CN203405542U - System for detecting dry type air reactor turn-to-turn insulation defects - Google Patents
System for detecting dry type air reactor turn-to-turn insulation defects Download PDFInfo
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- CN203405542U CN203405542U CN201320323160.0U CN201320323160U CN203405542U CN 203405542 U CN203405542 U CN 203405542U CN 201320323160 U CN201320323160 U CN 201320323160U CN 203405542 U CN203405542 U CN 203405542U
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Abstract
A system for detecting dry type air reactor turn-to-turn insulation defects comprises a power supply, a current-limiting resistor R, a capacitor C, a high-voltage electronic switch control circuit, a high-voltage electronic switch D, a capacitive voltage divider and a waveform detection device. In the detection process, the power supply, the current-limiting resistor R, the capacitor C and an electric reactor Lx to be detected are connected in series to form a closed circuit, the capacitive voltage divider and the electric reactor Lx to be detected are connected in parallel, the waveform detection device and a low-voltage arm capacitor CL of the capacitive voltage divider are connected in parallel, and a series branch which is formed by the capacitor C and the electric reactor Lx to be detected is connected with the high-voltage electronic switch D in parallel; and switching on and switching off of the high-voltage electronic switch are controlled by the high-voltage electronic switch, so that intermittent discharge of the capacitor C can be conducted on the electric reactor Lx to be detected, a high-frequency oscillating voltage is generated in the electric reactor Lx to be detected, and an output waveform of the electric reactor Lx to be detected is detected by the waveform detection device, so that whether turn-to-turn insulation defects exist in the electric reactor Lx to be detected or not can be judged. According to the system for detecting dry type air reactor turn-to-turn insulation defects, control can be accurately conducted, the electromagnetic interference is little, and effective detection can be conducted on the dry type air reactor turn-to-turn insulation defects.
Description
Technical field
The utility model relates to a kind of detection system of inter-turn insulation defect of dry hollow reactor.
Background technology
Reactor is comprised of a plurality of coaxial windings in parallel, and each winding in parallel is in parallel electric.Each winding in parallel needs coiling multilayer to form by many copper cash in parallel or aluminum steel according to design again, on every wire, is surrounded by mylar as turn-to-turn insulation.The outside glass fiber winding by epoxy resin-impregnated of winding in parallel, tightly seal, and through hot setting, form one there is fine globality seal 3, as shown in Figure 1, respectively seal 3 and separate by glass fiber pulling bar 1, form the air flue that dispels the heat.Adopt wiring arm 2 as the outlet link of winding in parallel, the arm of wiring up and down 2 of winding in parallel, by drawing yarn mode to fix, forms an integral body.
Electrical network statistics shows, it is because of due to inter-turn insulation defect that dry-type air-core reactor has 90% accident.The detection of inter-turn insulation defect of dry hollow reactor mainly completes by pulse oscillating voltage test.Yet the detection to inter-turn insulation defect of dry hollow reactor at present, still in experience accumulation and perfect stage.This is because pulse oscillating voltage test equipment before, is all to adopt traditional ball-gap discharge form that pulse oscillating voltage is applied on reactor.And ball-gap discharge cannot accurately be controlled, and the electromagnetic wave of discharge generation is very large to the sampling interference of test waveform, can affect sampling and the identification of experimental waveform.If adopt common electronic switch to complete the connection of test loop and block to produce pulse oscillating voltage, common electronic switch is difficult to bear the high voltage of reactor pulse oscillating test.
So, complete the connection in high voltage pulse foam stability loop and block, must work out special high-pressure electronic switch: the high voltage (the trial voltage grade of 10kV reactor is 70kV, and the trial voltage grade of 35kV reactor is 160kV) of to bear reactor test; Want to bear the pulse current that reaches 500A; Requiring the connection of high-pressure electronic switch simultaneously and block must be synchronous, can be accurately controlled.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of detection system of inter-turn insulation defect of dry hollow reactor, utilizes this system effectively to detect inter-turn insulation defect of dry hollow reactor.
For solving the problems of the technologies described above, the technical scheme that the utility model is taked is as follows: a kind of detection system of inter-turn insulation defect of dry hollow reactor, comprise power supply, current-limiting resistance R, capacitor C, high-pressure electronic ON-OFF control circuit, high-pressure electronic switch D, capacitive divider and Wave form detector, high-pressure electronic ON-OFF control circuit is connected with high-pressure electronic switch D, the break-make of controlling high-pressure electronic switch, capacitive divider has high-voltage arm capacitor C H and low-voltage arm capacitor C L;
During detection, described power supply, current-limiting resistance R, capacitor C and reactor Lx to be measured are composed in series closed-loop path, capacitive divider is in parallel with reactor Lx to be measured, Wave form detector is in parallel with the low-voltage arm capacitor C L of capacitive divider, and high-pressure electronic switch D is in parallel with the series arm that described capacitor C and reactor Lx to be measured form;
When high-pressure electronic switch D disconnects, power supply charges to capacitor C, and after high-pressure electronic switch D closure, capacitor C and reactor Lx to be measured form resonant tank; The break-make that high-pressure electronic ON-OFF control circuit is controlled high-pressure electronic switch makes capacitor C carry out intermittent discharge to reactor Lx to be measured, on reactor Lx to be measured, produce high-frequency impulse oscillating voltage, Wave form detector detects the output waveform of reactor Lx to be measured, judges whether reactor Lx to be measured exists inter-turn insulation defect.
For the reactor Lx to be measured that has inter-turn insulation defect, under the effect of high-frequency impulse oscillating voltage, can make turn-to-turn form and puncture, the output waveform that detects reactor Lx can judge the situation of turn-to-turn insulation.
The high-capacity direct current high pressure generator of described power supply for adopting intermediate frequency multiplication of voltage mode to export.
The embodiment of recommending as the utility model, described high-pressure electronic switch D consists of controllable silicon in serial connection valve group, and controllable silicon in serial connection valve group is in series by a plurality of thyristor valves
,each thyristor valve is composed in parallel by controllable silicon, fly-wheel diode and equalizing resistance three, and in described thyristor valve
,described controllable silicon is oppositely connected with fly-wheel diode; Described high-pressure electronic ON-OFF control circuit is the driving circuit of thyristor valve described in each.
Described in each, the driving circuit of thyristor valve comprises isolation drive power supply, controllable silicon drive plate and the first Optical Fiber Transmission part, the first Optical Fiber Transmission partly comprises connected successively fiber optic emitter, optical fiber and fiber optic receiver, described in each, the fiber optic emitter of thyristor valve driving circuit is triggered by same signal source, described in each Optical Fiber Transmission of thyristor valve driving circuit part lock in time difference in 100nS, the isolation drive power supply of each thyristor valve driving circuit is connected with fiber optic receiver with its controllable silicon drive plate, the signal output part of the fiber optic receiver of each thyristor valve driving circuit is connected with the signal input part of its controllable silicon drive plate, controllable silicon drive plate receives the trigger pip of fiber optic receiver transmission and controls controlled silicon conducting or the cut-off in corresponding thyristor valve.
Described detection system also comprises system, control circuit and current foldback circuit; described system, control circuit is controlled the generation of described signal source signal; described current foldback circuit comprises current transformer and the second Optical Fiber Transmission part; the variation of current transformer detection high-pressure electronic switch D low pressure end current signal is also given described system, control circuit by described the second Optical Fiber Transmission partial feedback, and system, control circuit completes the described signal source output protection signal of judgement control and makes the controllable silicon cut-off in each thyristor valve.
As preferred embodiment of the present utility model, described detection system also comprises a high-pressure multi-path output isolation drive power supply, and described high-pressure multi-path output isolation drive power supply Yi road output forms the isolation drive power supply of a thyristor valve driving circuit, described high-pressure multi-path output isolation drive power supply comprises successively connected direct supply Uin, full bridge inverter and filtering circuit, also comprise high-tension cable and a plurality of current transformer, described current transformer has toroidal core, full bridge inverter is connected with described system, control circuit, under controlling, system, control circuit completes direct current to the conversion exchanging, filtering circuit filtering Resonance Wave Composition is to obtain the alternating current needing, described high-tension cable is linked to be loop by the output of filtering circuit, the toroidal core of described current transformer is passed by described high-tension cable as the primary coil inside of current transformer, the output of the secondary coil of described current transformer is through rectification, filtering, after voltage stabilizing, form the isolation drive power supply of thyristor valve driving circuit.
As preferred implementation of the present utility model, the thyristor valve in described controllable silicon in serial connection valve group is layered arrangement, every layer all level be provided with for improving the heat sink of thyristor valve heat radiation, described thyristor valve is fixed on heat sink.Because immediate current of the present utility model can reach hundreds of amperes, said structure can not only improve radiating effect of the present utility model, and is conducive to strengthen reliability, the fastness of controllable silicon in serial connection valve block structure.
The utlity model has following beneficial effect:
(1) in the utility model, utilize high-pressure electronic switch complete the connection of test loop and block, to produce reactor, carry out the needed high-frequency impulse oscillating voltage of pulse oscillating voltage test, high-pressure electronic switch is convenient to accurate control on the one hand, (ball-gap discharge voltage has dispersiveness to be conducive to improve the intelligent degree of inter-turn insulation defect of dry hollow reactor detection system, the connection of high-pressure electronic switch and block and can accurately control, can realize sequencing controls), on the other hand, because the utility model is not to adopt ball-gap discharge form that high-frequency impulse is shaken to voltage to be applied on reactor, there is no electrical discharge arc, so the electromagnetic wave producing greatly reduces, the interference of experimental waveform is also reduced greatly, can in process of the test, record the process that turn-to-turn insulation punctures, be conducive to analysis and the judgement of nature of trouble, to the analysis of defect level and character, by being conducive to, instruct reactor in the improvement of configuration aspects, design aspect perfect, thereby reduce the accident rate of dry-type air-core reactor, improve its operational reliability, be conducive in a word promote the development and progress of dry-type air-core reactor,
(2) the utility model adopts the thyristor valve of series connection as its high-pressure electronic switch, can not only bear high pressure, and is connected in series easy to usely, is beneficial to accurate control, driving circuit employing difference lock in time of the utility model thyristor valve is partly transmitted driving signal at 100nS with interior Optical Fiber Transmission, and the driving signal that Optical Fiber Transmission is partly transmitted is triggered by same signal source, be conducive to make the turn-on and turn-off of each thyristor valve in controllable silicon in serial connection valve group to keep good consistance, prevent due to the not conducting or conducting is inconsistent causes other thyristor valve in controllable silicon in serial connection valve group to bear too high voltages and breakdown of indivedual thyristor valves, thereby cause whole controllable silicon in serial connection valve group to be damaged, in controllable silicon in serial connection valve group, each thyristor valve keeps good turn-on and turn-off consistance, be conducive to extend the serviceable life of controllable silicon in serial connection valve group, in addition, the utility model adopts Optical Fiber Transmission partly to transmit driving signal, good insulating, is difficult for being disturbed, the utility model arranges current foldback circuit, when there is overcurrent fault, can rapid feedback to system, control circuit, thereby cut off the output of all thyristor valves, further protect controllable silicon in serial connection valve group of the present utility model, thereby guaranteed detection system safe and reliable operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing dry-type air-core reactor;
Fig. 2 is circuit theory diagrams of the present utility model;
Fig. 3 is the high-pressure electronic switch of the utility model preferred embodiment and the main circuit structural representation of driving circuit and holding circuit thereof;
Fig. 4 is the circuit theory diagrams of the high-pressure multi-path output isolation drive power supply major loop of the utility model preferred embodiment;
Fig. 5 is that the high-pressure multi-path of the utility model preferred embodiment is exported the whole theory diagrams such as isolation drive power supply, optical fiber driving, protection;
Fig. 6 is the circuit theory diagrams of the trigger circuit that triggered by same signal source of the fiber optic emitter of the utility model preferred embodiment;
When Fig. 7 is illustrated in dry-type air-core reactor and does not have inter-turn insulation defect, the current oscillation waveform of reactor output;
When Fig. 8 is illustrated in dry-type air-core reactor turn-to-turn insulation defectiveness, the current oscillation waveform of reactor output.
Embodiment
Below in conjunction with specific embodiment of the utility model and accompanying drawing, the utility model is further described.
As shown in Figure 2, the detection system of inter-turn insulation defect of dry hollow reactor of the present utility model comprises power supply, current-limiting resistance R, capacitor C, high-pressure electronic ON-OFF control circuit (not shown), high-pressure electronic switch D, has capacitive divider and the Wave form detector (not shown) of high-voltage arm capacitor C H and low-voltage arm capacitor C L.In the present embodiment, the high-capacity direct current high pressure generator DC of power supply for adopting intermediate frequency multiplication of voltage mode to export.During detection, high-capacity direct current high pressure generator DC, current-limiting resistance R, capacitor C and reactor Lx to be measured are composed in series closed-loop path, capacitive divider is in parallel with reactor Lx to be measured, Wave form detector is in parallel with the low-voltage arm capacitor C L of capacitive divider, and high-pressure electronic switch D is in parallel with the series arm that capacitor C and reactor Lx to be measured form.
The function that the circuit that the utility model is shown is realized is that high-frequency impulse oscillating voltage is applied on dry-type air-core reactor Lx to be measured, the high-frequency impulse oscillating voltage frequency being applied on dry-type air-core reactor Lx to be measured should be below 100kHz, and voltage magnitude is according to related request regulation (GBT 1094.6-2011 power transformer the 6th part: reactor) arrange.
High-pressure electronic ON-OFF control circuit is connected with high-pressure electronic switch D, control the break-make of high-pressure electronic switch, when high-pressure electronic switch D disconnects, high-capacity direct current high pressure generator DC charges to capacitor C, after high-pressure electronic switch D closure, capacitor C and reactor Lx to be measured form resonant tank, and high-pressure electronic ON-OFF control circuit is by controlling high-pressure electronic switch on and off, make capacitor C carry out intermittent discharge to reactor Lx to be measured, thereby produce high-frequency impulse oscillating voltage on reactor Lx to be measured.Utilize Wave form detector to detect the output waveform of reactor Lx to be measured, can judge whether reactor Lx to be measured exists inter-turn insulation defect.
specific as follows:
At dry-type air-core reactor, do not have inter-turn insulation defect, the current oscillation waveform of output as shown in Figure 7; When turn-to-turn insulation defectiveness, the current oscillation waveform of output as shown in Figure 8.
By relatively finding out, reactor its current oscillation waveform attenuating when without inter-turn insulation defect is slow, and amplitude attenuation is about 0.6s to 5% time; When having inter-turn insulation defect, to decay very fast, amplitude attenuation is about 20ms to 5% time.Result also shows, the current oscillation frequency of sealing that has an inter-turn insulation defect is large than without inter-turn insulation defect obviously.These difference, also draw analysis in the record of turn-to-turn insulation breakdown process in process of the test just.
Above-mentioned reactor inter-turn insulation defect is to carry out the in the situation that of the dead short of supposition insulation defect circle, in practice, insulation defect circle is not dead short under many circumstances, only have when the circle electromotive force of reactor insulate over defect the voltage can bear, just can cause puncturing of fault location insulation and form short-circuited conducting sleeve, so when actual inter-turn insulation defect detects, the amplitude of the voltage applying on reactor must reach certain requirement, and the detection frequency of the pick-up unit of detection system is at least greater than 100MS/S, could differentiate small frequency change.
As shown in Figure 3, high-pressure electronic switch D consists of controllable silicon in serial connection valve group, controllable silicon in serial connection valve group is in series by a plurality of thyristor valves, each thyristor valve is composed in parallel by controllable silicon SCR, fly-wheel diode and equalizing resistance three, and in thyristor valve, controllable silicon SCR is oppositely connected with fly-wheel diode.Because each thyristor valve is withstand voltage in 6500V left and right in controllable silicon in serial connection valve group, the trial voltage grade of the pulse oscillating voltage test of 10kV reactor is 70kV, consider security, we are withstand voltage for 6000V calculates by each thyristor valve, select 12 thyristor valve series connection.The effect of equalizing resistance is to guarantee that in controllable silicon in serial connection valve group, the voltage on each thyristor valve is consistent.
The utility model adopts controllable silicon to form high-pressure electronic switch of the present utility model, on the one hand because its control is convenient, have electric current, voltage control capability compared with broad range, its rated current can be from several milliamperes to more than 5000A, and rated voltage can surpass 10000V.Although the operating voltage of other element such as IGBT also can be accomplished 6000V at present, it is unfavorable for serial connection use.
Fig. 4 is the circuit theory diagrams of the high-pressure multi-path output isolation drive power supply major loop of the present embodiment, as shown in the figure, high-pressure multi-path output isolation drive power supply comprises direct supply Uin, full bridge inverter and filtering circuit, the direct supply Uin of the present embodiment can be obtained through DC converting by 22OV alternating current, filtering circuit adopts LC series resonant circuit, and the two ends of capacitor C are as the output of LC series resonant circuit.High-pressure multi-path output isolation drive power supply also comprises the current transformer TC of high-tension cable and a plurality of toroidal cores that have.Full bridge inverter completes direct current to the conversion exchanging, and LC series resonant circuit filtering Resonance Wave Composition has the alternating current of output and approaches sinusoidal wave waveform.High-tension cable line is linked to be loop by the output of LC series resonant circuit, the toroidal core of current transformer TC is as the primary coil of current transformer TC, inner by high-tension cable line, passed, the output of the secondary coil of current transformer after rectification, filtering, voltage stabilizing as the isolation drive power supply of the driving circuit of a thyristor valve in controllable silicon in serial connection valve group.In Fig. 4, the primary coil of current transformer is enclosed within the way to take power of obtaining required electric current on bus and has also played buffer action simultaneously.
In order to make toroidal core and its secondary voltage stabilizing part miniaturization of current transformer TC, require the frequency of operation of full bridge inverter as far as possible high, so select High-frequency MOSFET transistor as the switching tube in its full bridge inverter in the present embodiment, its control end---grid is connected with system, control circuit (will tell about below), and its output frequency is 60kHz.
High-pressure electronic ON-OFF control circuit is the driving circuit of each thyristor valve, and the output terminal of the driving circuit of each thyristor valve is connected with the silicon controlled control end in each thyristor valve.As shown in Fig. 3,5, the driving circuit of thyristor valve comprises isolation drive power supply (as previously mentioned), controllable silicon drive plate and the first Optical Fiber Transmission part, and the first Optical Fiber Transmission partly comprises connected successively fiber optic emitter, optical fiber Fibre1 and fiber optic receiver.In the present embodiment, adopt LED as its fiber optic emitter.The isolation drive power supply of each thyristor valve driving circuit is connected with fiber optic receiver with its controllable silicon drive plate, for described controllable silicon drive plate and fiber optic receiver power supply, the signal output part of the fiber optic receiver of each thyristor valve driving circuit is connected with the signal input part of its controllable silicon drive plate, and controllable silicon drive plate receives the trigger pip of fiber optic receiver transmission and controls controlled silicon conducting or the cut-off in corresponding thyristor valve.
Difference lock in time of the Optical Fiber Transmission part of each thyristor valve driving circuit requires, in 100nS, specifically can select in the following way each assembly of Optical Fiber Transmission part.
Adopt same fiber optic emitter, same optical fiber, selects fiber optic receiver, guarantees to be less than 500ns the time delay that each signal receives, and selects the fiber optic receiver that is less than 50ns lock in time.Use the same method to select fiber optic emitter and optical fiber again, guarantee that the length of every optical fiber is consistent, the optical fiber of the present embodiment is selected the HFBR-0400 of Agilent.After each assembly of select Optical Fiber Transmission part, accessed the driving circuit of thyristor valve, the synchronism of available hyperchannel oscillograph detection fiber hop, makes driving difference lock in time of each thyristor valve be less than 50ns.
The fiber optic emitter of each thyristor valve driving circuit is triggered by same signal source, and its trigger circuit as shown in Figure 7.Because the controllable silicon in serial connection valve group of the present embodiment is composed in series by 12 thyristor valves, so to there being 12 LEDs, as figure numbering 1 ~ 12.12 LEDs form two series arms, and every series arm is composed in series by 6 identical LEDs of conducting direction.The positive pole of two series arms is all connected with+15 power supply, negative pole is connected with the drain electrode of transistor Q1 with R22 by the identical resistance R 9 of two resistances respectively, the source ground of transistor Q1, the grid of transistor Q1, by resistance R 8 ground connection, is connected with the output terminal of signal source by resistance R 7 simultaneously.This signal source is pulse signal source.
As shown in Figure 5, detection system also comprises system, control circuit and current foldback circuit, and system, control circuit is controlled the generation of above-mentioned pulse signal source signal.As shown in Figure 3, current foldback circuit comprises Current Transmit and the second Optical Fiber Transmission part OFT, and the second Optical Fiber Transmission part OFT is identical with above-mentioned the first Optical Fiber Transmission part-structure.Current Transmit detects the variation of high-pressure electronic switch D low pressure end L current signal and feeds back to system, control circuit by the second Optical Fiber Transmission part OFT, and system, control circuit completes judgement control signal source output protection signal and makes the controllable silicon cut-off in each thyristor valve.
Thyristor valve in the utility model controllable silicon in serial connection valve group is layered arrangement, every layer all level be provided with for improving the heat sink of thyristor valve heat radiation, thyristor valve is fixed on heat sink.Because immediate current of the present utility model can reach hundreds of amperes, said structure can not only improve radiating effect of the present utility model, and is conducive to improve reliability, the fastness of controllable silicon in serial connection valve block structure.Equalizing resistance all adopts high-power high voltage resistance, guarantees that real power is at below 20% of resistance rated power.
The design of the utility model high-pressure electronic switch D, has following points for attention: 1) high-pressure electronic switch D need to bear the high-voltage impact of 2*160kV, and its withstand voltage properties must be enough: the utility model adopts a plurality of controllable silicon in serial connection dividing potential drops to address the above problem; 2) high-pressure electronic switch D is in series by a plurality of elements, the voltage that each element bears distributes must be balanced, otherwise there will be punch-through one by one: the utility model solves the problems referred to above by the means such as synchronism that equalizing resistance are set, make all silicon controlleds drive signal to trigger, control each Optical Fiber Transmission part by same signal source; 3) high-pressure electronic switch D must have enough discharge capacities, good heat dispersion: the characteristic that the utility model has utilized controllable silicon to have larger rated current herein solves the problem of high-pressure electronic switch D discharge capacity, simultaneously by arranging the radiating requirements of heat sink solution high-pressure electronic switch D.
Claims (7)
1. the detection system of an inter-turn insulation defect of dry hollow reactor, it is characterized in that, comprise power supply, current-limiting resistance R, capacitor C, high-pressure electronic ON-OFF control circuit, high-pressure electronic switch D, capacitive divider and Wave form detector, high-pressure electronic ON-OFF control circuit is connected with high-pressure electronic switch D, the break-make of controlling high-pressure electronic switch, capacitive divider has high-voltage arm capacitor C H and low-voltage arm capacitor C L;
During detection, described power supply, current-limiting resistance R, capacitor C and reactor Lx to be measured are composed in series closed-loop path, capacitive divider is in parallel with reactor Lx to be measured, Wave form detector is in parallel with the low-voltage arm capacitor C L of capacitive divider, and high-pressure electronic switch D is in parallel with the series arm that described capacitor C and reactor Lx to be measured form;
When high-pressure electronic switch D disconnects, power supply charges to capacitor C, and after high-pressure electronic switch D closure, capacitor C and reactor Lx to be measured form resonant tank; The break-make that high-pressure electronic ON-OFF control circuit is controlled high-pressure electronic switch makes capacitor C carry out intermittent discharge to reactor Lx to be measured, on reactor Lx to be measured, produce high-frequency impulse oscillating voltage, Wave form detector detects the output waveform of reactor Lx to be measured, judges whether reactor Lx to be measured exists inter-turn insulation defect.
2. the detection system of inter-turn insulation defect of dry hollow reactor according to claim 1, is characterized in that, the high-capacity direct current high pressure generator of described power supply for adopting intermediate frequency multiplication of voltage mode to export.
3. the detection system of inter-turn insulation defect of dry hollow reactor according to claim 1 and 2, is characterized in that,
Described high-pressure electronic switch D consists of controllable silicon in serial connection valve group, and controllable silicon in serial connection valve group is in series by a plurality of thyristor valves
,each thyristor valve is composed in parallel by controllable silicon, fly-wheel diode and equalizing resistance three, and in described thyristor valve
,described controllable silicon is oppositely connected with fly-wheel diode; Described high-pressure electronic ON-OFF control circuit is the driving circuit of thyristor valve described in each.
4. the detection system of inter-turn insulation defect of dry hollow reactor according to claim 3, it is characterized in that, described in each, the driving circuit of thyristor valve comprises isolation drive power supply, controllable silicon drive plate and the first Optical Fiber Transmission part, the first Optical Fiber Transmission partly comprises connected successively fiber optic emitter, optical fiber and fiber optic receiver, described in each, the fiber optic emitter of the driving circuit of thyristor valve is triggered by same signal source, described in each Optical Fiber Transmission of the driving circuit of thyristor valve part lock in time difference in 100nS, the isolation drive power supply of the driving circuit of each thyristor valve is connected with fiber optic receiver with its controllable silicon drive plate, the signal output part of the fiber optic receiver of the driving circuit of each thyristor valve is connected with the signal input part of its controllable silicon drive plate, controllable silicon drive plate receives the trigger pip of fiber optic receiver transmission and controls controlled silicon conducting or the cut-off in corresponding thyristor valve.
5. the detection system of inter-turn insulation defect of dry hollow reactor according to claim 4, it is characterized in that, described detection system also comprises system, control circuit and current foldback circuit, described system, control circuit is controlled the generation of the signal of described signal source, described current foldback circuit comprises current transformer and the second Optical Fiber Transmission part, the variation of current transformer detection high-pressure electronic switch D low pressure end current signal is also given described system, control circuit by described the second Optical Fiber Transmission partial feedback, system, control circuit completes the described signal source output protection signal of judgement control and makes the controllable silicon cut-off in each thyristor valve.
6. the detection system of inter-turn insulation defect of dry hollow reactor according to claim 5, it is characterized in that, described detection system also comprises a high-pressure multi-path output isolation drive power supply, and described high-pressure multi-path output isolation drive power supply Yi road output forms the isolation drive power supply of a thyristor valve driving circuit, described high-pressure multi-path output isolation drive power supply comprises successively connected direct supply Uin, full bridge inverter and filtering circuit, also comprise high-tension cable and a plurality of current transformer, described current transformer has toroidal core, full bridge inverter is connected with described system, control circuit, under controlling, system, control circuit completes direct current to the conversion exchanging, filtering circuit filtering Resonance Wave Composition is to obtain the alternating current needing, described high-tension cable is linked to be loop by the output of filtering circuit, the toroidal core of described current transformer is passed by described high-tension cable as the primary coil inside of current transformer, the output of the secondary coil of described current transformer is through rectification, filtering, after voltage stabilizing, form the isolation drive power supply of thyristor valve driving circuit.
7. the detection system of inter-turn insulation defect of dry hollow reactor according to claim 6, it is characterized in that, thyristor valve in described controllable silicon in serial connection valve group is layered arrangement, every layer all level be provided with for improving the heat sink of thyristor valve heat radiation, described thyristor valve is fixed on heat sink.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323752A (en) * | 2013-06-05 | 2013-09-25 | 广东电网公司电力科学研究院 | Dry type air reactor turn-to-turn insulation defect detection system |
| CN105024584A (en) * | 2015-07-15 | 2015-11-04 | 浙江大学 | High-voltage pulse generation device for strong charging of fine particles |
| CN107202920A (en) * | 2016-03-16 | 2017-09-26 | 致茂电子股份有限公司 | Detection device and detection method for winding element |
| CN107202920B (en) * | 2016-03-16 | 2019-07-16 | 致茂电子股份有限公司 | Detection device and detection method for winding element |
| CN110967654A (en) * | 2019-10-17 | 2020-04-07 | 国网浙江省电力有限公司检修分公司 | Dry-type hollow series reactor turn-to-turn fault monitoring and protection identification method |
-
2013
- 2013-06-05 CN CN201320323160.0U patent/CN203405542U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323752A (en) * | 2013-06-05 | 2013-09-25 | 广东电网公司电力科学研究院 | Dry type air reactor turn-to-turn insulation defect detection system |
| CN103323752B (en) * | 2013-06-05 | 2016-03-02 | 广东电网公司电力科学研究院 | A kind of detection system of inter-turn insulation defect of dry hollow reactor |
| CN105024584A (en) * | 2015-07-15 | 2015-11-04 | 浙江大学 | High-voltage pulse generation device for strong charging of fine particles |
| CN107202920A (en) * | 2016-03-16 | 2017-09-26 | 致茂电子股份有限公司 | Detection device and detection method for winding element |
| CN107202920B (en) * | 2016-03-16 | 2019-07-16 | 致茂电子股份有限公司 | Detection device and detection method for winding element |
| CN110967654A (en) * | 2019-10-17 | 2020-04-07 | 国网浙江省电力有限公司检修分公司 | Dry-type hollow series reactor turn-to-turn fault monitoring and protection identification method |
| CN110967654B (en) * | 2019-10-17 | 2022-05-17 | 国网浙江省电力有限公司检修分公司 | Dry-type hollow series reactor turn-to-turn fault monitoring and protection identification method |
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