CN108827483A - Bare conductor Warm status method for early warning and system - Google Patents
Bare conductor Warm status method for early warning and system Download PDFInfo
- Publication number
- CN108827483A CN108827483A CN201810271524.2A CN201810271524A CN108827483A CN 108827483 A CN108827483 A CN 108827483A CN 201810271524 A CN201810271524 A CN 201810271524A CN 108827483 A CN108827483 A CN 108827483A
- Authority
- CN
- China
- Prior art keywords
- bare conductor
- real
- temperature
- time
- current
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The embodiment of the present invention provides a kind of bare conductor Warm status method for early warning and system, belongs to power system monitoring field.This method includes：Acquire the real time temperature of current environment, the real-time current-carrying value of real-time wind-force, real-time intensity of sunshine and the bare conductor；Temperature rise value of the bare conductor zero load without stream under current environment is determined according to external environment real time temperature, real-time wind-force and real-time intensity of sunshine；The sum of temperature rise value of the bare conductor zero load without stream under external environment real time temperature and current environment is calculated to obtain the unloaded operation temperature of bare conductor；Determine the theoretical temperatures of bare conductor；The heat for acquiring the bare conductor patrols actual temperature；Determine the contact resistance value of bare conductor and fixing clamper；Early warning is carried out when the contact resistance value of bare conductor and fixing clamper is greater than given threshold.The bare conductor Warm status method for early warning and system can find bare conductor overheat hidden danger in time and carry out early warning.
Description
Technical field
The present invention relates to power system monitorings, more particularly to bare conductor Warm status method for early warning and system.
Background technique
Bare conductor is widely applied in railway contact line and electric substation, such as contact net copper wire material, contact net steel-cored aluminium strand
Material, the soft bus in electric substation is also steel-cored aluminium strand material.Bare conductor persistent fever will cause stranded, broken lot, threaten iron
Road transportation safety, therefore in the daily tour of contact net and electric substation and service work, find that bare conductor overheat is gone forward side by side in time
Row processing is an important process, at present for the heat monitoring of bare conductor, relies primarily on infrared radiation thermometer or on-line monitoring system,
Both monitoring methods can only determine the Warm status of bare conductor whether in normal range (NR), but naked by analyzing the height of temperature
In the additional problem of temperature rise of exception when conductor is run, temperature online monitoring system has significant limitations.
Summary of the invention
The purpose of the embodiment of the present invention is that providing a kind of bare conductor Warm status method for early warning and system, the bare conductor Warm status
Method for early warning and system can find bare conductor overheat hidden danger in time and carry out early warning.
To achieve the goals above, the embodiment of the present invention provides a kind of bare conductor Warm status method for early warning, and this method includes：
Acquire the real time temperature of current environment, the real-time current-carrying value of real-time wind-force, real-time intensity of sunshine and the bare conductor；According to institute
It states real time temperature, the real-time wind-force and the real-time intensity of sunshine and determines that the bare conductor zero load is without stream under current environment
Temperature rise value；The sum for calculating the temperature rise value of the bare conductor zero load without stream under the real time temperature and current environment is described naked to obtain
The unloaded operation temperature of conductor；According to the unloaded operation temperature of the bare conductor, maximum permissible temperature of the bare conductor, described
Real-time current-carrying value, the correction coefficient of permission the current-carrying value and the bare conductor of the bare conductor under various circumstances of bare conductor
Determine the theoretical temperatures of the bare conductor；When the theoretical temperatures of the bare conductor are greater than the maximum permissible temperature of the bare conductor
Carry out early warning.
Preferably, the theoretical temperatures of the bare conductor are calculated by following formula：Its
In, θ0For the unloaded operation temperature of the bare conductor, θeFor the maximum permissible temperature of the bare conductor, IFFor the bare conductor
Real-time current-carrying value, IeFor the permission current-carrying value of the bare conductor, K is the correction coefficient of the bare conductor under various circumstances.
Preferably, the correction coefficient is determined according to the height above sea level of the bare conductor and the real time temperature of environment.
Preferably, this method further includes：The heat for acquiring the bare conductor patrols actual temperature；According to the real-time of the bare conductor
Current-carrying value, working application time, the specific heat capacity of the bare conductor, fixing clamper quality, the heat of the fixed bare conductor and equipment patrol reality
Border temperature and the theoretical temperatures of the bare conductor determine the contact resistance value of the bare conductor Yu the fixing clamper；Described
The contact resistance value of bare conductor and fixing clamper carries out early warning when being greater than given threshold.
Preferably, the contact resistance value of the bare conductor and the fixing clamper is calculated by following formula：Wherein, IFFor the real-time current-carrying value of the bare conductor, t is the working application time, and C is described
The specific heat capacity of bare conductor, m are the fixing clamper quality, θEActual temperature, θ are patrolled for the heatFFor the theory temperature of the bare conductor
Degree.
The embodiment of the present invention also provides a kind of bare conductor Warm status early warning system, which includes：Acquisition module calculates mould
Block and warning module, wherein the acquisition module is used to acquire the real time temperature, real-time wind-force, real-time sunshine of current environment
The real-time current-carrying value of intensity and the bare conductor；The computing module is used for according to the real time temperature, the real-time wind-force
And the real-time intensity of sunshine determines the temperature rise value of the bare conductor zero load without stream under current environment；Calculate the real time temperature
Sum with temperature rise value of the bare conductor zero load without stream described under current environment is to obtain the unloaded operation temperature of the bare conductor；According to
It is the unloaded operation temperature of the bare conductor, the maximum permissible temperature of the bare conductor, the real-time current-carrying value of the bare conductor, described
The correction coefficient of permission the current-carrying value and the bare conductor of bare conductor under various circumstances determines the theory temperature of the bare conductor
Degree；The warning module is used to carry out when the theoretical temperatures of the bare conductor are greater than the maximum permissible temperature of the bare conductor pre-
It is alert.
Preferably, the computing module is calculated the theoretical temperatures of the bare conductor by following formula：Wherein, θ0For the unloaded operation temperature of the bare conductor, θeFor the highest of the bare conductor
Allow temperature, IFFor the real-time current-carrying value of the bare conductor, IeFor the permission current-carrying value of the bare conductor, K is that the bare conductor exists
Correction coefficient under varying environment.
Preferably, the acquisition module is also used to acquire the height above sea level of the bare conductor；The correction coefficient is according to institute
The real time temperature of the height above sea level and environment of stating bare conductor determines.
Preferably, the heat that the acquisition module is also used to acquire the bare conductor patrols actual temperature；The computing module is also
For according to the real-time current-carrying value of the bare conductor, working application time, the specific heat capacity of the bare conductor, the fixed bare conductor and setting
Standby fixing clamper quality, heat patrols actual temperature and the theoretical temperatures of the bare conductor determine the bare conductor and the fixation
The contact resistance value of wire clamp；The warning module is also used to be greater than setting in the contact resistance value of the bare conductor and fixing clamper
Early warning is carried out when threshold value.
Preferably, the computing module is calculated the contact resistance of the bare conductor Yu the fixing clamper by following formula
Value：Wherein, IFFor the real-time current-carrying value of the bare conductor, t is the working application time, and C is
The specific heat capacity of the bare conductor, m are the fixing clamper quality, θEActual temperature, θ are patrolled for the heatFFor the reason of the bare conductor
By temperature.
Through the above technical solutions, using bare conductor Warm status method for early warning provided by the invention and system, using current
The maximum permissible temperature, described of temperature rise value of the bare conductor zero load without stream under the real time temperature of environment, current environment, the bare conductor
Real-time current-carrying value, the correction coefficient of permission the current-carrying value and the bare conductor of the bare conductor under various circumstances of bare conductor
It determines the theoretical temperatures of the bare conductor, and is compared using the theoretical temperatures of bare conductor and the maximum permissible temperature of bare conductor
To carry out early warning, it can find that bare conductor overheats hidden danger in time.
The other feature and advantage of the embodiment of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is to further understand for providing to the embodiment of the present invention, and constitute part of specification, under
The specific embodiment in face is used to explain the present invention embodiment together, but does not constitute the limitation to the embodiment of the present invention.Attached
In figure：
Fig. 1 is the flow chart for the bare conductor Warm status method for early warning that one embodiment of the invention provides；
Fig. 2 be another embodiment of the present invention provides bare conductor Warm status method for early warning flow chart；
Fig. 3 is the structural schematic diagram for the bare conductor Warm status early warning system that one embodiment of the invention provides；
Fig. 4 is the schematic diagram for the bare conductor Warm status early warning system that one embodiment of the invention provides.
Description of symbols
1 acquisition module, 2 computing module
3 warning module, 4 bare conductor working method setting module
5 database, 11 sunlight intensity sensor
12 wind sensor, 13 environment temperature sensor
14 current-carrying value sampling module, 15 heat patrols value sampling module.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the embodiment of the present invention.It should be understood that this
Locate described specific embodiment and be merely to illustrate and explain the present invention embodiment, is not intended to restrict the invention embodiment.
Fig. 1 is the flow chart for the bare conductor Warm status method for early warning that one embodiment of the invention provides.As shown in Figure 1, the party
Method includes：Acquire the real time temperature of current environment, the real-time current-carrying value of real-time wind-force, real-time intensity of sunshine and the bare conductor
(step S11)；It is determined according to the real time temperature, the real-time wind-force and the real-time intensity of sunshine described under current environment
Temperature rise value of the bare conductor zero load without stream；(step S12)；Calculate the bare conductor zero load nothing under the real time temperature and current environment
The sum of the temperature rise value of stream is to obtain the unloaded operation temperature (step S13) of the bare conductor；According to the unloaded work of the bare conductor
Make temperature, the maximum permissible temperature of the bare conductor, the real-time current-carrying value of the bare conductor, the permission current-carrying value of the bare conductor
And the correction coefficient of the bare conductor under various circumstances determines the theoretical temperatures (step S14) of the bare conductor；Judgement is
The theoretical temperatures of the no bare conductor are greater than the maximum permissible temperature (step S15) of the bare conductor；In the reason of the bare conductor
Early warning (step S16) is carried out when being greater than the maximum permissible temperature of the bare conductor by temperature.
In the embodiment of the present invention, after operator determines geographical location, the geographical location can be read by internet
Affiliated county, area grade administrative area height above sea level, and by outdoor sensor, the current environment of automatic collection measuring and calculating point is warm in real time
Degree, real-time wind-force and real-time intensity of sunshine.According to the affiliated county in bare conductor geographical location, area's grade administrative area height above sea level and acquisition
Current environment real time temperature can from database confirm bare conductor under the real time temperature of different altitude height and environment
Correction coefficient.The temperature rise value (when zero load is without stream) of bare conductor can be according to current environment real time temperature, real-time wind-force and reality
When intensity of sunshine obtained from database.The real-time current-carrying value of bare conductor is substation busbars or outgoing current transformer
Primary current value.
After knowing above-mentioned parameter, the theoretical temperatures of the bare conductor can be calculated by following formula：Wherein, θ0For the unloaded operation temperature of the bare conductor, θeFor the highest of the bare conductor
Allow temperature, IFFor the real-time current-carrying value of the bare conductor, IeFor the permission current-carrying value of the bare conductor, K is that the bare conductor exists
Correction coefficient under varying environment.
Then, the maximum permissible temperature of the theoretical temperatures for the bare conductor being calculated and bare conductor is compared, naked
The theoretical temperatures of conductor carry out early warning when being greater than the maximum permissible temperature of bare conductor.
In addition, the increase of contact resistance is only basic reason in the additional problem of temperature rise of exception in bare conductor operation.Cause
The present invention also provides a kind of on the basis of method for early warning described above for this, according to contact resistance carry out early warning method,
It is specific as follows：
Fig. 2 be another embodiment of the present invention provides bare conductor Warm status method for early warning flow chart.As shown in Fig. 2, should
Method includes：The heat for acquiring the bare conductor patrols actual temperature (step S21)；According to the real-time current-carrying value of the bare conductor, do
Function time, the specific heat capacity of the bare conductor, fixing clamper quality, the heat of the fixed bare conductor and equipment patrol actual temperature and
The theoretical temperatures of the bare conductor determine the contact resistance value (step S22) of the bare conductor Yu the fixing clamper；Judge institute
Whether the contact resistance value for stating bare conductor and fixing clamper is greater than given threshold (step S23)；In the bare conductor and fixing line
The contact resistance value of folder carries out early warning (step S24) when being greater than given threshold.
The contact resistance value of the bare conductor and the fixing clamper is calculated by following formula：Wherein, IFFor the real-time current-carrying value of the bare conductor, t is the working application time, and C is described
The specific heat capacity of bare conductor, m are the fixing clamper quality, θEActual temperature, θ are patrolled for the heatFFor the theory temperature of the bare conductor
Degree.
After acquisition bare conductor heat patrols actual temperature, the actual difference of actual temperature can be patrolled according to theoretical temperatures and heat,
Calculate current bare conductor position contact resistance variation value, find bare conductor overheat hidden danger in time and issues alarm, the present invention
Embodiment under any season, any objective external environment, can accurately be caught using bare conductor contact resistance variation as determinating reference
Grasp the abnormal Warm status of bare conductor.
Fig. 3 is the structural schematic diagram for the bare conductor Warm status early warning system that one embodiment of the invention provides.As shown in figure 3,
The system includes：Acquisition module 1, computing module 2 and warning module 3, wherein the acquisition module 1 works as front ring for acquiring
The real-time current-carrying value of the real time temperature in border, real-time wind-force, real-time intensity of sunshine and the bare conductor；The computing module 2 is used
In determining that the bare conductor is empty under current environment according to the real time temperature, the real-time wind-force and the real-time intensity of sunshine
Carry the temperature rise value without stream；The sum of the temperature rise value of the bare conductor zero load without stream under the real time temperature and current environment is calculated to obtain
To the unloaded operation temperature of the bare conductor；Allowed according to the unloaded operation temperature of the bare conductor, the highest of the bare conductor
Temperature, the real-time current-carrying value of the bare conductor, the permission current-carrying value of the bare conductor and the bare conductor are under various circumstances
Correction coefficient determine the theoretical temperatures of the bare conductor；The warning module 3 is used for big in the theoretical temperatures of the bare conductor
Early warning is carried out when the maximum permissible temperature of the bare conductor.
Fig. 4 is the schematic diagram for the bare conductor Warm status early warning system that one embodiment of the invention provides.As shown in figure 4, this is
System further includes database 5 and bare conductor working method setting module 4, and bare conductor working method setting module 4 is needed for setting
The basic condition of the bare conductor of monitoring, including：Add new bare conductor, bare conductor name, bare conductor model and bare conductor length.
Bare conductor name can make patrol officer accurately search position, and bare conductor model can be such that early warning system confirms from database 5
Material, specific heat capacity, bare conductor model, length can make early warning system confirm weight from database 5.
Acquisition module 1 is adopted including sunlight intensity sensor 11, wind sensor 12, environment temperature sensor 13, current-carrying value
Egf block 14 and heat patrol value sampling module 15, wherein heat patrol value sampling module 15 can be by temperature online monitoring system, intelligence
Energy robot inspection system or artificial heat patrol acquisition heat and patrol value.
Bare conductor current-carrying value sampling module 14 is by the programmable asynchronous RS232 interface of electric substation, with mailing address of electric substation
It manages device and carries out communications, acquire substation busbars, outgoing current transformer primary current value in real time.Option is：Electric current
Mutual inductor is associated with bare conductor.
The bare conductor that early warning system of the invention can the name every section electric current with substation busbars, outgoing respectively
Mutual inductor carries out communication association, and after association, bare conductor current-carrying value is that the substation busbars set or some electric current of outgoing are mutual
The primary current value of sensor.Current-carrying value sampling module 14 is acquired from electric substation's communication processing apparatus by asynchronous RS232 interface
Current transformer primary current value.
Heat patrols value sampling module 15 by the programmable asynchronous RS232 interface of electric substation, with electric substation's on-line temperature monitoring
System or Intelligent robot inspection system carry out data connection, acquire heat in real time and patrol temperature value.When no and on-line temperature monitoring
When system or Intelligent robot inspection system carry out data connection, heat can be manually entered and patrol temperature value.
Above-mentioned parameter is all stored in database 5, so that computing module 2 is called directly from database 5 to calculate.Data
Library 5 includes bare conductor model and weight data table, bare conductor model and specific heat capacity tables of data, bare conductor in different altitude height and
Correction coefficient data table under the real time temperature of environment, temperature rise value of the bare conductor in different temperature, wind-force, intensity of sunshine calculate
Tables of data, bare conductor allow current-carrying value and maximum permissible temperature tables of data, and the real-time current-carrying value of bare conductor is stored in tables of data, bare conductor
Theoretical temperatures are stored in tables of data, and bare conductor heat patrols temperature deposit tables of data, and bare conductor contact resistance is stored in tables of data.
Preferably, the computing module 2 is calculated the theoretical temperatures of the bare conductor by following formula：Wherein, θ0For the unloaded operation temperature of the bare conductor, θeFor the highest of the bare conductor
Allow temperature, IFFor the real-time current-carrying value of the bare conductor, IeFor the permission current-carrying value of the bare conductor, K is that the bare conductor exists
Correction coefficient under varying environment.
Preferably, the acquisition module 1 is also used to acquire the height above sea level of the bare conductor；The correction coefficient is according to institute
The real time temperature of the height above sea level and environment of stating bare conductor determines.
Preferably, the heat that the acquisition module 1 is also used to acquire the bare conductor patrols actual temperature；The computing module 2
Be also used to according to the real-time current-carrying value of the bare conductor, working application time, the specific heat capacity of the bare conductor, the fixed bare conductor with
The theoretical temperatures that the fixing clamper quality of equipment, heat patrol actual temperature and the bare conductor determine the bare conductor with it is described solid
The contact resistance value of alignment folder；The warning module 3 is also used to be greater than in the contact resistance value of the bare conductor and fixing clamper
Early warning is carried out when given threshold.
Preferably, the computing module 2 is calculated the contact resistance of the bare conductor Yu the fixing clamper by following formula
Value：Wherein, IFFor the real-time current-carrying value of the bare conductor, t is the working application time, and C is
The specific heat capacity of the bare conductor, m are the fixing clamper quality, θEActual temperature, θ are patrolled for the heatFFor the reason of the bare conductor
By temperature.
Through the above technical solutions, using bare conductor Warm status method for early warning provided by the invention and system, using current
The maximum permissible temperature, described of temperature rise value of the bare conductor zero load without stream under the real time temperature of environment, current environment, the bare conductor
Real-time current-carrying value, the correction coefficient of permission the current-carrying value and the bare conductor of the bare conductor under various circumstances of bare conductor
It determines the theoretical temperatures of the bare conductor, and is compared using the theoretical temperatures of bare conductor and the maximum permissible temperature of bare conductor
To carry out early warning, it can find that bare conductor overheats hidden danger in time.
The optional embodiment of the embodiment of the present invention is described in detail in conjunction with attached drawing above, still, the embodiment of the present invention is simultaneously
The detail being not limited in above embodiment can be to of the invention real in the range of the technology design of the embodiment of the present invention
The technical solution for applying example carries out a variety of simple variants, these simple variants belong to the protection scope of the embodiment of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the embodiment of the present invention pair
No further explanation will be given for various combinations of possible ways.
It will be appreciated by those skilled in the art that implementing the method for the above embodiments is that can pass through
Program is completed to instruct relevant hardware, which is stored in a storage medium, including some instructions are used so that single
Piece machine, chip or processor (processor) execute all or part of the steps of each embodiment the method for the application.And it is preceding
The storage medium stated includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory
The various media that can store program code such as (RAM, Random Access Memory), magnetic or disk.
In addition, any combination can also be carried out between a variety of different embodiments of the embodiment of the present invention, as long as it is not
The thought of the embodiment of the present invention is violated, equally should be considered as disclosure of that of the embodiment of the present invention.
Claims (10)
1. a kind of bare conductor Warm status method for early warning, which is characterized in that this method includes：
Acquire the real time temperature of current environment, the real-time current-carrying value of real-time wind-force, real-time intensity of sunshine and the bare conductor；
The bare conductor under current environment is determined according to the real time temperature, the real-time wind-force and the real-time intensity of sunshine
Temperature rise value of the zero load without stream；
The sum of the temperature rise value of the bare conductor zero load without stream under the real time temperature and current environment is calculated to obtain described naked lead
The unloaded operation temperature of body；
According to the unloaded operation temperature of the bare conductor, the maximum permissible temperature of the bare conductor, the real-time load of the bare conductor
Flow valuve, the correction coefficient of permission the current-carrying value and the bare conductor of the bare conductor under various circumstances determine the bare conductor
Theoretical temperatures；
Early warning is carried out when the theoretical temperatures of the bare conductor are greater than the maximum permissible temperature of the bare conductor.
2. bare conductor Warm status method for early warning according to claim 1, which is characterized in that the theoretical temperatures of the bare conductor
It is calculated by following formula：
Wherein, θ0For the unloaded operation temperature of the bare conductor, θeFor the bare conductor
Maximum permissible temperature, IFFor the real-time current-carrying value of the bare conductor, IeFor the permission current-carrying value of the bare conductor, K is described naked leads
The correction coefficient of body under various circumstances.
3. bare conductor Warm status method for early warning according to claim 1 or 2, which is characterized in that the correction coefficient according to
The height above sea level of the bare conductor and the real time temperature of environment determine.
4. bare conductor Warm status method for early warning according to claim 1 or 2, which is characterized in that this method further includes：
The heat for acquiring the bare conductor patrols actual temperature；
According to the real-time current-carrying value of the bare conductor, working application time, the specific heat capacity of the bare conductor, the fixed bare conductor and set
Standby fixing clamper quality, heat patrols actual temperature and the theoretical temperatures of the bare conductor determine the bare conductor and the fixation
The contact resistance value of wire clamp；
Early warning is carried out when the contact resistance value of the bare conductor and fixing clamper is greater than given threshold.
5. bare conductor Warm status method for early warning according to claim 4, which is characterized in that the bare conductor and the fixation
The contact resistance value of wire clamp is calculated by following formula：
Wherein, IFFor the real-time current-carrying value of the bare conductor, t is the working application time, and C is
The specific heat capacity of the bare conductor, m are the fixing clamper quality, θEActual temperature, θ are patrolled for the heatFFor the reason of the bare conductor
By temperature.
6. a kind of bare conductor Warm status early warning system, which is characterized in that the system includes：
Acquisition module, computing module and warning module, wherein
The acquisition module is used to acquire the real time temperature of current environment, real-time wind-force, real-time intensity of sunshine and described naked leads
The real-time current-carrying value of body；
The computing module is used to be determined according to the real time temperature, the real-time wind-force and the real-time intensity of sunshine current
The temperature rise value of the bare conductor zero load without stream under environment；Calculate the bare conductor zero load nothing under the real time temperature and current environment
The sum of the temperature rise value of stream is to obtain the unloaded operation temperature of the bare conductor；According to the unloaded operation temperature of the bare conductor, institute
State the maximum permissible temperature of bare conductor, the real-time current-carrying value of the bare conductor, the permission current-carrying value of the bare conductor and described
The correction coefficient of bare conductor under various circumstances determines the theoretical temperatures of the bare conductor；
The warning module is used to carry out when the theoretical temperatures of the bare conductor are greater than the maximum permissible temperature of the bare conductor
Early warning.
7. bare conductor Warm status early warning system according to claim 6, which is characterized in that the computing module is by following public affairs
Formula calculates the theoretical temperatures of the bare conductor：
Wherein, θ0For the unloaded operation temperature of the bare conductor, θeFor the bare conductor
Maximum permissible temperature, IFFor the real-time current-carrying value of the bare conductor, IeFor the permission current-carrying value of the bare conductor, K is described naked leads
The correction coefficient of body under various circumstances.
8. bare conductor Warm status early warning system according to claim 6 or 7, which is characterized in that
The acquisition module is also used to acquire the height above sea level of the bare conductor；
The correction coefficient is determined according to the height above sea level of the bare conductor and the real time temperature of environment.
9. bare conductor Warm status early warning system according to claim 6 or 7, which is characterized in that
The heat that the acquisition module is also used to acquire the bare conductor patrols actual temperature；
The computing module be also used to according to the real-time current-carrying value of the bare conductor, working application time, the specific heat capacity of the bare conductor,
The fixing clamper quality of the fixed bare conductor and equipment, heat patrols actual temperature and the theoretical temperatures of the bare conductor determine institute
State the contact resistance value of bare conductor Yu the fixing clamper；
The warning module is also used to carry out when the contact resistance value of the bare conductor and fixing clamper is greater than given threshold pre-
It is alert.
10. bare conductor Warm status early warning system according to claim 9, which is characterized in that the computing module is by following
Formula calculates the contact resistance value of the bare conductor Yu the fixing clamper：
Wherein, IFFor the real-time current-carrying value of the bare conductor, t is the working application time, and C is
The specific heat capacity of the bare conductor, m are the fixing clamper quality, θEActual temperature, θ are patrolled for the heatFFor the reason of the bare conductor
By temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810271524.2A CN108827483B (en) | 2018-03-29 | 2018-03-29 | Bare conductor thermal state early warning method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810271524.2A CN108827483B (en) | 2018-03-29 | 2018-03-29 | Bare conductor thermal state early warning method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108827483A true CN108827483A (en) | 2018-11-16 |
| CN108827483B CN108827483B (en) | 2020-04-14 |
Family
ID=64155308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810271524.2A Active CN108827483B (en) | 2018-03-29 | 2018-03-29 | Bare conductor thermal state early warning method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108827483B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484883A (en) * | 2020-12-01 | 2021-03-12 | 大连理工江苏研究院有限公司 | System and method for evaluating thermal state of contact net and bare conductor of substation |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235226A (en) * | 2013-04-26 | 2013-08-07 | 西安工程大学 | OPPC (optical phase conductor) dynamic capacity increasing on-line monitoring device and monitoring method |
| CN103779059A (en) * | 2013-12-17 | 2014-05-07 | 国网上海市电力公司 | Dynamic capacity increasing method for oil-immersed transformer |
| CN104897993A (en) * | 2015-06-09 | 2015-09-09 | 上海交通大学 | Carrying capacity evaluation method of overhead transmission line |
| CN104977087A (en) * | 2015-07-10 | 2015-10-14 | 江苏省电力公司苏州供电公司 | Method for automatic early warning of power device fault based on infrared imaging and temperature measurement |
| CN104990629A (en) * | 2015-07-10 | 2015-10-21 | 江苏省电力公司苏州供电公司 | Infrared-imaging-and-temperature-measurement-based automatic early warning system for power equipment fault |
| CN106595884A (en) * | 2016-12-07 | 2017-04-26 | 国网内蒙古东部电力有限公司检修分公司 | Method for predicting hot-spot temperature of transformer winding under low temperature |
| CN106650246A (en) * | 2016-12-09 | 2017-05-10 | 国网北京市电力公司 | Method and device for calculating temperature |
| JP6217874B1 (en) * | 2017-02-14 | 2017-10-25 | 日立金属株式会社 | Trolley wire and overhead wire |
-
2018
- 2018-03-29 CN CN201810271524.2A patent/CN108827483B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235226A (en) * | 2013-04-26 | 2013-08-07 | 西安工程大学 | OPPC (optical phase conductor) dynamic capacity increasing on-line monitoring device and monitoring method |
| CN103779059A (en) * | 2013-12-17 | 2014-05-07 | 国网上海市电力公司 | Dynamic capacity increasing method for oil-immersed transformer |
| CN104897993A (en) * | 2015-06-09 | 2015-09-09 | 上海交通大学 | Carrying capacity evaluation method of overhead transmission line |
| CN104977087A (en) * | 2015-07-10 | 2015-10-14 | 江苏省电力公司苏州供电公司 | Method for automatic early warning of power device fault based on infrared imaging and temperature measurement |
| CN104990629A (en) * | 2015-07-10 | 2015-10-21 | 江苏省电力公司苏州供电公司 | Infrared-imaging-and-temperature-measurement-based automatic early warning system for power equipment fault |
| CN106595884A (en) * | 2016-12-07 | 2017-04-26 | 国网内蒙古东部电力有限公司检修分公司 | Method for predicting hot-spot temperature of transformer winding under low temperature |
| CN106650246A (en) * | 2016-12-09 | 2017-05-10 | 国网北京市电力公司 | Method and device for calculating temperature |
| JP6217874B1 (en) * | 2017-02-14 | 2017-10-25 | 日立金属株式会社 | Trolley wire and overhead wire |
Non-Patent Citations (4)
| Title |
|---|
| 何攀: "运行导线接头状态检测方法研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 佚名: "第四章 载流导体的发热、点动力", 《百度文库》 * |
| 袁永毅 等: "影响钢芯铝绞线允许载流量的因素", 《电力安全技术》 * |
| 辛婷玉: "高速铁路接触网关键部件温度场分析", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484883A (en) * | 2020-12-01 | 2021-03-12 | 大连理工江苏研究院有限公司 | System and method for evaluating thermal state of contact net and bare conductor of substation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108827483B (en) | 2020-04-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104378068B (en) | A kind of photovoltaic module array ground insulation impedance detection and circuit | |
| CN108037780B (en) | Oil-immersed transformer cooling control method based on temperature rise and load factor | |
| CN103219727B (en) | Partition power grid structure dynamics method of adjustment based on PMU actual measurement | |
| CN105093047B (en) | Power circuit load monitoring early warning system | |
| CN110363326B (en) | Power grid 110kV line short-term load curve prediction method | |
| CN105203885A (en) | Carrying capacity analysis method based on passive and wireless temperature measurement of ring main unit busbar | |
| CN108827483A (en) | Bare conductor Warm status method for early warning and system | |
| CN112432667A (en) | Intelligent on-line monitoring system for conducting wire state of power transmission line | |
| CN207475699U (en) | Portable transformation patrolling device | |
| CN103399232B (en) | A kind of power transmission line dynamic capacity increase service data acquiring and processing method | |
| CN204730878U (en) | Electrical equipment online supervision device | |
| CN113794857A (en) | Non-intrusive monitoring method and device for switch cabinet and storage medium | |
| CN113675820B (en) | Emergency control method for coping with DC magnetic bias of transformer | |
| CN105676015A (en) | Transmission line carrying capacity calculation method | |
| CN104166883A (en) | Power grid dispatching dynamic capacity increasing evaluation method based on state multi-dimension comprehensive evaluation | |
| CN103808432A (en) | Current induction electricity-taking wireless temperature measurement system with unclosed magnetic circuit, and micro-power-consumption communication method | |
| CN106597211A (en) | Grounding fault locating system of overhead line | |
| CN211121641U (en) | High-voltage passive wireless temperature online monitoring system | |
| CN108921348A (en) | A kind of transmission line of electricity maximum carrying capacity probability density distribution appraisal procedure based on weather prognosis | |
| CN110108983B (en) | Intelligent cable state online measurement and control management method | |
| CN106026166B (en) | Reactive capacity detection method for new energy power station accessed to weak power grid | |
| CN112729607B (en) | Method and system for predicting and monitoring heating temperature of current-carrying element of primary equipment of transformer substation | |
| CN106771490A (en) | A kind of OPGW terminal monitorings system | |
| CN204241402U (en) | The online infrared monitoring device of dry reactor | |
| CN210833874U (en) | Dynamic load thermal infrared temperature measurement system of substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |