CN203259616U - Device for monitoring and protecting series reactor - Google Patents
Device for monitoring and protecting series reactor Download PDFInfo
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- CN203259616U CN203259616U CN 201320217711 CN201320217711U CN203259616U CN 203259616 U CN203259616 U CN 203259616U CN 201320217711 CN201320217711 CN 201320217711 CN 201320217711 U CN201320217711 U CN 201320217711U CN 203259616 U CN203259616 U CN 203259616U
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Abstract
The utility model provides a device for monitoring and protecting series reactor, wherein a detecting coil set is arranged inside or outside a dry type hollow reactor coil body. One side of the detecting coil set corresponds with the reactor, and the other side is correspondingly provided with an isolation transformer. One end of the isolation transformer is grounded, and the other end is connected with a wave filter module in series. The wave filter module, the resistor and a TVS transient voltage inhibitor are successively connected in series and then grounded. The wave filter module and a data acquisition module are successively connected in series and then grounded. The data acquisition module is connected with a control computer. The device for monitoring and protecting the series reactor has the following beneficial effects: preventing series accidents such as reactor firing; improving operation safety factor of a current limiting reactor, and ensuring safety operation of a transformer.
Description
Technical field
The utility model belongs to field of electrical equipment, relates to a kind of coil a kind of new equipment that burns on fire be used to preventing that reactor interturn short circuit from causing, especially a kind of current-limiting reactor on-line monitoring and protective device.
Background technology
Since reform and opening-up, China's power grid construction is accelerated, and popularization, transformer substation construction are also increasing.Along with the progress of the development of science and technology and society, the consciousness of people's conservation of nature is more and more stronger, becomes gradually the main flow of reactor product without the dry reactor of oil, is widely used in the power transmission and transformation fields.In case yet dry-type air-core reactor exist insulation processing improper, seal into water or insulation ag(e)ing to a certain extent, weak insulation course does not have insulating effect, in moment of switching or the operation over-voltage condition occurs, adjacent two circle lines will form a short-circuited conducting sleeve.This moment, this short-circuited conducting sleeve temperature sharply raise so, and the insulation that drives the adjacent lines layer is destroyed, and accident occurs rapidly, whole process only tens of seconds.Although mylar, glass fiber and epoxy resin all belong to fire proofing, insulation course is by high temperature cabonization under huge short-circuit current, and reactor accident on fire is of common occurrence, and injures the security of operation of other equipment.In view of current detection and the salvo effect limited, can't detect Inter-turn Short Circuit Phenomenon, in addition transformer station's unattended and accident can not expection property, the effect of prevention reactor accident on fire is still not fully up to expectations.How to realize the moment excision Reactor Branch of turn-to-turn short circuit occurring, avoiding fault spread to change into is a problem that needs to be resolved hurrily.For addressing the above problem, ad hocly counted a kind of coil a kind of new equipment that burns on fire that prevents that reactor interturn short circuit from causing.
The utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art; a kind of current-limiting reactor monitoring and protective device are provided; this device can be realized the effective monitoring to the reactor interturn short circuit accident; realize unattended cut-out of the lower very first time of situation accident reactor loop; protection system and other equipment are unaffected; avoid the short-circuit fire functions such as extension that cause the accident, solved the problems referred to above.
The purpose of this utility model solves by the following technical programs:
A kind of current-limiting reactor monitoring and protective device comprise power supply, reactor, detecting coil group, isolating transformer, filter module, resistance, TVS Transient Voltage Suppressor, data acquisition module and control computing machine; Described detecting coil group is arranged on inside or the outside of dry-type air-core reactor coil body, detecting coil group one side is corresponding with reactor, detecting coil group opposite side correspondence is provided with isolating transformer, isolating transformer one end ground connection, and the isolating transformer other end is in series with filter module; Filter module, resistance and TVS Transient Voltage Suppressor be the rear ground connection of order series connection successively, ground connection after filter module and data acquisition module are sequentially connected successively; Data acquisition module is connected with the control computing machine.
Described detecting coil group is identical by two physical dimensions and the number of turn, and around forming to opposite coil.
Each detecting coil in described detecting coil group is with the high insulation resistance cable of the RVV wire as secondary coil, and each detecting coil is loaded on the reactor vacation and seals.
Between sealing, described detecting coil and reactor have an air flue.
Draw after described detecting coil terminal is fixing with bakelite rod.
A kind of method of current-limiting reactor monitoring and protection; inside or outside at the dry-type air-core reactor coil body install detecting coil additional; by detect in the reactor course of work that every pair of magnetic field detecting coil induces differential voltage signal; realization is online detects reactor interturn short circuit fault in real time, and the moment startup is reported to the police when shorted-turn fault occurs.
Sealing inside or outermost at dry-type air-core reactor coil body interior seals the outside and installs a pair of detecting coil additional, detecting coil is with the high insulation resistance cable of the RVV wire as secondary coil, and being loaded on the reactor vacation seals, and there is an air flue in reactor between sealing, and terminal is drawn after fixing with bakelite rod.
The differential voltage signal that detects refers to the induced voltage due to generation that alternating magnetic field is responded to; After turn-to-turn short circuit occured, the alternating magnetic field of reactor itself can change, thereby no longer symmetrical, and at this moment detecting coil brings out the also appearance variation thereupon of existing induced voltage parameter.
The purpose of this utility model:
1. " current-limiting reactor on-Line Monitor Device " possesses monitoring and protective capability to the reactor that moves, and when current-limiting reactor being detected when turn-to-turn is short-circuited, the current-limiting reactor on-Line Monitor Device is in time moved.
2. " current-limiting reactor on-Line Monitor Device " can not have influence on default threshold values because of factors such as voltage fluctuations, can not produce misoperation.
Formation of the present utility model: the utility model is made of hardware system and software systems.
Hardware: computing machine (controller), detecting coil, isolating transformer, low-pass filter, TVS, data acquisition plate, light R-T unit.
Software: based on current-limiting reactor monitoring and the defence program of LabView.
At first detecting coil is installed in the reactor outermost and seals the outside, the symmetrical placement is used for surveying changes of magnetic field, Fig. 1 is the hardware system schematic diagram, the differential voltage that the U representative is induced by the symmetrical detecting coil of placing in Fig. 1, isolating transformer guarantees that measuring junction and electric system are independent of each other, and low-pass filter guarantees to collect the correctness of signal.R and TVS protected data collection plate.The signals collecting that data acquisition board is used for processing through front element enters computing machine.Current-limiting reactor monitoring and defence program set threshold value, by to comparing with threshold value after the collection signal computing, judge whether reactor built-in electrical insulation structure is intact.Impaired if insulate, inner turn-to-turn short circuit, computing machine will be to protection unit trip signal, and the protection device action excises the road of reactor from circuit.
The beneficial effect of the utility model technology is:
2.1 avoid the reactor generation that waits major break down on fire
The utility model will improve existing protected mode; reactor is drawn the fault spread that turn-to-turn short circuit causes play effective protective action; the inner turn-to-turn short circuit situation that exists of discovery reactor that can be promptly and accurately; and rapid tripping switch; excision accident loop; thereby guarantee that reactor is not on fire, power plant safety and other equipment are unaffected.
2.2 improve the current limiting reactor operating safety factor, thereby guarantee the safe operation of transformer.
The utility model can extend on current limiting reactor, the larger economic loss that can avoid the turn-to-turn short circuit accident to bring to transformer and follow-up equipment.
Description of drawings
Fig. 1 is hardware configuration schematic diagram of the present utility model;
In figure: 1 is power supply; 2 is reactor; 3 is detecting coil; 4 is isolating transformer; 5 is filter module; 6 is resistance; 7 is the TVS Transient Voltage Suppressor; 8 is data acquisition module; 9 for controlling computing machine.
Fig. 2-1st, the scheme of installation of detecting coil; Fig. 2-2nd, the vertical view of detecting coil;
In figure: 2 is reactor; 3 is detecting coil; 4 seal for reactor; 5 is air flue; 6 is bakelite rod.
Fig. 3-1st, the schematic diagram of reactor generation turn-to-turn short circuit; The partial enlarged drawing of Fig. 3-2 reactor generation turn-to-turn short circuit.
In figure: 7 is short-circuited region; 8 is short dot.
Fig. 4-1st, reactor normal condition figure; Fig. 4-2nd, reactor interturn short circuit changes of magnetic field figure.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Referring to Fig. 1,2-1,2-2,3-1,3-2,4-1 and 4-2, reactor is just producing under ruuning situation, and reactor periphery magnetic field relative level axis is distributed symmetrically.When shorted-turn fault (situation shown in Fig. 3-2) occured, the magnetic field that the short-circuited conducting sleeve inverse current produces can weaken original magnetic field.Therefore, the dry-type air-core reactor Distribution of Magnetic Field has appearred about the asymmetric phenomenon of horizontal axis in shorted-turn fault.This moment, Distribution of Magnetic Field was no longer symmetrical about horizontal axis, i.e. the Distribution of Magnetic Field distorted.Judge that whether symmetrical problem that whether dry-type air-core reactor shorted-turn fault occurs judge reactor magnetic field the problem that spatially distributes with regard to being converted into.
Select detecting coil to detect alternating magnetic field, detecting coil is around on the contrary, the symmetrical installation, be connected in series (Fig. 2-2), by the change in voltage of monitoring detecting coil opening, whether symmetrically can detect magnetic field, judge namely whether the reactor built-in electrical insulation breakage occurs cause turn-to-turn short circuit.
At first detecting coil is installed in outer encapsulating outside (or in seal the inside), the symmetrical placement is used for surveying changes of magnetic field, isolating transformer is used for isolating reactor and measuring junction, to guarantee that measuring junction and electric system are independent of each other, low-pass filter is used for preventing spectral aliasing, guarantees to collect the correctness of signal.R and TVS acting in conjunction reach the purpose of protected data capture card.Data collecting card is used for treated signals collecting is entered computing machine.
Current-limiting reactor monitoring and defence program set threshold value, by to comparing with threshold value after the collection signal computing, judge whether reactor built-in electrical insulation structure is intact.Impaired if insulate, inner turn-to-turn short circuit, computing machine will be to protection unit trip signal, and the protection device action excises the road of reactor from circuit, avoid reactor on fire, eliminates disaster hidden-trouble, protects other equipment.Light R-T unit guarantees that in order to avoid on-the-spot electromagnetic interference (EMI) signal is accurate.Because transformer station exists a large amount of electromagnetic interference (EMI) to exist therefore light R-T unit is adopted in the signal transmission of this complete equipment.
Detecting coil is with the high insulation resistance cable of the RVV wire as secondary coil, and being loaded on the reactor vacation seals, and there is certain distance (air flue) in reactor between sealing, and terminal draws after fixing with bakelite rod, thereby solves once and the dielectric level problem between secondary.
The above; It is only preferred embodiment of the present utility model; Be not that the utility model is done any pro forma restriction; Although the utility model discloses as above with preferred embodiment; Yet be not to limit the utility model; Any those skilled in the art; Within not breaking away from the technical solutions of the utility model scope; When the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations; In every case be the content that does not break away from technical solutions of the utility model; Any simple modification that foundation technical spirit of the present utility model is done above embodiment; Equivalent variations and modification; Still belong in the scope of technical solutions of the utility model.
Claims (5)
1. a current-limiting reactor is monitored and protective device, it is characterized in that: comprise power supply, reactor, detecting coil group, isolating transformer, filter module, resistance, TVS Transient Voltage Suppressor, data acquisition module and control computing machine; Described detecting coil group is arranged on inside or the outside of dry-type air-core reactor coil body, detecting coil group one side is corresponding with reactor, detecting coil group opposite side correspondence is provided with isolating transformer, isolating transformer one end ground connection, and the isolating transformer other end is in series with filter module; Filter module, resistance and TVS Transient Voltage Suppressor be the rear ground connection of order series connection successively, ground connection after filter module and data acquisition module are sequentially connected successively; Data acquisition module is connected with the control computing machine.
2. a kind of current-limiting reactor as claimed in claim 1 is monitored and protective device, and it is characterized in that: described detecting coil group is identical by two physical dimensions and the number of turn, and around forming to opposite coil.
3. a kind of current-limiting reactor as claimed in claim 1 is monitored and protective device; it is characterized in that: each detecting coil in described detecting coil group is with the high insulation resistance cable of the RVV wire as secondary coil, and each detecting coil is loaded on the reactor vacation and seals.
4. a kind of current-limiting reactor is monitored and protective device as claimed in claim 2 or claim 3, it is characterized in that: have an air flue between described detecting coil and reactor are sealed.
5. a kind of current-limiting reactor is monitored and protective device as claimed in claim 2 or claim 3, it is characterized in that: draw after described detecting coil terminal is fixing with bakelite rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320217711 CN203259616U (en) | 2013-04-25 | 2013-04-25 | Device for monitoring and protecting series reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320217711 CN203259616U (en) | 2013-04-25 | 2013-04-25 | Device for monitoring and protecting series reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203259616U true CN203259616U (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320217711 Expired - Lifetime CN203259616U (en) | 2013-04-25 | 2013-04-25 | Device for monitoring and protecting series reactor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278726A (en) * | 2013-04-25 | 2013-09-04 | 合容电器股份有限公司 | Device and method for monitoring and protecting series reactor |
| CN109375076A (en) * | 2018-11-28 | 2019-02-22 | 周超超 | A kind of on-line monitoring method for dry-type air-core reactor turn-to-turn insulation failure |
| CN109901005A (en) * | 2019-02-25 | 2019-06-18 | 国网山东省电力公司济南供电公司 | Shorted-turn fault detection method, system and the application of axial magnetic field difference |
| CN113447782A (en) * | 2021-08-30 | 2021-09-28 | 南方电网科学研究院有限责任公司 | Coil equipment turn insulation state monitoring device, system and monitoring method |
-
2013
- 2013-04-25 CN CN 201320217711 patent/CN203259616U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278726A (en) * | 2013-04-25 | 2013-09-04 | 合容电器股份有限公司 | Device and method for monitoring and protecting series reactor |
| CN109375076A (en) * | 2018-11-28 | 2019-02-22 | 周超超 | A kind of on-line monitoring method for dry-type air-core reactor turn-to-turn insulation failure |
| CN109901005A (en) * | 2019-02-25 | 2019-06-18 | 国网山东省电力公司济南供电公司 | Shorted-turn fault detection method, system and the application of axial magnetic field difference |
| CN113447782A (en) * | 2021-08-30 | 2021-09-28 | 南方电网科学研究院有限责任公司 | Coil equipment turn insulation state monitoring device, system and monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CU01 | Correction of utility model |
Correction item: Patentee Correct: HERONG ELECTRIC Co.,Ltd. False: Herong Electric Co.,Ltd. Number: 44 Page: The title page Volume: 29 |
|
| CU03 | Publication of corrected utility model |
Correction item: Patentee Correct: HERONG ELECTRIC Co.,Ltd. False: Herong Electric Co.,Ltd. Number: 44 Volume: 29 |
|
| ERR | Gazette correction | ||
| RECT | Rectification | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171213 Address after: Economic and Technological Development Zone Jingwei Industrial Park Weiyang road 710000 middle Shaanxi city of Xi'an Province Patentee after: XI'AN HERONG ELECTRIC POWER EQUIPMENT CO.,LTD. Address before: 710200 Shaanxi city of Xi'an Province Economic and Technological Development Zone Jingwei Industrial Park Road No. 09 Patentee before: HERONG ELECTRIC Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |
|
| CX01 | Expiry of patent term |