CN101403779B - Parameter measuring apparatus and system for high tension power line - Google Patents
Parameter measuring apparatus and system for high tension power line Download PDFInfo
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- CN101403779B CN101403779B CN2008101718733A CN200810171873A CN101403779B CN 101403779 B CN101403779 B CN 101403779B CN 2008101718733 A CN2008101718733 A CN 2008101718733A CN 200810171873 A CN200810171873 A CN 200810171873A CN 101403779 B CN101403779 B CN 101403779B
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Abstract
The invention provides a parameter measuring device of a high-voltage transmission line. The parameter measuring device comprises a safety connection module and testing equipment, wherein, the safety connection module comprises a high-voltage operating rod and a testing line, and the high-voltage operating rod which is connected with the testing line is used for connecting one end of the testing line on a transmission line to be tested; and the other end of the testing line is connected with the testing device. The invention also provides a parameter measuring system of the high-voltage transmission line. By adopting the measuring device of the invention, the security of the parameter measurement of the high-voltage transmission line can be effectively enhanced, the personnel safety of testers during the testing process can be ensured, and the work efficiency of the testing can be improved.
Description
Technical field
The present invention relates to the ultra-high-tension power transmission line field, particularly relate to a kind of ultra-high-tension power transmission line parameter measuring apparatus and system.
Background technology
Before ultra-high-tension power transmission line puts into operation,, need measure the line parameter circuit value of ultra-high-tension power transmission line for the trend of calculating whole network system distributes, sets the corresponding protection definite value for circuit.
The line parameter circuit value of said ultra-high-tension power transmission line mainly comprises: the direct current resistance of transmission line of electricity, positive sequence impedance, zero sequence impedance, positive sequence electric capacity and zero sequence electric capacity etc.
When ultra-high-tension power transmission line is carried out parameter measurement, need will the testing apparatus corresponding to be connected to an end of said tested transmission line of electricity with measured parameter.
In the prior art, the tester generally adopts the manual mode of connection, and the realization testing apparatus is connected with tested transmission line of electricity.At first, the tester climbs up portal frame then with tested transmission line of electricity ground connection, and the p-wire that directly will connect testing apparatus with hand is received on the tested transmission line of electricity, removes ground wire again, begins tested transmission line of electricity is carried out parameter measurement.
But, the mode hazardous of the direct wiring of this craft.Particularly in recent years, the continuous increase of transformer station's quantity, for the better utilization transmission line corridor, overhead transmission line and the parallel circuit of joint using two-circuit even three loops are also more and more.When carrying out the transmission line parameter measurement, if the adjacent lines of tested transmission line of electricity keeps the transmission of electricity state, will produce tested transmission line of electricity and disturb, make the higher line-frequency induction voltage of generation in the said tested transmission line of electricity.When disturbing seriously, said line-frequency induction voltage can reach several ten thousand volts.
Adopt the manual mode of connection, the tester needs direct engaged test line when wiring.When line-frequency induction voltage in the tested transmission line of electricity is low, can produce mild electrical shock to the tester.But, when line-frequency induction voltage is higher, can seriously wound the tester, even cause the tester dead.
In the prior art, also can adopt and wear mode that insulating glove carries out wiring to avoid the direct engaged test line of tester.But the insulating glove of high-voltage connection is generally all thicker, and it is very inconvenient that the tester puts on the insulating glove wiring, is easy to cause wiring not firm, the process and the measuring accuracy of influence test.
Therefore, how solving the safety problem of ultra-high-tension power transmission line parameter measurement, is the eager technical issues that need to address in this area.
Summary of the invention
Technical matters to be solved by this invention provides a kind of ultra-high-tension power transmission line parameter measuring apparatus and system, can effectively strengthen the security of ultra-high-tension power transmission line parameter measurement.
For solving the problems of the technologies described above, the invention provides a kind of ultra-high-tension power transmission line parameter measuring apparatus, said measurement mechanism comprises safe Wiring module and testing apparatus; Wherein,
Said safe Wiring module comprises operation with high pressure bar and p-wire, reaches isolating switch; Said operation with high pressure bar connects said p-wire, is used for an end of said p-wire is connected to tested transmission line of electricity; The said testing apparatus of another termination of said p-wire; The common port of said said p-wire of isolating switch one termination and said testing apparatus, other end ground connection.
Preferably, said operation with high pressure bar comprises insulating bar and high-altitude wiring pincers; Wherein, said high-altitude wiring pincers are arranged on the top of said insulating bar, link to each other with said p-wire.
Preferably, said operation with high pressure bar comprises the said insulating bar of a said insulating bar of joint or at least two joint butt joints.
Preferably, said safe Wiring module also comprises lightning arrester, the common port of said said p-wire of lightning arrester one termination and said testing apparatus, other end ground connection.
Preferably, said safe Wiring module also comprises voltage table, and said voltage table is connected in parallel on the two ends of said lightning arrester.
Preferably, said safe Wiring module also comprises reometer and short circuiting switch; Wherein,
Said reometer series connection is between said isolating switch and ground, and said short circuiting switch is connected in parallel on said reometer two ends.
The present invention also provides a kind of ultra-high-tension power transmission line parameter measurement system, and said measuring system comprises the first safe Wiring module, the second safe Wiring module, testing apparatus and central control unit;
The said first safe Wiring module is identical with the second safe Wiring module structure, includes: operation with high pressure bar and p-wire, and isolating switch; Said operation with high pressure bar connects said p-wire, is used for an end of said p-wire is connected to tested transmission line of electricity; The said testing apparatus of another termination of said p-wire; The common port of said said p-wire of isolating switch one termination and said testing apparatus, other end ground connection;
The said first safe Wiring module connects said tested transmission route survey end and said testing apparatus, and the said second safe Wiring module connects the abutting end of tested transmission line of electricity;
Said central control unit links to each other with the second safe Wiring module with the said first safe Wiring module respectively, is used to control the said first safe Wiring module and the second safe Wiring module carries out parameter measurement to tested transmission line of electricity.
Preferably, said operation with high pressure bar comprises insulating bar and high-altitude wiring pincers; Wherein, said high-altitude wiring pincers are arranged on the top of said insulating bar, link to each other with said p-wire.
Preferably, said operation with high pressure bar comprises the said insulating bar of a said insulating bar of joint or at least two joint butt joints.
Compared with prior art, the present invention has the following advantages:
Adopt ultra-high-tension power transmission line parameter measuring apparatus according to the invention; In test process; The tester only need hand the insulating end of said operation with high pressure bar, operates said operation with high pressure bar, with the tight clamping connection of p-wire that is connected on said high-altitude application bar terminals on said test transmission line of electricity.The other end with said p-wire is connected with said testing apparatus again, can realize being connected of said testing apparatus and tested transmission line of electricity, carries out transmission line parameter and measures.
Compared with prior art; When adopting measurement mechanism according to the invention to carry out the transmission line parameter measurement; Do not need the direct engaged test line of tester; Can guarantee the tester and said tested transmission line of electricity between keep realizing that said tested transmission line of electricity is connected with the tight of said testing apparatus under the situation of enough insulating spaces.Therefore, adopt measurement mechanism according to the invention can effectively strengthen the security of ultra-high-tension power transmission line parameter measurement, guarantee tester's personal safety.
Description of drawings
Fig. 1 is the ultra-high-tension power transmission line parameter measuring apparatus first embodiment structural drawing according to the invention;
Fig. 2 is the ultra-high-tension power transmission line parameter measuring apparatus second embodiment structural drawing according to the invention;
Fig. 3 is ultra-high-tension power transmission line parameter measurement system structural drawing according to the invention;
Fig. 4 carries out the process flow diagram that line parameter circuit value is measured for adopting the said ultra-high-tension power transmission line parameter measuring apparatus of the embodiment of the invention.
Embodiment
For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, below in conjunction with accompanying drawing and embodiment the present invention done further detailed explanation.
Ultra-high-tension power transmission line parameter measuring apparatus according to the invention, said measurement mechanism comprises safe Wiring module and testing apparatus; Wherein, said safe Wiring module comprises operation with high pressure bar and p-wire; Said operation with high pressure bar connects said p-wire, is used for an end of said p-wire is connected to said tested transmission line of electricity; The said testing apparatus of another termination of said p-wire.
Adopt ultra-high-tension power transmission line parameter measuring apparatus according to the invention; In test process; The tester only need hand the insulating end of said operation with high pressure bar, operates said operation with high pressure bar, with the tight clamping connection of p-wire that is connected on said high-altitude application bar terminals on said test transmission line of electricity.The other end with said p-wire is connected with said testing apparatus again, can realize being connected of said testing apparatus and tested transmission line of electricity, carries out transmission line parameter and measures.
With reference to Fig. 1, be the ultra-high-tension power transmission line parameter measuring apparatus first embodiment structural drawing according to the invention.
Said ultra-high-tension power transmission line parameter measuring apparatus comprises: safe Wiring module 1 and testing apparatus 2.Said safe Wiring module 1 is connected with said testing apparatus 2.
Said safe Wiring module 1 comprises operation with high pressure bar 10 and p-wire 11.
Said p-wire 11 is used to connect said tested transmission line of electricity 2 and said testing apparatus 3.The terminals of said operation with high pressure bar 10 are connected with said p-wire 11, are used for said p-wire 11 is connected to said tested transmission line of electricity 2.
Said operation with high pressure bar 10 is made up of insulating bar and high-altitude wiring pincers.Said high-altitude wiring pincers are arranged on the top of said insulating bar, are connected with said p-wire 11.
Said insulating bar can be a joint, also can be formed by at least two joint insulating bar butt joints.The length of said operation with high pressure bar 10 can be according to the electric pressure and the line levels free adjustment of said tested transmission line of electricity 2.
The tester only needs the insulating end of hand-held said operation with high pressure bar 10 in the wiring process, the p-wire 20 that can will be connected said operation with high pressure bar 10 terminals is connected on the said tested transmission line of electricity.Adopt said Wiring module 1, can keep under the situation of enough insulating spaces between tester and the said tested transmission line of electricity 2, the said tested transmission line of electricity 2 of safe and reliable realization is connected with said testing apparatus 3.
When adopting said ultra-high-tension power transmission line parameter measuring apparatus that tested transmission line of electricity 2 is carried out parameter measurement; In order to guarantee tester's personal safety; At first should confirm the length that needs of said operation with high pressure bar 10 according to the electric pressure and the line levels of tested transmission line of electricity 2.With the butt joint of more piece insulating bar, being met needs the operation with high pressure of length bar 10.Said tester controls said high-altitude wiring pincers through the insulating bar of the said operation with high pressure bar 10 of pulling, and the p-wire 11 tight clamping connections that will link to each other with said high-altitude wiring pincers are on said test transmission line of electricity 2.The other end with said p-wire 11 is connected with said testing apparatus 3 again, begins said tested transmission line of electricity 2 is carried out parameter measurement.
Realize docking of said p-wire 11 and said tested transmission line of electricity 2 through said high-altitude wiring pincers, can obtain consistance and reliability with manual direct wiring.
Preferably, said safe Wiring module 1 further comprises lightning arrester 12.Said lightning arrester 12 1 ends link to each other the other end through ground terminal ground connection with the common port of said p-wire 10 and said testing apparatus 3.
Said lightning arrester 12 is used for preventing ultra-high-tension power transmission line parameter measurement process, occurs too high voltages suddenly on the said tested transmission line of electricity 2, and tester and said testing apparatus 3 are damaged.
The rated voltage of said lightning arrester 12 can be carried out corresponding adjusting according to the dielectric level of said testing apparatus 3.
Preferably, said safe Wiring module 1 further comprises isolating switch 13.One end of said isolating switch 13 links to each other with the common port of said p-wire 10 and said testing apparatus 3, and the other end is through ground terminal ground connection.
Said isolating switch 13 is used for cooperating said lightning arrester 12 at test wiring process and test process, guarantees tester's personal safety, and the protection testing apparatus is without prejudice.
When adopting said ultra-high-tension power transmission line parameter measuring apparatus that tested transmission line of electricity 2 is carried out parameter measurement, before being connected to said p-wire 11 on the said tested transmission line of electricity 2 through operation with high pressure bar 10, the closed said isolating switch 13 of elder generation.Through close circuit breaker 13, insert ground wire, guarantee the safety of tester's wiring process.
Because the parameter that ultra-high-tension power transmission line need be measured is a lot, when different parameters is measured, need frequently carry out the operation of reconfiguration line.In the prior art, when carrying out the operation of reconfiguration line, in order to guarantee tester's personal safety, the general method that adopts the line side ground connection cutter hand hay cutter in deciliter transformer station.
When needs carried out the operation of reconfiguration line, the line side ground connection cutter hand hay cutter in the closed transformer station inserted ground wire, makes directly engaged test line of tester, carries out the operation of reconfiguration line.After the reconfiguration line finishes, separate said cutter hand hay cutter again.But deciliter ground connection cutter hand hay cutter action need is through the permission of power scheduling department.When dividing closing operation each time, all need pass through and examine, after formal scheduling was ordered, the operating personnel of transformer station could carry out, and cause test process very loaded down with trivial details, and cause the test duration to prolong greatly.
Measurement mechanism according to the invention is provided with isolating switch 13 between ground wire and p-wire 11.In test process; When needs carry out the operation of reconfiguration line; Closed said isolating switch 13 makes ground wire link to each other with said tested transmission line of electricity 2 through p-wire, and making tested transmission line of electricity 2 is safe with respect to the tester; The tester can directly carry out the operation of reconfiguration line, does not worry taking place Danger Electric shock risk.When reconfiguration line end of operation, only need cut-off breaker 13, just can proceed test job.Adopt said measurement mechanism, can make test process safety, convenient, shortened the test duration greatly.
After wiring finishes, break off said isolating switch 13 again, said lightning arrester 12 is inserted measurement circuit, begin said tested transmission line of electricity 2 is carried out parameter measurement, guarantee the personal safety of said tester in test process through lightning arrester 12 simultaneously.
The concrete implementation structure figure of said ultra-high-tension power transmission line parameter measuring apparatus is as shown in Figure 1.
To the three-phase line of ultra-high-tension power transmission line, said operation with high pressure bar 10 comprises the first operation with high pressure bar 101, the second operation with high pressure bar 102 and the 3rd operation with high pressure bar 103.Said p-wire 11 comprises first p-wire 111, second p-wire 112 and the 3rd p-wire 113.
Accordingly, said lightning arrester 12 comprises first lightning arrester 121, second lightning arrester 122 and the 3rd lightning arrester 123.Said isolating switch 13 comprises first isolating switch 131, second isolating switch 132 and the 3rd isolating switch 133.
Said first p-wire 111 of the high-altitude wiring cramp joint of the said first operation with high pressure bar 101.Another termination of said first p-wire 111 said first lightning arrester 121 1 ends and said first isolating switch 131.The other end of the other end of said first isolating switch 131 and said first lightning arrester 121 is through ground terminal ground connection.The A that said first p-wire 111 and the common port of said first control lever 101 are used to connect said tested transmission line of electricity 2 mutually.The A that said first p-wire 111 and the common port of said first lightning arrester 121 connect said testing apparatus 3 mutually.
Said second p-wire 112 of the high-altitude wiring cramp joint of the said second operation with high pressure bar 102.Another termination of said second p-wire 112 said second lightning arrester 122 1 ends and said second isolating switch 132.The other end of the other end of said second isolating switch 132 and said second lightning arrester 122 is through ground terminal ground connection.The B that said second p-wire 112 and the common port of said second control lever 102 are used to connect said tested transmission line of electricity 2 mutually.The B that said second p-wire 112 and the common port of said second lightning arrester 122 are used to connect said testing apparatus 3 mutually.
Said the 3rd p-wire 113 of the high-altitude wiring cramp joint of said the 3rd operation with high pressure bar 103.Another termination of said the 3rd p-wire 113 said the 3rd lightning arrester 123 1 ends and said the 3rd isolating switch 133.The other end of the other end of said the 3rd isolating switch 133 and said the 3rd lightning arrester 123 is through ground terminal ground connection.The C that said the 3rd p-wire 113 and the common port of said the 3rd control lever 103 are used to connect said tested transmission line of electricity 2 mutually.The C that said the 3rd p-wire 113 and the common port of said the 3rd lightning arrester 123 are used to connect said testing apparatus mutually.
When adopting the said measurement mechanism of first embodiment of the invention to carry out the transmission line parameter measurement; Do not need the directly tested transmission line of electricity of contact of tester; Can guarantee the tester and said tested transmission line of electricity between keep under the situation of enough insulating spaces; Just can realize being connected of said tested transmission line of electricity and said testing apparatus reliably, and can realize that safety accomplishes the various reconfiguration lines operations in the line parameter circuit value test through the present invention.Therefore, adopt measurement mechanism according to the invention can effectively strengthen the security of ultra-high-tension power transmission line parameter measurement, guarantee tester's personal safety.
At present, owing to increasing of transformer station, for the better utilization transmission line corridor, overhead transmission line and the parallel circuit of joint using two-circuit even three loops are also more and more.When carrying out the ultra-high-tension power transmission line parameter measurement, if adjacent lines can not have a power failure simultaneously, the line-frequency induction voltage of transmission line of electricity can produce very big influence to test.To disturbing comparatively serious scene, the electrostatic induction voltage of its transmission line of electricity can reach several ten thousand volts.At this moment, the tester connects instrument and carries out line parameter circuit value when measuring, and the induced voltage of its circuit possibly surpass 1000V, and induction current can be up to 20A, and tester's personal safety and testing apparatus safe in utilization caused great threat.
Danger for fear of the line-frequency induction overtension of transmission line of electricity brings to test process generally all is employed in the test process, will have a power failure with said tested transmission line of electricity 2 contiguous transmission lines of electricity.But in the test process, said tester is difficult to accurately judge the critical number of, lines that need have a power failure simply by virtue of the personal experience.In order to guarantee personal security, can only be with all stopping power supply with said tested transmission line of electricity 2 all contiguous transmission lines of electricity.Like this, though guaranteed tester's personal safety in the test process, but influenced normal power supply greatly.When test process need carry out for a long time, will cause greater loss and influence to supplier of electricity and electricity consumption Fang Jun.
The difference of ultra-high-tension power transmission line parameter measuring apparatus second embodiment according to the invention and first embodiment is that said ultra-high-tension power transmission line parameter measuring apparatus further comprises voltage table and reometer.Through in test process, measure the line-frequency induction voltage and the line-frequency induction electric current of said tested transmission line of electricity 2 in real time, confirm the line-frequency induction voltage of said tested transmission line of electricity 2 and the condition whether the line-frequency induction electric current satisfies said tester's safe operation.As however satisfy; Through progressively stopping the power supply with the contiguous part transmission line of electricity of said tested transmission line of electricity 2; Make the line-frequency induction voltage and the line-frequency induction electric current of said tested transmission line of electricity 2 reduce to the safe operation scope; Both guaranteed tester's personal safety, and can the adjacent lines quantity of stopping power supply have been reduced to minimumly again, and made and reduce to minimum the loss and the influence of supplier of electricity and electricity consumption side.
With reference to Fig. 2, be the ultra-high-tension power transmission line parameter measuring apparatus second embodiment structural drawing according to the invention.
Said ultra-high-tension power transmission line parameter measuring apparatus comprises: safe Wiring module 1 and testing apparatus 2.
Said safe Wiring module 1 comprises operation with high pressure bar 10, p-wire 11, lightning arrester 12, isolating switch 13, also comprises voltage table 14, reometer 15 and short circuiting switch 16.
Said p-wire 11 is used to connect said tested transmission line of electricity 2 and said testing apparatus 3.Said operation with high pressure bar 10 is connected with said p-wire 11, is used for said p-wire 11 is connected to said tested transmission line of electricity 2.
The said p-wire 11 of the high-altitude wiring cramp joint of said operation with high pressure bar 10.Said lightning arrester 12 1 ends of another termination of said p-wire 11 and said isolating switch 13.The positive terminal of the said reometer 15 of another termination of said isolating switch 13, the other end of the negative pole end of said reometer 15 and said lightning arrester 12 is through ground terminal ground connection.Said voltage table 14 is connected in parallel on said lightning arrester 12 two ends.Said short circuiting switch 16 is connected in parallel on the two ends of said reometer 15.
Said voltage table 14; Be used for before the test beginning; Measure the line-frequency induction voltage of said tested transmission line of electricity 2, the line-frequency induction voltage of said tested transmission line of electricity 2 is reached within the safe range, be without prejudice with personal safety and the protection testing apparatus 3 that guarantees tester in the test process.
The general requirement before the test beginning, the line-frequency induction voltage of said tested transmission line of electricity 2 should be greater than 1000V.
When the line-frequency induction voltage of said tested transmission line of electricity 2 surpassed 1000V, common testing apparatus 3 can't be born, and is easy to be compromised, and simultaneously, also is easy to the tester is caused personal injury.At this moment, should reduce the line-frequency induction voltage of said tested transmission line of electricity 2 through suitably stopping the power supply with the contiguous transmission line of electricity of said tested transmission line of electricity 2.If above-mentioned measure still can not make said line-frequency induction voltage reduce to below the 1000V, will stop to carry out transmission line parameter and measure, to guarantee the safety of tester and testing apparatus 3.
Said reometer 15; Be used for before the test beginning; Measure the line-frequency induction electric current of said tested transmission line of electricity 2, the line-frequency induction electric current of said tested transmission line of electricity 2 is reached within the safe range, be without prejudice with personal safety and the protection testing apparatus 3 that guarantees tester in the test process.
The general requirement before the test beginning, the line-frequency induction electric current of said tested transmission line of electricity 2 should be greater than 20A.
When the line-frequency induction electric current of said tested transmission line of electricity 2 surpassed 20A, common testing apparatus 3 can't be born, and is easy to be compromised, and simultaneously, also is easy to the tester is caused personal injury.At this moment, should reduce the line-frequency induction electric current of said tested transmission line of electricity 2 through suitably stopping the power supply with the contiguous transmission line of electricity of said tested transmission line of electricity 2.If above-mentioned measure still can not make said line-frequency induction electric current reduce to below the 20A, will stop to carry out transmission line parameter and measure, to guarantee the safety of tester and testing apparatus 3.
Said short circuiting switch 16 is connected in parallel on said reometer 15 two ends, is used for protective current table 15.When said reometer 15 was in not user mode, said short circuiting switch 16 closures made said reometer 15 shorted on both ends, obstructed excess current in the said reometer 15.
The concrete implementation structure figure of said ultra-high-tension power transmission line parameter measuring apparatus is as shown in Figure 2.
To the three-phase line of ultra-high-tension power transmission line, said operation with high pressure bar 10 comprises the first operation with high pressure bar 101, the second operation with high pressure bar 102 and the 3rd operation with high pressure bar 103.Said p-wire 11 comprises first p-wire 111, second p-wire 112 and the 3rd p-wire 113.
Accordingly, said lightning arrester 12 comprises first lightning arrester 121, second lightning arrester 122 and the 3rd lightning arrester 123.Said isolating switch 13 comprises first isolating switch 131, second isolating switch 132 and the 3rd isolating switch 133.Said voltage table 14 comprises that first voltage table 141, second voltage table 142 and tertiary voltage table 143, said reometer 15 comprise first reometer 151, second reometer 152 and the 3rd reometer 153.Said short circuiting switch 16 comprises first short circuiting switch 161, second short circuiting switch 162 and the 3rd short circuiting switch 163.
Said first p-wire 111 of the high-altitude wiring cramp joint of the said first operation with high pressure bar 101.Another termination of said first p-wire 111 said first lightning arrester 121 1 ends and said first isolating switch 131.The positive terminal of said first reometer 151 of another termination of said first isolating switch 131.The other end of the negative pole end of said first reometer 151 and said first lightning arrester 121 is through ground terminal ground connection.Said first voltage table 141 is connected in parallel on the two ends of said first lightning arrester 121.Said first short circuiting switch 161 is connected in parallel on the two ends of said first reometer 151.The A that said first p-wire 111 and the common port of said first control lever 101 are used to connect said tested transmission line of electricity 2 mutually.The A that said first p-wire 111 and the common port of said first lightning arrester 121 are used to connect said testing apparatus 3 mutually.
Said second p-wire 112 of the high-altitude wiring cramp joint of the said second operation with high pressure bar 102.Another termination of said second p-wire 112 said second lightning arrester 122 1 ends and said second isolating switch 132.The positive terminal of said second reometer 152 of another termination of said second isolating switch 132.The other end of the negative pole end of said second reometer 152 and said second lightning arrester 122 is through ground terminal ground connection.Said second voltage table 142 is connected in parallel on the two ends of said second lightning arrester 122.Said second short circuiting switch 162 is connected in parallel on the two ends of said second reometer 152.The B that said second p-wire 112 and the common port of said second control lever 102 are used to connect said tested transmission line of electricity 2 mutually.The B that said second p-wire 112 and the common port of said second lightning arrester 122 are used to connect said testing apparatus 3 mutually.
Said the 3rd p-wire 113 of the high-altitude wiring cramp joint of said the 3rd operation with high pressure bar 103.One end of said the 3rd lightning arrester 123 of another termination of said the 3rd p-wire 113 and said the 3rd isolating switch 133.The positive terminal of said the 3rd reometer 153 of another termination of said the 3rd isolating switch 133.The other end of the negative pole end of said the 3rd reometer 153 and said the 3rd lightning arrester 123 is through ground terminal ground connection.Said tertiary voltage table 143 is connected in parallel on the two ends of said the 3rd lightning arrester 123.Said the 3rd short circuiting switch 163 is connected in parallel on the two ends of said the 3rd reometer 153.The C that said the 3rd p-wire 113 and the common port of said the 3rd control lever 103 are used to connect said tested transmission line of electricity 2 mutually.The C that said the 3rd p-wire 113 and the common port of said the 3rd lightning arrester 123 are used to connect said testing apparatus mutually.
The present invention also provides a kind of ultra-high-tension power transmission line parameter measurement system.Referring to Fig. 3, be ultra-high-tension power transmission line parameter measurement system structural drawing according to the invention.
Said ultra-high-tension power transmission line parameter measurement system comprises: the first safe Wiring module 1a, the second safe Wiring module 2a, testing apparatus 3 and central control unit 4.
The said first safe Wiring module 1a connects the measuring junction and the said testing apparatus 3 of said tested transmission line of electricity 2, and the said second safe Wiring module 1b connects the abutting end of said tested transmission line of electricity 2;
Said CCU 4 links to each other with the second safe Wiring module 1b with the said first safe Wiring module 1a respectively, is used to control the said first Wiring module 1a and the second Wiring module 1b tested transmission line of electricity 2 is carried out parameter measurement.
The said first safe Wiring module 1a and the second safe Wiring module 1b can be any one safe Wiring module noted earlier.
Referring to Fig. 4, carry out the process flow diagram that line parameter circuit value is measured for adopting the said ultra-high-tension power transmission line parameter measuring apparatus of the embodiment of the invention.
When ultra-high-tension power transmission line was carried out parameter measurement, said tested transmission line of electricity two ends can be respectively defined as measuring junction and abutting end.
Measuring junction at said tested transmission line of electricity is provided with first safe Wiring module and the testing apparatus, through said first security module said testing apparatus is linked to each other with said tested transmission line of electricity.
Abutting end at said tested transmission line of electricity is provided with the second safe Wiring module, is used for the first safe Wiring module of conjunction measuring end, carries out parameter measurement.
The concrete operations step of said test process is described below:
Step 401: before ultra-high-tension power transmission line is tested, said first safe Wiring module and the testing apparatus is set, the said second safe Wiring module is set at the abutting end of tested transmission line of electricity at the measuring junction of tested transmission line of electricity.
Step 402: with the equal ground connection of ground terminal of the said first safe Wiring module and the second safe Wiring module, the short circuiting switch and the isolating switch of the safe Wiring module of closed respectively two covers.
Closed said short circuiting switch is for the protective current table, shorted on both ends when said reometer is not worked, obstructed excess current in the reometer.
Closed said isolating switch is introduced ground wire through ground terminal, tester's personal safety in the protection wiring process.
Step 403: the safe Wiring module that will be arranged on said tested transmission route survey end and abutting end is connected with said tested transmission line of electricity respectively.
Use the operation with high pressure bar of said safe Wiring module,, realize being connected of said safe Wiring module and said tested transmission line of electricity being connected on the tight clamping connection of p-wire on the said operation with high pressure bar on said tested transmission line of electricity.
Step 404: confirming that said tested transmission route survey end all is connected with abutting end finishes.
Step 405: break off the isolating switch of the safe Wiring module of measuring junction, measure the line-frequency induction voltage of tested transmission line of electricity.
Step 406: judge the requirement that whether is above standard of the said line-frequency induction voltage measure, if, get into step 407, if not, get into step 408.
Step 407: carry out corresponding power scheduling operation, return step 406.
When said line-frequency induction voltage is above standard when requiring, carry out the power scheduling operation, suitably stop the power supply with the contiguous transmission line of electricity of said tested transmission line of electricity, reduce the line-frequency induction voltage of said tested transmission line of electricity.Returning step 406, judging whether the line-frequency induction voltage after the scheduling meets the demands.
The standard-required of general said line-frequency induction voltage is 1000V.
Step 408: the isolating switch of the safe Wiring module of closed measuring junction, break off the shorting switch of the safe Wiring module of measuring junction, measure the line-frequency induction electric current of tested transmission line of electricity.
Step 409: judge the requirement that whether is above standard of the said line-frequency induction electric current measure, if, carry out corresponding power scheduling operation, get into step 410, if not, get into step 411.
Step 410: carry out corresponding power scheduling operation, return step 409, judge whether the line-frequency induction electric current after the scheduling meets the demands.
When said line-frequency induction electric current is above standard when requiring, carry out the power scheduling operation, suitably stop the power supply with the contiguous transmission line of electricity of said tested transmission line of electricity, reduce the line-frequency induction electric current of said tested transmission line of electricity.
The standard-required of general said line-frequency induction electric current is 20A.
Step 411: the shorting switch of the safe Wiring module of closed measuring junction, protective current table.
Step 412: said testing apparatus is linked to each other with the safe Wiring module of measuring junction, carry out corresponding test operation.
Generally parameter measurement comprises said tested transmission line of electricity abutting end three-phase short circuit test, tested transmission line of electricity abutting end three-phase short circuit and earthing test, tested transmission line of electricity abutting end three-phase open test etc. to ultra-high-tension power transmission line.
When carrying out said tested transmission line of electricity abutting end three-phase short circuit test, break off the isolating switch of measuring junction.At abutting end, the three-phase line of said abutting end is carried out short circuit respectively through the second safe Wiring module.At measuring junction, through the first safe Wiring module, said testing apparatus is connected with said measuring junction three-phase line, test the positive sequence impedance of said tested transmission line of electricity etc.After measurement finishes, the isolating switch of closed said measuring junction, to guarantee tester's personal safety, the protection testing apparatus is without prejudice.
When carrying out said tested transmission line of electricity abutting end three-phase short circuit and earthing test, break off the isolating switch of measuring junction.At abutting end, the three-phase line of said abutting end is carried out short circuit and ground connection respectively through the second safe Wiring module.At measuring junction, through the first safe Wiring module, said testing apparatus is connected with said measuring junction three-phase line, test the zero sequence impedance of said tested transmission line of electricity etc.After measurement finishes, the isolating switch of closed said measuring junction, to guarantee tester's personal safety, the protection testing apparatus is without prejudice.
When carrying out said tested transmission line of electricity abutting end three-phase open test, break off the isolating switch of measuring junction.The three-phase of said tested transmission line of electricity abutting end is all opened a way.At measuring junction, through the first safe Wiring module, said testing apparatus is connected with said measuring junction three-phase line, test positive sequence impedance, zero sequence electric capacity of said tested transmission line of electricity etc.After measurement finishes, the isolating switch of closed said measuring junction, to guarantee tester's personal safety, the protection testing apparatus is without prejudice.
Step 413: after test finishes, break off being connected of tested transmission route survey end and abutting end and the said first safe Wiring module and the second safe Wiring module respectively.
More than to a kind of ultra-high-tension power transmission line parameter measuring apparatus provided by the present invention and system; Carried out detailed introduction; Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. a ultra-high-tension power transmission line parameter measuring apparatus is characterized in that, said measurement mechanism comprises safe Wiring module and testing apparatus; Wherein,
Said safe Wiring module comprises operation with high pressure bar and p-wire, reaches isolating switch; Said operation with high pressure bar connects said p-wire, is used for an end of said p-wire is connected to tested transmission line of electricity; The said testing apparatus of another termination of said p-wire; The common port of said said p-wire of isolating switch one termination and said testing apparatus, other end ground connection.
2. measurement mechanism according to claim 1 is characterized in that, said operation with high pressure bar comprises insulating bar and high-altitude wiring pincers; Wherein, said high-altitude wiring pincers are arranged on the top of said insulating bar, link to each other with said p-wire.
3. measurement mechanism according to claim 2 is characterized in that, said operation with high pressure bar comprises the said insulating bar of a said insulating bar of joint or at least two joint butt joints;
Said safe Wiring module also comprises lightning arrester, the common port of said said p-wire of lightning arrester one termination and said testing apparatus, other end ground connection.
4. measurement mechanism according to claim 3 is characterized in that, said safe Wiring module also comprises voltage table, and said voltage table is connected in parallel on the two ends of said lightning arrester.
5. measurement mechanism according to claim 4 is characterized in that, said safe Wiring module also comprises reometer and short circuiting switch; Wherein,
Said reometer series connection is between said isolating switch and ground, and said short circuiting switch is connected in parallel on said reometer two ends.
6. a ultra-high-tension power transmission line parameter measurement system is characterized in that, said measuring system comprises the first safe Wiring module, the second safe Wiring module, testing apparatus and central control unit;
The said first safe Wiring module is identical with the second safe Wiring module structure, includes: operation with high pressure bar and p-wire, and isolating switch; Said operation with high pressure bar connects said p-wire, is used for an end of said p-wire is connected to tested transmission line of electricity; The said testing apparatus of another termination of said p-wire; The common port of said said p-wire of isolating switch one termination and said testing apparatus, other end ground connection;
The said first safe Wiring module connects said tested transmission route survey end and said testing apparatus, and the said second safe Wiring module connects the abutting end of tested transmission line of electricity;
Said central control unit links to each other with the second safe Wiring module with the said first safe Wiring module respectively, is used to control the said first safe Wiring module and the second safe Wiring module carries out parameter measurement to tested transmission line of electricity.
7. measuring system according to claim 6 is characterized in that, said operation with high pressure bar comprises insulating bar and high-altitude wiring pincers; Wherein, said high-altitude wiring pincers are arranged on the top of said insulating bar, link to each other with said p-wire.
8. measuring system according to claim 7 is characterized in that, said operation with high pressure bar comprises the said insulating bar of a said insulating bar of joint or at least two joint butt joints.
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| CN2008101718733A CN101403779B (en) | 2008-11-12 | 2008-11-12 | Parameter measuring apparatus and system for high tension power line |
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| CN103308796A (en) * | 2013-05-23 | 2013-09-18 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | System capable of guaranteeing parameter test work safety of ac/dc (alternating current/direct current) transmission line |
| CN104459271A (en) * | 2013-09-20 | 2015-03-25 | 天津中电华利电器科技集团有限公司 | Molded-case voltage detection device |
| CN104459529B (en) * | 2014-12-21 | 2017-06-16 | 国家电网公司 | The double loop method of testing of transformer station's mechanical characteristic of high-voltage circuit breaker experiment |
| CN106501558A (en) * | 2016-09-22 | 2017-03-15 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of safe mode of connection during electric power transmission line parameter testing |
| CN109272203A (en) * | 2018-08-24 | 2019-01-25 | 国网天津市电力公司电力科学研究院 | A kind of transmission line parameter test auxiliary system |
| CN109342784A (en) * | 2018-12-05 | 2019-02-15 | 国网河北省电力有限公司电力科学研究院 | Transmission line of electricity tests termination and mode of connection |
| CN110456158A (en) * | 2019-09-16 | 2019-11-15 | 国网河南省电力公司平顶山供电公司 | A kind of method for preventing induced electricity from hurting sb.'s feelings when measurement circuit power frequency parameter |
| CN111521847A (en) * | 2020-05-20 | 2020-08-11 | 国家电网有限公司 | Lightning arrester direct current test wiring converter |
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| CN201327509Y (en) * | 2008-12-19 | 2009-10-14 | 河南电力试验研究院 | High-voltage transmission line parameter measuring device and system thereof |
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