CN203164295U - Apparatus for measuring input impedance and resonant frequency of power transmission line iron tower - Google Patents
Apparatus for measuring input impedance and resonant frequency of power transmission line iron tower Download PDFInfo
- Publication number
- CN203164295U CN203164295U CN 201320083323 CN201320083323U CN203164295U CN 203164295 U CN203164295 U CN 203164295U CN 201320083323 CN201320083323 CN 201320083323 CN 201320083323 U CN201320083323 U CN 201320083323U CN 203164295 U CN203164295 U CN 203164295U
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- iron tower
- transmission line
- power transmission
- model
- input impedance
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Abstract
Provided by the utility model is an apparatus for measuring the input impedance and resonant frequency of a power transmission line iron tower. The apparatus comprises a tester; one end of the tester is connected with any tower leg of the power transmission line iron tower and the other end thereof is grounded; and a ground wire of the power transmission line iron tower is disconnected. According to the utility model, the measuring apparatus is common equipment and can be obtained easily. The measurement has the high accuracy; parameters can be provided for establishment of an accurate passive interference calculating model; a calculating model regulated by a related national standard can be replaced; and an accurate passive interference protection distance can be obtained.
Description
Technical field
The utility model relates to field of power, is specifically related to a kind of for the device of measuring iron tower of power transmission line input impedance and resonance frequency.
Background technology
Radio direction finding (RDF) be measure the radio electromagnetsm ripple come to.Because the radio electromagnetsm ripple press earth orthodrome (straight line) direction and is propagated, so electromagnetic to the residing direction of this radiation source just.When position finding station and iron tower of power transmission line vicinity, the radio incoming wave can produce induction electromotive force at iron tower, electromotive force can produce induction current again in this metallic conductor, induction current equally also can produce radiation field again around it, the direction estimation antenna array that the main electromagnetic field of it and incoming wave works together to position finding station (station) lists, influence the accuracy of direction finding, increase and show to the degree error.
For fear of transmission line of electricity position finding station is exerted an influence, stipulated in the national standard that transmission line of electricity and position finding station minimum allow near distance, i.e. protection distance.In the protection distance of standard code calculates, be the vertical antenna of a ground connection with the iron tower of power transmission line equivalence, the radiation characteristic of iron tower of power transmission line differs bigger with the radiation characteristic of vertical grounded antenna, is mainly reflected in: the radiation efficiency of (1) iron tower is far below vertical antenna; (2) resonance frequency of iron tower and vertical antenna are inconsistent.
For accurately calculating again radiation field, showing to spending error and iron tower of power transmission line to the protection distance of position finding station, need obtain radiation characteristics such as iron tower input impedance and resonance frequency, to set up computation model.
The utility model content
At the deficiencies in the prior art, it is a kind of for the device of measuring iron tower of power transmission line input impedance and resonance frequency that the utility model provides, accurately measure the impedance operator of iron tower of power transmission line, and can judge resonance frequency, measurement result has repeatability, can provide parameter for setting up passive interference calculation model.
What the utility model provided is a kind of for the device of measuring iron tower of power transmission line input impedance and resonance frequency, and its improvements are that described device comprises tester; Described tester one end connects other end ground connection at any one tower leg of described iron tower of power transmission line; The ground wire of described iron tower of power transmission line disconnects.
Wherein, described tester comprises vector network analyzer.Vector network analyzer itself carries a signal generator, can carry out frequency sweeping to a frequency range, when an end connects tower leg, other end ground connection, after the operate as normal, be equivalent to iron tower is applied pumping signal, amplitude and the phase place of the signal that reflects by measurement just can draw the resistance value of iron tower.
Wherein, described vector network analyzer is AnritsuE5062A type vector network analyzer.
Compared with the prior art, the beneficial effects of the utility model are:
Measurement mechanism of the present utility model is common device, is easy to obtain.
The utility model measurement has higher accuracy, can passive interference calculation model provide parameter in order to set up accurately, and this model can replace the computation model stipulated in the concerned countries standard, to obtain passive interference prevention distance more accurately.
Description of drawings
The device synoptic diagram that is used for measuring iron tower of power transmission line input impedance and resonance frequency that Fig. 1 provides for the utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
It is a kind of for the device of measuring iron tower of power transmission line input impedance and resonance frequency that the utility model provides, its synoptic diagram as shown in Figure 1, this device comprises tester; Described tester one end connects other end ground connection at any one tower leg of described iron tower of power transmission line; The ground wire of 4 tower legs of described iron tower of power transmission line disconnects, and makes iron tower be in the insulation against ground state.。
Described vector network analyzer is AnritsuE5062A type vector network analyzer.Vector network analyzer itself carries a signal generator, can carry out frequency sweeping to a frequency range, when an end connects tower leg, other end ground connection, after the operate as normal, be equivalent to iron tower is applied pumping signal, amplitude and the phase place of the signal that reflects by measurement just can draw the resistance value of iron tower.
Vector network analyzer is exported one group of data, comprises real part, imaginary part, opens the mould value that root is obtained input impedance again according to the quadratic sum of real part, imaginary part, and wherein imaginary part is the resonance frequency that 0 frequency is iron tower.
More than measure, each tower leg is all done, the arithmetic mean value that finally obtains 4 tower leg measurement results is the input impedance of this iron tower.
Should be noted that at last: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although with reference to above-described embodiment the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement embodiment of the present utility model, and do not break away from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (3)
1. a device that is used for measuring iron tower of power transmission line input impedance and resonance frequency is characterized in that described device comprises tester; Described tester one end connects other end ground connection at any one tower leg of described iron tower of power transmission line; The ground wire of described iron tower of power transmission line disconnects.
2. device as claimed in claim 1 is characterized in that, described tester comprises vector network analyzer.
3. device as claimed in claim 2 is characterized in that, described vector network analyzer is AnritsuE5062A type vector network analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320083323 CN203164295U (en) | 2013-02-25 | 2013-02-25 | Apparatus for measuring input impedance and resonant frequency of power transmission line iron tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320083323 CN203164295U (en) | 2013-02-25 | 2013-02-25 | Apparatus for measuring input impedance and resonant frequency of power transmission line iron tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203164295U true CN203164295U (en) | 2013-08-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320083323 Expired - Lifetime CN203164295U (en) | 2013-02-25 | 2013-02-25 | Apparatus for measuring input impedance and resonant frequency of power transmission line iron tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203164295U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614595A (en) * | 2015-02-12 | 2015-05-13 | 哈尔滨工业大学 | Noncontact testing method for inherent frequency and quality factor of resonance coil |
| GB2550606A (en) * | 2016-05-25 | 2017-11-29 | Exact Projects Ltd | Apparatus for and a method of detecting leakage of current |
| CN107884640A (en) * | 2017-10-23 | 2018-04-06 | 中国电力科学研究院有限公司 | It is a kind of to be used to test the horizontal vector network system of transmission line of electricity sourceless seism |
-
2013
- 2013-02-25 CN CN 201320083323 patent/CN203164295U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614595A (en) * | 2015-02-12 | 2015-05-13 | 哈尔滨工业大学 | Noncontact testing method for inherent frequency and quality factor of resonance coil |
| GB2550606A (en) * | 2016-05-25 | 2017-11-29 | Exact Projects Ltd | Apparatus for and a method of detecting leakage of current |
| WO2017203205A1 (en) * | 2016-05-25 | 2017-11-30 | Exact Projects Limited | Apparatus for and a method of detecting leakage of current |
| GB2550606B (en) * | 2016-05-25 | 2019-10-16 | Exact Projects Ltd | Apparatus for and a method of detecting leakage of current |
| CN107884640A (en) * | 2017-10-23 | 2018-04-06 | 中国电力科学研究院有限公司 | It is a kind of to be used to test the horizontal vector network system of transmission line of electricity sourceless seism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |