CN112926167A - Power supply cable type selection method and device, electronic equipment and storage medium - Google Patents
Power supply cable type selection method and device, electronic equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the invention provides a power supply cable type selection method, a power supply cable type selection device, electronic equipment and a storage medium, wherein the method comprises the following steps: acquiring a base station connection topological graph, wherein the length and current-carrying capacity of a power supply cable to be selected between each power supply node at the far end and the last power supply node are marked in the base station connection topological graph; aiming at a power supply cable to be selected between each power supply node at a far end and the last power supply node, determining a performance element corresponding to the power supply cable to be selected; screening a target power supply cable from the candidate power supply cables based on the current-carrying capacity of the power supply cable to be selected, and determining a cable element corresponding to the target power supply cable; predicting a voltage loss generated by the target power supply cable based on the performance factor, the cable factor and the length of the candidate power supply cable; and under the condition that the voltage loss meets a voltage loss constraint condition, determining the power supply cable to be selected as a target power supply cable.
Description
Technical Field
The embodiment of the invention relates to the field of high-voltage direct-current power supply, in particular to a power supply cable type selection method and device, electronic equipment and a storage medium.
Background
With the continuous development of the telecommunication field, the direct current remote supply (i.e. supplying direct current to the remote equipment) is gradually popularized. When the direct current remote supply is used for main power supply, the electric energy loss of the power supply cable is generally required to be controlled within 10%, and when the direct current remote supply is used for standby power supply, the construction cost can be reduced by reducing the wire diameter of the power supply cable (the electric energy loss of the power supply cable is allowed to be controlled within 30% -40%) due to short actual working time.
In the related art, the voltage drop parameter of each kilometer of the power supply cable is usually queried to determine the corresponding power supply cable model. Because the direct-current remote supply has more electric energy conversion times and large electric energy loss of the power supply cable, the type of the corresponding power supply cable is determined by inquiring the voltage drop parameter of the power supply cable per kilometer, the unreasonable type selection of the power supply cable often occurs, and the electric energy loss amount exceeds the predicted electric energy loss amount or the remote equipment cannot work normally.
Disclosure of Invention
In order to solve the technical problems that due to the fact that the number of times of electric energy conversion in direct-current remote supply is large, the electric energy loss of a power supply cable is large, the type of the corresponding power supply cable is determined by inquiring voltage drop parameters of the power supply cable per kilometer, the type selection of the power supply cable is often unreasonable, and the electric energy loss amount exceeds the expected electric energy loss amount or a remote device cannot work normally, the embodiment of the invention provides a power supply cable type selection method, a device, an electronic device and a storage medium.
In a first aspect of the embodiments of the present invention, there is provided a power supply cable type selection method, including:
acquiring a base station connection topological graph, wherein the length and current-carrying capacity of a power supply cable to be selected between each power supply node at the far end and the last power supply node are marked in the base station connection topological graph;
aiming at a power supply cable to be selected between each power supply node at a far end and the last power supply node, determining a performance element corresponding to the power supply cable to be selected;
screening a target power supply cable from the candidate power supply cables based on the current-carrying capacity of the power supply cable to be selected, and determining a cable element corresponding to the target power supply cable;
predicting a voltage loss generated by the target power supply cable based on the performance factor, the cable factor and the length of the candidate power supply cable;
and under the condition that the voltage loss meets a voltage loss constraint condition, determining the power supply cable to be selected as a target power supply cable.
In an optional embodiment, the screening, based on the current-carrying capacity of the candidate power supply cable, a target power supply cable from among the candidate power supply cables includes:
determining a cable section constraint condition corresponding to the current-carrying capacity of the power supply cable to be selected according to a mapping relation between a preset current-carrying capacity and a cable section constraint condition;
and screening a target power supply cable from the candidate power supply cables, wherein the cross-sectional area of the target power supply cable meets the cable cross-sectional constraint condition.
In an alternative embodiment, the performance element comprises a load bearing voltage and/or load power and the cable element comprises a cross-sectional area and/or resistivity.
In an optional embodiment, the determining a cable element corresponding to the target power supply cable includes:
determining the corresponding section area of the target power supply cable, and determining the ambient temperature;
and determining the corresponding resistance coefficient of the target power supply cable at the ambient temperature.
In an optional embodiment, the determining the performance element corresponding to the power supply cable to be selected includes:
determining that the output voltage of the last power supply node is the bearing voltage corresponding to the power supply cable to be selected;
and determining the sum of the device powers of the subordinate power supply nodes of the previous power supply node as the load power corresponding to the power supply cable to be selected.
In an alternative embodiment, the predicting the voltage loss generated by the target power supply cable based on the performance element, the cable element and the length of the power supply cable to be selected includes:
inputting the bearing voltage, the load power, the section area, the resistance coefficient and the length of the power supply cable to be selected into a cable voltage drop loss prediction model;
and obtaining the voltage loss generated by the target power supply cable output by the cable voltage drop loss prediction model.
In an alternative embodiment, the cable drop loss prediction model includes:
wherein the Δ U comprises the voltage loss, the ρ comprises the resistivity, the U comprises the carrier voltage, the P comprises the load power, the L comprises the length of the power cable to be selected, and the S comprises the cross-sectional area.
In an optional embodiment, the determining that the candidate power supply cable is the target power supply cable in the case that the voltage loss satisfies the voltage loss constraint condition includes:
sorting the target power supply cables based on the cross-sectional area if the voltage loss satisfies a voltage loss constraint condition;
and determining the target power supply cable with the smallest cross-sectional area based on the sequencing result, and determining the power supply cable to be selected as the target power supply cable with the smallest cross-sectional area.
In an optional embodiment, the determining that the candidate power supply cable is the target power supply cable in the case that the voltage loss satisfies the voltage loss constraint condition includes:
determining a voltage loss threshold corresponding to the power supply cable to be selected, and judging whether the voltage loss is smaller than or equal to the voltage loss threshold;
and determining the power supply cable to be selected as a target power supply cable when the voltage loss is less than or equal to the voltage loss threshold value.
In a second aspect of embodiments of the present invention, there is provided a power supply cable type selection apparatus, including:
the base station connection topological graph comprises a topological graph acquisition module, a topological graph acquisition module and a topological graph analysis module, wherein the topological graph acquisition module is used for acquiring a base station connection topological graph, and the base station connection topological graph marks the length and the current-carrying capacity of a power supply cable to be selected between each power supply node at the far end and the last power supply node;
the element determining module is used for determining performance elements corresponding to the power supply cables to be selected aiming at the power supply cables to be selected between each power supply node at the far end and the last power supply node;
the cable screening module is used for screening a target power supply cable from the candidate power supply cables based on the current-carrying capacity of the power supply cable to be selected and determining a cable element corresponding to the target power supply cable;
a loss determination module for predicting a voltage loss generated by the target power supply cable based on the performance factor, the cable factor and the length of the power supply cable to be selected;
and the cable determining module is used for determining the power supply cable to be selected as a target power supply cable under the condition that the voltage loss meets a voltage loss constraint condition.
In a third aspect of the embodiments of the present invention, there is further provided an electronic device, including a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete communication with each other through the communication bus;
a memory for storing a computer program;
and a processor, configured to implement the power cable model selection method according to the first aspect when executing the program stored in the memory.
In a fourth aspect of the embodiments of the present invention, there is also provided a storage medium having stored therein instructions that, when executed on a computer, cause the computer to execute the power supply cable type selection method described in the first aspect above.
In a fifth aspect of embodiments of the present invention, there is also provided a computer program product containing instructions which, when run on a computer, cause the computer to perform the supply cable sizing method described in the above first aspect.
According to the technical scheme provided by the embodiment of the invention, a base station connection topological graph is obtained, the length and the current-carrying capacity of the power supply cable to be selected between each power supply node at the far end and the last power supply node are marked in the base station connection topological graph, the performance element corresponding to the power supply cable to be selected is determined aiming at the power supply cable to be selected between each power supply node at the far end and the last power supply node, the target power supply cable is screened from each candidate power supply cable based on the current-carrying capacity of the power supply cable to be selected, the cable element corresponding to the target power supply cable is determined, the voltage loss generated by the target power supply cable is predicted based on the performance element, the cable element and the length of the power supply cable to be selected, and the power supply cable to be selected is determined to be the target power supply cable under the condition that the. The length, the current-carrying capacity and the performance factor of the power supply cable to be selected are measured, and the power supply cable selection is carried out on the cable factor corresponding to the target power supply cable, so that the power supply cable selection is reasonable, and the situation that the electric energy loss exceeds the predicted electric energy loss or the far-end equipment cannot work normally is avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic flow chart illustrating an implementation of a power cable type selection method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a star networking effect according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a chain type networking effect according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a tree-type networking effect according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating an effect of a base station connection topology diagram according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a power cable model selection device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an electronic device shown in the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, an implementation flow diagram of a power supply cable type selection method provided in an embodiment of the present invention is shown, where the method specifically includes the following steps:
s101, a base station connection topological graph is obtained, wherein the length and the current-carrying capacity of a power supply cable to be selected between each power supply node at the far end and the last power supply node are marked in the base station connection topological graph.
At present, common networking modes for a base station group generally include star networking, chain networking and tree networking. All the substations in the star networking are directly connected with the master station, and are used for the situation that the master station is close to the substations, as shown in fig. 2; the chain type networking middle-substation is connected to the parent station in a series connection mode and is used for building strip-shaped base stations along roads, rivers and the like, as shown in fig. 3; the tree networking is a combination of star networking and chain networking, and is used in a scene with a large number of base stations and a complex field situation, as shown in fig. 4.
According to the principle of the least using amount of the power supply cables, selecting a networking mode suitable for the base station group, determining the networking mode, and then drawing a corresponding base station connection topological graph, wherein the length and the current-carrying capacity of the power supply cable to be selected between each power supply node at the far end and the previous power supply node need to be marked in the base station connection topological graph. Here, the local side power supply node (e.g. power supply node 0) in the base station connection topology may be the above-mentioned parent station, and each remote side power supply node (e.g. power supply node 1) may be the above-mentioned child station, and the current-carrying capacity of the power supply cable to be selected may be the current carried by the power supply cable to be selected, as shown in fig. 5.
It should be noted that, for the office side power supply node, a direct current remote supply office side device is usually adopted, the power supply voltage of the direct current remote supply office side device is high voltage direct current of 240-380V, and the direct current remote supply office side device is a national standard device, so that the universality is strong and the price is low; and when part of the distance is longer and the investment on the power supply cable is higher, non-national standard 600V direct current remote supply central office equipment can be adopted, which is not limited by the embodiment of the invention.
It should be noted that the current-carrying capacity of the candidate power supply cable may be the current carried by the candidate power supply cable. As shown in fig. 5, the current-carrying capacity of the cable to be selected between power supply node 0 and power supply node 1 may be 40A, the current-carrying capacity of the cable to be selected between power supply node 1 and power supply node 2 may be 10A, the current-carrying capacity of the cable to be selected between power supply node 2 and power supply node 3 may be 10A, and the current-carrying capacity of the cable to be selected between power supply node 1 and power supply node 4 may be 10A.
It should be noted that the voltage loss of the power supply cable can be estimated according to actual requirements, and the voltage loss of the power supply cable can be set within 10% under the condition that the direct current is remotely supplied for the main power supply. As shown in fig. 5, the power cable voltage loss between power supply node 0 and power supply node 1 is set to be within 10%, the power cable voltage loss between power supply node 1 and power supply node 2 is set to be within 10%, and so on.
Under the condition that direct current remote supply is used for standby power supply, the actual working time is short, the voltage loss threshold can be widened, the voltage loss of a power supply cable can be set to be about 30%, and the voltage loss can be set to be 40% under special conditions. As shown in fig. 5, the supply cable voltage loss between supply node 0 and supply node 1 is set at 30%, for supply cable voltage loss between supply node 1 and supply node 2 at 30%, and so on.
S102, aiming at the power supply cable to be selected between each power supply node at the far end and the last power supply node, determining the performance element corresponding to the power supply cable to be selected.
S103, screening a target power supply cable from the candidate power supply cables based on the current-carrying capacity of the power supply cable to be selected, and determining a cable element corresponding to the target power supply cable.
And S104, predicting the voltage loss generated by the target power supply cable based on the performance element, the cable element and the length of the power supply cable to be selected.
And S105, determining the power supply cable to be selected as a target power supply cable under the condition that the voltage loss meets a voltage loss constraint condition.
For the power supply cable to be selected between each remote power supply node and the previous power supply node, the requirements of the current-carrying capacity of the power supply cable and the voltage drop loss of the power supply cable need to be met, so that for the power supply cable to be selected between each remote power supply node and the previous power supply node, on one hand, the performance elements corresponding to the power supply cable to be selected are determined, wherein the performance elements comprise bearing voltage and/or load power.
On the other hand, based on the current-carrying capacity of the candidate power supply cable, the target power supply cable is screened from the candidate power supply cables, which means that the candidate power supply cable has a corresponding target power supply cable (which may be a plurality of target power supply cables), and then a cable element corresponding to the target power supply cable is determined, wherein the cable element includes a cross-sectional area and/or a resistivity.
And predicting the voltage loss generated by the target power supply cable based on the performance element corresponding to the power supply cable to be selected, the cable element corresponding to the target power supply cable and the length of the power supply cable to be selected, and determining the power supply cable to be selected as the target power supply cable under the condition that the voltage loss meets the voltage loss constraint condition.
For example, as shown in fig. 5, in the process of selecting the type of the power supply cable to be selected (i.e. 1 segment) between the power supply node 1 and the previous power supply node (i.e. power supply node 0), on one hand, the carrying voltage and the load power corresponding to the power supply cable to be selected (i.e. 1 segment) are determined, where the carrying voltage is the output voltage of the power supply node 0, and the load power is the power of the electric device that can be carried by the power supply cable to be selected (i.e. 1 segment).
On the other hand, based on the current-carrying capacity (40A) of the candidate feeder cable (i.e., 1 segment), a target feeder cable (e.g., 2 × 35 mm) is selected from the candidate feeder cables2Aluminum-core steel-clad outer sheath cable) means that the candidate power supply cable (i.e. 1 section) has a corresponding target power supply cable (e.g. 2 x 35 mm)2The aluminum core steel armor outer sheath cable), and further determining the cable elements corresponding to the target power supply cable.
And then based on the corresponding bearing voltage and load power of the power supply cable (namely 1 section) to be selected and a target power supply cable (for example, 2 multiplied by 35 mm)2Aluminum core steel armor outer sheath cable) and the length of the power supply cable to be selected (namely 1 section), and predicting the voltage loss generated by the target power supply cable (the aluminum core steel armor outer sheath cable with the length of 2 multiplied by 35mm 2).
For a predicted target supply cable (e.g. 2 x 35 mm)2Aluminum-core steel-clad outer sheath cable), and determining the power supply cable to be selected (i.e. 1 section) as a target power supply cable (2 x 35 mm) under the condition that the voltage loss meets the voltage loss constraint condition, namely under the condition that the voltage loss is less than a certain voltage loss threshold (e.g. 10%)2Aluminum core steel armor outer sheath cable), namely 2 x 35mm is configured between the power supply node 1 and the last power supply node (namely the power supply node 0)2The aluminum core steel armor outer sheath cable.
Subsequently, the process of type selection is performed on the to-be-selected power supply cable (i.e. 2 sections) between the power supply node 2 and the previous power supply node (i.e. power supply node 1), the process of type selection is performed on the to-be-selected power supply cable (i.e. 3 sections) between the power supply node 3 and the previous power supply node (i.e. power supply node 2), and the process of type selection is performed on the to-be-selected power supply cable (i.e. 4 sections) between the power supply node 4 and the previous power supply node (i.e. power supply node 1), which is similar to the process of type selection on the to-be-selected power supply cable (i.e. 1 section) between the power supply node 1 and the previous power supply node (i.e. power supply node 0), and the.
In the embodiment of the present invention, the carrying voltage and the liability power are specifically determined by the following method: and determining that the output voltage of the last power supply node is the bearing voltage corresponding to the power supply cable to be selected, and determining that the sum of the device power of the lower-level power supply node of the last power supply node is the load power corresponding to the power supply cable to be selected.
For example, as shown in fig. 5, in the process of selecting the type of the power supply cable to be selected (i.e., 1 segment) between the power supply node 1 and the previous power supply node (i.e., power supply node 0), it is determined that the output voltage 380V of the power supply node 0 is the carrying voltage corresponding to the power supply cable to be selected (i.e., 1 segment), and the sum of the power consumption device powers of the power supply nodes (power supply node 1, power supply node 2, power supply node 3, and power supply node 4) in the lower stages of the power supply node 0 is the load power corresponding to the power supply cable to be selected (i.e., 1 segment).
In the process of selecting the type of the power supply cable to be selected (i.e., 2 sections) between the power supply node 2 and the previous power supply node (i.e., the power supply node 1), determining that the output voltage 350V of the power supply node 1 (i.e., the output voltage 380V of the power supply node 0 actually reaches the power supply node 1 after passing through the above 1 section, and the voltage loss of the 1 section is 30V) is the corresponding bearing voltage of the power supply cable to be selected (i.e., 2 sections), determining that the sum of the power consumption device powers of the power supply nodes (the power supply node 2, the power supply node 3, and the power supply node 4) at the lower stage of the power supply node 1 is the corresponding load power of the power supply cable to be selected (i.e., 1 section), and so on.
In the embodiment of the present invention, the target power supply cable is specifically screened in the following manner: according to the mapping relation between the preset current-carrying capacity and the cable section constraint condition, determining the cable section constraint condition corresponding to the current-carrying capacity of the power supply cable to be selected, and screening a target power supply cable from all candidate power supply cables, wherein the section area of the target power supply cable meets the cable section constraint condition.
For example, as shown in fig. 5, in the process of selecting the type of the power supply cable to be selected (i.e., 1 section) between the power supply node 1 and the previous power supply node (i.e., power supply node 0), according to the mapping relationship between the preset current-carrying capacity and the cable section constraint condition, the cable section constraint condition corresponding to the current-carrying capacity (40A) of the power supply cable to be selected (i.e., 1 section) is determined, that is, the cable section area is greater than or equal to a certain threshold value, and a target power supply cable (2 × 35 mm) is screened from each candidate power supply cable (shown in table 1 below)2Aluminum core steel armor outer sheath cable) means that the power supply cable to be selected (i.e. 1 section) has a corresponding target power supply cable (2 x 35 mm)2The aluminum-core steel-armor outer jacket cable), and the cross-sectional area of the target power supply cable is greater than or equal to a certain threshold.
TABLE 1
In the embodiment of the present invention, the cross-sectional area and the resistivity may be specifically determined by: determining the corresponding section area of the target power supply cable, and determining the ambient temperature; and determining the corresponding resistance coefficient of the target power supply cable at the ambient temperature.
For example, as shown in fig. 5, in the process of selecting the candidate feeder cable (i.e. 1 segment) between the feeder node 1 and the previous feeder node (i.e. feeder node 0), the target feeder cable (2 × 35 mm) can be determined2Aluminum core steel armor outer jacket cable).
Here, the resistivity differs depending on the ambient temperature, and the target power supply cable (2X 35 mm) needs to be determined2Aluminum core steel armor outer sheath cable) to determine the target power supply cable (2 x 35 mm) at that temperature2Aluminum core steel armor outer jacket cable).
For example, the copper conductor ρ (resistivity) is 0.01724 Ω · mm at 20 ℃2M, aluminum conductor ρ 0.02826 Ω · mm2And/m. The temperature coefficient of resistance of the cable conductor at 20 ℃ (1/° C), the copper core is 0.00393, and the aluminum core is 0.00403. The copper cable has a resistivity at 40 ℃ of ρ 40 ═ ρ 20 ═ 1+ (40-20) × 0.0393 ═ 0.01724 ═ 1+ (40-20) × 0.0393 ═ 0.018595(Ω · mm)2/m)。
In the embodiment of the present invention, the voltage loss generated for the target power supply cable can be predicted specifically by the following manner: inputting the bearing voltage, the load power, the section area, the resistance coefficient and the length of the power supply cable to be selected into a cable voltage drop loss prediction model; and obtaining the voltage loss generated by the target power supply cable output by the cable voltage drop loss prediction model.
For example, as shown in fig. 5, in the process of selecting the type of the power supply cable to be selected (i.e., 1 segment) between the power supply node 1 and the previous power supply node (i.e., power supply node 0), the load voltage, the load power, the length corresponding to the power supply cable to be selected (i.e., 1 segment), the interface area and the resistance coefficient corresponding to the target power supply cable are input to the cable voltage drop loss prediction model, and the voltage loss generated by the target power supply cable output by the cable voltage drop loss prediction model is obtained, as shown in table 2 below.
TABLE 2
For the cable voltage drop loss prediction model, the following can be specifically mentioned:
wherein the Δ U comprises the voltage loss, the ρ comprises the resistivity, the U comprises the carrier voltage, the P comprises the load power, the L comprises the length of the power cable to be selected, and the S comprises the cross-sectional area.
In addition, the embodiment of the present invention may specifically determine the target power supply cable corresponding to the power supply cable to be selected by the following method: determining a voltage loss threshold corresponding to the power supply cable to be selected, and judging whether the voltage loss is smaller than or equal to the voltage loss threshold; sorting the target supply cables based on the cross-sectional area if the voltage loss is less than or equal to the voltage loss threshold; and determining the target power supply cable with the smallest cross-sectional area based on the sequencing result, and determining the power supply cable to be selected as the target power supply cable with the smallest cross-sectional area.
For example, as shown in fig. 5, in the process of selecting the type of the power supply cable to be selected (i.e. 1 segment) between the power supply node 1 and the last power supply node (i.e. the power supply node 0), determines the voltage loss threshold corresponding to the power cable (i.e. 1 segment) to be selected (wherein, the voltage loss threshold corresponding to each of the power cable segments (1 segment, 2 segment, 3 segment, 4 segment) shown in fig. 5 is shown in table 3 below), and determines whether the voltage loss is less than or equal to the voltage loss threshold, in case the voltage loss is less than or equal to the voltage loss threshold, a plurality of target supply cables is available, the voltage losses of the target power supply cables all meet a voltage loss constraint condition, the target power supply cables can be sorted based on the cross-sectional areas of the target power supply cables, and the target power supply cable with the smallest cross-sectional area is determined based on the sorting result: 2 x 35mm2The aluminum core steel armor outer sheath cable is determined, the power supply cable to be selected is the target power supply cable with the smallest cross-sectional area, namely, 2 multiplied by 35mm is configured between the power supply node 1 and the last power supply node (namely, the power supply node 0)2The aluminum core steel armor outer sheath cable.
| Power supply cable section | |
| 1 paragraph | 10％ |
| 2 section | 10％ |
| 3 paragraph | 10％ |
| 4 stages | 10％ |
TABLE 3
Through the above description of the technical scheme provided by the embodiment of the present invention, a base station connection topological graph is obtained, the base station connection topological graph marks the length and the current-carrying capacity of the power supply cable to be selected between each power supply node at the far end and the last power supply node, for the power supply cable to be selected between each power supply node at the far end and the last power supply node, a performance element corresponding to the power supply cable to be selected is determined, based on the current-carrying capacity of the power supply cable to be selected, a target power supply cable is selected from each candidate power supply cable, a cable element corresponding to the target power supply cable is determined, based on the performance element, the cable element and the length of the power supply cable to be selected, the voltage loss generated by the target power supply cable is predicted, and under the condition that the voltage loss meets the voltage loss constraint condition, the power supply cable to be selected is.
The length, the current-carrying capacity and the performance factor of the power supply cable to be selected are measured, and the power supply cable selection is carried out on the cable factor corresponding to the target power supply cable, so that the power supply cable selection is reasonable, and the situation that the electric energy loss exceeds the predicted electric energy loss or the far-end equipment cannot work normally is avoided.
Corresponding to the above method embodiment, an embodiment of the present invention further provides a power supply cable type selection apparatus, as shown in fig. 6, the apparatus may include: a topological graph acquisition module 610, an element determination module 620, a cable screening module 630, a loss determination module 640, and a cable determination module 650.
A topological diagram obtaining module 610, configured to obtain a base station connection topological diagram, where the base station connection topological diagram is marked with lengths and current capacities of power supply cables to be selected between each remote power supply node and a previous power supply node;
an element determining module 620, configured to determine, for a to-be-selected power supply cable between each remote power supply node and a previous power supply node, a performance element corresponding to the to-be-selected power supply cable;
a cable screening module 630, configured to screen a target power supply cable from the candidate power supply cables based on the current-carrying capacity of the power supply cable to be selected, and determine a cable element corresponding to the target power supply cable;
a loss determination module 640, configured to predict a voltage loss generated by the target power supply cable based on the performance factor, the cable factor, and the length of the power supply cable to be selected;
a cable determining module 650, configured to determine that the candidate power cable is a target power cable when the voltage loss satisfies a voltage loss constraint condition.
The embodiment of the present invention further provides an electronic device, as shown in fig. 7, which includes a processor 71, a communication interface 72, a memory 73 and a communication bus 74, where the processor 71, the communication interface 72, and the memory 73 complete mutual communication through the communication bus 74,
a memory 73 for storing a computer program;
the processor 71, when executing the program stored in the memory 73, implements the following steps:
acquiring a base station connection topological graph, wherein the length and current-carrying capacity of a power supply cable to be selected between each power supply node at the far end and the last power supply node are marked in the base station connection topological graph; aiming at a power supply cable to be selected between each power supply node at a far end and the last power supply node, determining a performance element corresponding to the power supply cable to be selected; screening a target power supply cable from the candidate power supply cables based on the current-carrying capacity of the power supply cable to be selected, and determining a cable element corresponding to the target power supply cable; predicting a voltage loss generated by the target power supply cable based on the performance factor, the cable factor and the length of the candidate power supply cable; and under the condition that the voltage loss meets a voltage loss constraint condition, determining the power supply cable to be selected as a target power supply cable.
The communication bus mentioned in the electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The communication interface is used for communication between the electronic equipment and other equipment.
The Memory may include a Random Access Memory (RAM) or a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the Integrated Circuit may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component.
In yet another embodiment of the present invention, a storage medium is further provided, which stores instructions that, when executed on a computer, cause the computer to perform the power supply cable type selection method described in any one of the above embodiments.
In yet another embodiment, a computer program product containing instructions is also provided, which when run on a computer causes the computer to perform the power cable sizing method as described in any of the above embodiments.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a storage medium or transmitted from one storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more available media integrated servers, data centers, and the like. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (12)
1. A method for power cable profiling, the method comprising:
acquiring a base station connection topological graph, wherein the length and current-carrying capacity of a power supply cable to be selected between each power supply node at the far end and the last power supply node are marked in the base station connection topological graph;
aiming at a power supply cable to be selected between each power supply node at a far end and the last power supply node, determining a performance element corresponding to the power supply cable to be selected;
screening a target power supply cable from the candidate power supply cables based on the current-carrying capacity of the power supply cable to be selected, and determining a cable element corresponding to the target power supply cable;
predicting a voltage loss generated by the target power supply cable based on the performance factor, the cable factor and the length of the candidate power supply cable;
and under the condition that the voltage loss meets a voltage loss constraint condition, determining the power supply cable to be selected as a target power supply cable.
2. The method according to claim 1, wherein said screening a target power supply cable from among candidate power supply cables based on the ampacity of the power supply cable to be selected comprises:
determining a cable section constraint condition corresponding to the current-carrying capacity of the power supply cable to be selected according to a mapping relation between a preset current-carrying capacity and a cable section constraint condition;
and screening a target power supply cable from the candidate power supply cables, wherein the cross-sectional area of the target power supply cable meets the cable cross-sectional constraint condition.
3. The method of claim 1, wherein the performance element comprises a load bearing voltage and/or load power and the cable element comprises a cross-sectional area and/or resistivity.
4. The method of claim 3, wherein the determining the cable element corresponding to the target power supply cable comprises:
determining the corresponding section area of the target power supply cable, and determining the ambient temperature;
and determining the corresponding resistance coefficient of the target power supply cable at the ambient temperature.
5. The method according to claim 3, wherein the determining the performance element corresponding to the candidate power supply cable comprises:
determining that the output voltage of the last power supply node is the bearing voltage corresponding to the power supply cable to be selected;
and determining the sum of the device powers of the subordinate power supply nodes of the previous power supply node as the load power corresponding to the power supply cable to be selected.
6. The method of claim 3, wherein predicting the voltage loss produced by the target power supply cable based on the performance factor, the cable factor, and the length of the candidate power supply cable comprises:
inputting the bearing voltage, the load power, the section area, the resistance coefficient and the length of the power supply cable to be selected into a cable voltage drop loss prediction model;
and obtaining the voltage loss generated by the target power supply cable output by the cable voltage drop loss prediction model.
7. The method of claim 6, wherein the cable drop loss prediction model comprises:
wherein the Δ U comprises the voltage loss, the ρ comprises the resistivity, the U comprises the carrier voltage, the P comprises the load power, the L comprises the length of the power cable to be selected, and the S comprises the cross-sectional area.
8. The method according to claim 3, wherein said determining that the candidate power supply cable is a target power supply cable if the voltage loss satisfies a voltage loss constraint condition comprises:
sorting the target power supply cables based on the cross-sectional area if the voltage loss satisfies a voltage loss constraint condition;
and determining the target power supply cable with the smallest cross-sectional area based on the sequencing result, and determining the power supply cable to be selected as the target power supply cable with the smallest cross-sectional area.
9. The method according to claim 1, wherein said determining that the candidate power supply cable is a target power supply cable if the voltage loss satisfies a voltage loss constraint condition comprises:
determining a voltage loss threshold corresponding to the power supply cable to be selected, and judging whether the voltage loss is smaller than or equal to the voltage loss threshold;
and determining the power supply cable to be selected as a target power supply cable when the voltage loss is less than or equal to the voltage loss threshold value.
10. A service cable selection apparatus, the apparatus comprising:
the base station connection topological graph comprises a topological graph acquisition module, a topological graph acquisition module and a topological graph analysis module, wherein the topological graph acquisition module is used for acquiring a base station connection topological graph, and the base station connection topological graph marks the length and the current-carrying capacity of a power supply cable to be selected between each power supply node at the far end and the last power supply node;
the element determining module is used for determining performance elements corresponding to the power supply cables to be selected aiming at the power supply cables to be selected between each power supply node at the far end and the last power supply node;
the cable screening module is used for screening a target power supply cable from the candidate power supply cables based on the current-carrying capacity of the power supply cable to be selected and determining a cable element corresponding to the target power supply cable;
a loss determination module for predicting a voltage loss generated by the target power supply cable based on the performance factor, the cable factor and the length of the power supply cable to be selected;
and the cable determining module is used for determining the power supply cable to be selected as a target power supply cable under the condition that the voltage loss meets a voltage loss constraint condition.
11. An electronic device is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor and the communication interface are used for realizing mutual communication by the memory through the communication bus;
a memory for storing a computer program;
a processor for implementing the method steps of any one of claims 1 to 9 when executing a program stored on a memory.
12. A storage medium on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 1 to 9.
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