CN102819003A - Remote-control partial discharge photoelectric generator - Google Patents
Remote-control partial discharge photoelectric generator Download PDFInfo
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- CN102819003A CN102819003A CN2012103032753A CN201210303275A CN102819003A CN 102819003 A CN102819003 A CN 102819003A CN 2012103032753 A CN2012103032753 A CN 2012103032753A CN 201210303275 A CN201210303275 A CN 201210303275A CN 102819003 A CN102819003 A CN 102819003A
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- shelf depreciation
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Abstract
The invention provides a remote-control partial discharge photoelectric generator which is used for a simulation test or a laboratory test before partial discharge detecting equipment is used for a high-voltage test. The remote-control partial discharge photoelectric generator comprises electromagnets DC including an electromagnet DC1, an electromagnet DC2 and an electromagnet DC3, the electromagnets DC are arranged on a support at the bottom of an inner shell of a case and are provided with coils, a spring seat is arranged on the inner top of the case and is connected with an electromagnetic plate with a capacitor C, electrode tips include symmetric electrode tips of electrode plates DJ1, symmetric electrode tips of electrode balls DJ2 and symmetric electrode tips of electrode needles DJ3, a support plate with electrode tips is disposed on the outer side of an outer shell of the case and is inserted into the outer shell of the case to be embedded inside the case, an electrode holder on the support plate is connected with an alternating-current zero line on the inner side of the case, an input end of the electromagnetic plate connected with the capacitor C is connected with an alternating-current live-line switch K1 by an electrodeless voltage regulator circuit, and an output end of the electromagnetic plate is respectively connected with upper electrode ends of the symmetric electrode tips on the support plate alternately along with intermittent pull-in actions of the electromagnets DC with the coils.
Description
Technical field
The present invention relates to electric power system alternating current electricity shelf depreciation technical field of measurement and test, especially be suitable for Partial Discharge Detection equipment and get into the distance type shelf depreciation photoelectricity maker that simulation test or lab investigation before the high-potting are used.
Background technology
Shelf depreciation (partial discharge) is meant the discharge that the power equipment insulation takes place in the subrange under enough strong electric field action.Shelf depreciation all can be influential to insulating medium each time, and slight shelf depreciation is less to the influence of power equipment insulation, and the decline of dielectric strength is slower; And strong shelf depreciation then can make dielectric strength descend very soon; This is a key factor that makes the high voltage electric power equip ment insulation damages.High voltage electric equipment is because of long-time running, and load impact etc. can make insulation course bubble gap, high temperature impurity etc. occur, under the highfield effect, is prone to take place shelf depreciation.The charged protons of discharge can be clashed into the metal surface, forms electric charge and shifts, and produces luminescence phenomenon; Also can cause heat, sound, ozone etc. simultaneously, insulating material is further corroded, form vicious cycle; Finally make insulating material major injury and even puncture, cause serious potential safety hazard to electric system.Therefore, Partial Discharge Detection is one of effective ways of diagnosis power equipment insulation status.The shelf depreciation device detect mainly to as if photoelectricity and spectrum signal; Utilize photodetector and high frequency detecting head to convert optical radiation signal into electric signal; Reflect the power of shelf depreciation through analyzing and processing, thereby detect the seriousness of failure judgement electric signal.
But the shelf depreciation device because of on-the-spot early discharge phenomenon is difficult to find, and is in time handled by the scene in development and process on probation in severe case, can supply the source of trouble monitoring, test so be difficult to find.Do not have the source of trouble, just produced the how do i test, how to judge whether the partial discharge monitoring instrument reaches designing requirement and problem such as how in electrical network, to come into operation.To these problems, existing means are to the scene or local simulated experiment of discharging is done by high-voltage board factory.The characteristics of field testing procedure are to meet operating condition, near measured result, can select the optimum position of detector storing etc.; Shortcoming is that action is big, and grand style is big, and danger is also big; And once boost and often in a few minutes, accomplish; So if occur detector settle not to or device failure, under the emergency circumstance, be difficult to the fault analysis and judgement reason and take the correct method of mediating, cause test failure thus.
Summary of the invention
The objective of the invention is problem to above-mentioned existence; Distance type shelf depreciation photoelectricity maker is provided; Make it to supply with the shelf depreciation detection instrument and make signal acquisition process, can check the shelf depreciation detection instrument whether in proper working order again simultaneously, and judge that can checking drop into the on-the-spot use of high pressure; Easy to carry, the on-the-spot and all employable device in laboratory.
The object of the invention is realized accomplishing through following technical scheme: a kind of distance type shelf depreciation photoelectricity maker; Comprise a casing, electrode tip; Casing inner casing bottom is provided with supporting seat 11; Supporting seat 11 is provided with the electromagnet DC that has coil, and said electromagnet DC comprises electromagnet DC1, electromagnet DC2, electromagnet DC3; The top is provided with spring base 4 in the casing, and spring base 4 links together with the magnetic board 2 of charged container C, and said electrode tip comprises battery lead plate DJ1, ball electrode DJ2, electrode needle DJ3 symmetry electrode head; In cabinet shell one arranged outside the back up pad 8 of charged cartridge is arranged, back up pad 8 is inserted and is worn cabinet shells and embed box insides, and the electrode tip holder 9 on the back up pad 8 is connected with the alternating current zero line of box inside; The input end of the magnetic board 2 of said connection capacitor C is connected with alternating current fire wire K switch 1 through the stepless pressure regulation circuit; Output terminal is accompanied by the batch (-type) adhesive action of the electromagnet DC1 that has coil, electromagnet DC2, electromagnet DC3, respectively with back up pad 8 on symmetry electrode head upper electrode end in contact be connected.
Said back up pad 8 comprises first back up pad, second back up pad that has symmetry electrode ball DJ2 that has symmetry electrode plate DJ1, the 3rd back up pad that has symmetry electrode pin DJ3; Back up pad 8 is the insulcretes that have some hollow holes, has electrode tip holder 9 to be connected with symmetry electrode head lower electrode end on it.
The said electromagnet DC that has coil is that the coil on electromagnet DC1, electromagnet DC2, the electromagnet DC3 is connected with node J1-1, J2-1, J3-1, the J4-1 of relay respectively, controlled by the control signal of telepilot output.
Said stepless pressure regulation circuit constitutes the RC oscillatory circuit by controllable silicon SCR, potentiometer W2, resistance R 3 with capacitor C 4, and oscillation frequency is given the SCR control utmost point through bilateral diode D5, forms conduction angle, control controllable silicon negative electrode output voltage.
The key technical indexes:
Voltage: alternating current 220V ± 5 ﹪;
Temperature :-20 ℃～60 ℃;
Humidity :≤80 ﹪;
Vibration (discharge) frequency: 3Hz;
Instrument size: 150 * 120 * 100 mm;
Weight: 1kg.
Compare with prior art, the present invention has outstanding advantage and significant beneficial effect:
1, damage equipment and fault analysis and judgement reason and the difficulty of taking the necessary measures are big easily in the high voltage lifting test at the scene to the invention solves shelf depreciation inspection detection instrument, and the test action is big, the dangerous big problem that exists that waits.
2, the present invention not only can make monitoring debugging usefulness in the laboratory; Also can do the simulation test of detecting instrument earlier in working site and manufacturer, treat normal after, drop into substantive high-potting again; Reduce tens thousand of volt high voltages thus the blindness of electrical equipment is applied, reduce the equipment damage rate.
3, the structural design of the present invention has the photoelectricity of being convenient to and discharges characteristics such as propagation and maintain and replace, makes it to produce strong and weak different, the different electric spark of light spoke pulse, and the test of being convenient to the shelf depreciation detection instrument is compared.
4, the utilization of self-sustained oscillation and remote control circuit can alleviate when testing to stimulation and the injury of human organ with the spirit sensation staff away from discharge place operation.
5, the battery lead plate that adopts among the present invention, ball electrode, three kinds of versions of electrode needle; Can discharge the signal that the photoelectricity power differs in not only controling; And the light wave pulse that produces also is not quite similar; This provides wideer more metrical information to being provided with the shelf depreciation detection instrument of spectral analysis and high-frequency test function.
Description of drawings
Fig. 1 is a prior art mesohigh cabinet shelf depreciation simulation test synoptic diagram.
Fig. 2 is a distance type shelf depreciation photoelectricity maker structural representation of the present invention.
Fig. 3 is a distance type shelf depreciation photoelectricity generator circuit principle schematic of the present invention.
Fig. 4, Fig. 4-A are remote-control transmitting according to the invention, receiver partial schematic diagram.
Fig. 5 is that the present invention uses the embodiment synoptic diagram.
Numeral and letter representation among the figure: 1: high-potting cabinet; DC: electromagnet; 2: magnetic board; C: capacitor; 4: spring base; DJ1: battery lead plate; DJ2: ball electrode; DJ3: electrode needle; 8: back up pad; 9: electrode tip holder; 10: shelf depreciation photoelectricity maker; 11: supporting seat; 12: electric spark; 13: the photodetection appearance; 14: cable; 15: telepilot or manipulater; 16: keyswitch; 17: safe fence; 18: the up-down control desk; 20: the test sparking electrode.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is done further explain.The specific embodiment that the present invention describes is only in order to explaining the present invention, and is not used in qualification the present invention.
At first referring to Fig. 1, the prior art means are to the scene or local simulated experiment of discharging is done by high-voltage board factory.As shown in Figure 1, this test method is: on the exposed bodies such as disconnecting link contact in 35kV or 110 kV high-voltage boards 1, twining is to place two metalworks, forms test sparking electrode 20; The optimum position of selecting detector 13 to gather photosignal through test cable 14, is regulated the tens thousand of volt voltages that raise with buck control desk 18 and is given test sparking electrode 20, makes it discharge, sends electric spark.Because be to make high-potting, thus must install fence 17 on every side additional and special messenger's monitoring etc. is set, at full stretch serious.
Can know from Fig. 2; Distance type shelf depreciation photoelectricity maker according to the invention; Comprise a casing, electrode tip; Casing inner casing bottom is provided with supporting seat 11, and supporting seat 11 is provided with the electromagnet DC that has coil, and the electromagnet DC that has coil comprises electromagnet DC1, electromagnet DC2, electromagnet DC3; The top is provided with spring base 4 in the casing, and spring base 4 links together with the magnetic board 2 of charged container C, and the back up pad 8 of charged cartridge is arranged in cabinet shell one arranged outside; Back up pad 8 is inserted and is worn cabinet shell embedding box inside, and the electrode tip holder 9 on the back up pad 8 is connected with the alternating current zero line of box inside; The input end of the magnetic board 2 of said charged container C is connected with alternating current fire wire K switch 1 through the stepless pressure regulation circuit; Output terminal is accompanied by the batch (-type) adhesive action of the electromagnet DC1 that has coil, electromagnet DC2, electromagnet DC3, respectively with back up pad 8 on the contact of symmetry electrode head upper end electrode be connected.Said back up pad 8 comprises first back up pad, second back up pad that has symmetry electrode ball DJ2 that has symmetry electrode plate DJ1, the 3rd back up pad that has symmetry electrode pin DJ3.Back up pad 8 is the insulcretes that have some hollow holes, is convenient to light wave and penetrates, and helps being arranged on the photodetector sampling of below; There is electrode tip holder 9 to be connected on its back up pad 8 with symmetry electrode head lower electrode end.Its structure working principle is, electromagnet DC receives the operation start signal of telepilot, produces the suction-combining force, and magnetic board 2 overcomes the pulling force of spring 4, presses down rapidly, connects the 220V alternating current fire wire that comes through the capacitor C transmission, and passes to electrode tip.Electrode tip comprises the symmetry electrode head of battery lead plate DJ1, ball electrode DJ2, electrode needle DJ3; The electrode tip upper end electrode presses down; The electrode tip lower end that will symmetrical percussion be connected to zero line; And produce electric spark 12, be full of ultraviolet light and high-frequency signal in the electric spark, processing such as these signals receive through photoelectric commutator or photodetection appearance and compare, amplification.Described capacitor C is in circuit middle finger capacitor C of the present invention 5, capacitor C 6, capacitor C 7.Present embodiment has been chosen 0.1 μ f, 0.33 μ f, 0.47 μ f, and equal withstand voltage electric capacity of 400V is serially connected in the front of battery lead plate, ball electrode, electrode needle, promptly plays the security protection effect, carries out the discharge preparation for the percussion friction again.
Fig. 3, Fig. 4 know, the coil that has on the electromagnet DC of coil is that electromagnet DC1, electromagnet DC2, electromagnet DC3 are connected with node J1-1, J2-1, J3-1, the J4-1 of relay respectively, controlled by the control signal of telepilot output.To ensure and raising test effect in order tightening security, to avoid artificial contact percussion, design this remote control mode.Owing to be in 10 meters scopes, to work, so general emission, receiver can both satisfy required distance.For this reason, selected LM-C type transmitter and RM1104B receiver as telechiric device.Receiver RM1104B design is in described shelf depreciation photoelectricity maker 10.
The characteristics of this telechiric device are: transmitter has four operating keys; After receiver was handled through decoding, frequency division, four control signals of corresponding output started four relays of J1-4; Each relay has common port, often opens, three pin of normally closed node, and four relay synthetics form 12 connection terminals.According to the structure of battery lead plate DJ1, ball electrode DJ2, three groups of electrode tips of electrode needle DJ3, J2, J3, J4 three group relay auxiliary works have been selected emphatically for use.For example: press 3 keys when telepilot, receiver is received signal, starting relay J3 after the conversion process; It is closed often to open node J3-1; Connect vibration relay J 1 and often open the stroboscopic signal that node J1-1 sends here, make the 5V positive supply off and on, and then the same frequency of control electromagnet DC2 opens, breaks.Combine Fig. 3 visible again, the coil on the electromagnet DC is because of galvanic disconnected, continuous admittance, and with step adhesive magnetic board 2, magnetic board 2 forms vibration under the potential energy of spring 4 cooperates, and the alternating current that controllable silicon is sent here through capacitor C 6 conducts to ball electrode DJ2.DJ2 ball percussion in same frequency up and down gushes out electric spark, reaches purpose of design.Other battery lead plate DJ1, electrode needle DJ3 principle of work are identical, so do not give unnecessary details.
Circuit working principle process of the present invention is following:
Hand over straight power supply: another road of 220V alternating current through transformer B be depressured to 7.5V, the rectifier bridge that constitutes through diode D1-4 again adjusts interchange and is direct current; Through capacitor C 1 filtering, three terminal regulator WY voltage is stabilized to direct current 5V again, offer oscillator and telepilot again respectively and do the use of work power supply.
Stepless pressure regulation: the 220V alternating current is by K switch 1 control, and when K1 pressed, alternating current inserted, and after the 2A insurance, divides duplex feeding.One the tunnel send the controllable silicon SCR anode; Potentiometer W2 resistance R 3 constitutes the RC oscillatory circuit with capacitor C 4; Oscillation frequency is given the SCR control utmost point through bilateral diode D5, forms conduction angle, control controllable silicon negative electrode output voltage; This voltage sends the electrode tip device to through capacitor C 5, C6, C7 again, carries out discharge and prepares.Stepless pressure regulation not only solves voltage regulation problem, also reduces volume, weight, forms portable.
Oscillatory circuit: what specifically adopt is the multi-harmonic self-excited oscillation circuit among Fig. 3; This circuit is fit to low-frequency oscillation, and we select oscillation frequency is 3Hz, and the 3Hz vibration has realized intermittent discharge preferably and arcing light; Three to 4 percussions are promptly arranged a second approximately; This is because slow again, has only moment Mars, is difficult to continuously; Fast again, then circuit is equivalent to adhesion, does not have arc light on the contrary, so done comparatively moderate design.If needing other frequency to regulate through duplex potentiometer W1 changes.After oscillation frequency produced, light emitting diode was bright with stroboscopic, and also start and stop are staggered thereupon for relay J 1, and its node J1-1 is serially connected in the magnet spool circuit, and the percussion of control electrode head device makes it to produce the electric spark that flashes.Can know according to test; In the 220V alternating current, adopt the percussion mode can produce electric spark, though the artificial hand-held metalwork of such mode can be accomplished; But almost be on live wire, zero line, to stir; So be absolutely unsafe, and crack explosive sound and dazzling electric flame are arranged, human organ is all had with the spirit sensation to stimulate and injury; There is human body to block during manual operation in addition, can forms the instrument sampling and hinder, so should not take.For this reason, the vibration and the remote control circuit of the present invention's design make it automatic percussion, and the staff can operate away from discharge place.
Fig. 5 is the embodiment that the present invention cooperates the partial discharge monitoring appearance to do experiment at the scene.With Fig. 1 close part is arranged referring to Fig. 5 is visible; But we can notice; In high-voltage board 1, do experiment equally, the test sparking electrode 20 that Fig. 1 Central Plains is wrapped on the disconnecting link contact has been replaced as shelf depreciation photoelectricity maker 10 according to the invention, and the position of shelf depreciation detector 13 there is not change.Settings such as cable 14, safe fence 17, up-down control desk 18 are cancelled.After placing this photoelectricity maker 10 and shelf depreciation detection instrument 13, probe temperature, humidity etc. all satisfy under the condition of work again, can carry out the Partial Discharge Detection test.
Connect the 220V AC power, press K switch 1, pilot lamp is bright, gets into duty.Subsequently; We can or more suitably locally operate telepilot or manipulater 15 at several meters; Push key 16 2., 3., 4. in any key, corresponding pilot lamp is lighted, and is inner through conversion and control; The contact of will vibrating respectively of required battery lead plate or ball electrode or electrode needle produces the electric spark of varying strength and spectrum frequency range; Because of each branch road is a parallel connection relation, so even can press simultaneously by several keys, the discharge spark that generation is stronger all supplies shelf depreciation detection instrument 13 as signals collecting and value juggling.
After shelf depreciation detection instrument 13 is received photoelectricity and frequency signal, will make test and show reaction, show in proper working orderly, can change the high pressure working condition tests over to.On the basis of doing preliminary examination, test subsequently will fast, accurately, reliably be accomplished the practicality examination checking to the shelf depreciation detection instrument.After simulation test confirms that the shelf depreciation detection instrument is in proper working order, can let its input scene do online monitoring and use.
Claims (5)
1. distance type shelf depreciation photoelectricity maker; Comprise a casing, electrode tip; It is characterized in that; Casing inner casing bottom is provided with supporting seat (11), and supporting seat (11) is provided with the electromagnet DC that has coil, and said electromagnet DC comprises electromagnet DC1, electromagnet DC2, electromagnet DC3; The top is provided with spring base (4) in the casing, and spring base (4) links together with the magnetic board (2) of charged container C, and said electrode tip comprises the symmetry electrode head of battery lead plate DJ1, ball electrode DJ2, electrode needle DJ3; In cabinet shell one arranged outside the back up pad (8) of charged cartridge is arranged, back up pad (8) is inserted and is worn cabinet shell and embed box inside, and the electrode tip holder (9) on the back up pad (8) is connected with the alternating current zero line of box inside; The input end of the magnetic board (2) of said connection capacitor C is connected with alternating current fire wire K switch 1 through the stepless pressure regulation circuit; Output terminal is accompanied by the batch (-type) adhesive action of the electromagnet DC1 that has coil, electromagnet DC2, electromagnet DC3, goes up symmetry electrode head upper electrode end in contact with back up pad (8) respectively and is connected.
2. distance type shelf depreciation photoelectricity maker according to claim 1; It is characterized in that said back up pad (8) comprises first back up pad, second back up pad that has symmetry electrode ball DJ2 that has symmetry electrode plate DJ1, the 3rd back up pad that has symmetry electrode pin DJ3.
3. distance type shelf depreciation photoelectricity maker according to claim 2 is characterized in that said back up pad (8) is the insulcrete that has some hollow holes, has electrode tip holder (9) to be connected with symmetry electrode head lower electrode end on it.
4. distance type shelf depreciation photoelectricity maker according to claim 1; It is characterized in that; The said electromagnet DC that has coil is that the coil on electromagnet DC1, electromagnet DC2, the electromagnet DC3 is connected with node J1-1, J2-1, J3-1, the J4-1 of relay respectively, controlled by the control signal of telepilot output.
5. distance type shelf depreciation photoelectricity maker according to claim 1; It is characterized in that; Said stepless pressure regulation circuit constitutes the RC oscillatory circuit by controllable silicon SCR, potentiometer W2, resistance R 3 with capacitor C 4; Oscillation frequency is given the SCR control utmost point through bilateral diode D5, forms conduction angle, control controllable silicon negative electrode output voltage.
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| CN2012103032753A CN102819003A (en) | 2012-08-23 | 2012-08-23 | Remote-control partial discharge photoelectric generator |
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| CN2012103032753A CN102819003A (en) | 2012-08-23 | 2012-08-23 | Remote-control partial discharge photoelectric generator |
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Citations (7)
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| US20100295555A1 (en) * | 2007-12-10 | 2010-11-25 | Mtronix Precision Measuring Instruments Gmbh | Apparatus and method for generating a defined charge pulse for carrying out a partial discharge measurement |
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| CN202177684U (en) * | 2011-08-12 | 2012-03-28 | 上海市电力公司 | Multi-type partial discharge simulating apparatus for gas-insulated metal-enclosed device |
| CN202854313U (en) * | 2012-08-23 | 2013-04-03 | 四川省电力公司泸州电业局 | Remote control type partial discharge photoelectric generator |
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2012
- 2012-08-23 CN CN2012103032753A patent/CN102819003A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07167909A (en) * | 1993-12-15 | 1995-07-04 | Meidensha Corp | Discharge generating device |
| US20100295555A1 (en) * | 2007-12-10 | 2010-11-25 | Mtronix Precision Measuring Instruments Gmbh | Apparatus and method for generating a defined charge pulse for carrying out a partial discharge measurement |
| CN201569449U (en) * | 2009-09-22 | 2010-09-01 | 科隆测量技术(上海)有限公司 | Electrode structure on high-voltage pipeline |
| CN201536449U (en) * | 2009-09-30 | 2010-07-28 | 东莞安尚崇光科技有限公司 | Drive circuit of non-polar light-modulating energy-saving lamp |
| CN102163805A (en) * | 2010-12-23 | 2011-08-24 | 中国人民解放军理工大学 | Remote high-voltage pulse nanosecond switch applying insulating oil |
| CN202177684U (en) * | 2011-08-12 | 2012-03-28 | 上海市电力公司 | Multi-type partial discharge simulating apparatus for gas-insulated metal-enclosed device |
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Non-Patent Citations (1)
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Application publication date: 20121212 |