CN101672890A - Testing device of switching-on resistance of portable beaker - Google Patents
Testing device of switching-on resistance of portable beaker Download PDFInfo
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- CN101672890A CN101672890A CN200910024320A CN200910024320A CN101672890A CN 101672890 A CN101672890 A CN 101672890A CN 200910024320 A CN200910024320 A CN 200910024320A CN 200910024320 A CN200910024320 A CN 200910024320A CN 101672890 A CN101672890 A CN 101672890A
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Abstract
The invention provides a testing device of switching-on resistance of a portable beaker, which comprises a notebook computer 7, wherein the notebook computer 7 is connected with a data acquisition card 6 based on a network interface by a network cable; the signal input end of the data acquisition card 6 based on the network interface is connected with a beaker switching-on resistance measurement unit 5; a testing wire on the beaker switching-on resistance measurement unit 5 is respectively hung on a breaker 1 of an A phrase, a breaker 2 of a B phase and a breaker 3 of a C phase by a hook rail4; the testing wire is hung on a fracture 11 of a detected breaker 17 by the hook rail 4; a fracture 16 is grounded by an earthing knife-switch or an earth wire and acquires signals from a measuring signal output point 10; acquired data are analyzed and computed by relevant arithmetic to obtain a switching-on resistance value, and a closing time of a resistor contact 15 and a main contact 14 is estimated by the change of signal amplitudes, thereby working out an engaged time. The testing device has the advantages of good portability, convenient measurement and high efficiency.
Description
Technical field
The invention belongs to the proving installation of power equipment, relate in particular to a kind of testing device of switching-on resistance of portable beaker.
Background technology
In electric system, exist switching overvoltage of a great variety, that characteristic is different, breaker operator is the cause of most of switching overvoltage.In supergrid, along with the raising of breaker arc extinguishing ability and the installing of lightning arrester, closing the ceases to be busy superpotential becomes main switching overvoltage, and particularly the nonloaded line of the extra high voltage network of long distance closes a floodgate, and superpotential is more serious.To close the ceases to be busy superpotential in order limiting, in the extra high voltage network of long distance, isolating switch to be installed parallel resistance close the superpotential major measure of ceases to be busy as restriction.According to the relevant regulations of country, the primary cut-out after the finished product of primary cut-out production and new installation and the maintenance must carry out the test of switching-on resistance value and making time before putting into operation.By test to switching-on resistance, can find the internal fault of isolating switch, thus the safe operation of the equipment of assurance.
The switching-on resistance of isolating switch generally is positioned over isolating switch inside, therefore its measurement is acquired a certain degree of difficulty.Can directly measure for the isolating switch that minority has measurement point to draw outward with multimeter, but must utilize high empty wagons that the tester is raised to the high-altitude and carry out operation, a lot of isolating switchs need be removed just energy measurement of screw, operating personnel often are difficult to work too by force because of induced electricity, whole surveying work bothers and is dangerous very much, and efficient is low; For the isolating switch that does not much have measurement point to draw, can not be directly with common this resistance value of table instrumentation amount, the back of isolating switch can only being disintegrated is taken out this resistance and is measured, and this metering system can only just can be finished when the isolating switch overhaul; Also have some isolating switch producers that slow-disconnecting and slow-connecting apparatus is provided on operating mechanism, utilize this device that isolating switch is closed slowly, make isolating switch remain on the switching-on resistance duty for a long time, at this moment can lead be hung the back that goes between to isolating switch fracture both sides with insulating bar and measure, but Measuring Time is very long with multimeter or wheatstone bridge.
At present domestic have only the minority instrument and equipment can successfully measure its switching-on resistance when breaker operator, and the switch testing instrument of most switch testing instrument manufacturer production can only measure the closing time of unbypassed isolating switch, and can't directly measure the switching-on resistance value and the making time of the isolating switch of band parallel resistance.Also have only minority isolating switch production firm that corresponding testing apparatus is arranged abroad, but prices are rather stiff.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the invention is to provide a kind of testing device of switching-on resistance of portable beaker, can directly measure the breaker closing resistance value and the making time of band parallel resistance, have easy to carryly, measure easy, characteristics of high efficiency.
To achieve these goals, the technical solution used in the present invention is: a kind of testing device of switching-on resistance of portable beaker, include notebook computer 7, notebook computer 7 links to each other with the network interface 6 of the data collecting card of interface Network Based by netting twine, the signal input part of the data collecting card 6 of interface Network Based links to each other with the signal output part of breaker closing resistance measurement unit 5, and the p-wire on the breaker closing resistance measurement unit 5 is articulated in respectively by peg 4 on the isolating switch 3 of isolating switch 2, C phase of isolating switch 1, the B phase of A phase.
Described breaker closing resistance measurement unit 5 is by rechargable power supplies 8, resistance 9, resistance 12, amplifier 19, comparer 24 is formed, wherein, resistance 9 links to each other with rechargable power supplies 8, resistance 9 is serially connected with on the fracture 11 of isolating switch 17, resistance 12 is connected to the fracture 11 and 16 two ends of isolating switch 17, measuring-signal 18 is taken out by measuring-signal output point 10, measuring-signal output point 10 links to each other with the positive pole of amplifier 19, the minus earth of amplifier 19, the signal output part of amplifier 19 links to each other with the input end of comparer 24, comparer 24 is by amplifier 20 and amplifier 22 and connect and constitute, the output terminal output trigger pip 25 of comparer 24, and the output terminal of amplifier 19 also links to each other with the signal input part of the data collecting card 6 of interface Network Based.
The data collecting card 6 of described interface Network Based has single-ended input 32 tunnel, and both-end is imported 16 analog input channels of 16 tunnel, the sampling rate of 100Kbs/s; 16 road I/O.
Described notebook computer 7 is installed the switching-on resistance of portable beaker testing software, behind the startup switching-on resistance of portable beaker testing software, enters measuring system.Click " beginning to measure " button, enter the measurement waiting status; Isolating switch 17 is received when closing a floodgate order and is begun to close a floodgate, the data collecting card 6 that the trigger pip of the output terminal of comparer 24 output simultaneously 25 triggers interface Network Based begins to gather, testing software carries out after digital filtering finishes Software Anti-interference and handle the data of gathering, the data of the gathering analytical calculation by following steps is drawn the switching-on resistance value, establish U
0Be supply voltage.When resistance contact head 15 closures of isolating switch 17, when main contact 14 disconnects, the magnitude of voltage U of measuring-signal output point 10
XBe U
X1When the main contact 14 of isolating switch 17 and resistance contact head 15 are all closed, the magnitude of voltage U of measuring-signal output point 10
XBe U
X2, draw as calculated, in resistance contact head 15 closures of isolating switch 17, when main contact 14 disconnects, the voltage U of measuring-signal output point 10
X1For
When isolating switch 17 was in "on" position, promptly main contact 14 and resistance contact head 15 were all closed, and fracture 11,16 is in short-circuit condition.By above formula, derive switching-on resistance R
XFor
The magnitude of voltage U that records when measuring-signal output point 10
XWhen changing, the contact action has been described, has write down the time T of contact action respectively
1, T
2, so the making time T of switching-on resistance is T=T
2-T
1
After calculating is finished the result is presented in the operation interface, clicks " preservation " button, can preserve measurement result; Click " data query " button and can inquire about measurement result, can generate form simultaneously; After measurement finishes, can click " logging off " button and withdraw from measuring system, also can continue to measure next group data.
The invention has the beneficial effects as follows 1) portable, be convenient for measuring.This device volume is little, is easy to carry, and surveying work can be finished on the ground, need not work high above the ground, and surveying work is easy, efficient.2) software operation is simple.Only need button click can finish operations such as measurement, data query.3) data space is big.Adopt hard disc of computer as storage tool, can preserve the data of long duration.
Description of drawings
Fig. 1 is a system construction drawing of the present invention.
Fig. 2 is circuit theory diagrams of the present invention.
Fig. 3 is this bright software flow pattern.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and principle of work are described in further detail.
With reference to Fig. 1, a kind of testing device of switching-on resistance of portable beaker, the p-wire of drawing from breaker closing resistance measurement unit 5 is articulated in respectively by peg 4 on the isolating switch 3 of isolating switch 2, C phase of isolating switch 1, the B phase of A phase, the signal output part of breaker closing resistance measurement unit 5 links to each other with the signal input part of the data collecting card 6 of interface Network Based, and the data collecting card of notebook computer 7 and interface Network Based 6 links to each other by netting twine.When isolating switch 1,2,3 closes a floodgate, pass to breaker closing resistance measurement unit 5 through peg 4 output signals by p-wire, the data collecting card 6 that the while trigger pip triggers interface Network Based begins to gather, the data of Cai Jiing reach in the notebook computer 7 by netting twine at last, carry out data processing and related algorithm calculates switching-on resistance value and making time through the switching-on resistance of portable beaker testing software.
With reference to Fig. 2, the circuit of breaker closing resistance measurement unit comprises resistance 9, and resistance 9 links to each other with rechargable power supplies 8, and resistance 9 is serially connected with on the fracture 11 of isolating switch 17, at fracture 11 and 16 two ends and the connecting resistance 12 of isolating switch 17, measuring-signal 18 is taken out by measuring-signal output point 10.Measuring-signal output point 10 links to each other with the positive pole of amplifier 19, the minus earth of amplifier 19.Comparer 24 is by amplifier 20 and amplifier 22 and connect and constitute, and the input end of comparer 24 links to each other with the output terminal of amplifier 19, the output terminal output trigger pip 25 of comparer 24.The output terminal of amplifier 19 links to each other with the data collecting card of interface Network Based 6, and notebook computer 7 is connected with the data collecting card 6 of interface Network Based by netting twine.
With reference to Fig. 3, the switching-on resistance of portable beaker testing process is as follows: p-wire is articulated to fracture 11 places of tested isolating switch 17 by peg 4, and fracture 16 is by ground cutter or ground wire grounded.After starting the switching-on resistance of portable beaker testing software, enter measuring system.Click " beginning to measure " button, enter the measurement waiting status.Isolating switch 17 is received when closing a floodgate order and is begun to close a floodgate, the data collecting card 6 that the trigger pip of the output terminal of comparer 24 output simultaneously 25 triggers interface Network Based begins to gather the measuring-signal 18 by 10 outputs of measuring-signal output point, measuring-signal 18 is delivered to notebook computer 7 by the data collecting card 6 of interface Network Based, the switching-on resistance of portable beaker testing software carries out after digital filtering finishes Software Anti-interference and handle measuring-signal 18, use following algorithm that the data analysis of gathering is calculated the switching-on resistance value, establish U
0Be supply voltage.When resistance contact head 15 closures of isolating switch 17, when main contact 14 disconnects, the magnitude of voltage U of measuring-signal output point 10
XBe U
X1When the main contact 14 of isolating switch 17 and resistance contact head 15 are all closed, the magnitude of voltage U of measuring-signal output point 10
XBe U
X2Draw as calculated, in resistance contact head 15 closures of isolating switch 17, when main contact 14 disconnects, the voltage U of measuring-signal output point 10
X1For
When isolating switch 17 was in "on" position, promptly main contact 14 and resistance contact head 15 were all closed, and fracture 11,16 is in short-circuit condition.By above formula, derive switching-on resistance R
XFor
The magnitude of voltage U that records when measuring-signal output point 10
XWhen changing, the contact action has been described, has write down the time T of contact action respectively
1, T
2, so the making time T of switching-on resistance is T=T
2-T
1
At last the result is presented in the operation interface, clicks " preservation " button, can preserve measurement result.Click " data query " button and can inquire about measurement result, can generate form simultaneously.After measurement finishes, can click " logging off " button and withdraw from measuring system, also can continue to measure next group data.
Principle of work of the present invention is: fracture 11 places that p-wire are articulated to tested isolating switch 17 by peg 4, fracture 16 is by ground cutter or ground wire grounded, and from measuring-signal output point 10 acquired signal, the utilization related algorithm calculates the switching-on resistance value with the data analysis of gathering, thereby judges that by the signal amplitude variation time of resistance contact head 15 and main contact 14 closures calculates making time simultaneously.
Among the figure, 1 is A phase breaker, and 2 is B phase breaker, and 3 is C phase breaker, and 4 is peg, and 5 is breaker closing resistance measurement unit, and 6 is the data collecting card of interface Network Based, and 7 is notebook computer, and 8 is rechargable power supplies, and 9 is resistance R1, 10 is the measuring-signal output point, and 11,16 is two fractures of breaker, and 12 is resistance R2, 13 is the breaker closing resistance Rx, 14 is main contact K0, and 15 is resistance contact head K1, and 17 is breaker, 18 Be output signal, 19 is amplifier D0, and 20 is amplifier D1, and 21,23 is reference voltage, 22 is amplifier D2, and 24 is comparator, and 25 is triggering signal.
Claims (3)
1, a kind of testing device of switching-on resistance of portable beaker, include notebook computer (7), it is characterized in that, notebook computer (7) links to each other by the network interface of netting twine with the data collecting card (6) of interface Network Based, the signal input part of the data collecting card of interface Network Based (6) links to each other with the signal output part of breaker closing resistance measurement unit (5), and the p-wire on the breaker closing resistance measurement unit (5) is articulated in respectively by peg (4) on the isolating switch (3) of isolating switch (2), C phase of isolating switch (1), the B phase of A phase.
2, a kind of testing device of switching-on resistance of portable beaker according to claim 1, it is characterized in that, described breaker closing resistance measurement unit (5) is by rechargable power supplies (8), resistance (9), resistance (12), amplifier (19), comparer (24) is formed, wherein, resistance (9) links to each other with rechargable power supplies (8), resistance (9) is serially connected with on the fracture (11) of isolating switch (17), resistance (12) is connected to the fracture (11) and fracture (16) two ends of isolating switch (17), measuring-signal (18) is taken out by measuring-signal output point (10), measuring-signal output point (10) links to each other with the positive pole of amplifier (19), the minus earth of amplifier (19), the signal output part of amplifier (19) links to each other with the input end of comparer (24), comparer (24) is by amplifier (20) and amplifier (22) and connect formation, the output terminal output trigger pip (25) of comparer (24), the output terminal of amplifier (19) also links to each other with the data collecting card (6) of interface Network Based, and notebook computer (7) is connected with the data collecting card (6) of interface Network Based by netting twine.
3, a kind of testing device of switching-on resistance of portable beaker according to claim 1, it is characterized in that the data collecting card of described interface Network Based (6) has single-ended input 32 tunnel, both-end is imported 16 analog input channels of 16 tunnel, the sampling rate of 100Kbs/s, 16 road I/O.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910024320A CN101672890A (en) | 2009-10-14 | 2009-10-14 | Testing device of switching-on resistance of portable beaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910024320A CN101672890A (en) | 2009-10-14 | 2009-10-14 | Testing device of switching-on resistance of portable beaker |
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| CN101672890A true CN101672890A (en) | 2010-03-17 |
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| CN200910024320A Pending CN101672890A (en) | 2009-10-14 | 2009-10-14 | Testing device of switching-on resistance of portable beaker |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389416A (en) * | 2012-05-10 | 2013-11-13 | 欧米克朗电子仪器有限公司 | Measurement of a resistance of a switch contact of an electrical circuit breaker |
| CN103884916A (en) * | 2014-03-21 | 2014-06-25 | 国家电网公司 | Novel topology loop for measuring breaker loop resistance and measuring method of novel topology loop |
| CN104459529A (en) * | 2014-12-21 | 2015-03-25 | 国家电网公司 | Double-loop-current testing method for mechanical characteristic test of transformer substation high-voltage circuit breaker |
| CN107015106A (en) * | 2017-06-02 | 2017-08-04 | 广州思壮电气股份有限公司 | Ground state detection unit, earthing or grounding means and ground state detection method |
| CN108896907A (en) * | 2018-08-27 | 2018-11-27 | 云南电网有限责任公司电力科学研究院 | A kind of the branch wire time test device and method of double break circuit breaker |
| CN111044889A (en) * | 2019-11-19 | 2020-04-21 | 平高集团有限公司 | Method for measuring reset time of damping type closing resistor of high-voltage circuit breaker |
| CN111596204A (en) * | 2020-05-11 | 2020-08-28 | 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 | Alternating current field breaker fracture alternating current withstand voltage test system and method |
-
2009
- 2009-10-14 CN CN200910024320A patent/CN101672890A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389416A (en) * | 2012-05-10 | 2013-11-13 | 欧米克朗电子仪器有限公司 | Measurement of a resistance of a switch contact of an electrical circuit breaker |
| US9322880B2 (en) | 2012-05-10 | 2016-04-26 | Omicron Electronics Gmbh | Measurement of a resistance of a switching contact of an electrical circuit breaker |
| CN103389416B (en) * | 2012-05-10 | 2016-07-06 | 欧米克朗电子仪器有限公司 | The resistance measurement of the switch contact of circuit-breaker |
| CN103884916A (en) * | 2014-03-21 | 2014-06-25 | 国家电网公司 | Novel topology loop for measuring breaker loop resistance and measuring method of novel topology loop |
| CN104459529A (en) * | 2014-12-21 | 2015-03-25 | 国家电网公司 | Double-loop-current testing method for mechanical characteristic test of transformer substation high-voltage circuit breaker |
| 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 |
| CN107015106A (en) * | 2017-06-02 | 2017-08-04 | 广州思壮电气股份有限公司 | Ground state detection unit, earthing or grounding means and ground state detection method |
| CN108896907A (en) * | 2018-08-27 | 2018-11-27 | 云南电网有限责任公司电力科学研究院 | A kind of the branch wire time test device and method of double break circuit breaker |
| CN108896907B (en) * | 2018-08-27 | 2024-01-23 | 云南电网有限责任公司电力科学研究院 | Switching-on and switching-off time testing device and method for double-break circuit breaker |
| CN111044889A (en) * | 2019-11-19 | 2020-04-21 | 平高集团有限公司 | Method for measuring reset time of damping type closing resistor of high-voltage circuit breaker |
| CN111044889B (en) * | 2019-11-19 | 2021-12-17 | 平高集团有限公司 | Method for measuring reset time of damping type closing resistor of high-voltage circuit breaker |
| CN111596204A (en) * | 2020-05-11 | 2020-08-28 | 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 | Alternating current field breaker fracture alternating current withstand voltage test system and method |
| CN111596204B (en) * | 2020-05-11 | 2023-12-12 | 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 | Alternating-current field breaker fracture alternating-current withstand voltage test system and method |
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Open date: 20100317 |