CN201965178U - Parameter tester for pilot frequency line - Google Patents

Parameter tester for pilot frequency line Download PDF

Info

Publication number
CN201965178U
CN201965178U CN201020687669XU CN201020687669U CN201965178U CN 201965178 U CN201965178 U CN 201965178U CN 201020687669X U CN201020687669X U CN 201020687669XU CN 201020687669 U CN201020687669 U CN 201020687669U CN 201965178 U CN201965178 U CN 201965178U
Authority
CN
China
Prior art keywords
tester
circuit
transformer
power supply
measurement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201020687669XU
Other languages
Chinese (zh)
Inventor
付友君
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHANGSHA JINYI ELECTRONIC TECHNOLOGY Co Ltd
Original Assignee
CHANGSHA JINYI ELECTRONIC TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHANGSHA JINYI ELECTRONIC TECHNOLOGY Co Ltd filed Critical CHANGSHA JINYI ELECTRONIC TECHNOLOGY Co Ltd
Priority to CN201020687669XU priority Critical patent/CN201965178U/en
Application granted granted Critical
Publication of CN201965178U publication Critical patent/CN201965178U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

A parameter tester for a pilot frequency line comprises a three-phase transformer, a three-phase inversion power supply, an interference bypass circuit, a six-channel sampling control measuring circuit, a current transformer, a voltage transformer, a control panel, an output equipment and the like. In addition, a variable frequency power supply module is adopted as an output power supply for measurement of the tester, the frequency can be changed into 45Hz or 55 Hz, and various on-site working frequency interference signals can be effectively avoided by digital filtering technology so that the tester can realize high-precision, accurate and reliable measurement, the calculation processing capacity can be improved on the premise of ensuring the precise measured data by adopting a fast DSP (digital signal processor) as a processing core, thus improving the reaction and processing speed of the tester. Due to the adoption of an integrated structure, the volume and weight of the tester can be greatly reduced, the tester has a compact structure, accuracy in measurement and convenience in operation; therefore, the test workload can be remarkably reduced, the working efficiency can be improved, and great convenience is provided for on-site testing.

Description

Alien frequencies line parameter circuit value tester
Technical field
The utility model relates to the ultra-high-tension power transmission line field, is specially a kind of alien frequencies line parameter circuit value tester that is applicable to the ultra-high-tension power transmission line power frequency parameter test.
Background technology
High-tension overhead line is because be in complicated electromagnetic field work condition environment, particularly when two transmission line of electricity parallel lines on same tower, article one, charged circuit may induce the induced voltage of volts up to ten thousand on another circuit, will realize that in this case the accurate measurement of line parameter circuit value just must be adopted brand-new method of testing and means.At present, measure the ultra-high-tension power transmission line power frequency parameter on the engineering and mainly use big current method (20A-50A), purpose is to think to allow as much as possible induced interference signal be unlikely to have influence on the added signal of test.But need to use powerful transformer, pressure regulator like this, isolating transformer by discrete measurement instruments such as reometer, voltage table, power meters, is respectively shown scale and is tried to achieve each parameter value through after the corresponding computing by reading.When circuit was longer, the power supply that produces a 20-50A needed the experiment power supply of 50KW-100KW, need like this weight tonne equipment more than at least three.The volume and weight of surveying instrument is very huge, and the connection complexity of each instrument cubicle needs artificial reading and deal with data, need change when measuring different parameters to measure wiring and instrument wiring, and testing experiment is loaded down with trivial details.
CPU, analog quantity are handled, AD changes, the digital frequency conversion line parameter circuit value parameter tester of display device in a kind of novel comprising, these test functions have been optimized, if power supply signal is connect filtering circuit through the IPM module, output with filtering circuit connects load by output sampling and controlling unit behind transformer again, output sampling simultaneously and controlling unit also connect the signal input part of CPU by analog quantity processing and AD modular converter, the shows signal output termination display device of CPU just can realize certain test function.
Yet during the power frequency parameter of routine measurement ultra-high-tension power transmission line, the test that exists for that power frequency is disturbed has brought very big trouble.Along with the development of electrical network and the anxiety of circuit corridor land used, the situation of setting up for many times with bar is more and more general, coupling between the transmission line of electricity is more and more tightr, disturbs more and more byer force when transmission line power frequency parameter test, has a strong impact on the accuracy of test and the security of testing tool equipment.
The utility model content
The technical matters that the utility model solved is to provide a kind of alien frequencies line parameter circuit value tester, to solve the shortcoming in the above-mentioned background technology.
The technical matters that the utility model solved realizes by the following technical solutions:
Alien frequencies line parameter circuit value tester comprises three-phase transformer, three phase inverter, interference bypass circuit, six passages control sampled measurements circuit, current transformer, voltage transformer (VT), control panel, output device etc.Wherein, disturb the bypass circuit front to connect three-phase inverting circuit and three-phase transformer, the back connects current transformer and six passages control sampled measurements circuit, and six passages control sampled measurements circuit front links to each other with current transformer, voltage transformer (VT) and interference bypass circuit, the back is connected to output device by control panel.
Described instrument adopts integral structure, be built-in with variable-frequency power sources module and variable ratio frequency changer pressure regulation out-put supply, changeable frequency is 45Hz or 55Hz, and pass through digital filtering technique, can avoid on-the-spot various power frequency interference signals effectively, make instrument realize high precision, measure accurately and reliably, by adopting DSP fast digital signal processor as handling core, can guarantee that measurement data improves its calculation process ability under the prerequisite accurately, thereby improve the reaction and the processing speed of instrument.
Described interference bypass circuit is made up of a plurality of electric capacity and inductance, will send into current transformer and six passages control sampled measurements circuit after the command signal adjustment of flow through three phase inverter and three-phase transformer from the control panel.After the information of voltage measurement terminal that described six passages control sampled measurements circuit will come from current measurement terminal, the voltage transformer (VT) of the order summation current transformer that disturbs bypass circuit is collected and is put in order, processing through DSP fast digital signal processor, show at output terminal, for the selection of next step order.
Described output device comprises liquid crystal display touch-screen, printer and PORT COM, wherein touch-screen has bigger display interface and the prompting of shirtsleeve operation step, each one all is perfectly clear, operating personnel need not be extra the professional skill training can both use, touch step and the process just can finish measurement gently.
Beneficial effect
The utility model adopts bypass circuit, greatly reduces the security threat of induced voltage to equipment and personnel; Variable-frequency power sources module and digital filtering technique have been avoided the interference of power frequency electric field to test simultaneously, fundamentally solve highfield and disturbed a difficult problem of accurately measuring down, adopt DSP high-speed figure process chip again, can also measure the power frequency parameter of transmission line of electricity extremely apace.The utility model adopts integral structure, test does not need very big electric current, just do not need very large power source, reduced the volume and weight of instrument greatly, its compact conformation, measure accurate, easy to operate, can significantly reduce the test job amount, increase work efficiency, for on-the-spot test provides great convenience.
Description of drawings
Fig. 1 is a theory structure synoptic diagram of the present utility model;
Fig. 2 is the instrument panel index map of the utility model preferred embodiment;
Fig. 3 is the wiring diagram of the utility model preferred embodiment;
Fig. 4 is the wiring diagram of another preferred embodiment of the utility model;
Fig. 5 is the wiring diagram of another preferred embodiment of the utility model;
Fig. 6 is the wiring diagram of another preferred embodiment of the utility model;
Fig. 7 is the wiring diagram of another preferred embodiment of the utility model;
Fig. 8 is the wiring diagram of another preferred embodiment of the utility model.
Wherein, circuit 5, voltage transformer (VT) 6, current transformer 7, touch-screen 8, printer 9, PORT COM 10, accessory power supply 11 are looked in control panel 1, six passages control sampled measurements circuit 2, three phase inverter 3, three-phase transformer 4, interference among Fig. 1;
Touch-screen 8, printer 9, PORT COM 10, emergency stop push button 12, system reset pad 13, testing power supply output plughole 14, voltage measurement input jack 15, ground connection binding post 16, power input socket 17, input power switch 18 among Fig. 2;
Test line 19, instrument output 20, voltage measurement 21, opposite end short circuit ground connection 22, opposite end ground connection 23, opposite end unsettled 24 among Fig. 3,4,5,6,7,8.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to the alien frequencies line parameter circuit value tester of Fig. 1, comprise three-phase transformer 4, three phase inverter 3, interference bypass circuit 5, six passages control sampled measurements circuit 2, current transformer 6, voltage transformer (VT) 7, control panel 1, touch-screen 8, printer 9, PORT COM 10, accessory power supply 11 etc.Wherein, what interference bypass circuit 5 fronts connected is three-phase inverting circuit 3 and three-phase transformer 4, the back connects current transformer 7 and six passages control sampled measurements circuit 2, and six passages control sampled measurements circuit, 2 fronts link to each other with current transformer 6, voltage transformer (VT) 7 and interference bypass circuit 5, the back is by control panel 1, be connected to output device, comprise touch-screen 8, printer 9, PORT COM 10 and accessory power supply 11.
During measurement, from touch-screen 8 signal of giving an order, flow through three phase inverter 3 and three-phase transformer 4, enter and disturb in the bypass circuit 5,, send to measuring junction through disturbing adjustment and the arrangement of looking on circuit 5, measure and collect data by six passages control sampled measurements circuit 2 by the current measurement terminal of the voltage measurement terminal summation current transformer 7 of voltage transformer (VT) 6, signal is passed to processor then, is presented at touch-screen 8 by control panel 1 control, for the selection of next step order.After measuring end, can print, also can carry out external storage by the circumscribed USB interface of PORT COM 10 by printer 9.
Alien frequencies line parameter circuit value tester referring to Fig. 2 is the instrument panel index map.Wherein, emergency stop push button 12 and system reset pad 13 are the master control button, when emergency stop push button 12 was used for test process and runs into accident, all out-put supplies of emergency cut-off also made all wiring ground connection, and system reset pad 13 is used to provide the instrument internal central processing unit to reset; Testing power supply output plughole 14 connects the current measurement terminal, comprise A (yellow), B (green), C (redness) and N (black) totally 4 terminals, the instrument test out-put supply is provided, voltage measurement input jack 15 connects the voltage measurement terminal, comprise UA (yellow), UB (green), UC (redness) and UN (black) totally 4 terminals, the instrument test input voltage is provided; Ground connection binding post 16 is used to protect instrument ground, because instrument itself has earth protective device, is in ground state so will guarantee ground connection binding post 16; Power input socket 17 is used for external power supply, for instrument provides power supply power, input power switch 18 is exactly the total control switch of instrument power source, open switch, instrument enters duty, off switch is also closed all power-supply systems of instrument internal simultaneously, and emergency condition should be closed this switch immediately and be pulled out input power cord.
Referring to Fig. 3,4,5,6,7,8 alien frequencies line parameter circuit value tester, for tackling the wiring diagram of different situations, be respectively positive sequence impedance wiring, zero sequence impedance wiring, measurement of mutual inductance wiring, the wiring of positive sequence electric capacity, the wiring of zero sequence electric capacity, coupling capacitance measurement wiring.Wherein, instrument output 20, voltage measurement 21 two ends are ground connection respectively, inserts circuit-under-test 19 again respectively, and circuit-under-test 19 other end disposal routes are respectively opposite end short circuit ground connection 22, opposite end ground connection 23, opposite end unsettled 24 according to the difference of each wiring diagram.
Before the test beginning, the circuit downlead of measuring junction is reliably inserted the earth, and with the reliable the earth that insert of the instrument ground binding post 16 in the panel upper left corner, then respectively with power supply output signal ground N and the reliable respectively the earth that inserts of voltage output signal ground UN, testing power supply lead-out terminal A, B, C are connected to route survey downlead instrument power source side, at last with voltage measurement terminal UA, UB, UC line attachment downlead line side, after the instrument test wiring is finished, open the ground connection of circuit downlead again, with assurance equipment and operating personnel's safety.
Instrument test adopts the four-electrode method principle, and test line needs 3 of electric current downleads, 3 of voltage downleads, and the testing current line is positioned at the testing power supply side, and the voltage downlead is positioned at the line side, with the p-wire of elimination measuring junction and the influence of contact resistance.If the test downlead is only drawn 3 terminals, as far as possible with the enough big lead of sectional area, and assurance reliably is connected with the route survey end, avoids introducing bigger wiring error.
The instrument test wiring is very simple and direct, only need once insert above-mentioned p-wire, cooperates by the instrument automatic control survey mode and the test line opposite end mode of connection, can finish institute's order parameter and measure, and improves testing efficiency and processing safety greatly.
Instrument internal reliably connects three terminals such as instrument ground binding post in N, UN, the upper left corner, and it is just passable that the instrument ground binding post that can only connect the upper left corner during field wiring is received the earth.
When connecting instrument and test line, guarantee route survey end reliable ground, the back recovery is finished in test, gets ground wire, and instrument can be abutted against the earth, notices that each test signal ground wire will finish according to the wiring index map.
In the described output device, printer is full-automatic temperature-sensitive printer, and PORT COM is a USB interface, can utilize USB flash disk to shift very easily and stores data and measurement result.Wherein, the storage data can reach 100 groups.
More than show and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (3)

1. alien frequencies line parameter circuit value tester, comprise three-phase transformer, three phase inverter, interference bypass circuit, six passages control sampled measurements circuit, current transformer, voltage transformer (VT), control panel, output device, it is characterized in that, described instrument is integrated, built-in variable-frequency power sources module and variable ratio frequency changer pressure regulation out-put supply, changeable frequency is 45Hz or 55Hz.
2. alien frequencies line parameter circuit value tester according to claim 1 is characterized in that, described instrument adopts DSP high-speed figure process chip.
3. alien frequencies line parameter circuit value tester according to claim 1 is characterized in that described output device comprises LCDs, printer and PORT COM, and wherein, described LCDs is the touch-screen that shows the operation steps prompting.
CN201020687669XU 2010-12-29 2010-12-29 Parameter tester for pilot frequency line Expired - Fee Related CN201965178U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201020687669XU CN201965178U (en) 2010-12-29 2010-12-29 Parameter tester for pilot frequency line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201020687669XU CN201965178U (en) 2010-12-29 2010-12-29 Parameter tester for pilot frequency line

Publications (1)

Publication Number Publication Date
CN201965178U true CN201965178U (en) 2011-09-07

Family

ID=44527724

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201020687669XU Expired - Fee Related CN201965178U (en) 2010-12-29 2010-12-29 Parameter tester for pilot frequency line

Country Status (1)

Country Link
CN (1) CN201965178U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102590627A (en) * 2012-04-01 2012-07-18 甘肃省电力公司电力科学研究院 Test instrument for high-voltage power transmission line
CN103616544A (en) * 2013-11-23 2014-03-05 国家电网公司 Intelligent control device for measurement of positive-sequence parameter and zero-sequence parameter of high-tension power transmission line
CN103675535A (en) * 2013-12-02 2014-03-26 国家电网公司 High-tension transmission line power frequency parameter testing and testing connection switching integrated device
CN104777390A (en) * 2015-05-04 2015-07-15 山东达顺电子科技有限公司 Pilot frequency testing device for power-frequency parameters of line

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102590627A (en) * 2012-04-01 2012-07-18 甘肃省电力公司电力科学研究院 Test instrument for high-voltage power transmission line
CN102590627B (en) * 2012-04-01 2013-10-23 甘肃省电力公司电力科学研究院 Test instrument for high-voltage power transmission line
CN103616544A (en) * 2013-11-23 2014-03-05 国家电网公司 Intelligent control device for measurement of positive-sequence parameter and zero-sequence parameter of high-tension power transmission line
CN103675535A (en) * 2013-12-02 2014-03-26 国家电网公司 High-tension transmission line power frequency parameter testing and testing connection switching integrated device
CN104777390A (en) * 2015-05-04 2015-07-15 山东达顺电子科技有限公司 Pilot frequency testing device for power-frequency parameters of line

Similar Documents

Publication Publication Date Title
CN207352137U (en) A kind of adaptor power supplies Auto-Test System
CN103257286A (en) Method and system of automatic testing of electric automobile charging facilities
CN201867490U (en) Calibration device for multiepitope standard electric energy meters
CN201965178U (en) Parameter tester for pilot frequency line
CN204832351U (en) Small resistance and insulation resistance's integrated tester
CN206114775U (en) Multi -functional DC resistance measuring appearance
CN102654571A (en) Comprehensive tester of current transformer
CN106771632A (en) Multi-channel DC resistance meter
CN203658453U (en) Wireless secondary voltage-drop and load tester provided with wireless synchronous communication function
CN201555891U (en) Nine-current and four-voltage measuring device
CN205157654U (en) Mounting structure of ground resistance test system
CN110058188A (en) The active detector of electric energy metering device
CN206863160U (en) A kind of multi-thread detector
CN203178469U (en) Portable transmitter verification meter
CN205720467U (en) A kind of distributing automation apparatus comprehensive tester
CN2569162Y (en) Device for live detecting resistant current of three phase lighting arrestor
CN202649455U (en) Embedded accuracy tester for current transformer
CN201319049Y (en) High-tension current mutual-inductor transformation ratio tester
CN103439682A (en) Portable current transformer composite error testing device and method for testing composite error of current transformer by utilizing portable current transformer composite error testing device
CN210465605U (en) Multifunctional circuit board fault intelligent detection system
CN105785197A (en) Distribution automation device integrated tester
CN110672984A (en) Portable direct current system ground fault detection device
CN204347173U (en) High speed on off test system
CN105699832A (en) Cable checking and grouping method
CN203825082U (en) Current-to-voltage conversion tandem type clamp-free volt-ampere phase meter capable of measuring small load

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110907

Termination date: 20131229