CN104992033A - Simulation calculation method for thermal stability of ship cable - Google Patents
Simulation calculation method for thermal stability of ship cable Download PDFInfo
- Publication number
- CN104992033A CN104992033A CN201510442303.3A CN201510442303A CN104992033A CN 104992033 A CN104992033 A CN 104992033A CN 201510442303 A CN201510442303 A CN 201510442303A CN 104992033 A CN104992033 A CN 104992033A
- Authority
- CN
- China
- Prior art keywords
- cable
- thermal stability
- arrangement
- model
- node
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The present invention relates to a simulation calculation method for thermal stability of a ship cable. The method comprises the following steps of: performing statistical analysis and classification on current laying forms of a main cable on a conventional submarine, and determining 4 typical arrangement modes; determining a main parameter that influences thermal stability calculation of the cable; separately modeling the 4 typical arrangement modes; establishing a cable cross section model by using ansys software, applying a ring-shaped layer, and setting a layer position in the cable as a node, applying a radiant heat load to the node, and loading the main parameter of the cable on the node; and according to the established model, by pre-processing for the thermal stability calculation during long-time operation of the cable and post-processing for the thermal stability calculation during short-circuit current impact, calculating the thermal stability of the ship cable. The method provided by the present invention solves the problems that manual calculation is error-prone, a large amount of labor and time need to be consumed, and real-time property and accuracy are difficult to meet; and the method provides technical guidance for the construction and design of the main cable laying of the conventional submarine.
Description
Technical field
The present invention relates to submarine system emulation technology, particularly relate to a kind of shipboard cable thermal stability emulated computation method.
Background technology
In the job design of conventional submarine electric system, for ensureing reliability, the security of electric system, guarantee the full ship stabilization of power grids, it is necessary for carrying out cable thermal stability computation and analysis.The selection that analysis shipboard cable thermal stability in working order can be conventional submarine cable provides according to or verifies.Thermal stability analysis calculates significant to conventional submarine security.
The method that Present Domestic many employings hand computation and estimation combine estimates cable thermal stability, and along with going deep into of design effort, hand computation can not meet the requirement of real-time and accuracy, and the difficulty run in calculating is mainly:
The thermal stability of multi-cable is an interactive complex relationship.Can only pass through hand computation unit cable thermal stability at present, and carry out simple superposition to estimate the thermal stability of multi-cable, accuracy cannot ensure.
The parameter of cable thermal stability is many and the current parameters of different model different, and the method workload of hand computation is large.
To sum up, hand computation not only workload is large, and its accuracy also can not be guaranteed.For these problems, complete the evaluation work of thermal stability with software for calculation necessary and urgent.
Summary of the invention
The technical problem to be solved in the present invention is for defect of the prior art, provides a kind of shipboard cable thermal stability emulated computation method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of shipboard cable thermal stability emulated computation method, comprises the following steps:
1) carry out statistics and analysis classification to the form of laying of main cable on current conventional submarine, determine 4 kinds of typical arrangement modes, all the other forms of laying are 4 kinds of typical arrangement modes one or a combination set of; Described 4 kinds of typical arrangement modes are positive and negative cross arrangement, the arrangement of positive and negative cross stratification, positive and negative bidirectional crossed horizontal slice arrangement, positive and negative bidirectional crossed vertical demixing arrangement;
2) determining to affect the major parameter that cable thermal stability calculates is: the cross section of cable, conductor diameter, calculating external diameter, current-carrying capacity, resistance coefficient, density, specific heat capacity and coefficient of heat conductivity.
3) respectively model is built to 4 kinds of typical arrangement modes; Model adopts ansys software to set up cable transverse section model, the layering of application ring-type, and to set layering place in cable be node, applies radiation heat load, and be carried on node by the major parameter of above-mentioned cable at node;
4) according to the model built up, when adopting pre-service long as cable, the thermal stability of work calculates, and thermal stability when aftertreatment is short-circuit current rush calculates, and calculates the thermal stability of shipboard cable.
By such scheme, step 4) in calculating specific as follows:
4.1) according to main cable setting thermal stability hierarchical model;
4.2) design conditions and operating mode is confirmed;
4.3) main cable arrangement mode is determined;
4.4) maximum duty confirms;
4.5) set up realistic model and complete calculating.
The beneficial effect that the present invention produces is: the present invention is by the influence factor of statistics, contrast, theoretical analysis, research conventional submarine thermal stability, described by realistic model, obtain the computing method of thermal stability, solve hand computation easily to make mistakes, a large amount of manpowers and time need be spent to be difficult to meet the problem such as real-time and accuracy.For the design of conventional submarine main cable cable laying operation provides technological guidance.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
The schematic diagram of Fig. 1 to be main cable arrangement mode be positive and negative cross arrangement;
The schematic diagram of Fig. 2 to be main cable arrangement mode be positive and negative cross arrangement;
The schematic diagram of Fig. 3 to be main cable arrangement mode be positive and negative cross arrangement;
The schematic diagram of Fig. 4 to be main cable arrangement mode be positive and negative cross arrangement;
Fig. 5 is the legend that single main cable model thermal stability calculates;
Fig. 6 is the thermal stability after Fig. 1 arrangement mode simulation calculation;
Fig. 7 is the thermal stability after Fig. 2 arrangement mode simulation calculation;
Fig. 8 is the thermal stability after Fig. 3 arrangement mode simulation calculation;
Fig. 9 is the thermal stability after Fig. 4 arrangement mode simulation calculation.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Below for China one type single-core crosslinked polyethylene insulation cross-linked polyolefin sheath low-smoke non-halogen flame-retardant warship power cable, the simulation calculation of maximum duty thermal stability is described.
1) parameter is determined:
The parameter of this cable is as shown in table 1, table 2.
Table 1 single core JYJPJR/SC-1 type cable
Table 2 JYJPJR/SC-1 type cable conductor and insulation course parameter
2 specifically calculate.
1) according to main cable setting thermal stability hierarchical model;
The construction of cable is divided into multilayer, and determines can to divide in thermal stability model two-layer by analysis;
2) design conditions and operating mode confirm;
Relative main cable laid length, cable size is very little, and therefore current model can be got simplified cross sectional is that two dimensional model carries out calculating research.
3) main cable arrangement mode is determined;
Be mainly four kinds, as Fig. 1 ~ Fig. 4.4 kinds of typical arrangement modes are positive and negative cross arrangement, the arrangement of positive and negative cross stratification, positive and negative bidirectional crossed horizontal slice arrangement, positive and negative bidirectional crossed vertical demixing arrangement.
4) maximum duty confirms;
The cable that the output cable of 3 units and battery switch plate export merges together (as Fig. 4 arrangement), each unit is in normal work, after cable reaches nominal load, when output terminal short circuit or No. 1 fuse panel short circuit, cable work under extreme conditions.Therefore Temperature Distribution when short-circuit current is maximum after design condition seven (snorkel operating mode one-level charging latter stage) No. 1 unit output terminal short circuit respectively, the short circuit of No. 2 unit output terminals, the short circuit of No. 3 unit output terminals and operating mode eight (snorkel operating mode one-level charging latter stage) No. 1 fuse panel short circuit.
During as Fig. 4 arrangement mode, 1,2,6,7,11, No. 12 cables are No. 1 unit cable, 3,4,8,9,13, No. 14 cables are No. 2 unit cables, and 5,10,15,20,25, No. 30 cables are No. 3 unit cables, and all the other cables are battery switch plate output cable.Operating mode seven (snorkel operating mode one-level charging latter stage) when 1,2, No. 3 unit wherein arbitrary group of unit output terminal short circuit time its unit cable be 28932A by short-circuit current, another two groups of unit unit cables are 5626A by short-circuit current simultaneously, and battery switch plate output cable is 4356A by short-circuit current.Operating mode eight is when (snorkel operating mode one-level charging latter stage), the cable of battery switch plate was 13561A by short-circuit current when No. 1 fuse panel short circuit, and 1,2, No. 3 unit cable is 5969A by short-circuit current.
5) set up realistic model and complete calculating;
Establish realistic model according to above result, result of calculation is as table 3 ~ table 6:
Table 3 limiting condition thermal stability result of calculation table (No. 1 unit)
Table 4 limiting condition thermal stability result of calculation table (No. 2 units)
Table 5 limiting condition thermal stability result of calculation table (No. 3 units)
Table 6 limiting condition thermal stability result of calculation table (No. 1 plate)
From result, through calculating cable thermal stability under maximum duty, the spot temperature that cable is the warmmest is about 77.533 DEG C, is no more than the maximum temperature that cable itself allows, and this cable this kind of environmental baseline and can lay long-term stable operation under form and maximum conditions under bearing maximum duty.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (2)
1. a shipboard cable thermal stability emulated computation method, is characterized in that, comprises the following steps:
1) carry out statistics and analysis classification to the form of laying of main cable on current conventional submarine, determine 4 kinds of typical arrangement modes, all the other forms of laying are 4 kinds of typical arrangement modes one or a combination set of; Described 4 kinds of typical arrangement modes are positive and negative cross arrangement, the arrangement of positive and negative cross stratification, positive and negative bidirectional crossed horizontal slice arrangement, positive and negative bidirectional crossed vertical demixing arrangement;
2) determining to affect the major parameter that cable thermal stability calculates is: the cross section of cable, conductor diameter, calculating external diameter, current-carrying capacity, resistance coefficient, density, specific heat capacity and coefficient of heat conductivity.
3) respectively model is built to 4 kinds of typical arrangement modes; Model adopts ansys software to set up cable transverse section model, the layering of application ring-type, and to set layering place in cable be node, applies radiation heat load, and be carried on node by the major parameter of above-mentioned cable at node;
4) according to the model built up, when adopting pre-service long as cable, the thermal stability of work calculates, and thermal stability when aftertreatment is short-circuit current rush calculates, and calculates the thermal stability of shipboard cable.
2. method according to claim 1, is characterized in that, the calculating in step 4) is specific as follows:
4.1) according to main cable setting thermal stability hierarchical model;
4.2) design conditions and operating mode is confirmed;
4.3) main cable arrangement mode is determined;
4.4) maximum duty confirms;
4.5) adopt ansys software to set up realistic model and complete calculating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442303.3A CN104992033A (en) | 2015-07-24 | 2015-07-24 | Simulation calculation method for thermal stability of ship cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442303.3A CN104992033A (en) | 2015-07-24 | 2015-07-24 | Simulation calculation method for thermal stability of ship cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104992033A true CN104992033A (en) | 2015-10-21 |
Family
ID=54303847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510442303.3A Pending CN104992033A (en) | 2015-07-24 | 2015-07-24 | Simulation calculation method for thermal stability of ship cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104992033A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108416078A (en) * | 2018-01-12 | 2018-08-17 | 国家电网公司 | A kind of method and system of the short-circuit thermal stability of inspection portable short-circuit grounding wire |
| CN109767872A (en) * | 2018-12-27 | 2019-05-17 | 中国舰船研究设计中心 | Heavy DC cable arrangements method, bunch of cables and Ship Electrical Power System |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865945A (en) * | 2012-08-24 | 2013-01-09 | 华南理工大学 | Method for measuring temperature of conductors of three-core cable |
| CN102880747A (en) * | 2012-09-06 | 2013-01-16 | 上海海事大学 | Method for modeling, calculating and analyzing temperature fields of photoelectric composite submarine cable |
| CN102928101A (en) * | 2012-10-31 | 2013-02-13 | 广州供电局有限公司 | Evaluation method of 10kV three-core cable conductor temperature |
| CN103793558A (en) * | 2014-01-15 | 2014-05-14 | 西安交通大学 | Finite element method-based cable group wire core transient temperature calculation method |
-
2015
- 2015-07-24 CN CN201510442303.3A patent/CN104992033A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865945A (en) * | 2012-08-24 | 2013-01-09 | 华南理工大学 | Method for measuring temperature of conductors of three-core cable |
| CN102880747A (en) * | 2012-09-06 | 2013-01-16 | 上海海事大学 | Method for modeling, calculating and analyzing temperature fields of photoelectric composite submarine cable |
| CN102928101A (en) * | 2012-10-31 | 2013-02-13 | 广州供电局有限公司 | Evaluation method of 10kV three-core cable conductor temperature |
| CN103793558A (en) * | 2014-01-15 | 2014-05-14 | 西安交通大学 | Finite element method-based cable group wire core transient temperature calculation method |
Non-Patent Citations (2)
| Title |
|---|
| 赵纯领 等: "基于红外测量的船用电缆缆芯温度仿真", 《中国修船》 * |
| 郑雁翎 等: "电力电缆载流量计算的研究与发展", 《电线电缆》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108416078A (en) * | 2018-01-12 | 2018-08-17 | 国家电网公司 | A kind of method and system of the short-circuit thermal stability of inspection portable short-circuit grounding wire |
| CN108416078B (en) * | 2018-01-12 | 2022-11-11 | 国家电网有限公司 | Method and system for testing short circuit thermal stability of portable short circuit grounding wire |
| CN109767872A (en) * | 2018-12-27 | 2019-05-17 | 中国舰船研究设计中心 | Heavy DC cable arrangements method, bunch of cables and Ship Electrical Power System |
| CN109767872B (en) * | 2018-12-27 | 2022-12-06 | 中国舰船研究设计中心 | Large-current direct-current cable arrangement method, cable bundle and ship power system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11190010B2 (en) | Annular bearer network and service bearing implementation method therefor | |
| CN103472369B (en) | Prequalification test system and evaluating method for evaluating long-term electric property of direct-current extruded dielectric submarine cable system | |
| CN103986151B (en) | A kind of computational methods exchanging the powered scale of receiving end electrical network direct current | |
| CN105205202B (en) | A kind of carrying current calculation method | |
| Fan et al. | Method to determine the maximum generation capacity of distribution generation in low‐voltage distribution feeders | |
| CN104992033A (en) | Simulation calculation method for thermal stability of ship cable | |
| CN109167362B (en) | Power distribution network load flow calculation method considering cable thermal characteristics | |
| CN203465380U (en) | Preliminary identification test system used for evaluating long-term electrical performance of extruded insulated direct-current submarine cable system | |
| CN103199566A (en) | Cascading failure analytical method of alternating current and direct current multiple-series electric system | |
| Corea‐Araujo et al. | Optimum design of hybrid HVDC circuit breakers using a parallel genetic algorithm and a MATLAB‐EMTP environment | |
| CN104268328A (en) | Real-time dada based electromagnetic closed loop conductive operation system | |
| Kriukov et al. | Smart energy management in distribution networks with increasing number of electric vehicles | |
| CN104393594B (en) | Analytical calculation method for medium voltage network flow of urban rail transit | |
| Miller et al. | A grid reinforcement approach for an optimized planning of high‐voltage distribution grids under consideration of line loading indicators | |
| CN104407247A (en) | Method and device for determining carrying capacity of two parallel direct-buried cables | |
| Wu et al. | Substation grounding studies with more accurate fault analysis and simulation strategies | |
| CN113971356A (en) | Method for optimizing in-out electric field path of live-wire work of extra-high voltage direct current line | |
| Myhre et al. | RELSAD: A Python package for reliability assessment of modern distribution systems | |
| Wang et al. | PMU-based angle constraint active management on 33kV distribution network | |
| CN104915469A (en) | Simple method for calculating short-term maximum allowable overload current of submarine electric power cable | |
| CN109740294A (en) | Method and device for determining parameters of alternating current cable after direct current transformation | |
| CN103400309A (en) | Method for evaluating influence of ultrahigh-voltage access on stability of provincial power grid | |
| Zhang et al. | Calculation method of critical voltage drop of DC commutation process considering AC system three‐phase fault moments | |
| CN204596483U (en) | Heatproof insulated cable | |
| CN108390374A (en) | Turned for routing resource and system based on big data analysis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151021 |