CN205263221U - Super high tension transmission line shaft tower lightning shielding ability analogue test platform - Google Patents
Super high tension transmission line shaft tower lightning shielding ability analogue test platform Download PDFInfo
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- CN205263221U CN205263221U CN201521130550.1U CN201521130550U CN205263221U CN 205263221 U CN205263221 U CN 205263221U CN 201521130550 U CN201521130550 U CN 201521130550U CN 205263221 U CN205263221 U CN 205263221U
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Abstract
The utility model discloses a super high tension transmission line shaft tower lightning shielding ability analogue test platform, including electrode, screened room and high -speed photography appearance, still including the pressure regulating circuit that connects gradually, simulation transmission line wire beam circuit to and the transmission line model, just test platform passes through ground connection iron plate ground connection. Test the influence factor of assay transmission line shaft tower lightning shielding ability on this test platform, makes the curves of each influence factor and shaft tower lightning shielding ability, combine analysis result to be directed against transmission line and take more suitable lightning protection measure. Utilize the experimental phenomenon of high -speed photography appearance record, the result is accurate to the lightning protection measure of economical rationality more in the actual engineering of providing.
Description
Technical field
The utility model belongs to high voltage field, is specifically related to a kind of extra high voltage network shaft tower lightning shielding ability mouldIntend test platform.
Background technology
China coast area lightening activity is frequent, and 500kV power transmission line corridor is many through mountain area, and tripping rate with lightning strike is very high.Operational monitoring data show, because the lightning stroke trip that thunderbolt transmission line of electricity produces occupies very large ratio. 220kV power transmission lineRoad is because the lightning stroke trip that shielding causes accounts for 60% left and right of total number of accident amount, higher in 500kV transmission line of electricity ratio, Russia,The U.S., the lightning protection experience of 735 ~ 765kV transmission line of electricity of the countries such as Canada also shows, shielding is the most main in lightning stroke trip accidentThe reason of wanting.
To the correlative study of thunderbolt, the electric aggregation model EGM of extensive use at present, how much of the improvement of ErikssonModel, guide's propagation model LPM etc., are engineering calculating methods. Along with the electric pressure of transmission line of electricity is more and more higher, each row is eachIndustry is more and more higher for the requirement of power supply, and the correlation theory drawing under original historical conditions is caught in the application of Practical ProjectThe flap is shown in elbow. Along with the construction of UHV transmission line, make the research of the lightning shielding ability to transmission line of electricity shielding, to electrical networkSecurity reliability have important meaning. Although not being proper physical analogy, the thunder discharge of simulated test naturally putsElectricity, but there is certain similitude in the rule of electric discharge, can repeat in a large number, is convenient to change experimental condition, can beShort time draws the rule and characteristic of some lightning shielding abilities. The electric power line pole tower simulation examination of carrying out both at home and abroadTesting, is all to adopt naked-eye observation thunderbolt electricity, and accuracy has larger error.
Utility model content
The utility model mainly solves the lightning protection for the lightning shielding factors influencing on ability of extra high voltage network shaft towerDesign can only be with reference to engineering calculating method, and error is larger, can not meet the need of super-pressure and UHV transmission line protection completelyAsk, and electric power line pole tower simulated test in thunderbolt research, adopting naked-eye observation thunderbolt electricity, accuracy has larger errorProblem.
The technical solution adopted in the utility model is: a kind of extra high voltage network shaft tower lightning shielding ability simulated testPlatform, comprises electrode, screened room and high-speed camera, also comprises the regulating circuit connecting successively, mimic transmission line line conductor noteCurrent circuit, and model of power transmission system, and described test platform is by ground connection iron plate ground connection.
Preferably, described regulating circuit comprises the isolating transformer, pressure regulator and the step-up transformer that connect successively.
Preferably, described mimic transmission line line conductor beam circuit comprises the silicon stack connecting successively, current-limiting protection resistance, heightPress filter capacitor, two switches and current-limiting resistance.
Preferably, described model of power transmission system comprises the Tower Model, transmission pressure model and the lightning conducter mould that connect successivelyType.
Preferably, the lightning conducter of described lightning conducter model adopts the naked iron wire of 1mm, and the power transmission line of described transmission pressure model is adoptedUse 2mm copper wire, described lightning conducter is installed on diverse location, and quantity changeable.
Preferably, described Tower Model adopts ZB6T type shaft tower.
Preferably, described high-speed camera is placed in described screened room.
Preferably, described model of power transmission system contracting is than being 1:40.
Preferably, described electrode adopts length 70cm, and the steel of diameter 10mm are made, and end is that drift angle is the circular cone of 30 °.
Be more preferably, the high-voltage connection of impulse voltage generator is connected on described electrode, and described electrode is by insulationRope is fixed on diverse location.
The utility model has mainly been built the test of a research extra high voltage network lightning shielding factors influencing on abilityPlatform, tests to analyze the influence factor to electric power line pole tower lightning shielding ability by this test platform, thus pinSuper-pressure and UHV transmission line shaft tower are taked to more suitable lightning protection measures.
The utility model is the scale model by producing extra high voltage network, and this scale model is carried out reasonablyArrange, in the situation that not changing other conditions, scale model is applied to lightning wave and operation wave impact voltage, change by continuingThe position of variable electrode, the position of lightning conducter and the radical of lightning conducter, the whether charged variable that waits of transmission line of electricity, observes respectively different emptyBetween thunderbolt point shielding wire probability, specify the impact of these factors for power transmission line lightning shielding screening ability, finally transmitted electricityThe relation curve of circuit lightning shielding ability and each factor.
Operation principle: build isolating transformer, regulating circuit and the silicon stack of pressure regulator and step-up transformer composition, current limliting is protectedProtect resistance, high-voltage filtering capacitor, two switches, the mimic transmission line line conductor beam circuit of current-limiting resistance composition, and shaft towerModel, the analogue test platform that the transmission line of electricity scale model of transmission pressure model and lightning conducter model composition forms, passes throughRationally adjust electrode position, lightning conducter position and quantity, and two switches are studied locus, shielding angle, lightning conducter numberAmount and transmission line of electricity current potential are for the impact of shaft tower lightning shielding ability.
The beneficial effects of the utility model are: by testing at this test platform, obtain extra high voltage network barTower respectively under operation ripple and lightning wave effect, electric power line pole tower lightning shielding ability and space thunderbolt point, shielding angle, defeatedThe relation curve of the factors such as the whether charged and lightning conducter radical of electric line, utilizes high-speed camera to record experimental phenomena, result standardReally, thus provide in Practical Project rational more economically lightning protection measures. The complete Reality simulation transmission line of electricity of this test platformWith thunderbolt environment, reduce the impact of other factors, and can conveniently change the parameters such as analog conducting wire, lightning conducter; Can rationally adjustWhole electrode pair transmission line of electricity and distance to the ground, thus make the ratio that in result of the test, transmission line of electricity is struck by lightning have significant change; CanWith Scaling voltage, and freely cut circuit, the operating condition of test of the different voltages of transmission line simulation band.
Brief description of the drawings
Fig. 1 is the utility model overall framework schematic diagram;
Wherein, 1-isolating transformer, 2-pressure regulator, 3-step-up transformer, 4-silicon stack, 5-current-limiting protection resistance, 6-high pressureFilter capacitor, 7-ground connection iron plate, 8-switch, 9-Tower Model, 10-electrode, 11-wire, 12-lightning conducter, 13-switch, 14-limitLeakage resistance, 15-high-speed camera, 16-screened room;
Fig. 2 (a) and (b) are the trial curve of the different thunderbolt point shielding in electric power line pole tower model space position probability;
Fig. 3 (a) and (b) are the trial curve of electric power line pole tower model protection angle to space thunderbolt point shielding probability;
Fig. 4 is the trial curve of transmission line of electricity lightning conducter quantity for space thunderbolt point shielding probability.
Detailed description of the invention
Can further understand by reference to the accompanying drawings feature of the present utility model and advantage by following detailed description. ProvideEmbodiment is only the explanation to the utility model method, and limits never in any form all the other contents that the utility model discloses.
Embodiment 1
As shown in Figure 1, the technical scheme that the present embodiment adopts is as follows: a kind of extra high voltage network shaft tower lightning shielding energyPower analogue test platform, comprises electrode 10, screened room 16 and high-speed camera 15, also comprises the regulating circuit and the mould that connect successivelyIntend transmission line wire beam circuit, and model of power transmission system, and described test platform is by ground connection iron plate ground connection 7.
Described regulating circuit comprises the isolating transformer 1, pressure regulator 2 and the step-up transformer 3 that connect successively.
Described mimic transmission line line conductor beam circuit comprises the silicon stack 4 connecting successively, current-limiting protection resistance 5, high press filtrationRipple electric capacity 6, switch 8, switch 13 and current-limiting resistance 14.
Described transmission line of electricity scale model comprises the Tower Model 9, transmission pressure model 11 and the lightning conducter mould that connect successivelyType 12.
The lightning conducter of described lightning conducter model 12 adopts the naked iron wire of 1mm, and the power transmission line of described transmission pressure model 11 adopts2mm copper wire, described lightning conducter is installed on diverse location, and quantity changeable.
Described Tower Model 9 adopts ZB6T type shaft tower.
Described high-speed camera 15 is placed in described screened room 16.
Described transmission line of electricity contracting is than being 1:40.
Described electrode 10 adopts length 70cm, and the steel of diameter 10mm are made, and end is that drift angle is the circular cone of 30 °.
The high-voltage connection of impulse voltage generator is connected on described electrode 10, and described electrode 10 is fixed on by insulating cordDiverse location.
The present embodiment is produced the scale model of 500kV transmission line of electricity, in order to make analog reslt representative,Contracting is than being 1:40, and shaft tower turriform is ZB6T type shaft tower. Electrode 10 adopts length 70cm, and the steel of diameter 10mm are made, and end isDrift angle is the circular cone of 30 °, and the position of electrode can arbitrarily be moved.
Every battery of tests, the position of electrode is fixed, and the high-voltage connection of impulse voltage generator is connected on electrode, utilizes absolutelyEdge rope fixedly secures electrode.
In model of power transmission system, lightning conducter 12 adopts the naked iron wire of 1mm, and wire 11 adopts 2mm copper wire, the installation of lightning conducter 12Position can regulate, and quantity can increase and decrease. Whole test platform carries out ground connection by ground connection iron plate 7. When test, profitThe observation and the record that carry out experimental phenomena with high-speed camera 15, high-speed camera 15 is placed in screened room 16, prevents from being putThe electromagnetic interference influence of electricity.
By experiment porch is reasonably arranged, in the situation that not changing other conditions, model is applied to thunder and lightningRipple and operation wave impact voltage, by continuing to change the position of electrode 10, the position of lightning conducter 12, whether transmission line of electricity is charged,The variablees such as the radical of lightning conducter 12, observe respectively different spaces thunderbolt point shielding wire probability, specify these factors for transmission of electricityThe impact of circuit model lightning shielding ability, finally obtains the song that is related to of model of power transmission system lightning shielding ability and each factorLine.
The test of the different thunderbolt point shielding in embodiment 2 electric power line pole tower model space positions probability:
Can be divided into five to six groups, open switch 8, Closing Switch 13, adjusts respectively suitable electrode 10 in every group of experimentPosition forms contrast. Utilize impulse voltage generator gap to be applied to 90% ~ 100% discharge voltage, respectively 10 of simulation electrodePut under asynchronous operating mode and discharge 50 times, recording electrode discharges over the ground, and what lightning conducter 12 was discharged and transmission line of electricity is discharged is inferiorNumber, calculates the ratio of each operating mode bottom electrode 10 to transmission line of electricity electric discharge, thereby runs a curve, as shown in Fig. 2 (a) and (b).
Embodiment 3 tests of electric power line pole tower model protection angle to space thunderbolt point shielding probability:
The position of fixed electrode 10, is divided into five to six groups, opens switch 8, and Closing Switch 13 is adjusted respectively in every group of testThe position of suitable lightning conducter 12 forms contrast. Utilize impulse voltage generator gap to be applied to 90% ~ 100% discharge voltage,Simulate respectively under the lightning conducter 12 asynchronous operating modes in position and discharge 50 times, recording electrode discharges over the ground, to lightning conducter 12 electric discharge andTo the number of times of transmission line of electricity electric discharge, calculate the ratio of each operating mode bottom electrode to transmission line of electricity electric discharge, thereby run a curve, as figure3(a), shown in (b).
The whether charged test for space thunderbolt point shielding probability of embodiment 4 transmission lines of electricity:
The position of fixing lightning conducter 12, is divided into two groups, and each group is carried out the discharge test of five to six locus, closureSwitch 8, opens switch 13, by pressure regulator align transmission line of electricity with voltage, carry out the test of two groups of different electric pressures.In every battery of tests, adjust respectively the position of suitable electrode 10, under the asynchronous operating mode in simulation electrode position, discharge 50 times respectively,Recording electrode 10 discharges over the ground, and lightning conducter 12 is discharged and number of times to transmission line of electricity, calculates each operating mode bottom electrode 10 to defeatedThe ratio of electric line electric discharge, thus run a curve, as shown in Figure 4.
Embodiment 5 transmission line of electricity lightning conducter quantity are for the test of space thunderbolt point shielding probability:
Fixing lightning conducter 12 positions, transmission line of electricity is not charged, increases by one group of lightning conducter, can be divided into five to six groups, opensSwitch 8, Closing Switch 13, adjusts respectively the position of suitable electrode 10 in every group of test, utilizes between impulse voltage generator pairGap applies 90% ~ 100% discharge voltage, under the simulation electrode 10 asynchronous operating modes in position, discharges 50 times respectively, and recording electrode 10Electric discharge over the ground, to lightning conducter 12 and the number of times to transmission line of electricity electric discharge, calculates each operating mode bottom electrode to transmission line of electricity electric dischargeRatio, thus run a curve.
Table 1 is the parameters of thunderbolt directly over three lightning conducters, shielding angle-5 °, transmission line of electricity
From table 1, three lightning conducters are remarkable for phase conductor shielding probability effect in reducing. Even if at transmission pressureApply in the so extreme situation of reversed polarity crest voltage, the shielding properties of three lightning conducters is also extremely good, and it certainlyBe better than two lightning conducters, only whether suggestion adopts three lightning conducters also to need to consider its necessity and economy at this point. ButBe set up three lightning conducters for reduce counterattack trip-out rate should be helpful.
The complete Reality simulation transmission line of electricity of above-described embodiment and thunderbolt environment, reduce the impact of other factors, and can be squareJust change the parameters such as analog conducting wire, lightning conducter; Can rationally adjust electrode pair transmission line of electricity and distance to the ground, thereby make test knotThe ratio that in fruit, transmission line of electricity is struck by lightning has significant change; Can Scaling voltage, and freely cut circuit, mimic transmission lineThe operating condition of test of the different voltages of road band.
Claims (10)
1. an extra high voltage network shaft tower lightning shielding ability analogue test platform, is characterized in that: comprise electrode, shieldingChamber and high-speed camera, also comprise the regulating circuit connecting successively, mimic transmission line line conductor beam circuit, and transmission line of electricityModel, and described test platform is by ground connection iron plate ground connection.
2. extra high voltage network shaft tower lightning shielding ability analogue test platform according to claim 1, its feature existsIn: described regulating circuit comprises the isolating transformer, pressure regulator and the step-up transformer that connect successively.
3. extra high voltage network shaft tower lightning shielding ability analogue test platform according to claim 1, its feature existsIn: described mimic transmission line line conductor beam circuit comprises the silicon stack connecting successively, current-limiting protection resistance, high-voltage filtering capacitor,Two switches and current-limiting resistance.
4. extra high voltage network shaft tower lightning shielding ability analogue test platform according to claim 1, its feature existsIn: described model of power transmission system comprises the Tower Model, transmission pressure model and the lightning conducter model that connect successively.
5. extra high voltage network shaft tower lightning shielding ability analogue test platform according to claim 4, its feature existsIn: the lightning conducter of described lightning conducter model adopts the naked iron wire of 1mm, and the power transmission line of described transmission pressure model adopts 2mm copper wire, instituteState lightning conducter and be installed on diverse location, and quantity changeable.
6. extra high voltage network shaft tower lightning shielding ability analogue test platform according to claim 4, its feature existsIn: described Tower Model adopts ZB6T type shaft tower.
7. extra high voltage network shaft tower lightning shielding ability analogue test platform according to claim 1, its feature existsIn: described high-speed camera is placed in described screened room.
8. extra high voltage network shaft tower lightning shielding ability analogue test platform according to claim 1, its feature existsIn: described model of power transmission system contracting is than being 1:40.
9. extra high voltage network shaft tower lightning shielding ability analogue test platform according to claim 1, its feature existsIn: described electrode adopts length 70cm, and the steel of diameter 10mm are made, and end is that drift angle is the circular cone of 30 °.
10. extra high voltage network shaft tower lightning shielding ability analogue test platform according to claim 1, its feature existsIn: the high-voltage connection of impulse voltage generator is connected on described electrode, and described electrode is fixed on diverse location by insulating cord.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521130550.1U CN205263221U (en) | 2015-12-30 | 2015-12-30 | Super high tension transmission line shaft tower lightning shielding ability analogue test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521130550.1U CN205263221U (en) | 2015-12-30 | 2015-12-30 | Super high tension transmission line shaft tower lightning shielding ability analogue test platform |
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| CN205263221U true CN205263221U (en) | 2016-05-25 |
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| CN201521130550.1U Expired - Fee Related CN205263221U (en) | 2015-12-30 | 2015-12-30 | Super high tension transmission line shaft tower lightning shielding ability analogue test platform |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643478A (en) * | 2017-11-10 | 2018-01-30 | 广东电网有限责任公司电力科学研究院 | One kind draws Reatta scale model lightning test system |
| CN108761292A (en) * | 2018-07-25 | 2018-11-06 | 贵州电网有限责任公司 | One kind being used for transmission line wire lightning current ablation characteristics test system |
| CN110488165A (en) * | 2019-08-29 | 2019-11-22 | 南方电网科学研究院有限责任公司 | A kind of lightning discharge comprehensive analysis method, device, terminal device and storage medium |
| CN111337796A (en) * | 2018-12-19 | 2020-06-26 | 武汉大学 | Power transmission line lightning shielding failure model test platform and method considering mountain terrain |
-
2015
- 2015-12-30 CN CN201521130550.1U patent/CN205263221U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643478A (en) * | 2017-11-10 | 2018-01-30 | 广东电网有限责任公司电力科学研究院 | One kind draws Reatta scale model lightning test system |
| CN107643478B (en) * | 2017-11-10 | 2023-05-09 | 广东电网有限责任公司电力科学研究院 | Lightning stroke test system of lightning stroke tower shrinkage model |
| CN108761292A (en) * | 2018-07-25 | 2018-11-06 | 贵州电网有限责任公司 | One kind being used for transmission line wire lightning current ablation characteristics test system |
| CN111337796A (en) * | 2018-12-19 | 2020-06-26 | 武汉大学 | Power transmission line lightning shielding failure model test platform and method considering mountain terrain |
| CN110488165A (en) * | 2019-08-29 | 2019-11-22 | 南方电网科学研究院有限责任公司 | A kind of lightning discharge comprehensive analysis method, device, terminal device and storage medium |
| CN110488165B (en) * | 2019-08-29 | 2021-11-30 | 南方电网科学研究院有限责任公司 | Lightning stroke discharge comprehensive analysis method and device, terminal equipment and storage medium |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20161230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |