CN117521308A - Modeling method, device, equipment and storage medium for laying cable buried pipe of transformer substation - Google Patents
Modeling method, device, equipment and storage medium for laying cable buried pipe of transformer substation Download PDFInfo
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Abstract
The invention relates to the technical field of power cables, in particular to a modeling method, a modeling device, modeling equipment and a storage medium for laying buried pipes of a transformer substation, which can acquire influence factors of laying buried pipes of the transformer substation; acquiring a buried pipe laying scene in a transformer substation, and analyzing the buried pipe laying scene to obtain a buried pipe laying mode corresponding to the buried pipe laying scene; acquiring an actual buried pipe laying scene and related data, and matching a buried pipe laying mode according to the actual buried pipe laying scene; calculating to obtain buried pipe quantity type data according to the related data of the actual buried pipe laying scene and the buried pipe laying influence factors of the transformer substation; and establishing a three-dimensional cable laying buried pipe model of an actual buried pipe laying scene according to the buried pipe quantity type data and the buried pipe laying mode. It can be understood that according to the technical scheme disclosed by the invention, the built three-dimensional cable laying buried pipe model can assist constructors in carrying out visual construction, so that the construction can be dependent, and the error rate in the construction is reduced.
Description
Technical Field
The invention relates to the technical field of power cables, in particular to a modeling method, a modeling device, modeling equipment and storage media for laying buried pipes of cables of a transformer substation.
Background
The cable laying is an important component in the electrical design, is the most complex and tedious link, and has great influence on subsequent construction and operation and maintenance.
The construction work of cable laying is loaded down with trivial details, the cable quantity is many, the engineering time is long, and former technology often relies on experienced constructor to plan, lay the cable according to the scene condition to reduce the crossing of cable in the passageway, nevertheless still has the degree of difficulty great, the circumstances of taking account of the unprecedented.
Meanwhile, the cable is easy to cross collision in the channel; the cable length depends on manpower, is difficult to count accurately, the design process is time-consuming and laborious, and the reserved margin is often too large, so that waste is caused; the construction unit is often laid according to a method convenient for construction, and the uppermost layer cables are orderly arranged and the lower layer cables are seriously collided.
Disclosure of Invention
In view of the above, the invention aims to provide a modeling method, a modeling device, modeling equipment and a storage medium for laying a cable buried pipe of a transformer substation, which are used for solving the problems that in the prior art, when the cable of the transformer substation is laid in a buried pipe, the difficulty of manual laying is high and the problem of incomplete construction is considered.
According to a first aspect of an embodiment of the present invention, there is provided a modeling method for laying a cable buried pipe in a transformer substation, including:
acquiring transformer station buried pipe laying influence factors;
acquiring a buried pipe laying scene in a transformer substation, and analyzing the buried pipe laying scene to obtain a buried pipe laying mode corresponding to the buried pipe laying scene;
acquiring an actual buried pipe laying scene and related data, and matching a buried pipe laying mode according to the actual buried pipe laying scene;
calculating to obtain buried pipe quantity type data according to the related data of the actual buried pipe laying scene and the buried pipe laying influence factors of the transformer substation;
and establishing a three-dimensional cable laying buried pipe model of an actual buried pipe laying scene according to the buried pipe quantity type data and the buried pipe laying mode.
Preferably, the obtaining the transformer substation buried pipe laying influencing factor includes:
and acquiring section parameters, types, attributes and laying intervals of different cables as transformer substation buried pipe laying influencing factors.
Preferably, the calculating, according to the related data of the actual pipe laying scene and the substation pipe laying influencing factors, the pipe laying quantity type data includes:
if the buried pipe laying scene is the cable buried pipe laying scene of the outlet of the storage battery chamber, acquiring the long-term allowable current-carrying capacity and the loop allowable voltage drop of the cable from the related data of the actual buried pipe laying scene;
obtaining cable section parameters according to the long-term allowable current-carrying capacity of the cable and the loop allowable voltage drop;
obtaining the diameter of the buried pipe according to the cable section parameters and the transformer substation buried pipe laying influencing factors;
obtaining distance data from the storage battery chamber to the secondary equipment chamber direct current cabinet from the related data of the actual buried pipe laying scene;
and obtaining the type data of the number of the buried pipes according to the diameter of the buried pipes and the distance data.
Preferably, the laying scene further comprises: the lightning arrester monitors a cable laying scene on line, a cable laying scene of equipment in a main transformer area of a transformer substation, or an AIS distribution device or a cable laying scene of equipment without a cable trench.
Preferably, after the three-dimensional cable laying buried pipe model of the actual buried pipe laying scene is established, the method further includes:
obtaining a cable pipe penetrating and burying standard operation program;
and analyzing the three-dimensional cable laying buried pipe model according to the cable penetrating pipe buried pipe standard operation program to obtain the construction steps.
Preferably, the method further comprises:
and acquiring a modification instruction, and modifying the three-dimensional cable laying buried pipe model according to the modification instruction.
Preferably, after the three-dimensional cable laying buried pipe model of the actual buried pipe laying scene is established, the method further includes:
integrating the three-dimensional cable laying buried pipe model with a transformer substation equipment management system, acquiring state information and performance information of equipment in the three-dimensional cable laying buried pipe model through the transformer substation equipment management system, and displaying the state information and the performance information in the three-dimensional cable laying buried pipe model.
According to a second aspect of an embodiment of the present invention, there is provided a substation cable laying calculation modeling apparatus, including:
the influence factor acquisition module is used for acquiring influence factors of laying buried pipes of the transformer substation;
the scene analysis module is used for acquiring a buried pipe laying scene in the transformer substation, analyzing the buried pipe laying scene and obtaining a buried pipe laying mode corresponding to the buried pipe laying scene;
the actual scene acquisition module is used for acquiring an actual buried pipe laying scene and related data, and matching a buried pipe laying mode according to the actual buried pipe laying scene;
the buried pipe data calculation module is used for calculating buried pipe quantity type data according to the related data of the actual buried pipe laying scene and the buried pipe laying influence factors of the transformer substation;
and the three-dimensional model building module is used for building a three-dimensional cable laying buried pipe model of an actual buried pipe laying scene according to the buried pipe quantity type data and the buried pipe laying mode.
According to a third aspect of embodiments of the present invention, there is provided a substation cable laying calculation modeling apparatus comprising:
a master controller and a memory connected with the master controller;
the memory, in which program instructions are stored;
the master is configured to execute program instructions stored in the memory and perform the method of any of the above.
According to a fourth aspect of embodiments of the present invention, there is provided a computer readable storage medium storing a computer program which, when executed by a processor, implements a method according to any one of the above.
The technical scheme provided by the embodiment of the invention can comprise the following beneficial effects:
it can be understood that the technical scheme provided by the invention can acquire the laying influence factors of the buried pipes of the transformer substation; acquiring a buried pipe laying scene in a transformer substation, and analyzing the buried pipe laying scene to obtain a buried pipe laying mode corresponding to the buried pipe laying scene; acquiring an actual buried pipe laying scene and related data, and matching a buried pipe laying mode according to the actual buried pipe laying scene; calculating to obtain buried pipe quantity type data according to the related data of the actual buried pipe laying scene and the buried pipe laying influence factors of the transformer substation; and establishing a three-dimensional cable laying buried pipe model of an actual buried pipe laying scene according to the buried pipe quantity type data and the buried pipe laying mode. It can be understood that according to the technical scheme disclosed by the invention, the built three-dimensional cable laying buried pipe model can assist constructors in carrying out visual construction, so that the construction can be dependent, and the error rate in the construction is reduced; meanwhile, the three-dimensional cable laying buried pipe model can greatly reduce the time and workload of manually drawing design drawings by a designer, and improves the design efficiency; the designer may more easily find potential design errors or conflicts to resolve the problem early. Finally, the problems that the manual laying difficulty is high and the problem of incomplete construction is solved when laying the buried pipes are effectively avoided.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
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.
FIG. 1 is a schematic step diagram illustrating a substation cable laying modeling method, according to an exemplary embodiment;
FIG. 2 is a three-dimensional schematic diagram of a battery compartment outlet cable laying scenario shown according to an exemplary embodiment;
fig. 3 is a three-dimensional schematic diagram showing an on-line monitoring cable laying scenario for a lightning arrester according to an example embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.
With the gradual maturity of three-dimensional digital technology and virtual simulation technology, three-dimensional cable laying and three-dimensional visualization technology can effectively solve the problems of cable cross collision, difficult accurate statistics of length, time and labor waste in construction of cable laying and the like, so that three-dimensional cable laying by applying the three-dimensional digital software has become trend, and each department of construction, supervision and operation and maintenance can be effectively assisted to improve the construction operation and maintenance management effect. However, the number of secondary circuits in a substation is more complex and complex than that of primary cables, and there are control cables, power cables, communication cables, direct current cables, alternating current cables, and the like, and the laying of these secondary optical cables is the most important part of the cabling of the substation.
The main cable laying modes are two modes, namely in soil and in air. The method is used for laying in soil, namely directly burying the trench, and is not used in a direct burying mode in a transformer substation in cities or suburbs. The laying in the air is divided into laying in cable structures (cable structures commonly used are cable tunnels, cable trenches, calandria, hangers, bridges and the like, and cable interlayers below main control and centralized control rooms, vertical shafts for vertically laying cables and the like) and laying on cable bridges (including ladder frames, trays and trough-type). Large-scale cables are generally laid on cable trays, small-scale power cables are laid on pallets, and control cables and communication cables are laid on trough-type trays.
The transformer substation cable is laid by adopting a cable pit, buried pipes and a vertical shaft, wherein a hot galvanizing angle steel bracket is arranged in the cable pit for laying cables, and a fireproof composite type groove box (the outer layer is a steel galvanized steel structure fireproof coating and the inner layer is a nonmetallic fireproof layer) is arranged at the bottommost layer of the cable pit for laying optical cables. And the short distance from the outdoor equipment mechanism body to the cable pit generally adopts a buried pipe laying mode. The invention mainly aims at the condition of laying pipes, and provides a cable laying pipe modeling method based on a transformer substation digital technology.
Example 1
Fig. 1 is a schematic step diagram of a substation cable laying modeling method according to an exemplary embodiment, referring to fig. 1, a substation cable laying modeling method is provided, including:
and S11, acquiring transformer substation buried pipe laying influence factors.
It should be noted that, obtain transformer substation buried pipe laying influence factor, include:
and acquiring section parameters, types, attributes and laying intervals of different cables as transformer substation buried pipe laying influencing factors.
Cable section: the choice of the cross-section of the cable in the substation determines the size and scale of the support and burial and shaft arrangements in the cabling, and the cross-section of the cable is affected by different factors. The cable section selection is mainly influenced by the continuous working current, the economic current density, the short circuit thermal stability, the voltage drop and other aspects of the loop, and is also influenced by the insulation level induced voltage and other aspects. The control cable sections commonly used in the transformer substation all have nominal sections and can be directly adopted in cable laying.
Cable type and fire protection related requirements: different cable types correspond to different fire protection requirements, which results in different measures to be taken for cabling. The specific measures need to be determined for different occasions, and the overall requirements are as follows: for loops in which serious accidents are caused by the possible spread of fire of cables and cable dense places which are easily affected by external influences and fire, proper fireproof separation is arranged, and according to factors such as engineering importance, fire probability, characteristics and economical rationality, and the like, the implementation of fireproof separation, the adoption of flame-retardant cables, the adoption of fireproof cables and the addition of automatic alarming and/or special fire-fighting devices are adopted.
Related requirements of cable laying spacing and laying allowance degree are as follows: cabling is also subject to related regulatory requirements such as maximum tube length of the tube, tube inner diameter requirement multiple, bend radius allowed and height allowed. The requirements of laying intervals and the like in reference specification are mainly needed, such as the requirements of proportion of the diameter of a penetrating pipe to the section of a cable, the requirements of laying a support layering laying when the permitted bending radius of the laying is 20 times of the outer diameter of the cable and the number of the cables in the same channel is large, and the like.
The accurate entry of the influencing factors related to the cable cross section, the cable type, the cable laying spacing and the laying allowance thereof is a key step for ensuring the design accuracy and the construction feasibility:
logging a cable section: parameter definition: first, the cross-sectional parameters of the cable are defined. Typically including an accurate measurement of the diameter of the cable or, in the case of irregularly shaped cross sections, its width and height. Three-dimensional representation of the cable: the use of modeling software to accurately represent cable sections in a three-dimensional model ensures that these data reflect the actual cable size and shape.
Logging of cable types: detailed classification: the cable types, including power cables, communication cables, etc., and their insulation types, conductor materials, etc., are classified in detail in the model. Attribute allocation: specific properties and characteristics, such as conductivity, temperature range, mechanical strength, etc., are assigned to each cable type.
Logging of cable laying intervals: pitch specification: the lay distance between the cables is determined based on the cable type and prescribed safety criteria. Representation in the model: ensuring that the distance between cables meets these specifications in a three-dimensional model, and making adjustments as necessary to accommodate space constraints or other design requirements.
Preferably, the data in the model can be periodically checked and updated to ensure that it reflects the latest design requirements and construction criteria. And adjusting the model according to actual construction conditions and test results so as to improve the accuracy and the practicability of the model.
Through professional three-dimensional modeling software and accurate data management, the precision of the cable laying buried pipe design and the effectiveness of construction can be ensured, so that errors and risks in the construction process are reduced.
And step S12, acquiring a buried pipe laying scene in the transformer substation, and analyzing the buried pipe laying scene to obtain a buried pipe laying mode corresponding to the buried pipe laying scene.
In practical application, the buried pipe laying scene in the transformer substation mainly comprises a storage battery chamber outlet cable buried pipe laying scene, an arrester on-line monitoring cable buried pipe laying scene, a transformer substation main transformer area equipment cable buried pipe laying scene and an AIS distribution device or a cable trench-free equipment cable buried pipe laying scene. And different scenes correspond to different laying modes.
And S13, acquiring an actual buried pipe laying scene and related data, and matching a buried pipe laying mode according to the actual buried pipe laying scene.
In practical application, when the practical buried pipe laying scene is obtained, the corresponding buried pipe laying mode can be obtained according to the matching of the buried pipe laying scene, and a foundation is provided for the subsequent die construction.
And step S14, calculating the buried pipe quantity type data according to the related data of the actual buried pipe laying scene and the buried pipe laying influence factors of the transformer substation.
The borehole number type data includes the type of borehole required for the cable borehole of the present scenario, as well as the number of each type of borehole.
And S15, establishing a three-dimensional cable laying buried pipe model of an actual buried pipe laying scene according to the buried pipe quantity type data and the buried pipe laying mode.
In the construction field, improper execution of cable threading and pipe laying operations can lead to a series of serious accidents and problems:
problems caused by improper cable threading:
mechanical damage: if the pipe penetrating operation is improper, the cable sheath may be damaged, and the insulation performance of the cable may be further affected. Such damage may manifest itself immediately during construction or gradually worsen over prolonged use.
Overload of the cable: improper tube penetration can lead to overcrowding between cables, increasing the risk of heat build-up, leading to overheating, overloading, and even shorting of the cables.
Bending and twisting: if the cable is twisted or excessively bent during the pipe penetrating process, the damage to the inner conductor may be caused, and the performance and service life of the cable are reduced.
Problems caused by incorrect pipe laying selection:
corrosion and wear: the selection of unsuitable tubing may lead to rapid corrosion and wear of buried pipelines. For example, the use of corrosive materials in chemically active soil will accelerate the damage to the pipe.
Unsuitable physical properties: the use of pipes with mismatched physical properties (e.g., pipes with insufficient strength and poor pressure resistance) may lead to cracking or deformation of the pipe under the action of soil subsidence or external pressure.
Moisture intrusion: improper tube selection may result in poor waterproof performance, moisture penetration into the tubing, affecting the performance and safety of the cable.
Comprehensive effects:
these problems may lead to interruption of power supply, interruption of data transmission or signal distortion, and in severe cases may lead to safety accidents such as fire, electric shock, etc. This not only increases maintenance and replacement costs, but can also pose a threat to the surrounding environment and personnel safety.
To avoid the above problems, the construction process should strictly follow the standard operation procedures of cable penetration and pipe burying, select proper materials, and perform proper construction supervision and quality inspection. Therefore, the technical means provided by the embodiment can construct a visualized three-dimensional cable laying buried pipe model, and the visualized three-dimensional cable laying buried pipe model with data attribute information can effectively avoid related problems.
The three-dimensional model can be used as a visual reference of a construction site, helps project construction units understand complex design details and construction requirements, particularly underground cable buried pipes, has high requirements on positions, paths, bending and cable penetration of the cable buried pipes, and can be used for collision detection, identification and solving of conflicts of underground foundations, such as the conditions of spatial overlapping of pipelines and structural elements and the like.
When the pipe laying scene is a battery chamber outlet cable pipe laying scene, see fig. 2:
it should be noted that the calculating, according to the related data of the actual pipe laying scene and the substation pipe laying influencing factors, the pipe laying number type data includes:
if the buried pipe laying scene is the cable buried pipe laying scene of the outlet of the storage battery chamber, acquiring the long-term allowable current-carrying capacity and the loop allowable voltage drop of the cable from the related data of the actual buried pipe laying scene;
obtaining cable section parameters according to the long-term allowable current-carrying capacity of the cable and the loop allowable voltage drop;
obtaining the diameter of the buried pipe according to the cable section parameters and the transformer substation buried pipe laying influencing factors;
obtaining distance data from the storage battery chamber to the secondary equipment chamber direct current cabinet from the related data of the actual buried pipe laying scene;
and obtaining the type data of the number of the buried pipes according to the diameter of the buried pipes and the distance data.
In specific practice, the laying scene of the cable burial pipe at the outlet of the storage battery chamber is that the cable from the storage battery to the secondary equipment chamber is a low-voltage power cable, the section of the cable can be selected firstly, and then the size of the burial pipe can be selected through the section of the cable.
When selecting the cable section, the selection is mainly based on two conditions of the long-term allowable current-carrying capacity of the cable and the allowable voltage drop of the loop. Battery circuit cable selection requirements are shown in table 1.
TABLE 1
Wherein I is ca1 A, a storage battery discharge rate current which is the accident power failure time; i ca2 The unit A is the impulse discharge current at the initial stage of an accident (1 min); i d.1h 1h of discharge current, unit A; i ch0 The unit A is the initial impact current of the accident;
the calculation can be carried out as follows:
I ca1 ＝I d.1h ＝K c ×C 10 ＝0.54×800＝432A
I ca2 ＝I ch0 ＝156.8A
if the distance from the storage battery chamber to the direct current cabinet of the secondary equipment chamber is controlled to be within 25 meters, the following calculation is performed:
wherein: s is S cac Calculating a section for the cable;for resistivity, copper conductor was 0.0184Ω·mm 2 M; l is the cable length; i ca Calculating a current for the allowed voltage drop; deltaU p Allowing a voltage drop for the loop.
According to the calculation result, an NH-YJV-1X 185 cable is selected, and the cable corresponds to a 1kV single-core fireproof crosslinked polyethylene insulation polyvinyl chloride sheath power cable, and the cable parameters are shown in Table 2:
TABLE 2
According to the requirements of 5.4.4 in the cable procedure DL/T50217-2018 electric power engineering Cable design Standard: "the inner diameter of the protective tube is not less than 1.5 times the outer diameter of the cable or the envelope of the multi-heeled cable", then there are:
S≥1.5×27.5＝41.25mm
therefore, the inner diameter of the protective tube should be larger than 41.25mm, and the galvanized steel tube with the inner diameter of 70mm should be selected to be embedded in consideration of the condition that the protective tube is selected to be galvanized steel tube with one bending.
Two total groups of storage battery packs, each group of storage battery packs needs 2 NH-YJV-1X 185 cables plus one communication cable, so each group of storage battery packs is laid with 2 galvanized steel pipes of 1X phi 70 and 1X phi 32.
Therefore, the data of the number type of the buried pipes can be obtained, and then the three-dimensional cable laying buried pipe model of the actual buried pipe laying scene is built through the buried pipe laying mode.
The laying scene of the buried cable of the outlet cable of the storage battery chamber can be aimed at the condition that all two groups of storage batteries with the capacity of 800Ah, and the secondary storage battery capacity of a 500 kilovolt transformer substation and the total storage battery capacity of a 220 kilovolt transformer substation are both 800Ah in the current national network general design, namely the buried cable from the storage battery chamber to the secondary equipment chamber can be applied to the 500 kilovolt transformer substation and the 220 kilovolt transformer substation.
When the scene is a lightning arrester on-line monitoring cable buried pipe laying scene, see fig. 3:
the high-voltage and medium-voltage levels and the main transformer high-voltage side line of the transformer substation are generally provided with an arrester on-line monitoring device, and the adopted arrester on-line monitoring system adopts a structure of 'sensor + state monitoring IED + intelligent background', so that 1 set of state monitoring IED is used, and the monitoring of the discharge times and leakage current of the arrester is realized by collecting relevant information of the arrester.
The on-line monitoring current acquisition units of the lightning arrester are respectively and independently configured in A, B, C three phases of the lightning arrester, and are connected with the primary equipment body through a tail screen cable BV-1X 50mm 2.
The lightning arrester on-line monitoring current acquisition units of each phase are connected through a connection mode of a handle, namely: the phase A, the phase B, the phase C and the next lightning arrester are monitored on line to acquire the phase A of the unit, and each connection adopts 2 KVP-2X 2.5 cables of a power supply main cable and 1 RVVP-2X 1.0 cable of a communication cable. In fig. 3, the lightning arrester monitors the position of the current collecting unit hanging in the middle of the lightning arrester on line.
The following shows a burial calculation case for on-line monitoring of a cable burial installation scene for a lightning arrester:
according to the requirements of the regulations of DL/T50217-2018 power engineering cable design standard, the pipe penetrating diameter is calculated by burial:
from the control cable parameter table, it can be derived:
the control cable parameters are shown in table 3:
TABLE 3 Table 3
It is known that the inner diameter of the protection tube should be larger than 19.33mm, and the galvanized steel tube with the inner diameter of 32mm should be selected to be embedded in consideration of the condition that the protection tube is selected to be bent. Therefore, the connection of each on-line monitoring acquisition unit and the other acquisition unit passes through a galvanized steel pipe with the diameter of 1 x phi 32. In addition, in the construction design of the transformer substation, the equipment in the present period can be far apart, can be connected with each other in a three-phase manner at a nearby interval, then buried into a cable trench, and then connected with other equipment in the present period through the cable trench.
When the scene is the cable buried pipe laying scene of the transformer station main transformer area equipment:
the main transformer equipment of the transformer substation is the most important equipment of the whole station, the control, fire control, oil chromatography detection, disconnecting link, iron core grounding current monitoring and the like of the main transformer are concentrated in a main transformer area, and the secondary circuits of the main transformer related monitoring, protection, control and the like are relatively more, and the laying of the cables is realized through buried pipes. The apparatus relating to pipe laying comprises: 220kV neutral point disconnecting link mechanism-110 kV neutral point disconnecting link mechanism-main transformer on-load voltage regulating mechanism box-main transformer sleeve CT-iron core grounding on-line monitoring-main transformer body terminal box.
When the scene is an AIS distribution device or a cable laying scene of a cable-less trench device, the method comprises the following steps:
when an outdoor AIS (Air Insulated Switchgear air-insulated power distribution device) transformer substation type is adopted, cables from an AIS equipment mechanism body to an intelligent control cabinet are required to be laid by burying pipes; when an outdoor HGIS (Hybrid Gas Insulated Switchgear semi-gas insulated switchgear) or GIS (Gas Insulated Switchgear gas insulated switchgear) transformer substation type is adopted, the body mechanism is directly and physically connected with the intelligent control cabinet, and only the part of the intelligent control cabinet which is not close to the cable pit is considered to be required to be buried in the nearby cable pit when the cable is laid.
For the condition of burying pipes of AIS equipment and burying pipes of equipment not close to a cable pit, the requirement of '5.4.4-1' is required according to the DL/T50217-2018 rule: each pipe is preferably only penetrated by 1 cable; 5.4.5: the number of elbows of each cable protection pipe is not more than 3, the number of right-angle bends is not more than 2, the depth of an underground buried pipe from the ground is not less than 0.5m, the depth of the underground buried pipe from the bottom of a drain ditch is not less than 0.3m, and gaps of not less than 20mm are reserved between parallel pipes. "
Table 4 will count the cable burial requirements of substation AIS equipment.
Table 4 table AIS equipment cable burial list for transformer station
For the type of the HGIS or GIS transformer substation, when the intelligent control cabinet not close to the cable trench is used for laying cables, the buried pipe is required to be laid in the nearby cable trench, and holes are required to be reserved at the corresponding positions of the cable trench.
The technical scheme of the embodiment applies a three-dimensional fine design means, optimizes the related calculation of the condition of laying buried pipes of the transformer substation cable, is an innovative transformation of the process, control and management of laying construction, and provides a certain calculation application technical reference for three-dimensional laying application. The management requirements of the later operation and maintenance on the cables are gradually increased, and the cable laying becomes an indispensable component and key technology in the digital three-dimensional design.
The method also comprises the following steps:
and acquiring a modification instruction, and modifying the three-dimensional cable laying buried pipe model according to the modification instruction.
It can be understood that the technical scheme provided by the embodiment can improve the design efficiency, uses the digital technology (namely the three-dimensional digital modeling technology) to carry out secondary cable buried pipe laying design, and can quickly create, modify and optimize the design scheme through Computer Aided Design (CAD) software or modeling tools. The method can greatly reduce the time and workload of manually drawing the design drawing by a designer and improve the design efficiency. The method can reduce the design error rate, and the digital modeling method can provide an accurate three-dimensional design model, so that a designer is helped to better understand and visualize the design scheme. In this way, a designer may more easily discover potential design errors or conflicts, thereby resolving the problem early and reducing design changes and error rates in construction. The collaborative efficiency can be improved, and the digital modeling method enables the members of the design team to work cooperatively in a shared design environment. Designers, engineers, and constructors can communicate and negotiate design details in real-time by looking at and modifying the same digitized model. The cooperation mode can improve communication efficiency and reduce misunderstanding and information transmission errors.
It should be noted that after the three-dimensional cable laying buried pipe model of the actual buried pipe laying scene is established, the method further includes:
obtaining a cable pipe penetrating and burying standard operation program;
and analyzing the three-dimensional cable laying buried pipe model according to the cable penetrating pipe buried pipe standard operation program to obtain the construction steps.
It can be appreciated that the technical scheme shown in the embodiment can optimize the construction process, and the secondary cable laying meter method based on digital modeling can help to optimize the construction process. The designer can better plan construction activities, materials and equipment requirements, reduce construction time and cost, and improve construction quality by considering construction sequences and methods at the design stage. After the three-dimensional cable laying buried pipe model is obtained, the construction steps can be automatically guided out, and construction operation is convenient for constructors.
It should be noted that after the three-dimensional cable laying buried pipe model of the actual buried pipe laying scene is established, the method further includes:
integrating the three-dimensional cable laying buried pipe model with a transformer substation equipment management system, acquiring state information and performance information of equipment in the three-dimensional cable laying buried pipe model through the transformer substation equipment management system, and displaying the state information and the performance information in the three-dimensional cable laying buried pipe model.
It can be understood that the technical solution shown in this embodiment can enhance equipment maintenance and management: the digital modeling method can integrate the secondary cable buried pipe design with a substation equipment management system, and monitor and manage the equipment state and performance. By acquiring and analyzing the data in real time, the equipment faults can be found out in time, the maintenance requirements can be predicted, the planned maintenance can be performed, and the reliability and the usability of the equipment are improved.
Example two
Provided is a transformer substation cable laying calculation modeling device, comprising:
the influence factor acquisition module is used for acquiring influence factors of laying buried pipes of the transformer substation;
the scene analysis module is used for acquiring a buried pipe laying scene in the transformer substation, analyzing the buried pipe laying scene and obtaining a buried pipe laying mode corresponding to the buried pipe laying scene;
the actual scene acquisition module is used for acquiring an actual buried pipe laying scene and related data, and matching a buried pipe laying mode according to the actual buried pipe laying scene;
the buried pipe data calculation module is used for calculating buried pipe quantity type data according to the related data of the actual buried pipe laying scene and the buried pipe laying influence factors of the transformer substation;
and the three-dimensional model building module is used for building a three-dimensional cable laying buried pipe model of an actual buried pipe laying scene according to the buried pipe quantity type data and the buried pipe laying mode.
It can be understood that according to the technical scheme shown in the embodiment, the built three-dimensional cable laying buried pipe model can assist constructors in visual construction, so that the construction can be dependent, and the error rate in the construction is reduced; meanwhile, the three-dimensional cable laying buried pipe model can greatly reduce the time and workload of manually drawing design drawings by a designer, and improves the design efficiency; the designer may more easily find potential design errors or conflicts to resolve the problem early. Finally, the problems that the manual laying difficulty is high and the problem of incomplete construction is solved when laying the buried pipes are effectively avoided.
Example III
There is provided a substation cable laying calculation modeling apparatus comprising:
a master controller and a memory connected with the master controller;
the memory, in which program instructions are stored;
the master is configured to execute program instructions stored in the memory and perform the method of any of the above.
Example IV
According to a fourth aspect of embodiments of the present invention, there is provided a computer readable storage medium storing a computer program which, when executed by a processor, implements a method according to any one of the above.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "plurality" means at least two.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. The modeling method for laying the cable buried pipe of the transformer substation is characterized by comprising the following steps of:
acquiring transformer station buried pipe laying influence factors;
acquiring a buried pipe laying scene in a transformer substation, and analyzing the buried pipe laying scene to obtain a buried pipe laying mode corresponding to the buried pipe laying scene;
acquiring an actual buried pipe laying scene and related data, and matching a buried pipe laying mode according to the actual buried pipe laying scene;
calculating to obtain buried pipe quantity type data according to the related data of the actual buried pipe laying scene and the buried pipe laying influence factors of the transformer substation;
and establishing a three-dimensional cable laying buried pipe model of an actual buried pipe laying scene according to the buried pipe quantity type data and the buried pipe laying mode.
2. The method of claim 1, wherein the obtaining substation pipelaying influencing factors comprises:
and acquiring section parameters, types, attributes and laying intervals of different cables as transformer substation buried pipe laying influencing factors.
3. A method according to claim 2, wherein said calculating buried pipe number type data from said actual buried pipe laying scenario related data and said substation buried pipe laying influencing factors comprises:
if the buried pipe laying scene is the cable buried pipe laying scene of the outlet of the storage battery chamber, acquiring the long-term allowable current-carrying capacity and the loop allowable voltage drop of the cable from the related data of the actual buried pipe laying scene;
obtaining cable section parameters according to the long-term allowable current-carrying capacity of the cable and the loop allowable voltage drop;
obtaining the diameter of the buried pipe according to the cable section parameters and the transformer substation buried pipe laying influencing factors;
obtaining distance data from the storage battery chamber to the secondary equipment chamber direct current cabinet from the related data of the actual buried pipe laying scene;
and obtaining the type data of the number of the buried pipes according to the diameter of the buried pipes and the distance data.
4. The method of claim 3, wherein the step of,
the buried pipe laying scene further comprises: the lightning arrester monitors a cable laying scene on line, a cable laying scene of equipment in a main transformer area of a transformer substation, or an AIS distribution device or a cable laying scene of equipment without a cable trench.
5. A method according to claim 4, wherein after establishing the three-dimensional cabling borehole model of the actual borehole installation scenario, further comprises:
obtaining a cable pipe penetrating and burying standard operation program;
and analyzing the three-dimensional cable laying buried pipe model according to the cable penetrating pipe buried pipe standard operation program to obtain the construction steps.
6. The method as recited in claim 5, further comprising:
and acquiring a modification instruction, and modifying the three-dimensional cable laying buried pipe model according to the modification instruction.
7. A method according to claim 1, wherein after establishing the three-dimensional cabling borehole model of the actual borehole installation scenario, further comprises:
integrating the three-dimensional cable laying buried pipe model with a transformer substation equipment management system, acquiring state information and performance information of equipment in the three-dimensional cable laying buried pipe model through the transformer substation equipment management system, and displaying the state information and the performance information in the three-dimensional cable laying buried pipe model.
8. A substation cable laying computation modeling device, comprising:
the influence factor acquisition module is used for acquiring influence factors of laying buried pipes of the transformer substation;
the scene analysis module is used for acquiring a buried pipe laying scene in the transformer substation, analyzing the buried pipe laying scene and obtaining a buried pipe laying mode corresponding to the buried pipe laying scene;
the actual scene acquisition module is used for acquiring an actual buried pipe laying scene and related data, and matching a buried pipe laying mode according to the actual buried pipe laying scene;
the buried pipe data calculation module is used for calculating buried pipe quantity type data according to the related data of the actual buried pipe laying scene and the buried pipe laying influence factors of the transformer substation;
and the three-dimensional model building module is used for building a three-dimensional cable laying buried pipe model of an actual buried pipe laying scene according to the buried pipe quantity type data and the buried pipe laying mode.
9. A substation cable laying computation modeling apparatus, comprising:
a master controller and a memory connected with the master controller;
the memory, in which program instructions are stored;
the master is configured to execute program instructions stored in a memory and to perform the method of any one of claims 1 to 7.
10. A computer readable storage medium storing a computer program, which when executed by a processor, implements the method according to any one of claims 1-7.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118365219A (en) * | 2024-06-18 | 2024-07-19 | 陕西汤姆森电力科技有限公司 | Cable laying construction monitoring method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118365219A (en) * | 2024-06-18 | 2024-07-19 | 陕西汤姆森电力科技有限公司 | Cable laying construction monitoring method and system |
| CN118365219B (en) * | 2024-06-18 | 2024-09-17 | 陕西汤姆森电力科技有限公司 | Cable laying construction monitoring method and system |
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