CN109470955A - A kind of power transmission line transient current-carrying capacity monitoring device - Google Patents
A kind of power transmission line transient current-carrying capacity monitoring device Download PDFInfo
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- CN109470955A CN109470955A CN201811336795.8A CN201811336795A CN109470955A CN 109470955 A CN109470955 A CN 109470955A CN 201811336795 A CN201811336795 A CN 201811336795A CN 109470955 A CN109470955 A CN 109470955A
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- transmission line
- power transmission
- carrying capacity
- data collection
- collection station
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Abstract
The present invention relates to a kind of power transmission line transient current-carrying capacity monitoring devices, belong to technical field of power systems.A kind of power transmission line transient current-carrying capacity monitoring device, comprising: the first data collection station, the second data collection station and monitoring backstage.Wherein, the first data collection station is arranged on the shaft tower of power transmission line, including the first acquisition unit, first control unit, the first transmission unit；Second data collection station is arranged on power transmission line, including defeated second acquisition unit, second are according to control unit, the second transmission unit；It is responsible for the reception of monitoring data, analyzes and calculate route maximum carrying capacity and longest safety time two indices in monitoring backstage.Route maximum carrying capacity can explicitly inform that dispatcher's route also great current-carrying capability, i.e. route under current remaining clearing time of fault can also pass through great electric current.Longest safety time can clearly inform dispatcher's route under the fault current, line conductor temperature rise to maximum allowable running temperature there are also how long, i.e., troubleshooting there are also how long.The two indexs can assist dispatcher to select most safe most economical Failure elimination mode within the shortest time.
Description
Technical field
The present invention relates to a kind of power transmission line transient current-carrying capacity monitoring devices, belong to technical field of power systems.
Background technique
As Chinese national economy high speed development and power grid construction grow continuously and fast, power grid scale increases year by year, power grid
Density is gradually increased, and power transmission line corridor is in gesture increasingly in short supply.Existing line corridor resource is played to greatest extent, improves line
The conveying capacity on road is not only to improve the needs of the level of resources utilization, and builds the inevitable requirement of strong smart grid.
Dynamic current-carrying capacity calculates under the conditions of steady-state heat balance that route is practical to be allowed through load at present, since conducting wire is from stature
The influence of material, temperature rise reach steady-state heat balance and need a period of time.In conventional design, load selects the theory of sectional area to go out
Hair point is that 30 minutes conducting wires reach stable temperature rise, and the heating time constant τ of large and medium-sized sectional area conducting wire is mostly at 10 ~ 15 points
Clock.Therefore, in order to make full use of the transmittability of transmission line of electricity, the transient state of route must be taken into consideration in failure short-term load (duty)
Operation problem, i.e., the transient state current-carrying capacity size of route under consideration fault condition.
Improve transmission line of electricity temporary capability of overload in case of a fault, on the one hand according to the conductor temperature acquired in real time,
Temperature, wind speed, wind direction, light radiation intensity and conducting wire relevant parameter are giving constant current by the prediction of conducting wire transient state equation of heat balance
Under, the foundation as route overload operation in short-term: on the other hand the temperature rise after determining certain time length calculates current weather condition
Under, determine that given duration inside conductor temperature is no more than the road-load flow of max line for allowing running temperature and to constant current lower wire temperature
Degree is no more than the safe duration of maximum for allowing running temperature, provides safety operation foundation for traffic control.
Find there is not the dress being monitored to transmission line of electricity transient state current-carrying capacity also in the prior art through retrieving to the prior art
It sets, and transient state current-carrying capacity is to make often important index under fault condition, it can indicate that dispatcher takes in the shortest time
Most safe most economical mode eliminates failure, if cannot clearly know that the transient state current-carrying capacity of route this may result in troubleshooting
It is improper, glitch is evolved into major break down, carries out causing a wide range of power outages accident, significant impact is caused to national product life.
Summary of the invention
The present invention In view of the above shortcomings of the prior art, provides a kind of power transmission line transient current-carrying capacity monitoring dress
It sets, can effectively realize the transient current-carrying capacity monitoring of high voltage transmission line.
The invention is characterized in that following technical solution is realized:
The present invention includes the first data collection station, the second data collection station and monitoring backstage.
First data collection station is arranged on the shaft tower of power transmission line comprising: the first acquisition unit, the first control
Unit, the first transmission unit；Wherein, first acquisition unit completes the acquisition to environment temperature, wind speed and wind direction；It is described
First control unit controls the normal operation of first data collection station, provides stabilized power supply, the storage of control data, control
First transmission unit completes data communication；First transmission unit sends monitoring backstage for the data of acquisition by it.
Second data collection station is arranged on power transmission line comprising: the second acquisition unit, the second control unit,
Second transmission unit；Wherein, second acquisition unit completes the acquisition to the temperature, power transmission line load current of power transmission line；Institute
The second control unit is stated to control the normal operation of second data collection station, stabilized power supply, the storage of control data, control are provided
It makes the second transmission unit and completes data communication；Second transmission unit sends monitoring backstage for the data of acquisition by it.
When the monitoring backstage is responsible for the reception of monitoring data, analyzes and calculate route maximum carrying capacity and safe longest
Between two indices.
First acquisition unit, including the temperature-measuring module and wind speed and direction measurement module being arranged independently of each other, institute
It states temperature-measuring module and the wind speed and direction measurement module passes sequentially through analog switch, isolation protective circuit and the first analog/digital
Converter is connect with the first control unit；Wherein the temperature-measuring module and the wind speed and direction are surveyed dizzy module and are used respectively
In acquisition environment temperature, wind speed and wind direction；The isolation protective circuit, the interference extraneous for isolation, the isolation of analog signal；
First A/D converter is used to the collected signal of above-mentioned module being converted into digital signal；The transmission of electricity specific electric load electricity
Flow measurement circuitry includes the current in wire measurement module and powerline signal conditioning circuit to intercouple；The line temperature is surveyed
Measuring circuit includes two temp probes；The power transmission line load current measuring circuit and the line temperature measuring circuit pass through
Second A/D converter is connect with the second control unit.
The first control unit, including the first main control singlechip and coupled with first main control singlechip first
Power management module, reservoir module and clock module；Wherein first main control singlechip controls the first data acquisition eventually
The only Chang Yunhang at end；First power management module guarantees it for providing stable power supply to the first data collection station
It operates normally；The reservoir module is used for temporal data packet serial number, temporal information, battery information, climatic information；The clock
Module makes the first data collection station be based on the pulsed operation for providing a clock pulses；The second master control monolithic
Machine controls the normal operation of second data collection station；The second source management module, for being acquired to the second data
Terminal provides stable power supply, guarantees its normal operation；The reservoir module is used for temporal data packet serial number, temporal information, electricity
Pond information, conductor temperature and line current information；The clock module adopts the second data for providing a clock pulses
Collect terminal and is based on the pulsed operation.
First power management module, comprising intercouple solar panel square matrix, the first power-supply controller of electric,
Two power-supply controller of electric, battery group；Wherein first power-supply controller of electric, for exporting electricity to the solar panel square matrix
Pressure is controlled and is deployed；The second source controller is electric by the stable DC that DC conversion is required voltage；The storage
Battery pack includes the battery group to intercouple and battery group control unit；The battery group control unit is used for each
Individual battery is controlled, and the battery group control unit has two kinds of operating modes of self-management and external control.
Second acquisition unit, including the power transmission line load current measurement module being arranged independently of each other and line temperature
Measurement module: wherein the power transmission line load current measurement module includes current in wire measurement module, the power transmission line that mutual misfortune is closed
Signal tune circuit；The line temperature measurement module includes two temp probes；The power transmission line load current measurement module
And the line temperature measurement module is connect by the second A/D converter with the second control unit；The wherein power transmission line
Temperature surveys most module and the power transmission line load current surveys most module and is respectively used to acquisition conductor temperature, line current；The tune
Circuit is managed, respectively to conductor temperature and line current analog signal is filtered and insulation blocking；Which A/D converter
For the collected signal from analog signal of above-mentioned module to be converted into digital signal.
Second control unit includes the second main control singlechip and the second electricity closed with second main control singlechip misfortune
Source control module, reservoir module and clock module；Wherein second main control singlechip controls second data collection station
Normal operation；The second source management module guarantees its normal operation for providing stable power supply to this device；
The reservoir module is used for temporal data packet serial number, temporal information, battery information, current in wire temperature information；The clock mould
Block is used for one clock pulses of a few offers, and the terminal is made to be based on the pulsed operation.
The second source management module include intercouple the power transmission line electricity taking coil of connection, second source controller and
Battery group parallel with one another；The wherein power transmission line electricity taking coil, by what is obtained from power transmission line by incuding way to take power
AC energy is converted to direct current；The second source controller is electric by the stable DC that DC conversion is required voltage；Institute
Stating battery group includes the battery group to intercouple and battery group control unit: the battery group control unit for pair
Each individually battery is controlled, and the battery group control unit has two kinds of Working moulds of self-management and external control
Formula.
First transmission unit is connect by serial ports with the first control unit；Second control unit passes through string
Mouth is connect with the power transmission line control unit.First data collection station and second data collection station pass through GPS
It sets time, guarantees the consistency of clock.
The ambient temperature measurement module and conductor temperature probe are selected can low suppling voltage and output voltage and measurement temperature
The sensor of the linear relationship of degree ratio；The wind speed and direction measurement module selects three cup type inductors；The current in wire
Measurement module uses Rogowski coil.
The present invention passes through each sensor for installing this monitoring in the line, then passes through wireless communication module for each survey
Amount parameter passes monitoring backstage back, in the transient state current-carrying capacity of monitoring hind computation current line, and clearly provides route maximum current-carrying
Amount and longest safety time two indices.
Route maximum carrying capacity can explicitly inform dispatcher's route under current remaining clearing time of fault also
There is great current-carrying capability, i.e. the route can also pass through great electric current.Longest safety time can clearly inform that dispatcher should
Route is under the fault current, and also how long line conductor temperature rises to maximum allowable running temperature, i.e. troubleshooting
Also how long.The two indexs can assist dispatcher to select most safe most economical Failure elimination within the shortest time
Mode.
Detailed description of the invention
Fig. 1 is a kind of power transmission line transient current-carrying capacity monitoring device overall structure figure of the present invention.
Fig. 2 is a kind of the first acquisition terminal of power transmission line transient current-carrying capacity monitoring device module map of the present invention.
Fig. 3 is a kind of the second acquisition terminal of power transmission line transient current-carrying capacity monitoring device module map of the present invention.
Specific embodiment
It is further detailed to a kind of power transmission line transient current-carrying capacity monitoring device work of the present invention with reference to the accompanying drawing
It describes in detail bright.
As shown in Figure 1, the present invention includes the first data collection station, the second data collection station and monitoring backstage.
First data collection station is arranged on the shaft tower of power transmission line comprising: the first acquisition unit, the first control
Unit, the first transmission unit；Wherein, first acquisition unit completes the acquisition to environment temperature, wind speed and wind direction；It is described
First control unit controls the normal operation of first data collection station, provides stabilized power supply, the storage of control data, control
First transmission unit completes data communication；First transmission unit sends monitoring backstage for the data of acquisition by it.
Second data collection station is arranged on power transmission line comprising: the second acquisition unit, the second control unit,
Second transmission unit；Wherein, second acquisition unit completes the acquisition to the temperature, power transmission line load current of power transmission line；Institute
The second control unit is stated to control the normal operation of second data collection station, stabilized power supply, the storage of control data, control are provided
It makes the second transmission unit and completes data communication；Second transmission unit sends monitoring backstage for the data of acquisition by it.
When the monitoring backstage is responsible for the reception of monitoring data, analyzes and calculate route maximum carrying capacity and safe longest
Between two indices.
As shown in Fig. 2, the first acquisition unit includes the temperature-measuring module being arranged independently of each other and wind speed and direction measurement mould
Block, the temperature-measuring module and the wind speed and direction measurement module pass sequentially through analog switch, isolation protective circuit and first
A/D converter is connect with the first control unit；Wherein the temperature-measuring module and the wind speed and direction survey dizzy module
It is respectively used to acquisition environment temperature, wind speed and wind direction；The isolation protective circuit, isolation, the isolation for analog signal are extraneous
Interference；First A/D converter is used to the collected signal of above-mentioned module being converted into digital signal；The power transmission line
Load current measuring circuit includes the current in wire measurement module and powerline signal conditioning circuit to intercouple；The power transmission line
Temperature measuring circuit includes two temp probes；The power transmission line load current measuring circuit and line temperature measurement electricity
Road is connect by the second A/D converter with the second control unit.
The first control unit, including the first main control singlechip and coupled with first main control singlechip first
Power management module, reservoir module and clock module；Wherein first main control singlechip controls the first data acquisition eventually
The only Chang Yunhang at end；First power management module guarantees it for providing stable power supply to the first data collection station
It operates normally；The reservoir module is used for temporal data packet serial number, temporal information, battery information, climatic information；The clock
Module makes the first data collection station be based on the pulsed operation for providing a clock pulses；The second master control monolithic
Machine controls the normal operation of second data collection station；The second source management module, for being acquired to the second data
Terminal provides stable power supply, guarantees its normal operation；The reservoir module is used for temporal data packet serial number, temporal information, electricity
Pond information, conductor temperature and line current information；The clock module adopts the second data for providing a clock pulses
Collect terminal and is based on the pulsed operation.
First power management module, comprising intercouple solar panel square matrix, the first power-supply controller of electric,
Two power-supply controller of electric, battery group；Wherein first power-supply controller of electric, for exporting electricity to the solar panel square matrix
Pressure is controlled and is deployed；The second source controller is electric by the stable DC that DC conversion is required voltage；The storage
Battery pack includes the battery group to intercouple and battery group control unit；The battery group control unit is used for each
Individual battery is controlled, and the battery group control unit has two kinds of operating modes of self-management and external control.
As shown in figure 3, the second acquisition unit includes the power transmission line load current measurement module being arranged independently of each other and transmission of electricity
Line temperature-measuring module: wherein the power transmission line load current measurement module include mutual misfortune close current in wire measurement module,
Powerline signal tune circuit；The line temperature measurement module includes two temp probes；The power transmission line load current is surveyed
Amount module and the line temperature measurement module are connect by the second A/D converter with the second control unit；It is wherein described
Line temperature surveys most module and the power transmission line load current surveys most module and is respectively used to acquisition conductor temperature, line current；
The conditioning circuit, respectively to conductor temperature and line current analog signal is filtered and insulation blocking；Which analog/digital
Converter is used to the collected signal from analog signal of above-mentioned module being converted into digital signal.
Second control unit includes the second main control singlechip and the second electricity closed with second main control singlechip misfortune
Source control module, reservoir module and clock module；Wherein second main control singlechip controls second data collection station
Normal operation；The second source management module guarantees its normal operation for providing stable power supply to this device；
The reservoir module is used for temporal data packet serial number, temporal information, battery information, current in wire temperature information；The clock mould
Block is used for one clock pulses of a few offers, and the terminal is made to be based on the pulsed operation.
The second source management module include intercouple the power transmission line electricity taking coil of connection, second source controller and
Battery group parallel with one another；The wherein power transmission line electricity taking coil, by what is obtained from power transmission line by incuding way to take power
AC energy is converted to direct current；The second source controller is electric by the stable DC that DC conversion is required voltage；Institute
Stating battery group includes the battery group to intercouple and battery group control unit: the battery group control unit for pair
Each individually battery is controlled, and the battery group control unit has two kinds of Working moulds of self-management and external control
Formula.
First transmission unit is connect by serial ports with the first control unit；Second control unit passes through string
Mouth is connect with the power transmission line control unit.
First data collection station is set time with second data collection station by GPS, guarantees clock
Consistency.
The ambient temperature measurement module and conductor temperature probe are selected can low suppling voltage and output voltage and measurement temperature
The sensor of the linear relationship of degree ratio；The wind speed and direction measurement module selects three cup type inductors；The current in wire
Measurement module uses Rogowski coil.
In conclusion the present apparatus for dispatching of power netwoks personnel process circuit failure provide specific route maximum carrying capacity and
Safety time, energy coordinated scheduling personnel select most safe, most economical Failure elimination mode in the shortest time.
Claims (6)
1. a kind of power transmission line transient current-carrying capacity monitoring device characterized by comprising the first data collection station, second
Data collection station and monitoring backstage.
2. the first data collection station according to claim 1 characterized by comprising the first acquisition unit, the first control
Unit processed, the first transmission unit.
3. the second data collection station according to claim 1 characterized by comprising the second acquisition unit, the second control
Unit processed, the second transmission unit.
4. monitoring backstage according to claim 1, which is characterized in that be responsible for the reception of monitoring data, analyze and calculate
Route maximum carrying capacity and longest safety time two indices.
5. power transmission line transient current-carrying capacity monitoring device according to claim 1, which is characterized in that first acquisition
Unit includes the temperature-measuring module being arranged independently of each other and wind speed and direction measurement module, the temperature-measuring module and the wind
Fast wind direction measurement module passes sequentially through analog switch, isolation protective circuit and the first A/D converter and first control is single
Member connection.
6. power transmission line transient current-carrying capacity monitoring device according to claim 1, which is characterized in that first transmission
Unit is connect by serial ports with the first control unit；Second control unit passes through serial ports and the transmission of electricity line traffic control list
Member connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336795.8A CN109470955A (en) | 2018-11-12 | 2018-11-12 | A kind of power transmission line transient current-carrying capacity monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336795.8A CN109470955A (en) | 2018-11-12 | 2018-11-12 | A kind of power transmission line transient current-carrying capacity monitoring device |
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| CN109470955A true CN109470955A (en) | 2019-03-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462202A (en) * | 2021-01-26 | 2021-03-09 | 湖北鑫英泰系统技术股份有限公司 | Power grid load early warning method and system based on high-voltage passive temperature measurement |
-
2018
- 2018-11-12 CN CN201811336795.8A patent/CN109470955A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462202A (en) * | 2021-01-26 | 2021-03-09 | 湖北鑫英泰系统技术股份有限公司 | Power grid load early warning method and system based on high-voltage passive temperature measurement |
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Application publication date: 20190315 |