CN110287517A - A kind of anti-continuous collapse system and method for power transmission tower - Google Patents
A kind of anti-continuous collapse system and method for power transmission tower Download PDFInfo
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- CN110287517A CN110287517A CN201910392219.3A CN201910392219A CN110287517A CN 110287517 A CN110287517 A CN 110287517A CN 201910392219 A CN201910392219 A CN 201910392219A CN 110287517 A CN110287517 A CN 110287517A
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Abstract
A kind of anti-continuous collapse system and method for power transmission tower, comprising: acceleration transducer is installed at the measuring point of power transmission tower, acquires the acceleration information of the power transmission tower, is obtained the corresponding acceleration information of sampling instant and is sent to finite element analysis module；Finite element analysis module is installed on computer, sends broken string instruction for judging whether according to the acceleration information；Wire clipper is mounted on power transmission tower cross-arm, and the transmission pressure between the power transmission tower is cut off according to broken string instruction；Acceleration transducer and the finite element analysis module and the wire clipper communication connection.Acceleration transducer and finite element analysis module in this programme carry out risk analysis on the basis of obtaining power transmission tower stress condition, once in the hole, wire clipper instructs the conducting wire between cutting power transmission tower and adjacent power tower to contact according to broken string, the power transmission tower continuous collapse event occurred due to involving for conducting wire is prevented, power transmission tower is considerably reduced and the probability that string falls occurs.
Description
Technical field
The present invention relates to power transmission tower design fields, and in particular to a kind of anti-continuous collapse system and method for power transmission tower.
Background technique
In transmission line of electricity, if being once broken or being relaxed by a conducting wire in certain span, due to leading for adjacent span
Line is not cut off in time, so the wire tension at left and right sides of the hanging point is widely different, huge out-of-balance force can be defeated to this
Pylon brings very big load, therefore power transmission tower is often toppled over.Therefore, when many in the picture of disaster, power transmission tower
After collapsing completely, still there are many conducting wires to be firmly attached on power transmission tower.After the power transmission tower is toppled over, all conducting wires in the span
It will relax, tension acutely declines, and adjacent power tower is caused also to be toppled over.Such vicious circle often leads to entire strain insulator
The power transmission tower of section occurs bunchiness and collapses.
In this way in post-disaster reconstruction, the power transmission tower that these bunchiness collapse requires to erect again, could be extensive after the completion of erection
Multiple power supply, has thus seriously affected the power supply in disaster area, and improves the expense for rebuilding transmission line of electricity.
Currently, the main design load by improving power transmission tower, increases the geometry rule of the stressed members such as the oblique material of power transmission tower master
Lattice come reduce string fall probability.However, being set in the place that hurricane irregularly occurs by the design load under accidental maximum wind velocity
Meter power transmission tower stressed member be it is unreasonable, this cost that will lead to power transmission tower route increases to the degree for being difficult to bear.
Summary of the invention
The load deficiency of component is accepted in order to solve the increase power transmission tower in the presence of the prior art to avoid transmission line of electricity
The problem of power transmission tower continuous collapse caused by being destroyed by natural conditions, the present invention provides a kind of anti-continuous collapse systems of power transmission tower
And method.
Present invention provide the technical scheme that a kind of anti-continuous collapse system of power transmission tower, the system, comprising: acceleration
Sensor, finite element analysis module and multiple wire clippers；
The acceleration transducer is installed at the measuring point of power transmission tower, is acquired the acceleration information of the power transmission tower, is obtained
The corresponding acceleration information of sampling instant is simultaneously sent to the finite element analysis module；
The finite element analysis module is installed on computer, for judging whether to send according to the acceleration information
Broken string instruction；
The wire clipper is mounted on power transmission tower cross-arm, cuts off the transmission of electricity between the power transmission tower according to the broken string instruction
Conducting wire；
The acceleration transducer and the finite element analysis module and the wire clipper communication connection.
Preferably, the acceleration transducer, comprising:
Acquisition module and data transfer module；
The acquisition module is mounted at the measuring point of power transmission tower, acquires adding for the power transmission tower according to preset sampling instant
Speed data obtains the corresponding acceleration information of sampling instant；
The corresponding acceleration information of the sampling instant is sent to the finite element analysis mould by the data transfer module
Block.
Preferably, the finite element analysis module, comprising:
Model submodule；
The modeling submodule for constructing and updating the geometrical model of power transmission tower and conducting wire to be measured, and passes through beam element
Force analysis and cable elements force analysis generate finite element model, and by the freedom of the predeterminated position on the finite element model
Degree is set as preset value, obtains initial finite element model.
Preferably, the finite element analysis module further include: computational submodule, judging submodule and priority block；
The corresponding acceleration information of the sampling instant is increased to the initial finite element model by the computational submodule
On, it obtains the axle power and moment of flexure on finite element model, and according to the axle power and moment of flexure, it is current that the power transmission tower is calculated
Stress；
The judging submodule, judges whether current stress is less than preset dangerous critical value, if being less than, the transmission of electricity
Tower is safe condition, does not formulate broken string instruction；Otherwise, the power transmission tower is precarious position, formulates broken string instruction；
The priority block is connect with all cutters, for according to the preferential of the wire clipper on power transmission tower cross-arm
The broken string instruction is sent to the wire clipper of highest priority by grade sequence.
Preferably, the axle power is calculate by the following formula:
N=ma
Wherein, N is axle power, and m is the quality of the power transmission tower part of the force, and a is adding for acceleration transducer acquisition
Speed data.
Preferably, the current stress of the power transmission tower is calculate by the following formula:
Wherein, f is the current stress of the power transmission tower, and γ is plastic ratio of member section, and W is cross-section elasticities modulus, N 'E
To consider the critical bearing capacity of Euler after partial safety factor for resistance, M is resultant bending moment, and N is axle power, and β is equivalent moment factor.
Preferably, on the power transmission tower cross-arm wire clipper priority orders, comprising:
Position based on wire clipper on power transmission tower cross-arm, according to from top to bottom, decreasing priority is set from the inside to the outside
It is fixed.
Preferably, wire clipper is mounted between every transmission pressure hanging point of power transmission tower cross-arm.
A kind of anti-continuous collapse method of power transmission tower, comprising:
It is installed on the acceleration information that the acceleration transducer at the measuring point of power transmission tower acquires the power transmission tower, is sampled
Moment corresponding acceleration information, and it is sent to finite element analysis module in real time；
It is installed on the corresponding acceleration information of sampling instant described in the finite element analysis module real-time reception on computer, and
The precarious position that the power transmission tower is judged according to the acceleration information, when judging that power transmission tower is in the hole, to broken string
Device sends broken string instruction, otherwise, does not send；
The wire clipper being installed on power transmission tower cross-arm cuts off the transmission of electricity between the power transmission tower according to the broken string instruction and leads
Line.
Preferably, the acceleration transducer being installed at the measuring point of power transmission tower acquires the acceleration degree of the power transmission tower
According to obtaining the corresponding acceleration information of sampling instant, and be sent to finite element analysis module in real time, comprising:
Acquisition module in acceleration transducer acquires the acceleration information of the power transmission tower according to preset sampling instant,
Obtain the corresponding acceleration information of sampling instant；
The corresponding acceleration information of the sampling instant is sent to described by the data transfer module in acceleration transducer
Finite element analysis module.
Preferably, sampling instant described in the finite element analysis module real-time reception being installed on computer is corresponding adds
Speed data, and judge according to the acceleration information precarious position of the power transmission tower, before further include:
The geometrical model of power transmission tower and conducting wire to be measured is constructed and updates using the modeling submodule in finite element analysis module,
And by beam element force analysis and cable elements force analysis, finite element model is generated；
Preset value is set by the freedom degree of the predeterminated position on the finite element model, obtains initial finite element model.
Preferably, sampling instant described in the finite element analysis module real-time reception being installed on computer is corresponding adds
Speed data, and judge according to the acceleration information precarious position of the power transmission tower, comprising:
The corresponding acceleration information of the sampling instant is increased to using the computational submodule in finite element analysis module
On the initial finite element model, the axle power and moment of flexure on finite element model are obtained, and according to the axle power and moment of flexure, is calculated
The stress current to the power transmission tower；
Judge whether current stress is less than preset dangerous critical value by the judging submodule in finite element analysis module,
If being less than, the power transmission tower is safe condition, does not formulate broken string instruction；Otherwise, the power transmission tower is precarious position, is formulated disconnected
Line；
By the priority block in finite element analysis module, broken string instruction is sent out according to preset priority orders
It send to the wire clipper on the power transmission tower cross-arm of highest priority.
Preferably, the axle power is calculate by the following formula:
N=ma
Wherein, N is axle power, and m is the quality of the power transmission tower part of the force, a be acceleration transducer acquisition and
Speed data.
Preferably, the current stress of the power transmission tower is calculate by the following formula:
Wherein, f is the current stress of the power transmission tower, and γ is plastic ratio of member section, and W is cross-section elasticities modulus, N 'E
To consider the critical bearing capacity of Euler after partial safety factor for resistance, M is resultant bending moment, and N is axle power, and β is equivalent moment factor.
Preferably, on the power transmission tower cross-arm wire clipper priority orders, comprising:
Position based on wire clipper on power transmission tower cross-arm, according to from top to bottom, decreasing priority is set from the inside to the outside
It is fixed.
Compared with prior art, the invention has the benefit that
Technical solution provided by the invention, comprising: acceleration transducer, finite element analysis module and multiple wire clippers；Institute
It states acceleration transducer to be installed at the measuring point of power transmission tower, acquires the acceleration information of the power transmission tower, obtain sampling instant pair
The acceleration information answered simultaneously is sent to the finite element analysis module；The finite element analysis module is installed on computer, is used
It is instructed according to the acceleration information, judging whether to send to break；The wire clipper is mounted on power transmission tower cross-arm, according to institute
State the transmission pressure between the broken string instruction cutting power transmission tower；The acceleration transducer and the finite element analysis module with
And the wire clipper communication connection.Acceleration transducer and finite element analysis module in this programme obtain power transmission tower stress condition
On the basis of carry out risk analysis, once it is in the hole, wire clipper according to broken string instruct cut power transmission tower with it is adjacent defeated
Conducting wire connection between pylon, it is therefore prevented that the power transmission tower continuous collapse event occurred due to involving for conducting wire is greatly lowered
The probability that string falls occurs for power transmission tower.
In addition, there was only three acceleration transducer, finite element analysis module and wire clipper hardware devices, structure in the present invention
Simply, manufacturing cost is low.
Detailed description of the invention
Fig. 1 is the anti-continuous collapse system construction drawing of power transmission tower of the invention；
Fig. 2 is the transmission line of electricity figure under the normal condition of the embodiment of the present invention；
Fig. 3 is the transmission line of electricity figure under the broken string state of the embodiment of the present invention；
Fig. 4 is the installation diagram of the cutter in the present invention.
Specific embodiment
For a better understanding of the present invention, the contents of the present invention are done further with example with reference to the accompanying drawings of the specification
Explanation.
Embodiment 1:
A kind of anti-continuous collapse system of power transmission tower is present embodiments provided, system construction drawing is as shown in Figure 1.
The present invention is mainly made of following 3 components:
Acceleration transducer, finite element analysis module and multiple wire clippers；
The acceleration transducer is installed at the measuring point of power transmission tower, is acquired the acceleration information of the power transmission tower, is obtained
The corresponding acceleration information of sampling instant is simultaneously sent to the finite element analysis module；
The finite element analysis module is installed on computer, disconnected for according to the homologous thread, judging whether to send
Line；
The wire clipper is mounted on power transmission tower cross-arm, cuts off the transmission of electricity between the power transmission tower according to the broken string instruction
Conducting wire；
The acceleration transducer and the finite element analysis module and the wire clipper communication connection.
Component 1: the acceleration transducer of power transmission tower；
Acquisition module in the acceleration transducer of power transmission tower is mainly used to detect power transmission tower and conducting wire accelerates at measuring point
The corresponding relationship of degree and time, obtains relation curve, and be sent to finite element analysis module by data transfer module, to pass through
FEM calculation determines that the stress of power transmission tower and each stressed member of conducting wire provides foundation.
Component 2: finite element analysis module；
Although dynamometer can be arranged by monitoring strain or at conducting wire hanging point to detect the stress of power transmission tower.
However, the way has the disadvantage in that
It needs that multiple strain gauges are arranged on each component of power transmission tower and could calculate the stress of power transmission tower, and transmit electricity
Tower has thousands of a components, and cost is very high；And the life and reliability of strain gauge is all far away from acceleration transducer.
The dynamometer of conducting wire is at high price, and weight is very big, is arranged all very high in tower top installation cost and maintenance cost.
Therefore, this patent is calculated entire using the data of acceleration transducer as boundary condition using finite element software
The stress of power transmission tower and conducting wire determines main stress in power transmission tower and conducting wire according to the information of limited acceleration transducer
The force-bearing situation of component, and assess the safety of entire power transmission tower, the stress of accurate judgement power transmission tower, accurate judgement are necessary
Cut-off parts conducting wire is to ensure opportunity of entire power transmission tower safety.
The processing step of finite element analysis module is as follows:
(1) geometrical model of power transmission tower and conducting wire is established,
(2) beam element force analysis and the discrete power transmission tower of cable elements force analysis is respectively adopted and transmission pressure generation is limited
Meta-model；
(3) constitutive relation of power transmission tower and conducting wire is inputted, and displacement freedom at 4 nodes of power transmission tower column foot is all provided with
It is set to preset value, such as preset value can take 0, obtain initial finite element model, initial finite element model at this time is to apply
Power.
(4) curve of the acceleration and time that measure acceleration transducer, and wireless sensor technology is used, test is tied
Fruit is sent on computer.
(5) by each monitoring point of power transmission tower acceleration and the homologous thread of time be applied to corresponding position on power transmission tower
On the finite element node at place.
(6) large deformation of finite element analysis software and big displacement switch are opened, carries out finite element transient analysis and calculates.
Component 3: wire clipper；
Wire clipper is mounted on the cross-arm of transmission of electricity cross of power transmission tower, as shown in Figure 4.
According to the calculated result of finite element analysis software, after determining broken string scheme, broken string instruction is issued, is executed by wire clipper
Associated tracks are cut off in instruction, and broken string scheme is as follows:
(1) finite element transient analysis is utilized as a result, extracting the axle power N and moment M of power transmission tower main material and oblique material；Axle power passes through
Following formula calculates:
N=ma
Wherein, N is axle power, and m is the quality of the power transmission tower part of the force, and a is adding for acceleration transducer acquisition
Speed data.
(2) following formula is utilized, judges the safety of main material and oblique material, when the design stress of main material reaches 0.85 times,
Illustrate that power transmission tower is dangerous, starts with finite element broken string and calculate.
Wherein, γ is plastic ratio of member section, and W is cross-section elasticities modulus, N 'ETo consider the Europe after partial safety factor for resistance
Critical bearing capacity is drawn, M isSuffered resultant bending moment, wherein M1x、M2x、M1y、M2yFor
Moment of flexure within the scope of calculated member end is maximum, and N is axial pressure suffered by component, and β is equivalent moment factor, fyIt is strong for steel
Spend design value.
(3) for the priority block in finite element analysis module by from the bottom to top, sequence from the inside to the outside cuts off conducting wire.By
Under supreme reason are as follows: if being first turned off the conducting wire above power transmission tower, which is possible to fall down on the conducting wire for hanging over lower section,
This will lead to the conducting wire short circuit of lower section, loses ability to transmit electricity and increases the gravitational load of lower Square wire；From the inside to the outside the reason of are as follows:
Inner lead is close to the central axis of power transmission tower, and in the identical situation of tension, the moment of flexure that it generates power transmission tower can be much smaller.
(4) conducting wire in a span is only cut off every time, after cutting, by this root conducting wire in finite element model
Leave out, transient state large deformation and big displacement finite element analysis is carried out using new model, and extract power transmission tower master in calculated result
The axle power and moment of flexure of oblique material, and its safety is judged using formula.
(5) if each power transmission tower that calculated result shows that tower wire body is fastened is very safe, just after the section lead is cut off
Remaining conducting wire need not be cut out.Otherwise, by the sequence in (3), associated tracks are cut off, until calculated result shows each power transmission tower
It will not all collapse.
In actual conditions, under normal circumstances, transmission line of electricity figure is as shown in Figure 2；Using one of the present embodiment power transmission tower
Anti- continuous collapse device allows the secondary member in Transmission Tower System to occur part under extreme loading and damages, in the present embodiment
Finite element analysis module sends broken string instruction to wire clipper, cuts the connecting wire between power transmission tower, the effect picture after cutting is such as
It shown in Fig. 3, ensure that main member is intact, reduce the failure loss of disaster.
Embodiment 2:
Present embodiments provide a kind of anti-continuous collapse method of power transmission tower, comprising:
It is installed on the acceleration information that the acceleration transducer at the measuring point of power transmission tower acquires the power transmission tower, is sampled
Moment corresponding acceleration information, and it is sent to finite element analysis module in real time；
It is installed on the corresponding acceleration information of sampling instant described in the finite element analysis module real-time reception on computer, and
The precarious position that the power transmission tower is judged according to the acceleration information, when judging that power transmission tower is in the hole, to broken string
Device sends broken string instruction, otherwise, does not send；
The wire clipper being installed on power transmission tower cross-arm cuts off the transmission of electricity between the power transmission tower according to the broken string instruction and leads
Line.
The acceleration transducer being installed at the measuring point of power transmission tower acquires the acceleration information of the power transmission tower, obtains
The corresponding acceleration information of sampling instant, and it is sent to finite element analysis module in real time, comprising:
Acquisition module in acceleration transducer acquires the acceleration information of the power transmission tower according to preset sampling instant,
Obtain the corresponding acceleration information of sampling instant；
The corresponding acceleration information of the sampling instant is sent to described by the data transfer module in acceleration transducer
Finite element analysis module.
The corresponding acceleration degree of sampling instant described in the finite element analysis module real-time reception being installed on computer
According to, and judge according to the acceleration information precarious position of the power transmission tower, before further include:
The geometrical model of power transmission tower and conducting wire to be measured is constructed and updates using the modeling submodule in finite element analysis module,
And by beam element force analysis and cable elements force analysis, finite element model is generated；
Preset value is set by the freedom degree of the predeterminated position on the finite element model, obtains initial finite element model.
The corresponding acceleration degree of sampling instant described in the finite element analysis module real-time reception being installed on computer
According to, and judge according to the acceleration information precarious position of the power transmission tower, comprising:
The corresponding acceleration information of the sampling instant is increased to using the computational submodule in finite element analysis module
On the initial finite element model, the axle power and moment of flexure on finite element model are obtained, and according to the axle power and moment of flexure, is calculated
The stress current to the power transmission tower；
Judge whether current stress is less than preset dangerous critical value by the judging submodule in finite element analysis module,
If being less than, the power transmission tower is safe condition, does not formulate broken string instruction；Otherwise, the power transmission tower is precarious position, is formulated disconnected
Line；
By the priority block in finite element analysis module, broken string instruction is sent out according to preset priority orders
It send to the wire clipper on the power transmission tower cross-arm of highest priority.
The axle power is calculate by the following formula:
N=ma
Wherein, N is axle power, and m is the quality of the power transmission tower part of the force, a be acceleration transducer acquisition and
Speed data.
The current stress of the power transmission tower is calculate by the following formula:
Wherein, f is the current stress of the power transmission tower, and γ is plastic ratio of member section, and W is cross-section elasticities modulus, N 'E
To consider the critical bearing capacity of Euler after partial safety factor for resistance, M is resultant bending moment, and N is axle power, and β is equivalent moment factor.
The priority orders of wire clipper on the power transmission tower cross-arm, comprising:
Position based on wire clipper on power transmission tower cross-arm, according to from top to bottom, decreasing priority is set from the inside to the outside
It is fixed.
Obviously, described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, all other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The above is only the embodiment of the present invention, are not intended to restrict the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent substitution, improvement and etc. done, be all contained in apply pending scope of the presently claimed invention it
It is interior.
Claims (15)
1. a kind of anti-continuous collapse system of power transmission tower, which is characterized in that the system, comprising:
Acceleration transducer, finite element analysis module and multiple wire clippers；
The acceleration transducer is installed at the measuring point of power transmission tower, is acquired the acceleration information of the power transmission tower, is sampled
Moment corresponding acceleration information is simultaneously sent to the finite element analysis module；
The finite element analysis module is installed on computer, sends broken string for judging whether according to the acceleration information
Instruction；
The wire clipper is mounted on power transmission tower cross-arm, is cut off the transmission of electricity between the power transmission tower according to the broken string instruction and is led
Line；
The acceleration transducer and the finite element analysis module and the wire clipper communication connection.
2. the system as claimed in claim 1, which is characterized in that the acceleration transducer, comprising:
Acquisition module and data transfer module；
The acquisition module is mounted at the measuring point of power transmission tower, and the acceleration of the power transmission tower is acquired according to preset sampling instant
Data obtain the corresponding acceleration information of sampling instant；
The corresponding acceleration information of the sampling instant is sent to the finite element analysis module by the data transfer module.
3. the system as claimed in claim 1, which is characterized in that the finite element analysis module, comprising:
Model submodule；
The modeling submodule for constructing and updating the geometrical model of power transmission tower and conducting wire to be measured, and passes through beam element stress
Analysis and cable elements force analysis generate finite element model, and the freedom degree of the predeterminated position on the finite element model are set
It is set to preset value, obtains initial finite element model.
4. system as claimed in claim 3, which is characterized in that the finite element analysis module further include: computational submodule is sentenced
Disconnected submodule and priority block；
The computational submodule increases to the corresponding acceleration information of the sampling instant on the initial finite element model,
It obtains the axle power and moment of flexure on finite element model, and according to the axle power and moment of flexure, is calculated that the power transmission tower is current to answer
Power；
The judging submodule, judges whether current stress is less than preset dangerous critical value, if being less than, the power transmission tower is
Safe condition does not formulate broken string instruction；Otherwise, the power transmission tower is precarious position, formulates broken string instruction；
The priority block is connect with all cutters, suitable for the priority according to the wire clipper on power transmission tower cross-arm
The broken string instruction is sent to the wire clipper of highest priority by sequence.
5. system as claimed in claim 4, which is characterized in that the axle power is calculate by the following formula:
N=ma
Wherein, N is axle power, and m is the quality of the power transmission tower part of the force, and a is the acceleration of acceleration transducer acquisition
Data.
6. system as claimed in claim 4, which is characterized in that the current stress of the power transmission tower is calculate by the following formula:
Wherein, f is the current stress of the power transmission tower, and γ is plastic ratio of member section, and W is cross-section elasticities modulus, N 'ETo examine
The critical bearing capacity of Euler after considering partial safety factor for resistance, M is resultant bending moment, and N is axle power, and β is equivalent moment factor.
7. system as claimed in claim 4, which is characterized in that the priority orders of wire clipper on the power transmission tower cross-arm, packet
It includes:
Position based on wire clipper on power transmission tower cross-arm, according to from top to bottom, decreasing priority is set from the inside to the outside.
8. the system as claimed in claim 1, which is characterized in that
Wire clipper is mounted between every transmission pressure hanging point of power transmission tower cross-arm.
9. a kind of anti-continuous collapse method of power transmission tower characterized by comprising
It is installed on the acceleration information that the acceleration transducer at the measuring point of power transmission tower acquires the power transmission tower, obtains sampling instant
Corresponding acceleration information, and it is sent to finite element analysis module in real time；
It is installed on the corresponding acceleration information of sampling instant described in the finite element analysis module real-time reception on computer, and according to
The acceleration information judges the precarious position of the power transmission tower, when judging that power transmission tower is in the hole, sends out to wire clipper
It send broken string to instruct, otherwise, does not send；
The wire clipper on power transmission tower cross-arm is installed on according to the transmission pressure between the broken string instruction cutting power transmission tower.
10. method as claimed in claim 9, which is characterized in that the acceleration sensing being installed at the measuring point of power transmission tower
Device acquires the acceleration information of the power transmission tower, obtains the corresponding acceleration information of sampling instant, and be sent to finite element in real time
Analysis module, comprising:
Acquisition module in acceleration transducer acquires the acceleration information of the power transmission tower according to preset sampling instant, obtains
The corresponding acceleration information of sampling instant；
The corresponding acceleration information of the sampling instant is sent to described limited by the data transfer module in acceleration transducer
Meta analysis module.
11. method as claimed in claim 9, which is characterized in that the finite element analysis module being installed on computer is real
When receive the corresponding acceleration information of the sampling instant, and the dangerous shape of the power transmission tower is judged according to the acceleration information
State, before further include:
It is constructed using the modeling submodule in finite element analysis module and updates the geometrical model of power transmission tower and conducting wire to be measured, and led to
Beam element force analysis and cable elements force analysis are crossed, finite element model is generated；
Preset value is set by the freedom degree of the predeterminated position on the finite element model, obtains initial finite element model.
12. method as claimed in claim 9, which is characterized in that the finite element analysis module being installed on computer is real
When receive the corresponding acceleration information of the sampling instant, and the dangerous shape of the power transmission tower is judged according to the acceleration information
State, comprising:
The corresponding acceleration information of the sampling instant increased to using the computational submodule in finite element analysis module described
On initial finite element model, the axle power and moment of flexure on finite element model are obtained, and according to the axle power and moment of flexure, institute is calculated
State the current stress of power transmission tower；
Judge whether current stress is less than preset dangerous critical value by the judging submodule in finite element analysis module, if small
In then the power transmission tower is safe condition, does not formulate broken string instruction；Otherwise, the power transmission tower is precarious position, formulates broken string and refers to
It enables；
By the priority block in finite element analysis module, the broken string is instructed and is sent to according to preset priority orders
Wire clipper on the power transmission tower cross-arm of highest priority.
13. method as claimed in claim 12, which is characterized in that the axle power is calculate by the following formula:
N=ma
Wherein, N is axle power, and m is the quality of the power transmission tower part of the force, and a is that the acceleration transducer acquires and speed
Data.
14. method as claimed in claim 12, which is characterized in that the current stress of the power transmission tower is calculate by the following formula:
Wherein, f is the current stress of the power transmission tower, and γ is plastic ratio of member section, and W is cross-section elasticities modulus, N 'ETo examine
The critical bearing capacity of Euler after considering partial safety factor for resistance, M is resultant bending moment, and N is axle power, and β is equivalent moment factor.
15. method as claimed in claim 9, which is characterized in that the priority orders of wire clipper on the power transmission tower cross-arm, packet
It includes:
Position based on wire clipper on power transmission tower cross-arm, according to from top to bottom, decreasing priority is set from the inside to the outside.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864738A (en) * | 2019-11-27 | 2020-03-06 | 广东电网有限责任公司 | Wide-area safety monitoring system and control method for power transmission tower |
| CN111553088A (en) * | 2020-05-07 | 2020-08-18 | 广东技术师范大学 | Development method and application method of automatic clamping device for replacement and breakage of ground wire |
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2019
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864738A (en) * | 2019-11-27 | 2020-03-06 | 广东电网有限责任公司 | Wide-area safety monitoring system and control method for power transmission tower |
| CN110864738B (en) * | 2019-11-27 | 2022-01-25 | 广东电网有限责任公司 | Wide-area safety monitoring system and control method for power transmission tower |
| CN111553088A (en) * | 2020-05-07 | 2020-08-18 | 广东技术师范大学 | Development method and application method of automatic clamping device for replacement and breakage of ground wire |
| CN111553088B (en) * | 2020-05-07 | 2023-06-13 | 广东技术师范大学 | Development method and application method of automatic clamping device for replacing broken ground wire |
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