction; based on the harmonic processing requirement, performing layout optimization and heat dissipation optimization on the target parallel cable to obtain the layout optimization result and heat dissipation optimization result of the target parallel cable; the layout optimization result refers to the result obtained by optimizing the layout structure between each target cable in the target parallel cable; the heat dissipation optimization result refers to the result obtained by optimizing the heat dissipation structure of each target cable in the target parallel cable.

[0010] In one of the embodiments, the method further includes: acquiring operating data of the target parallel cable; based on the operating data, predicting the service life of the electrical equipment matching the target parallel cable to obtain a life prediction result of the electrical equipment; and the life prediction result is used to characterize the remaining service life of the electrical equipment.

[0011] In a second aspect, the present application further provides a parallel cable harmonic processing device, comprising: a harmonic current acquisition module, for responding to a harmonic processing instruction for a target parallel cable, to acquire a target current of each target cable in the target parallel cable; the target current includes a harmonic current; a harmonic current shunting module, for, for each harmonic current, when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, shunting the harmonic current from the circuit where the target cable is located to a branch circuit matching the target cable, to obtain a harmonic current shunting result; a harmonic detection module, for When the harmonic current shunting result indicates that the harmonic current has been shunted into the branch circuit, the target current is subjected to harmonic detection to obtain the harmonic detection result; the harmonic cable compensation module is used to, if the harmonic detection result indicates that there is residual harmonic current in the target current and the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold, perform current compensation on the residual harmonic current to obtain the harmonic current compensation result of the residual harmonic current; the harmonic processing result generation module is used to use the harmonic current shunting results and the harmonic current compensation results together as the harmonic processing result of the target parallel cable.

[0012] In a third aspect, the present application also provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the following steps when executing the computer program: in response to a harmonic processing instruction for a target parallel cable, obtaining a target current for each target cable in the target parallel cable; the target current includes a harmonic current; for each harmonic current, when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, shunting the harmonic current from the circuit where the target cable is located to a branch circuit matching the target cable to obtain a harmonic current shunting result; when the harmonic current shunting result indicates that the harmonic current has been shunted into the branch circuit, performing harmonic detection on the target current to obtain a harmonic detection result; if the harmonic detection result indicates that there is residual harmonic current in the target current, and the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold, performing current compensation on the residual harmonic current to obtain a harmonic current compensation result of the residual harmonic current; and using each harmonic current shunting result and each harmonic current compensation result together as the harmonic processing result of the target parallel cable.

[0013] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which implements the following steps when executed by a processor: in response to a harmonic processing instruction for a target parallel cable, obtaining a target current for each target cable in the target parallel cable; the target current includes a harmonic current; for each harmonic current, when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, shunting the harmonic current from the circuit where the target cable is located to a branch circuit matching the target cable to obtain a harmonic current shunting result; when the harmonic current shunting result indicates that the harmonic current has been shunted into the branch circuit, performing harmonic detection on the target current to obtain a harmonic detection result; if the harmonic detection result indicates that there is residual harmonic current in the target current, and the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold, current compensation is performed on the residual harmonic current to obtain a harmonic current compensation result of the residual harmonic current; and each harmonic current shunting result and each harmonic current compensation result are used together as the harmonic processing result of the target parallel cable.

[0014] In a fifth aspect, the present application also provides a computer program product, comprising a computer program, which implements the following steps when executed by a processor: in response to a harmonic processing instruction for a target parallel cable, obtaining a target current for each target cable in the target parallel cable; the target current includes a harmonic current; for each harmonic current, when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, shunting the harmonic current from the circuit where the target cable is located to a branch circuit matching the target cable to obtain a harmonic current shunting result; when the harmonic current shunting result indicates that the harmonic current has been shunted into the branch circuit, performing harmonic detection on the target current to obtain a harmonic detection result; if the harmonic detection result indicates that there is residual harmonic current in the target current, and the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold, current compensation is performed on the residual harmonic current to obtain a harmonic current compensation result of the residual harmonic current; and each harmonic current shunting result and each harmonic current compensation result are used together as the harmonic processing result of the target parallel cable.

[0015] The above-mentioned parallel cable harmonic processing method, device, computer equipment, computer-readable storage medium and computer program product, in response to the harmonic processing instruction for the target parallel cable, first obtains the harmonic current of each target cable in the target parallel cable. When the harmonic frequency of the harmonic current reaches the first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to the branch circuit that matches the target cable. This can reduce the accumulation and propagation of harmonics in the parallel cable. After the harmonic cable is shunted, if there is still residual harmonic current in the target cable, and the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold, further current compensation is performed on the residual harmonic current to suppress the harmonic current. In this way, the present application performs harmonic processing on the parallel cable from the two aspects of harmonic current shunting and harmonic current compensation, so as to achieve the purpose of reducing or even suppressing harmonic current, thereby ensuring the safe and stable operation of the parallel cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A diagram showing an application environment of a parallel cable harmonic processing method in one embodiment;

[0018] Figure 2 A schematic diagram of a flow chart of a method for processing harmonics of parallel cables in one embodiment;

[0019] Figure 3 is a schematic diagram of a flow chart of harmonic current compensation in one embodiment;

[0020] Figure 4 A schematic diagram of a flow chart of harmonic current distribution balance judgment in one embodiment;

[0021] Figure 5 It is a schematic diagram of a process of optimizing the layout and heat dissipation of parallel cables in one embodiment;

[0022] Figure 6 A schematic diagram of a process for predicting the life of electrical equipment in an embodiment;

[0023] Figure 7 is a structural diagram of a parallel cable in a specific embodiment;

[0024] Figure 8 is a structural block diagram of a parallel cable harmonic processing device in one embodiment;

[0025] Fig. 9 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0026] With the development of modern power systems, especially in high-voltage and ultra-high-voltage transmission systems, long-distance power transmission and large-capacity load transmission have put forward higher requirements for cable technology. In these high-voltage transmission scenarios, multiple cables are usually connected in parallel to share the load to improve the efficiency and reliability of power transmission. However, with the widespread application of nonlinear loads such as rectifiers, inverters, high-power frequency converters, motors, and some other nonlinear electrical equipment, large harmonic currents will be generated. Especially in parallel cables, the presence of harmonics may lead to a series of technical problems, such as cable heating, reduced power transmission efficiency, and electromagnetic interference of electrical equipment. Therefore, how to effectively handle harmonics to ensure the stable operation of parallel cables has become an urgent problem to be solved in parallel cables.

[0027] 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.

[0028] The parallel cable harmonic processing method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. Among them, the terminal 102 communicates with the control center 104 through the network. The data storage system can store the data that the control center 104 needs to process. The data storage system can be integrated in the control center 104, or it can be placed on the cloud or other network servers. The terminal 102 can be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, and Internet of Things devices. The control center 104 can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides cloud computing services.

[0029] Specifically, the control center 104 responds to the harmonic processing instruction for the target parallel cable initiated by the terminal 102, and first obtains the target current of each target cable in the target parallel cable; the target current includes harmonic current; for each harmonic current, when the harmonic frequency of the harmonic current reaches the first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to the branch circuit matching the target cable to obtain the harmonic current shunting result; when the harmonic current shunting result indicates that the harmonic current has been shunted to the branch circuit, the target current is harmonically detected to obtain the harmonic detection result; if the harmonic detection result indicates that there is residual harmonic current in the target current, and the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold, current compensation is performed on the residual harmonic current to obtain the harmonic current compensation result of the residual harmonic current; each harmonic current shunting result and each harmonic current compensation result are used together as the harmonic processing result of the target parallel cable.

[0030] In an exemplary embodiment, Figure 2 As shown, a method for processing harmonics of parallel cables is provided, and the method is applied to Figure 1 The control center 104 in FIG. 1 is used as an example to illustrate the invention, including:

[0031] Step S202, in response to the harmonic processing instruction for the target parallel cables, obtaining the target current of each target cable in the target parallel cables; the target current includes the harmonic current.

[0032] Among them, the target parallel cable may refer to a parallel cable that needs to be processed for harmonic current, and a parallel cable refers to two or more cables used in parallel. The harmonic processing instruction refers to an instruction for performing harmonic processing on the target parallel cable, which can be understood as harmonic current monitoring on the target parallel cable. The harmonic processing instruction may be an instruction automatically generated when the target parallel cable starts to input current. It may also be an instruction generated by a control center. The target parallel cable includes at least two target cables, and the target cable is the individual cables that make up the target parallel cable. There will be a target current in each target cable, and the target current includes the main frequency current and harmonic current in the target cable. The main frequency current can be understood as the basic frequency current for the normal operation of the target cable. The harmonic current is a non-sinusoidal characteristic current, and the frequency of the harmonic current is an integer multiple of the fundamental sine wave frequency.

[0033] For example, the control center will monitor the target parallel cables in real time. When receiving the harmonic processing instruction for the target parallel cables, the control center can instruct the current sensor connected thereto to collect current. Of course, the current sensor can also collect current automatically. A current sensor can be configured at the entrance of each target cable to detect and collect the target current in each target cable in real time.

[0034] Step S204, for each harmonic current, when the harmonic frequency of the harmonic current reaches the first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to a branch circuit matching the target cable to obtain a harmonic current shunting result.

[0035] Among them, the harmonic frequency refers to the frequency of the harmonic current. The first harmonic frequency threshold is a threshold value set in advance for the harmonic frequency, which is used to determine whether the harmonic current needs to be shunted. If the harmonic frequency of the harmonic current reaches the threshold, the harmonic current needs to be shunted. Otherwise, the harmonic current does not need to be shunted. The current refers to the circuit where the harmonic current is located, or the circuit where the target cable corresponding to the harmonic cable is located, which can also be understood as the main circuit. The branch circuit is an external circuit, and each circuit where the target cable is located can correspond to a branch circuit for receiving the harmonic current that needs to be shunted. The harmonic current shunting result can be used to indicate whether the harmonic current has been successfully shunted to the branch circuit. Of course, in actual applications, the harmonic current shunting result may also include other content, such as relevant parameters of the branch circuit, and this embodiment does not limit this.

[0036] Exemplarily, the control center is connected to an LC filter, which is a passive filter designed using a combination of inductance (L) and capacitance (C), and is mainly used to filter out signals of a specific frequency. In this embodiment, multiple LC filters are configured in the target parallel cable, and each LC filter can be pre-tuned to a specified harmonic frequency, such as the 3rd, 5th, 7th, etc. These specified harmonic frequencies are also the first harmonic frequency thresholds. When the harmonic current passes through the LC filter, the LC filter will automatically absorb the harmonics that reach the first harmonic frequency threshold and guide them to the branch circuit for shunting. The filtered current can return to the circuit where the target cable is located. In this way, the branch circuit can shunt high-frequency harmonics from the main circuit, thereby effectively reducing the accumulation of harmonic currents in the parallel cable, thereby ensuring the safe and stable operation of the parallel cable.

[0037] In one example, the first harmonic frequency threshold needs to meet the following conditions:

[0038]

[0039] in, is the first harmonic frequency threshold, is the inductor, For capacitors, by designing appropriate parameters and , so that it can effectively filter out the 3rd, 5th, 7th and other specified harmonic frequencies, i.e., the first harmonic frequency threshold.

[0040] Step S206 , when the harmonic current shunting result indicates that the harmonic current has been shunted into the branch circuit, perform harmonic detection on the target current to obtain a harmonic detection result.

[0041] The harmonic detection is the operation of detecting the harmonic current frequency in the target current after the harmonic current is shunted. The harmonic detection result can be used to indicate whether there is residual harmonic current in the target current and whether the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold.

[0042] For example, after completing harmonic current filtering and shunting, in order to ensure the accuracy of harmonic processing, further detection can be performed, namely, detecting whether there is any residual harmonic current in the target current, and whether the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold.

[0043] Optionally, the controller is also connected to a harmonic detection unit, which can collect and analyze the current waveform of the target current in the target cable in real time, and use mathematical methods such as Fourier transform to parse out the harmonic components in the target current from the current waveform.

[0044] Step S208: If the harmonic detection result indicates that there is residual harmonic current in the target current and the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold, current compensation is performed on the residual harmonic current to obtain a harmonic current compensation result of the residual harmonic current.

[0045] Among them, the second harmonic frequency threshold is also a threshold value pre-set for the harmonic frequency, which is used to determine whether the harmonic current needs to be compensated. The harmonic current compensation result may include the compensation current of the remaining harmonic current. Of course, it can also include other contents, such as harmonic compensation methods, namely passive filter compensation, active filter compensation and hybrid filter compensation.

[0046] Exemplarily, if the harmonic detection result indicates that there is residual harmonic current in the target current, and the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold, it is necessary to perform current compensation on the residual harmonic current. Current compensation can be understood as the process of compensating the incomplete sinusoidal electrical signal of the harmonic current into a complete sinusoidal wave. The control center will calculate the compensation current of the residual harmonic current, and then perform current compensation on the residual harmonic current based on the compensation current. If the harmonic detection result indicates that there is no residual harmonic current in the target current, harmonic current compensation is not required. Or if there is residual harmonic current in the target current, harmonic current compensation is not required. Or if there is residual harmonic current in the target current, but its harmonic frequency does not exceed the second harmonic frequency threshold, harmonic current compensation may not be performed.

[0047] Step S210: taking the harmonic current shunting results and the harmonic current compensation results together as the harmonic processing results of the target parallel cable.

[0048] For example, the control center can use the harmonic current shunting results and the harmonic current compensation results as the harmonic processing results of the target parallel cable. These harmonic processing results can be used as data support for performance analysis or optimization of the target parallel cable or the electrical equipment corresponding to the target parallel cable.

[0049] In this embodiment, the control center responds to the harmonic processing instruction for the target parallel cable, and first obtains the harmonic current of each target cable in the target parallel cable. When the harmonic frequency of the harmonic current reaches the first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to the branch circuit that matches the target cable. This can reduce the accumulation and propagation of harmonics in the parallel cables. After the harmonic cable is shunted, if there is still residual harmonic current in the target cable, and the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold, further current compensation is performed on the residual harmonic current to suppress the harmonic current. In this way, this embodiment performs harmonic processing on the parallel cables from the two aspects of harmonic current shunting and harmonic current compensation to achieve the purpose of reducing or even suppressing harmonic currents, thereby ensuring the safe and stable operation of the parallel cables.

[0050] In an exemplary embodiment, Figure 3 As shown, current compensation is performed on the residual harmonic current to obtain the harmonic current compensation result of the residual harmonic current, including:

[0051] Step S302, obtaining harmonic amplitude and harmonic phase parameters of the residual harmonic current.

[0052] Step S304, determining a harmonic anti-phase parameter opposite to the harmonic phase parameter.

[0053] Among them, the harmonic amplitude refers to the amplitude of the residual harmonic current. The harmonic phase parameter refers to the phase of the residual harmonic current. The harmonic anti-phase parameter refers to the phase opposite to the phase of the residual harmonic current.

[0054] Exemplarily, when performing harmonic current compensation, the harmonic acquisition unit connected to the control center first obtains the amplitude and phase of the residual harmonic current in the target cable, and determines the phase opposite to the phase.

[0055] Step S306: Based on the harmonic anti-phase parameter and the harmonic amplitude, current compensation analysis is performed on the residual harmonic current to obtain a compensation current of the residual harmonic current.

[0056] Step S308: taking the compensation current as the harmonic current compensation result of the residual harmonic current.

[0057] Exemplarily, a compensation current for the residual harmonic current is then generated by an inverter connected to the control center based on the harmonic anti-phase parameter and the harmonic amplitude. The compensation current is opposite in phase to the residual harmonic current and has the same amplitude. The compensation current can be added to the target cable to eliminate the influence of the residual harmonic current.

[0058] Optionally, the inverter may also adjust the amplitude and phase of the compensation current according to the real-time operation status and load changes of the target cable to ensure that the compensation current always matches the harmonic current, thereby achieving effective suppression of the harmonic current.

[0059] Optionally, a specific area can be set in the target parallel cable, and harmonic current compensation can be performed in the specific area. In practical applications, the harmonic current shunting and harmonic current compensation can be set in a sequential order according to actual conditions, or can be performed simultaneously.

[0060] In this embodiment, the amplitude and phase of the harmonic current are collected by the harmonic collection unit, and a compensation current with the same amplitude and opposite phase as the harmonic current is generated by the inverter, thereby compensating for the harmonic current, reducing the impact of the harmonic current on the parallel cables, and ensuring the safe and stable operation of the parallel cables.

[0061] In an exemplary embodiment, the parallel cable harmonic processing method further includes: screening key cable nodes from candidate cable nodes of the target parallel cable.

[0062] Among them, the key cable nodes refer to the key nodes in the target parallel cable, and the specific positions and quantities of the key cable nodes can be determined according to the actual situation.

[0063] Exemplarily, there are multiple candidate cable nodes in the target parallel cable, and the control center can select key cable nodes from the multiple candidate cable nodes in advance according to actual needs as nodes for shunting harmonic currents.

[0064] In an exemplary embodiment, when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to a branch circuit that matches the target cable, including: at a critical cable node, when the harmonic frequency of the harmonic current exceeds the first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to a branch circuit that matches the target cable.

[0065] Exemplarily, when the target current of the target cable is transmitted to a pre-selected key cable node, the LC filter will filter the harmonic current in the target current and shunt it into the branch circuit.

[0066] In an exemplary embodiment, Figure 4 As shown, the parallel cable harmonic processing method also includes:

[0067] Step S402, respectively obtaining harmonic current parameter information of each harmonic current.

[0068] Step S404: based on the parameter information of each harmonic current, determine whether each harmonic current is distributed evenly.

[0069] The harmonic current parameter information may refer to parameters such as the magnitude and distribution of the harmonic current.

[0070] Exemplarily, a current sensor is installed at the entrance of each target cable. When each target cable inputs current, the current sensor monitors the magnitude and distribution of harmonic current in real time. The current sensor sends these harmonic current parameters to the automatic adjustment module, which can determine whether the harmonic current of each target cable is evenly distributed based on these harmonic current parameters.

[0071] Step S406: If the distribution of the harmonic currents is uneven, perform harmonic current distribution on the target parallel cables to obtain a harmonic current distribution result of the target parallel cables.

[0072] Exemplarily, if the automatic adjustment module determines that the harmonic current distribution of each target cable is unbalanced, for example, when the harmonic current of a certain target cable is relatively large, it can be considered that the harmonic current distribution of each target cable is unbalanced. At this time, the automatic adjustment module needs to adjust the harmonic current distribution between each target cable, which can be achieved by adjusting the resistor, induction coil or load to achieve the purpose of balancing the harmonic current between each target cable, reducing the heating and overload of individual cables due to carrying too much harmonic current, thereby ensuring the safe and stable operation of the parallel cables.

[0073] Optionally, in addition to balancing and distributing the harmonic current, the automatic adjustment module can also balance and distribute the main frequency current, so as to ensure that the main frequency current and the harmonic current can be evenly distributed in the parallel cables.

[0074] In this embodiment, the harmonic current distribution in each cable is monitored and adjusted in real time to achieve harmonic current load balancing in the parallel cables, thereby reducing cable overload and heating, and ensuring safe and stable operation of the parallel cables.

[0075] In an exemplary embodiment, Figure 5 As shown, the parallel cable harmonic processing method also includes:

[0076] Step S502, obtaining the harmonic processing requirement of the harmonic processing instruction.

[0077] Step S504: Based on the harmonic processing requirement, layout optimization and heat dissipation optimization are performed on the target parallel cables to obtain layout optimization results and heat dissipation optimization results of the target parallel cables.

[0078] The layout optimization result refers to the result obtained by optimizing the layout structure between target cables in the target parallel cable; the heat dissipation optimization result refers to the result obtained by optimizing the heat dissipation structure of target cables in the target parallel cable. The harmonic processing requirement may refer to the requirements related to harmonic monitoring and processing of parallel cables, such as safety, heat dissipation, etc.

[0079] Exemplarily, the control center extracts the harmonic processing requirements from the harmonic processing instructions, and then optimizes the layout of the target parallel cables based on the harmonic processing requirements. Specifically, it can be to adjust the laying distance and staggered layout between the target cables, so as to maintain sufficient space spacing, reduce the electromagnetic coupling effect between the cables, and prevent mutual interference of harmonic currents. The laying path should be shortened as much as possible to reduce the total cable impedance. Of course, in practical applications, a suitable layout optimization method can be set according to actual conditions. In addition, the control center can also optimize the heat dissipation of the target parallel cables based on the harmonic processing requirements. Specifically, the outer sheath of the cable adopts high thermal conductivity material to improve the heat dissipation performance of the cable and reduce local overheating caused by harmonic currents.

[0080] Optionally, a forced cooling system such as an air cooling device or a liquid cooling device can be configured outside the cable. When the cable temperature is too high or the load is too high, the control center can start the forced cooling system to accelerate the heat dissipation of the cable and ensure the safe and stable operation of the parallel cables.

[0081] In this embodiment, by optimizing the cable layout design and heat dissipation structure, the heating problem caused by electromagnetic interference and harmonic current between cables can be reduced, thereby ensuring the safe and stable operation of the parallel cables.

[0082] In an exemplary embodiment, Figure 6 As shown, the parallel cable harmonic processing method also includes:

[0083] Step S602, obtaining the operating data of the target parallel cable.

[0084] Step S604: Based on the operation data, the service life of the electrical equipment matching the target parallel cable is predicted to obtain the life prediction result of the electrical equipment.

[0085] The operation data may refer to the corresponding data generated by the target parallel cable during operation, such as current carrying capacity, harmonic current distribution, cable specifications, temperature, etc. The electrical equipment may refer to the electrical equipment corresponding to the target parallel cable, such as a motor. The life prediction result is used to characterize the remaining service life of the electrical equipment.

[0086] For example, the control center can also predict the service life of the electrical equipment that matches the target parallel cable based on the current carrying capacity, harmonic current distribution, cable specifications, temperature and other data of the target parallel cable during operation, that is, predict the remaining service life of the electrical equipment. Of course, a comprehensive analysis can also be conducted in combination with the working data of the electrical equipment itself, such as working status and performance. This makes it easier for maintenance personnel to inspect and replace electrical equipment before it actually fails, reducing the downtime of the cable system and ensuring the stable operation of the parallel cable.

[0087] In a specific embodiment, the parallel cable harmonic processing method is applicable to high voltage cable systems with a voltage level of 500KV (kilovolts) and above. Specifically, it includes: an intelligent control system, and a cable equivalent module, a harmonic shunt module and a harmonic compensation module controlled by the intelligent control system. The cable equivalent module includes a current sensor and an automatic adjustment module. The harmonic shunt module includes multiple LC filters. The harmonic compensation module includes a harmonic acquisition unit, an inverter and a control unit. Figure 7 The structure diagram of the parallel cable is shown, where R represents resistance, and the cable equivalent module 1 represents the parallel cable. The LC filter 2 represents the LC filter, and the harmonic shunt circuit 3 represents the branch circuit. The harmonic compensation module 5 can generate a compensation current and inject the compensation current into the parallel cable to suppress the harmonic current in the parallel cable.

[0088] Specifically, a current sensor is installed at the entrance of each parallel cable, and the current sensor measures the current passing through the cable, including the main frequency current and the harmonic current. The sensor transmits the collected current parameter information to the automatic adjustment module, and the automatic adjustment module adjusts the load distribution in time by analyzing the data. The specific adjustment is achieved by adjusting the resistor, induction coil or load control device to balance the harmonic currents between the parallel cables and reduce the thermal effect caused by the uneven distribution. When the current is transmitted to the key cable node of the parallel cable, the intelligent control system starts the harmonic shunt module. That is, the LC filter absorbs the filtering of the harmonic frequency reaching the first harmonic frequency threshold and guides it to the branch circuit for shunting. In this way, by shunting high-frequency harmonics from the cable, the accumulation of harmonic currents in the cable is effectively reduced, and the problem of cable overheating caused by high-order harmonics is avoided. After shunting, the intelligent control system will also start the harmonic compensation module according to the actual situation. That is, the harmonic acquisition unit will collect and analyze the current waveform in the cable in real time, and use mathematical methods such as Fourier transform to parse out the harmonic components in the current. When the harmonic current is detected in the cable and exceeds the second harmonic frequency threshold, that is, the harmonic current still exceeds the standard, the control unit calculates the required compensation current and generates a compensation current with the opposite phase and equal amplitude to the harmonic current through the inverter. The compensation current generated by the inverter is introduced into the parallel cable to effectively offset the influence of the harmonic current.

[0089] In addition, the intelligent control system can also optimize the layout and heat dissipation design of the parallel cables, minimize the electromagnetic coupling effect between the cables, and reduce the propagation of harmonic currents between the cables. The intelligent control system can also optimize the parameter configuration of each module based on the operating data of the parallel cables, and predict the service life of the electrical equipment corresponding to the parallel cables. For the current balancing module, a backup module can also be configured to ensure that when the current balancing module fails, the backup module can quickly take over to avoid further deterioration of the harmonic current imbalance. The intelligent control system can also be connected to a safety protection device to prevent accidents such as short circuits, overloads, and current leakage in the cable. To prevent damage caused by cable overload, overload protection devices such as automatic circuit breakers and fuses can also be added. When the load of a cable exceeds the safe range, the overload protector will automatically disconnect the circuit to protect the other parts of the cable from being affected. The short-circuit protection device can quickly cut off the power supply when a short circuit occurs inside the parallel cable to prevent the short-circuit current from damaging the cable. The intelligent control system can detect and record the location of the short-circuit event so that the problem can be quickly located and repaired. The intelligent control system can also add simulation and virtual debugging tools to establish an accurate simulation model based on the electrical parameters, load characteristics and harmonic components of the parallel cable. This can evaluate the performance of the parallel cable in advance to ensure the stability and efficiency of the parallel cable in actual applications, thereby reducing the uncertainty in actual deployment. The intelligent control system of the parallel cable can be widely used in various power grids and power transmission systems, especially in high-voltage and high-current transmission scenarios, such as wind power generation, solar power stations and power supply networks of large-scale data centers.

[0090] In this embodiment, the intelligent control system responds to the harmonic processing instruction for the target parallel cable, and first obtains the harmonic current of each target cable in the target parallel cable. When the harmonic frequency of the harmonic current reaches the first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to the branch circuit that matches the target cable. This can reduce the accumulation and propagation of harmonics in the parallel cables. After the harmonic cable is shunted, if there is still residual harmonic current in the target cable, and the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold, further current compensation is performed on the residual harmonic current to suppress the harmonic current. In this way, the present application performs harmonic processing on the parallel cables from two aspects of harmonic current shunting and harmonic current compensation, so as to achieve the purpose of reducing or even suppressing harmonic currents, thereby ensuring the safe and stable operation of the parallel cables.

[0091] 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.

[0092] Based on the same inventive concept, the embodiment of the present application also provides a parallel cable harmonic processing device for implementing the parallel cable harmonic processing method 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 one or more parallel cable harmonic processing device embodiments provided below can refer to the limitations of the parallel cable harmonic processing method above, and will not be repeated here.

[0093] In an exemplary embodiment, Figure 8 As shown, a parallel cable harmonic processing device is provided, comprising: a harmonic current acquisition module 802, for responding to a harmonic processing instruction for a target parallel cable, to acquire a target current of each target cable in the target parallel cable; the target current includes a harmonic current; a harmonic current shunting module 804, for, for each harmonic current, when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, shunting the harmonic current from the circuit where the target cable is located to a branch circuit matching the target cable, to obtain a harmonic current shunting result; a harmonic detection module 806, for When the current shunting result indicates that the harmonic current has been shunted into the branch circuit, harmonic detection is performed on the target current to obtain the harmonic detection result; the harmonic cable compensation module 808 is used to perform current compensation on the residual harmonic current if the harmonic detection result indicates that there is residual harmonic current in the target current and the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold to obtain the harmonic current compensation result of the residual harmonic current; the harmonic processing result generation module 810 is used to use each harmonic current shunting result and each harmonic current compensation result together as the harmonic processing result of the target parallel cable.

[0094] In one of the embodiments, the harmonic cable compensation module 808 is also used to: obtain the harmonic amplitude and harmonic phase parameters of the residual harmonic current; determine the harmonic anti-phase parameters that are opposite to the harmonic phase parameters; perform current compensation analysis on the residual harmonic current based on the harmonic anti-phase parameters and the harmonic amplitude to obtain the compensation current of the residual harmonic current; and use the compensation current as the harmonic current compensation result of the residual harmonic current.

[0095] In one of the embodiments, the device is also used to: screen key cable nodes from each candidate cable node of the target parallel cable; and when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, shunt the harmonic current from the circuit where the target cable is located to a branch circuit that matches the target cable, including: at the key cable node, when the harmonic frequency of the harmonic current exceeds the first harmonic frequency threshold, shunt the harmonic current from the circuit where the target cable is located to a branch circuit that matches the target cable.

[0096] In one of the embodiments, the device is also used to: obtain the harmonic current parameter information of each harmonic current respectively; based on the harmonic current parameter information, determine whether the harmonic currents are evenly distributed; if the harmonic currents are unevenly distributed, perform harmonic current distribution on the target parallel cable to obtain the harmonic current distribution result of the target parallel cable.

[0097] In one of the embodiments, the device is also used to: obtain the harmonic processing requirements of the harmonic processing instructions; based on the harmonic processing requirements, perform layout optimization and heat dissipation optimization on the target parallel cables to obtain layout optimization results and heat dissipation optimization results of the target parallel cables; the layout optimization result refers to the result obtained by optimizing the layout structure between each target cable in the target parallel cable; the heat dissipation optimization result refers to the result obtained by optimizing the heat dissipation structure of each target cable in the target parallel cable.

[0098] In one of the embodiments, the device is also used to: obtain operating data of the target parallel cable; based on the operating data, predict the service life of the electrical equipment matching the target parallel cable to obtain the life prediction result of the electrical equipment; the life prediction result is used to characterize the remaining service life of the electrical equipment.

[0099] Each module in the above-mentioned parallel cable harmonic processing device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules 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 the operations corresponding to each of the above modules.

[0100] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Fig. 9As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. 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, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store parallel cable harmonic processing data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a parallel cable harmonic processing method is implemented.

[0101] Those skilled in the art will understand that Fig. 9 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.

[0102] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the following steps when executing the computer program: in response to a harmonic processing instruction for a target parallel cable, a target current of each target cable in the target parallel cable is obtained; the target current includes a harmonic current; for each harmonic current, when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to a branch circuit matching the target cable to obtain a harmonic current shunting result; when the harmonic current shunting result indicates that the harmonic current has been shunted to the branch circuit, a harmonic detection is performed on the target current to obtain a harmonic detection result; if the harmonic detection result indicates that there is a residual harmonic current in the target current, and the harmonic frequency of the residual harmonic current exceeds a second harmonic frequency threshold, current compensation is performed on the residual harmonic current to obtain a harmonic current compensation result of the residual harmonic current; and each harmonic current shunting result and each harmonic current compensation result are used together as the harmonic processing result of the target parallel cable.

[0103] In one embodiment, when the processor executes the computer program, the following steps are also implemented: obtaining the harmonic amplitude and harmonic phase parameters of the residual harmonic current; determining the harmonic anti-phase parameters that are opposite to the harmonic phase parameters; performing current compensation analysis on the residual harmonic current based on the harmonic anti-phase parameters and the harmonic amplitude to obtain the compensation current of the residual harmonic current; and using the compensation current as the harmonic current compensation result of the residual harmonic current.

[0104] In one embodiment, when the processor executes the computer program, the following steps are also implemented: from each candidate cable node of the target parallel cable, a key cable node is screened; when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to a branch circuit that matches the target cable, including: at the key cable node, when the harmonic frequency of the harmonic current exceeds the first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to a branch circuit that matches the target cable.

[0105] In one embodiment, when the processor executes the computer program, the following steps are also implemented: respectively obtaining the harmonic current parameter information of each harmonic current; based on the harmonic current parameter information, determining whether the harmonic currents are evenly distributed; if the harmonic currents are unevenly distributed, performing harmonic current distribution on the target parallel cable to obtain the harmonic current distribution result of the target parallel cable.

[0106] In one embodiment, when the processor executes the computer program, the following steps are also implemented: obtaining the harmonic processing requirements of the harmonic processing instructions; based on the harmonic processing requirements, performing layout optimization and heat dissipation optimization on the target parallel cables to obtain layout optimization results and heat dissipation optimization results of the target parallel cables; the layout optimization result refers to the result obtained by optimizing the layout structure between each target cable in the target parallel cable; the heat dissipation optimization result refers to the result obtained by optimizing the heat dissipation structure of each target cable in the target parallel cable.

[0107] In one embodiment, when the processor executes the computer program, the following steps are also implemented: obtaining the operating data of the target parallel cable; based on the operating data, predicting the service life of the electrical equipment matching the target parallel cable to obtain the life prediction result of the electrical equipment; the life prediction result is used to characterize the remaining service life of the electrical equipment.

[0108] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented: in response to a harmonic processing instruction for a target parallel cable, a target current of each target cable in the target parallel cable is obtained; the target current includes a harmonic current; for each harmonic current, when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to a branch circuit matching the target cable to obtain a harmonic current shunting result; when the harmonic current shunting result indicates that the harmonic current has been shunted to the branch circuit, harmonic detection is performed on the target current to obtain a harmonic detection result; if the harmonic detection result indicates that there is residual harmonic current in the target current, and the harmonic frequency of the residual harmonic current exceeds a second harmonic frequency threshold, current compensation is performed on the residual harmonic current to obtain a harmonic current compensation result of the residual harmonic current; and each harmonic current shunting result and each harmonic current compensation result are used together as the harmonic processing result of the target parallel cable.

[0109] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining the harmonic amplitude and harmonic phase parameters of the residual harmonic current; determining the harmonic anti-phase parameters that are opposite to the harmonic phase parameters; performing current compensation analysis on the residual harmonic current based on the harmonic anti-phase parameters and the harmonic amplitude to obtain the compensation current of the residual harmonic current; and using the compensation current as the harmonic current compensation result of the residual harmonic current.

[0110] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: from each candidate cable node of the target parallel cable, a key cable node is screened; when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to a branch circuit that matches the target cable, including: at the key cable node, when the harmonic frequency of the harmonic current exceeds the first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to a branch circuit that matches the target cable.

[0111] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: respectively obtaining the harmonic current parameter information of each harmonic current; based on the harmonic current parameter information, determining whether the harmonic currents are evenly distributed; if the harmonic currents are unevenly distributed, performing harmonic current distribution on the target parallel cable to obtain the harmonic current distribution result of the target parallel cable.

[0112] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining the harmonic processing requirements of the harmonic processing instructions; based on the harmonic processing requirements, performing layout optimization and heat dissipation optimization on the target parallel cables to obtain layout optimization results and heat dissipation optimization results of the target parallel cables; the layout optimization result refers to the result obtained by optimizing the layout structure between each target cable in the target parallel cable; the heat dissipation optimization result refers to the result obtained by optimizing the heat dissipation structure of each target cable in the target parallel cable.

[0113] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining the operating data of the target parallel cable; based on the operating data, predicting the service life of the electrical equipment matching the target parallel cable to obtain the life prediction result of the electrical equipment; the life prediction result is used to characterize the remaining service life of the electrical equipment.

[0114] In one embodiment, a computer program product is provided, comprising a computer program, which implements the following steps when executed by a processor: in response to a harmonic processing instruction for a target parallel cable, obtaining a target current for each target cable in the target parallel cable; the target current includes a harmonic current; for each harmonic current, when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, shunting the harmonic current from the circuit where the target cable is located to a branch circuit matching the target cable to obtain a harmonic current shunting result; when the harmonic current shunting result indicates that the harmonic current has been shunted to the branch circuit, performing harmonic detection on the target current to obtain a harmonic detection result; if the harmonic detection result indicates that there is a residual harmonic current in the target current, and the harmonic frequency of the residual harmonic current exceeds a second harmonic frequency threshold, performing current compensation on the residual harmonic current to obtain a harmonic current compensation result of the residual harmonic current; and using each harmonic current shunting result and each harmonic current compensation result together as the harmonic processing result of the target parallel cable.

[0115] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining the harmonic amplitude and harmonic phase parameters of the residual harmonic current; determining the harmonic anti-phase parameters that are opposite to the harmonic phase parameters; performing current compensation analysis on the residual harmonic current based on the harmonic anti-phase parameters and the harmonic amplitude to obtain the compensation current of the residual harmonic current; and using the compensation current as the harmonic current compensation result of the residual harmonic current.

[0116] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: from each candidate cable node of the target parallel cable, a key cable node is screened; when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to a branch circuit that matches the target cable, including: at the key cable node, when the harmonic frequency of the harmonic current exceeds the first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to a branch circuit that matches the target cable.

[0117] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: respectively obtaining the harmonic current parameter information of each harmonic current; based on the harmonic current parameter information, determining whether the harmonic currents are evenly distributed; if the harmonic currents are unevenly distributed, performing harmonic current distribution on the target parallel cable to obtain the harmonic current distribution result of the target parallel cable.

[0118] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining the harmonic processing requirements of the harmonic processing instructions; based on the harmonic processing requirements, performing layout optimization and heat dissipation optimization on the target parallel cables to obtain layout optimization results and heat dissipation optimization results of the target parallel cables; the layout optimization result refers to the result obtained by optimizing the layout structure between each target cable in the target parallel cable; the heat dissipation optimization result refers to the result obtained by optimizing the heat dissipation structure of each target cable in the target parallel cable.

[0119] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining the operating data of the target parallel cable; based on the operating data, predicting the service life of the electrical equipment matching the target parallel cable to obtain the life prediction result of the electrical equipment; the life prediction result is used to characterize the remaining service life of the electrical equipment.

[0120] 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, and the collection, use and processing of relevant data must comply with relevant regulations.

[0121] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method 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 memory 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), magnetic 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, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0122] 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 application.

[0123] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations 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 method for processing harmonics of parallel cables, characterized in that: The method comprises: In response to a harmonic processing instruction for a target parallel cable, obtaining a target current of each target cable in the target parallel cable; the target current includes a harmonic current; For each of the harmonic currents, when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to a branch circuit that matches the target cable, to obtain a harmonic current shunting result; When the harmonic current shunting result indicates that the harmonic current has been shunted into the branch circuit, performing harmonic detection on the target current to obtain a harmonic detection result; If the harmonic detection result indicates that there is a residual harmonic current in the target current, and the harmonic frequency of the residual harmonic current exceeds the second harmonic frequency threshold, current compensation is performed on the residual harmonic current to obtain a harmonic current compensation result of the residual harmonic current; The harmonic current shunting results and the harmonic current compensation results are taken together as the harmonic processing result of the target parallel cable.

2. The method according to claim 1, characterized in that The performing current compensation on the residual harmonic current to obtain a harmonic current compensation result of the residual harmonic current includes: Obtaining harmonic amplitude and harmonic phase parameters of the residual harmonic current; determining a harmonic anti-phase parameter opposite to the harmonic phase parameter; Based on the harmonic inversion parameter and the harmonic amplitude, a current compensation analysis is performed on the residual harmonic current to obtain a compensation current of the residual harmonic current; The compensation current is used as a harmonic current compensation result of the residual harmonic current.

3. The method according to claim 1, characterized in that The method further comprises: Selecting key cable nodes from candidate cable nodes of the target parallel cable; When the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, shunting the harmonic current from the circuit where the target cable is located to a branch circuit matching the target cable comprises: At the key cable node, when the harmonic frequency of the harmonic current exceeds a first harmonic frequency threshold, the harmonic current is shunted from the circuit where the target cable is located to a branch circuit that matches the target cable.

4. The method according to claim 1, characterized in that: The method further comprises: Respectively obtaining harmonic current parameter information of each of the harmonic currents; Based on the harmonic current parameter information, determining whether the harmonic currents are evenly distributed; If the harmonic currents are unevenly distributed, harmonic current distribution is performed on the target parallel cables to obtain a harmonic current distribution result of the target parallel cables.

5. The method according to claim 1, characterized in that The method further comprises: Obtaining a harmonic processing requirement of the harmonic processing instruction; Based on the harmonic processing requirements, the target parallel cables are optimized for layout and heat dissipation, and layout optimization results and heat dissipation optimization results of the target parallel cables are obtained; The layout optimization result refers to the result obtained by optimizing the layout structure between each target cable in the target parallel cable; the heat dissipation optimization result refers to the result obtained by optimizing the heat dissipation structure of each target cable in the target parallel cable.

6. The method according to claim 1, characterized in that The method further comprises: Acquiring operation data of the target parallel cable; Based on the operation data, the service life of the electrical equipment matching the target parallel cable is predicted to obtain a life prediction result of the electrical equipment; the life prediction result is used to characterize the remaining service life of the electrical equipment.

7. A parallel cable harmonic processing device, characterized in that: The device comprises: A harmonic current acquisition module, configured to acquire a target current of each target cable in the target parallel cables in response to a harmonic processing instruction for the target parallel cables; the target current includes a harmonic current; A harmonic current shunting module, for each of the harmonic currents, when the harmonic frequency of the harmonic current reaches a first harmonic frequency threshold, shunting the harmonic current from the circuit where the target cable is located to a branch circuit matching the target cable, to obtain a harmonic current shunting result; A harmonic detection module, configured to perform harmonic detection on the target current to obtain a harmonic detection result when the harmonic current shunting result indicates that the harmonic current has been shunted into the branch circuit; A harmonic cable compensation module, used for performing current compensation on the residual harmonic current to obtain a harmonic current compensation result of the residual harmonic current if the harmonic detection result indicates that there is a residual harmonic current in the target current and the harmonic frequency of the residual harmonic current exceeds a second harmonic frequency threshold; The harmonic processing result generating module is used to use each of the harmonic current shunting results and each of the harmonic current compensation results as the harmonic processing result of the target parallel cable.

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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