CN202522221U - Device for measuring vertical span of power transmission line - Google Patents
Device for measuring vertical span of power transmission line Download PDFInfo
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- CN202522221U CN202522221U CN2012202003585U CN201220200358U CN202522221U CN 202522221 U CN202522221 U CN 202522221U CN 2012202003585 U CN2012202003585 U CN 2012202003585U CN 201220200358 U CN201220200358 U CN 201220200358U CN 202522221 U CN202522221 U CN 202522221U
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Abstract
The utility model discloses a device for measuring the vertical span of a power transmission line, comprising a weather detecting function module, a line video monitoring function module, an insulator-string tension detecting function module and an insulator-string angle detecting function module which are respectively and electrically connected with a data processing function module, wherein the data processing function module is electrically connected with a data output function module which realizes the output of results of the data processing function module to an ice real-time monitoring system and is electrically connected with the ice real-time monitoring system. The device disclosed by the utility model has the advantage that the problems that in the process of actual operation of the power transmission line, as the ice real-time monitoring system adopts the theoretical vertical span in the line design as an input value for monitoring, the ice real-time monitoring system of the power transmission line is influenced by environment to cause large error and low accuracy and the like are solved.
Description
Technical field
The utility model belongs to powerline ice-covering monitoring and warning technical field, relates in particular to a kind of vertical span measurement mechanism of transmission line of electricity.
Background technology
China's weather environment vast in territory is changeable; It is one of more country of powerline ice-covering in the world; At the beginning of 2008 and 2011 2 times big ice and snow hazard weathers cause serious circuit icing, tripping operation, broken string, fall accident such as tower, bring heavy losses for national economy and industrial or agricultural, people's lives electricity consumption.The main cause of inferior ice and snow disaster be for many years one meet on a large scale, long-time low temperature sleet frost climate, but reflect that also China's electrical network resists the scarce capacity of bad weather condition, lack the means of grasping circuit icing situation in the very first time.
The monitoring of past to the powerline ice-covering situation mainly is to lean on circuit operations staff's field observation measurement to realize; In recent years the real-time Study of Monitoring of powerline ice-covering has been obtained certain progress; Through real-time monitoring to icing; Take measures in early stage, prevent that the generation of accident and expansion from being fully possible.Through development research and engineering practice for many years, the equivalent ice covering thickness monitoring system of transmission line of electricity becomes better and approaching perfection day by day, and its monitoring accuracy can reach about 2mm.But the monitoring accuracy of system still has the space and the possibility of raising.In tension method icing monitoring system; Be through the loads change in the vertical span being drawn last equivalent ice covering thickness value, wherein vertical span is as an important technical parameter of icing real-time monitoring system, and its accuracy can directly have influence on monitoring accuracy; Be the numerical value of the design load of the vertical span through line design the time at present as monitoring system to obtaining of vertical span; But in the transmission line of electricity actual moving process, vertical span is not unalterable, but along with the variation of surrounding environment changes; This receives the such environmental effects error big with regard to the monitoring accuracy that has caused the ice covering thickness monitoring system, and precision is low.
Summary of the invention
The technical matters that the utility model will solve: a kind of transmission line of electricity vertical span measurement mechanism is provided; To solve in the transmission line of electricity actual moving process; Theoretical vertical span when the powerline ice-covering real-time monitoring system adopts line design is monitored as input value; Cause powerline ice-covering real-time monitoring system error affected by environment big, problem such as precision is low.
The utility model technical scheme:
A kind of transmission line of electricity vertical span measurement mechanism; It comprises meteorological measuring ability module, circuit video monitoring function module, insulator chain pulling force measuring ability module and insulator chain angular detection functional module; It all is electrically connected with the data processing function module; The data processing function module is electrically connected with data output function module, and data output function module is electrically connected with the icing real-time monitoring system.
Insulator chain pulling force measuring ability module is equipped with pulling force sensor, and it is installed between the wire insulation substring, is connected with data processing function module lead.
Insulator chain angular detection functional module is equipped with the two dimension angular sensor, and it is installed on the wire insulation substring, is connected with data processing function module lead.
The data processing function module comprises the stressed processing sub-function module in lead hanging point place; Its with vertical span in vertical gross load handle sub-function module and be electrically connected, vertical gross load is handled sub-function module and is electrically connected with vertical span calculating sub-function module in the vertical span.
The utility model beneficial effect:
The utility model is through the on-the-spot weather data of the real-time detection line of meteorological measuring ability module; The pulling force and the angle that detect insulator chain through insulator chain pulling force measuring ability module and insulator chain angular detection functional module are equivalent; These detected value Real-time and Dynamic are delivered to the data processing function module; The data processing function module is installed on computers, through writing data processor in advance and solidifying on computers, through the correlation values and the combined circuit basic parameter of real-time detection; Automatically calculate the vertical span and the equivalent ice covering thickness of circuit through the data processing function module; And coherent detection all is to carry out automatically therefore can realizing automatic time and the kinetic measurement to the circuit vertical span with handling, and the utility model utilizes insulator chain pulling force and the inclination data in the non-icing phase to come the vertical span of circuit is carried out dynamic calculation, thereby guarantees that the vertical span parameter before icing begins meets on-the-spot situation; Finally reach the purpose that improves equivalent ice covering thickness monitoring accuracy; Its monitoring accuracy can reach about 1mm, has solved in the transmission line of electricity actual moving process, and the theoretical vertical span when the powerline ice-covering real-time monitoring system adopts line design is monitored as input value; Cause powerline ice-covering real-time monitoring system error affected by environment big, problem such as precision is low.
Description of drawings:
Fig. 1 is the utility model functional module composition diagram;
Fig. 2 is the sub-function module composition frame chart of the utility model data processing function module.
Embodiment:
A kind of transmission line of electricity vertical span measurement mechanism, it comprises (see figure 1):
Meteorological measuring ability module; The on-the-spot meteorologic parameter of detection line; Be connected through underground optical fiber with the data processing function module; The weather monitoring functional module is formed by being installed in the on-the-spot small-sized meteorological work station of circuit, and near the meteorologic parameter that detection line is is delivered to the data processing function module in real time like numerical value such as air humidity, temperature, wind speed and with numerical value.
Circuit video monitoring function module; Sleet situation on the Monitoring Line; Be connected through optical fiber with the data processing function module, circuit video monitoring function module mainly is made up of the on-the-spot numerous video frequency pick-up head of circuit, and all video informations are transmitted through the fiber to the data processing function module.
Insulator chain pulling force measuring ability module; Detect the pulling force of wire insulation substring; The detection means of insulator chain pulling force measuring ability module adopts pulling force sensor, is installed between the wire insulation substring, with data processing function module employing lead or through wireless connections.
Insulator chain angular detection functional module; Detect wire insulation substring windage yaw angle and angle of inclination; The detection means of insulator chain angular detection functional module adopts the two dimension angular sensor, is installed on the wire insulation substring, adopts lead or wireless connections with the data processing function module.
The data processing function module according to pulling force, windage yaw angle and the angle of inclination of essential parameter of circuit, on-the-spot meteorologic parameter, insulator chain, is carried out data processing, is connected through common netting twine or optical fiber with data output function module; Essential parameter of circuit is a preset parameter, by manual work typing in advance storage, when carrying out data processing, obtains related data information automatically.
Data output function module exports the result of data processing function module to the icing real-time monitoring system, is connected through optical fiber or common netting twine with the icing real-time monitoring system.
The data processing function module comprises:
The stressed processing sub-function module in lead hanging point place; According to initial conditions such as the detected value of thrust of insulator chain pulling force measuring ability module, the detected insulator chain windage yaw of insulator chain angular detection functional module angle, angle of inclination value and essential parameter of circuit; Draw lead hanging point place insulator chain axial tension; Handling sub-function module with vertical gross load in the vertical span is connected through the data call function
Lead hanging point place stressed processing sub-function module program thread is:
Because measured insulator chain pulling force is a trivector, therefore at first must convert this value on the line direction value of thrust, the power that the folk prescription of keeping watch makes progress is removed.
Computing formula is:
Wherein F is the axial tensile force at measured insulator chain hanging point place, and φ is the insulator chain angle of wind deflection.
Because the F in the following formula
0Next the pulling force that receives for insulator chain hanging point place so should be converted to the suffered power of lead hanging point place insulator chain with it.Suppose at first that at this suspension insulator is a directly rod of the equally distributed rigid body of a load.
G?i?*?sinθ?* λ/2?=?T`?*?sinθ1?* λ
F0?* =?Gi?*?cos?θ?+?T?*?cosθ1
In the following formula, Gi is the insulator chain deadweight, and θ is the insulator chain pitch angle, and θ 1 is the angle of the line direction between lead hanging point place insulator chain axial tension and the insulator chain, and λ is an insulator chain length, and T is a lead hanging point place insulator chain axial tension.
Can obtain after separating above-mentioned equation:
Vertical gross load is handled sub-function module in the vertical span; According to insulator chain angle of inclination value and lead hanging point place insulator chain axial tension value is initial conditions; Draw vertical gross load in the vertical span; Calculate sub-function module with vertical span and call through data function and be connected, its program thread is:
W
N?=?T * COS(θ+θ1) （4）
W in the formula
NBe vertical total load (TL) in the vertical span
Vertical span calculates sub-function module, according to vertical gross load in essential parameter of circuit and the vertical span, draws vertical span numerical value, and its program thread is:
Lv is a vertical span in the formula, W
NdBe the ice load of unit length in the vertical span on the solid conductor, n is the lead division number, w
0Be the lead unit weight.Schilling W
Nd=0 also vertical span L
VAs unknown number, calculate the vertical span value according to formula (5) then.
The data processing function module is solidified on computers through programming according to above-mentioned formula; Automatically draw the vertical span value through on-the-spot weather data of automatic reception and detection data etc., because therefore the real-time measure and transmit of field data can realize the automatic measurement to vertical span.
Data output function module; Export the kinetic measurement value of the vertical span of data processing function module to the icing real-time monitoring system; Be connected through optical fiber or common netting twine with the icing real-time monitoring system; The icing real-time monitoring system carries out equivalent icing through vertical span kinetic measurement value and calculates, and realizes the accuracy requirement of monitoring in real time of circuit icing.
Measuring condition:
The circuit icing can not appear in known present operating mode line; The foundation of judging is that meteorological condition that the scene records can not make and produces icing on the circuit; Such as; Environment temperature is greater than 3 degrees centigrade, and this condition has continued (in order to get rid of icing of short duration environment temperature rise situation later on) more than 24 hours; The judgement of this condition is through system weather data to be added up automatically to realize;
After definite present circuit is non-icing operating mode; Again the detected insulator chain axial tension of present on-the-spot detection means and pitch angle, angle of wind deflection are handled; The data processing function module is got 10 groups of data in 2 hours automatically; Calculate in the vertical span vertical total load (TL) and do the curve match according to formula (4), the data processing function module is got its maximal value automatically as the vertical comprehensive load in the vertical span; Schilling W
Nd=0 also vertical span L
VAs unknown number, calculate the dynamic vertical span according to formula (5) then.
Claims (4)
1. transmission line of electricity vertical span measurement mechanism; It is characterized in that: it comprises meteorological measuring ability module, circuit video monitoring function module, insulator chain pulling force measuring ability module and insulator chain angular detection functional module; It all is electrically connected with the data processing function module; The data processing function module is electrically connected with data output function module, and data output function module is electrically connected with the icing real-time monitoring system.
2. a kind of transmission line of electricity vertical span measurement mechanism according to claim 1 is characterized in that: insulator chain pulling force measuring ability module is equipped with pulling force sensor, and it is installed between the wire insulation substring, is connected with data processing function module lead.
3. a kind of transmission line of electricity vertical span measurement mechanism according to claim 1, it is characterized in that: insulator chain angular detection functional module is equipped with the two dimension angular sensor, and it is installed on the wire insulation substring, is connected with data processing function module lead.
4. a kind of transmission line of electricity vertical span measurement mechanism according to claim 1; It is characterized in that: the data processing function module comprises the stressed processing sub-function module in lead hanging point place; Its with vertical span in vertical gross load handle sub-function module and be electrically connected, vertical gross load is handled sub-function module and is electrically connected with vertical span calculating sub-function module in the vertical span.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202003585U CN202522221U (en) | 2012-05-07 | 2012-05-07 | Device for measuring vertical span of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202003585U CN202522221U (en) | 2012-05-07 | 2012-05-07 | Device for measuring vertical span of power transmission line |
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| Publication Number | Publication Date |
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| CN202522221U true CN202522221U (en) | 2012-11-07 |
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| CN2012202003585U Expired - Fee Related CN202522221U (en) | 2012-05-07 | 2012-05-07 | Device for measuring vertical span of power transmission line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113112757A (en) * | 2021-03-15 | 2021-07-13 | 南方电网科学研究院有限责任公司 | Ground wire specific load change quantity measuring method, system, device and storage medium |
-
2012
- 2012-05-07 CN CN2012202003585U patent/CN202522221U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113112757A (en) * | 2021-03-15 | 2021-07-13 | 南方电网科学研究院有限责任公司 | Ground wire specific load change quantity measuring method, system, device and storage medium |
| CN113112757B (en) * | 2021-03-15 | 2022-12-06 | 南方电网科学研究院有限责任公司 | Ground wire specific load change quantity measuring method, system, device and storage medium |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20150507 |
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| EXPY | Termination of patent right or utility model |