CN204462327U - A kind of switch or circuit breaker dynamic property test instrument - Google Patents

A kind of switch or circuit breaker dynamic property test instrument Download PDF

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Publication number
CN204462327U
CN204462327U CN201420710552.7U CN201420710552U CN204462327U CN 204462327 U CN204462327 U CN 204462327U CN 201420710552 U CN201420710552 U CN 201420710552U CN 204462327 U CN204462327 U CN 204462327U
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China
Prior art keywords
grating sensor
pld
programmable logic
high speed
logic device
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Expired - Fee Related
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CN201420710552.7U
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Chinese (zh)
Inventor
周自力
张丹
黄彦
黄华元
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Wuhan Hua Electricity High-Tech Electric Appliance Equipment Co Ltd
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Wuhan Hua Electricity High-Tech Electric Appliance Equipment Co Ltd
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Priority to CN201420710552.7U priority Critical patent/CN204462327U/en
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Publication of CN204462327U publication Critical patent/CN204462327U/en
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Abstract

The utility model discloses a kind of switch or circuit breaker dynamic property test instrument, comprise passage one, passage two, Phototube Coupling, delivery outlet, the micro-process of high speed, grating sensor pulse one, grating sensor pulse two, programmable logic device (PLD), ROM/RAM, RS232, palm PC, directional information module, described passage one, passage two all leads in Phototube Coupling, described delivery outlet and the micro-process of high speed interact, described grating sensor pulse one, grating sensor pulse two and the micro-process of high speed, programmable logic device (PLD) communicates, the micro-process of described high speed, grating sensor pulse two interacts, described programmable logic device (PLD), RS232 and palm PC interact, described programmable logic device (PLD) acts on directional information module.The utility model is from new technology index, and wherein improving is stroke, time measurement accuracy and data analysis capabilities the most significantly, no matter the model machine therefore newly developed is in accuracy of measurement, stability, or ease for operation and be convenient for carrying and all reach requirement.

Description

A kind of switch or circuit breaker dynamic property test instrument
Technical field
The utility model relates to the technical field of tester, especially a kind of switch or circuit breaker dynamic property test instrument.
Background technology
Along with pushing forward comprehensively of the whole nation " two nets " transformation process, the kind and the quantity that enter all kinds of high-voltage switch gears of nationwide integrated power grid are increasing.How there is great impact from the operation of characteristic on electric system of the angle increasing power grid security management high-voltage switch gear of switch management.According to the statistics of 26 nets, company of province, at the bottom of calendar year 2001, the high-voltage switch gear run in electric system increases by 16477 than last year, increases by 7.99%.According to the divisions of responsibility can of the obstacle that causes the accident, workmanship is bad is its first cause, is secondly maintenance responsibility.From device type, the failure rate of SF6 and vacuum switch accounts for more than 50% of total failare rate, becomes the principal element affecting power grid security.
Perform the implementing of three files such as National Electricity Co.'s " high-tension switch gear administrative provisions ", " the anti-accident technical measures of high-tension switch gear " and " high-tension switch gear quality supervision and control way ", implement, guarantee the safe and stable operation of switch, advanced technology must be adopted and high-quality switch dynamic characteristic measuring instrument carries out periodic detection to all types of isolating switchs in electric system, so switch dynamic characteristic measuring instrument has wide market in electric system.
State surveys existing switch dynamic characteristics tester poor reliability, and limitation is large, in-site installation difficulty, have impact on market sale and corporate image, be necessary to develop advanced in performance reliable new generation product, surmount the like product of other checkout equipment manufacturers, dominate the market.
Utility model content
For the problems referred to above, the utility model aims to provide a kind of switch or circuit breaker dynamic property test instrument.
For realizing this technical purpose, scheme of the present utility model is: a kind of switch or circuit breaker dynamic property test instrument, comprise passage one, passage two, photoisolator, delivery outlet, high speed microprocessor, first grating sensor pulse, second grating sensor pulse, programmable logic device (PLD), ROM/RAM, RS232, palm PC, directional information module, described passage one, passage two all leads in photoisolator, described delivery outlet and high speed microprocessor interact, described first grating sensor pulse, second grating sensor pulse and high speed microprocessor, programmable logic device (PLD) communicates, described high speed microprocessor, second grating sensor pulsion phase interaction, described programmable logic device (PLD), RS232 and palm PC interact, described programmable logic device (PLD) acts on directional information module.
The utility model needs according to scene the new product developed, and it is applicable to time of the high-voltage switch gears such as heavy wool, few oil, vacuum, SF6, velocity characteristic are tested.Require to measure intrinsic point of 12 fractures, closing time and the not time same period, reclosure time, spring number of times, bounce time, minimal time resolution reaches 1us simultaneously.Can measure point (conjunction) lock maximal rate, point (conjunction) lock average velocity, maximum measuring speed 50m/s, minimum resolution is 0.001m/s.Distance, the excess of stroke can be measured out, minimum resolution 1mm (1mm sensor) or 0.1mm (0.1mm sensor); Can measure branch wire time and the synchronism of the low-voltage electrical apparatus such as contactor, relay, minimal time resolution reaches 1us.Have just divide flexibly, just resultant velocity analytical calculation scheme.Adopt virtual instrument concept, simplify the operation.
Accompanying drawing explanation
Fig. 1 is the scheme sketch of information processing;
Fig. 2 represents the relative position of photoelectric sensor and grating scale in grating scale motion process successively.
Embodiment
Below in conjunction with accompanying drawing basis and specific embodiment, the utility model is described in further details.
As shown in Figure 1, a kind of switch of the utility model embodiment or circuit breaker dynamic property test instrument, comprise passage 1, passage 22, photoisolator 3, delivery outlet 4, high speed microprocessor 5, first grating sensor pulse 6, second grating sensor pulse 7, programmable logic device (PLD) 8, ROM/RAM9, RS23210, palm PC 11, directional information module 12, described passage 1, passage 22 all leads in photoisolator 3, described delivery outlet 4 and high speed microprocessor 5 interact, described first grating sensor pulse 6, second grating sensor pulse 7 and high speed microprocessor 5, programmable logic device (PLD) 8 communicates, described high speed microprocessor 5, second grating sensor pulse 7 interacts, described programmable logic device (PLD) 8, RS23210 and palm PC 11 interact, described programmable logic device (PLD) 8 acts on directional information module 12.
The utility model needs according to scene the new product developed, and it is applicable to time of the high-voltage switch gears such as heavy wool, few oil, vacuum, SF6, velocity characteristic are tested.Require to measure intrinsic point of 12 fractures, closing time and the not time same period, reclosure time, spring number of times, bounce time, minimal time resolution reaches 1us simultaneously.Can measure point (conjunction) lock maximal rate, point (conjunction) lock average velocity, maximum measuring speed 50m/s, minimum resolution is 0.001m/s.Distance, the excess of stroke can be measured out, minimum resolution 1mm (1mm sensor) or 0.1mm (0.1mm sensor); Can measure branch wire time and the synchronism of the low-voltage electrical apparatus such as contactor, relay, minimal time resolution reaches 1us.Have just divide flexibly, just resultant velocity analytical calculation scheme.Adopt virtual instrument concept, simplify the operation.Utilize the advantage of PC, complete graphical data, analytical calculation is specialized.。As shown below, adopt double-photoelectric-sensor, adopt suitable logic analysis, both effectively can suppress interference and edge pulse signal, ensure the accurate-metering to sensor pulse, also can detect direction of motion simultaneously.In figure, G1 and G2 is photoelectric sensor, the distance (at a distance of 2.5 times in figure) of both are separated by (2n+1) X0.5 times of grating scale.When photoelectric sensor is in grating spacings edge, now just easily produce the indefinite pulse of number, just these pulsing effect measuring accuracy of instrument.We take two photoelectric sensors to eliminate the impact of these pulses.In Fig. 2, G1 is in marginal position x, supposes now to create 5 pulses, records the generation moment of last pulse, is designated as T1.In figure C, G1 is in another one marginal position y, supposes now to create 8 pulses, records the generation moment of last pulse, is designated as T2.Utilize a series of moment of recording and pulse number, just can obtain the parameters such as the stroke of switch and speed by analysis.If adopt monopulse counting method, the moment number of the pulses generation recorded just has 13.Adopt level detection method, the moment number of the pulses generation recorded is not likely two.The error that other designs that Here it is cannot overcome.And the design, by G2, can correctly obtain these two parameters of T1 and T2.For Fig. 2, although G1 creates 5 pulses, G2 is in stable level state, and before the level upset of G2 (namely before the z of G2 in-position), these 5 pulses can only can be regarded as one, and recording the generation moment of last pulse, is exactly T1.In like manner, also T2 can be obtained.That is, these 13 pulses are divided into two parts by the pulse produced at z place, position by detecting G2, thus just obtain T1 and T2.Although G2, does not affect the detection of T1, T2 also by pulse indefinite for the number produced at z place, position.Like this, carry out logic analysis by the pulse produced G1 and G2, just can ensure the correctness of pulse number.Ensure the accuracy of the position of G1, G2, can consider to adopt two track infrared sensor; Ensure the accuracy of grating scale.Signal analysis: the switching movements signal of sensor collection is stored by microprocessor and arranges.When the movable information frequency collected higher and simultaneously have nodal information to be mixed into time general processor will because of over-burden, and produce the accuracy and precision that larger measured deviation is difficult to ensure to measure, can not meet technical requirement.For alleviating processor burden, a special programmable logic device (PLD) be have employed to the logic analysis of photoelectric sensor pulse and come, and " high speed processor " have employed the TMS320F206 digital signal processor that an instruction cycle is 1ns.Their combination ensure that high real-time and the high accuracy of measurement.The technical scheme that upper computer software adopts: this measuring instrument host computer procedure runs in Windows9x/NT/2000/XP operating system platform, adopts object-oriented programming method design.Host computer procedure, according to user-selected test condition, adopts serial ports and self-defining stipulations and slave computer to carry out communication, thus realizes the Control & data acquisition to slave computer.Host computer procedure carries out certain calculating according to the test raw data that slave computer is sent back, obtains corresponding test findings, and result is graphically shown, and user can carry out the operation such as convergent-divergent, inquiry to the figure of display.Raw data can also be kept in computer disk by host computer procedure, and the data file of preservation can be opened and carry out analytical calculation.Implementation method and performance.Have employed correct disposal route and multiple effective interference protection measure, make system in strongly disturbing situation, test obtains correct data, reaches the requirement of on-the-spot test.The installation that Sensor section can adapt to most of switch is clamping.Dipulse scheme must be retained, just can reach the high-fidelity record of switching movements.The measurement of vacuum switch must by 0.1mm sensor, we have employed and use for reference and improve parallel mode, on the basis of Xin electricity company sensor, incorporate the photoelectricity mechanism of Changchun three peak sensor company and Xian Satellite Control company limited, by a large amount of field experiment, define a set of more advanced, practical sensor mechanism.Upper computer software part is at inception stage of project, and in order to realize the communication of host computer and slave computer, the communication protocol adopted when first must determine mutual communication, this part is the basis of host computer and slave computer interface.Can well with improve before slave computer carry out communication and measurement, achieve all functions of software.In August, mainly add the printing function of test findings, selected curve can be printed easily.Meanwhile, host computer is taken to scene and carries out site test by us together with slave computer, and test findings shows, these properties of product are stablized, and test of many times result is consistent, this results in the favorable comment of user.The model machine newly developed as seen of the test data analysis obtained by site test not only has improving fundamentally than company old product, and is in advanced level at home.From new technology index, wherein improving is stroke, time measurement accuracy and data analysis capabilities the most significantly.No matter the model machine therefore newly developed is in accuracy of measurement, stability, or ease for operation and be convenient for carrying and all reach design objective requirement.
The above; be only preferred embodiment of the present utility model; not in order to limit the utility model, every above embodiment is done according to technical spirit of the present utility model any trickle amendment, equivalently replace and improve, within the protection domain that all should be included in technical solutions of the utility model.

Claims (1)

1. a switch or circuit breaker dynamic property test instrument, comprise passage one, passage two, photoisolator, delivery outlet, high speed microprocessor, first grating sensor pulse, second grating sensor pulse, programmable logic device (PLD), ROM/RAM, RS232, palm PC, directional information module, it is characterized in that: described passage one, passage two all leads in Phototube Coupling, described delivery outlet and high speed microprocessor interact, described first grating sensor pulse, second grating sensor pulse and high speed microprocessor, programmable logic device (PLD) communicates, described high speed microprocessor, second grating sensor pulsion phase interaction, described programmable logic device (PLD), RS232 and palm PC interact, described programmable logic device (PLD) acts on directional information module.
CN201420710552.7U 2014-11-24 2014-11-24 A kind of switch or circuit breaker dynamic property test instrument Expired - Fee Related CN204462327U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107271155A (en) * 2017-04-26 2017-10-20 中国南方电网有限责任公司超高压输电公司贵阳局 A kind of high-voltage breaker operation mechanism acting characteristic parameter online system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107271155A (en) * 2017-04-26 2017-10-20 中国南方电网有限责任公司超高压输电公司贵阳局 A kind of high-voltage breaker operation mechanism acting characteristic parameter online system

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Granted publication date: 20150708

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