CN212434450U - Transformer with multi-parameter all-fiber sensing function - Google Patents
Transformer with multi-parameter all-fiber sensing function Download PDFInfo
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- CN212434450U CN212434450U CN202021053026.XU CN202021053026U CN212434450U CN 212434450 U CN212434450 U CN 212434450U CN 202021053026 U CN202021053026 U CN 202021053026U CN 212434450 U CN212434450 U CN 212434450U
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Abstract
The utility model relates to a transformer with multi-parameter all-fiber sensing, wherein an optical fiber temperature monitoring device is respectively arranged in each phase winding of the transformer winding; optical fiber pressure sensors are symmetrically arranged at the upper end part and the lower end part of the two sides of the transformer winding respectively; arranging an optical fiber vibration sensor on a clamping piece of the transformer iron core; respectively arranging optical fiber partial discharge sensors at the lead end of the transformer bushing, the high field intensity area of the winding end part and two sides of the transformer oil tank; and binding and fixing the lead-out optical fiber cables of all the optical fiber sensors on a wood supporting insulating part in the transformer, leading out all the optical fiber cables to an optical fiber through part on the wall of the oil tank of the transformer, and connecting the optical fiber cables with an external optical fiber cable. The utility model realizes the data monitoring of the multi-parameter comprehensive states of the insulation, the machinery, the overheating and the like in the transformer, and effectively enhances the intellectualization and the informatization level of the transformer; the utility model discloses a real-time supervision, the probability that reducible transformer broke down, the life of extension transformer.
Description
Technical Field
The utility model belongs to the technical field of the transformer production is made, concretely relates to possesses transformer of full optical fiber perception of many parameters, and the real-time on-line monitoring of transformer state is realized to full optical fiber sensing technique of innovation application.
Background
At present, in a new stage of pilot engineering construction of a 'power internet of things intelligent substation' of a national grid company, a power transformer is used as one of core devices of a power grid, and the safe and reliable operation of a power system is directly influenced by the operation condition of the power transformer. In order to ensure safe, stable and economic operation of the transformer, monitoring of the operation state, fault diagnosis and maintenance of the transformer are very necessary. However, the conventional transformer only has limited monitoring means such as oil temperature, oil level, voltage, current and the like during operation, and the state judgment mainly depends on a periodic power failure test and a post-fault diagnosis test, so that the actual operation state of the transformer cannot be comprehensively and timely reflected.
When the transformer is impacted by fault current in operation, the coil may be loosened and deformed, the short-circuit resistance is affected, the insulation weak point is easy to form, and the monitoring means for the loosening and deformation of the coil are deficient. If the internal insulation, mechanical and overheating states of the transformer can be comprehensively monitored, the method has extremely important significance for monitoring the running state of the transformer and ensuring the safe running of the transformer.
Disclosure of Invention
For solving the technical problem, the utility model provides a transformer structure scheme who possesses full optic fibre intelligence perception of many parameters contains the office and puts optical fiber sensing, temperature distribution formula grating optical fiber sensing, optic fibre vibration sensing, optic fibre pressure sensing, through the optical fiber sensor's of isostructure installation, possess the monitoring of many parameters such as temperature, stress, vibration, office put, realize transformer internal insulation, machinery, the real-time on-line monitoring of integrated state such as overheated, reduce the probability that the transformer broke down, the life of extension transformer. The utility model discloses the technical scheme who adopts as follows:
a multi-parameter all-fiber sensing transformer, comprising: the transformer comprises a first transformer high-voltage bushing, a first bushing lifting seat, a cooling fin radiator, a bushing lead, a transformer winding, a second transformer high-voltage bushing, a second bushing lifting seat, a winding upper end insulating pressing plate, a transformer oil tank, a transformer iron core and a winding lower end insulating pressing plate, wherein an optical fiber temperature monitoring device is arranged in each phase winding of the transformer winding; optical fiber pressure sensors are symmetrically arranged at the upper end part and the lower end part of the two sides of the transformer winding respectively; arranging an optical fiber vibration sensor on a clamping piece of the transformer iron core, wherein the optical fiber vibration sensor is a three-axis sensor; respectively arranging optical fiber partial discharge sensors at the lead end of the transformer bushing, the high field intensity area of the winding end part and two sides of the transformer oil tank; and binding and fixing the lead-out optical fiber cables of all the optical fiber sensors on a wood supporting insulating part in the transformer, leading out all the optical fiber cables to an optical fiber through part on the wall of the oil tank of the transformer, and connecting the optical fiber cables with an external optical fiber cable.
Preferably, an optical fiber vibration sensor mounting base is welded on the clamping piece of the transformer iron core, a square base of the optical fiber vibration sensor is mounted on the optical fiber vibration sensor mounting base, and the square base is perpendicular to and tightly connected with the iron core clamping piece.
Preferably, the optical fiber vibration sensor is fixed on three adjacent planes of the square base through bolts, and the square base is fixed on the optical fiber vibration sensor mounting base through bolts.
Preferably, the optical fiber temperature monitoring device adopts a mode of combining a single-point type optical fiber grating temperature sensor and an optical fiber grating string temperature sensor, the single-point type optical fiber grating temperature sensor is installed on an oil duct cushion block of each phase winding of the transformer winding, and the optical fiber grating string temperature sensor is installed on an external supporting bar of each phase winding.
Preferably, the single-point fiber grating temperature sensor is fixed in an oil duct spacer between the winding wires, and the fiber grating string temperature sensor is fixed in a stay between the winding longitudinal wires.
Preferably, a first square groove with a width slightly larger than the external dimension and a height slightly smaller than the external dimension of the upper optical fiber pressure sensor is arranged on the insulating pressing plate at the upper end part of the winding, and the upper optical fiber pressure sensor is fixed in the first square groove; and a second square groove with a slightly larger width and a slightly smaller height than the external dimension of the lower optical fiber pressure sensor is arranged on the insulating pressing plate at the lower end part of the winding, and the lower optical fiber pressure sensor is fixed in the second square groove.
Preferably, the optical fiber partial discharge sensor is mounted on a nearby wood insulator for wire fixation.
Preferably, a groove is formed in the upper surface of the wood insulating part near the position to be installed, and the optical fiber partial discharge sensor is fixedly installed in the groove space.
The utility model has the advantages that:
the utility model discloses possess the comprehensive perception to transformer inside temperature distribution, winding deformation, partial discharge and vibration state, realize the data monitoring of many parameters comprehensive states such as transformer internal insulation, machinery, overheated, effectively strengthen the intellectuality and the information-based level of transformer.
The utility model can reduce the failure probability of the transformer, prolong the service life of the transformer, reduce the cost and improve the production efficiency by real-time monitoring; the safety and the operation reliability of the power grid are greatly improved, safe, stable, reliable and high-quality power guarantee is provided for the sustainable development of the economy and the society, and the method can be popularized and applied to the intelligent transformation of the transformer and the construction engineering of the intelligent transformer substation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are illustrative of some embodiments of the invention, and that those skilled in the art will be able to derive other drawings without inventive step from these drawings, which are within the scope of the present application.
Fig. 1 is a schematic structural diagram of a transformer with multi-parameter all-fiber sensing according to an embodiment of the present invention;
fig. 2 is a schematic view of an upper fiber optic pressure sensor according to an embodiment of the present invention;
in the figure, 1-a first transformer high-voltage bushing, 2-a first bushing lifting seat, 3-a cooling fin radiator, 4-a bushing lead wire, 5-an optical fiber partial discharge sensor, 6-a transformer winding, 7-a single-point optical fiber grating temperature sensor, 8-an optical fiber grating string temperature sensor, 9-a second transformer high-voltage bushing, 10-a second bushing lifting seat, 11-an optical fiber vibration sensor, 12-an optical fiber vibration sensor mounting base, 13-a winding upper end insulating pressing plate, 14-an upper optical fiber pressure sensor, 15-a transformer oil tank, 16-a transformer iron core, 17-a lower optical fiber pressure sensor and 18-a winding lower end insulating pressing plate.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, it is a schematic structural diagram of a transformer with multi-parameter all-fiber sensing according to an embodiment of the present invention. A multi-parameter all-fiber sensing transformer, comprising: the transformer comprises a first transformer high-voltage bushing 1, a first bushing lifting seat 2, a cooling fin radiator 3, a bushing lead 4, a transformer winding 6, a second transformer high-voltage bushing 9, a second bushing lifting seat 10, a winding upper end insulating pressing plate 13, a transformer oil tank 15, a transformer iron core 16 and a winding lower end insulating pressing plate 18. The structure of the transformer is the prior art, and is not described herein again.
The utility model discloses a set up different mounting structure in that the transformer is inside, arrange multiple many parameters's optical fiber sensing device, realize the data monitoring of transformer many parameters comprehensive state, realize the real-time data acquisition of transformer state, ensure the safe and reliable of transformer. Wherein, an optical fiber temperature monitoring device is respectively arranged in each phase winding of the transformer winding 6. The optical fiber temperature monitoring device realizes continuous automatic monitoring of single-point temperature in a winding wire of each phase winding of the transformer and temperatures of different heights in the longitudinal direction of the winding in a mode of combining the single-point type optical fiber grating temperature sensor 7 and the optical fiber grating string temperature sensor 8. Specifically, a single-point fiber grating temperature sensor 7 is installed on an oil duct cushion block of each phase winding of the transformer winding 6, and the single-point fiber grating temperature sensor 7 is fixed in the oil duct cushion block among winding wires; the fiber grating string temperature sensor 8 is mounted on the outer stay of each phase winding, and the fiber grating string temperature sensor 8 is fixed in the stay between the longitudinal guide wires of the winding.
And optical fiber pressure sensors are respectively and symmetrically arranged at the upper end part and the lower end part of the two sides of the transformer winding 6, so that the pressure change caused by the deformation of the winding can be monitored. Specifically, a first square groove with a slightly larger width and a slightly smaller height than the external dimension of the upper optical fiber pressure sensor 14 is arranged on the winding upper end insulating pressing plate 13, and the upper optical fiber pressure sensor 14 is fixed in the first square groove, as shown in fig. 2, which is an installation schematic diagram of the upper optical fiber pressure sensor according to the embodiment of the present invention; a second square groove slightly wider and shorter than the external dimension of the lower optical fiber pressure sensor 17 is provided in the insulating pressing plate 18 at the lower end of the winding, and the lower optical fiber pressure sensor 17 is fixed in the second square groove. The optical fiber pressure sensor is arranged in the square groove and does not need to be independently fixed, and the optical fiber pressure sensor is pressed up and down by the insulating pressing plate so as to test the pressure.
The optical fiber vibration sensor 11 is arranged on a clamping piece of the transformer iron core 16, vibration signals in the x-axis direction, the y-axis direction and the z-axis direction are respectively monitored, and the change of the mechanical state of iron core vibration in the operation process of the transformer is intuitively mastered. Specifically, an optical fiber vibration sensor mounting base 12 is welded on a clamping piece of a transformer iron core 16, and a square base of an optical fiber vibration sensor 11 is mounted on the optical fiber vibration sensor mounting base 12; the optical fiber vibration sensor 11 is a three-axis sensor, and is respectively fixed on three adjacent planes on a square base, and the specially-made square base is perpendicular to and tightly connected with the iron core clamp. And selecting three adjacent planes of the square base, fixedly mounting the optical fiber vibration sensor 11, and monitoring vibration signals in the three directions of the x axis, the y axis and the z axis respectively. The optical fiber vibration sensor 11 is fixed on three adjacent planes of the square base through bolts, and the square base is fixed on the optical fiber vibration sensor mounting base 12 through bolts.
Optical fiber partial discharge sensors 5 are respectively arranged at the lead end of the transformer sleeve, the high field intensity area of the winding end part and two sides of the transformer oil tank 15, so that partial discharge monitoring and defect position positioning of the inner space of the transformer are realized. Specifically, the optical fiber partial discharge sensor 5 may be mounted on a nearby wooden insulating member for wire fixation. And (3) slotting the upper surface of the wood insulating part near the position to be installed, and fixedly installing the optical fiber partial discharge sensor 5 in the slotting space.
Finally, leading out optical fiber cables of all the optical fiber sensors are fixed on a wood supporting insulating part in the transformer, and the bending degree and binding fixation of the optical fiber cables are noticed; all optical fiber cables are led out to an optical fiber through piece on the wall of a transformer oil tank, an inner side binding post of the optical fiber through piece is fixedly connected with the optical fiber cables in the transformer oil tank, an outer side binding post of the optical fiber through piece is fixedly connected with an outer optical fiber cable, the outer optical fiber cable is connected to a signal receiving device of a control cubicle or other field control rooms through a groove box on the power station field, and different optical fiber test signals are transmitted to a signal receiving or processing device on a background through the transmission of the outer optical fiber cable.
The steps of carrying out multi-parameter monitoring on the transformer with multi-parameter all-fiber sensing are as follows:
s1, the optical fiber temperature sensor is used for monitoring the temperature in the transformer winding and feeding back temperature values under different conditions in real time to judge the insulation state of the transformer;
s2, the optical fiber vibration sensor is used for monitoring the vibration state of the iron core in the transformer, and the mechanical fault state in the transformer is judged according to the change of the vibration frequency and the amplitude;
s3, the optical fiber pressure sensor is used for monitoring the pressing force state of the winding in the transformer, and the deformation state of the winding is judged through real-time monitoring of pressing force data;
s4, the optical fiber partial discharge sensor is used for monitoring ultrasonic signals in a high-voltage field intensity area in the transformer, and the partial discharge state of the monitoring area is judged through monitoring the amplitude of the ultrasonic signals;
s5, transmitting the multi-parameter data monitored by the optical fiber sensor to a far-end background through an optical fiber cable, and realizing intelligent sensing of the multi-data in the transformer.
Finally, it is to be noted that: the above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, and the scope of the present invention is not limited thereto. Those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. A multi-parameter all-fiber sensing transformer, comprising: the transformer comprises a first transformer high-voltage bushing (1), a first bushing lifting seat (2), a cooling fin radiator (3), a bushing lead (4), a transformer winding (6), a second transformer high-voltage bushing (9), a second bushing lifting seat (10), a winding upper end insulating pressing plate (13), a transformer oil tank (15), a transformer iron core (16) and a winding lower end insulating pressing plate (18), and is characterized in that an optical fiber temperature monitoring device is arranged in each phase winding of the transformer winding (6); optical fiber pressure sensors are symmetrically arranged at the upper end part and the lower end part of the two sides of the transformer winding (6) respectively; arranging an optical fiber vibration sensor (11) on a clamping piece of a transformer iron core (16), wherein the optical fiber vibration sensor (11) is a three-axis sensor; respectively arranging optical fiber partial discharge sensors (5) at the lead end of the transformer bushing, the high field intensity area of the winding end part and two sides of a transformer oil tank (15); and binding and fixing the lead-out optical fiber cables of all the optical fiber sensors on a wood supporting insulating part in the transformer, leading out all the optical fiber cables to an optical fiber through part on the wall of the oil tank of the transformer, and connecting the optical fiber cables with an external optical fiber cable.
2. The transformer with multi-parameter all-fiber sensing function as claimed in claim 1, wherein the fiber vibration sensor mounting base (12) is welded to the clamp of the transformer core (16), and the square base of the fiber vibration sensor (11) is mounted on the fiber vibration sensor mounting base (12), and the square base is perpendicular to and tightly connected with the core clamp.
3. The transformer with multi-parameter all-fiber sensing function as claimed in claim 2, wherein the fiber vibration sensor (11) is fixed on three adjacent planes of the square base by bolts, and the square base is fixed on the fiber vibration sensor mounting base (12) by bolts.
4. The transformer with multi-parameter all-fiber sensing according to claim 1, wherein the fiber temperature monitoring device is a combination of a single-point fiber grating temperature sensor (7) and a fiber grating string temperature sensor (8), the single-point fiber grating temperature sensor (7) is installed on an oil duct block of each phase winding of the transformer winding (6), and the fiber grating string temperature sensor (8) is installed on an external stay of each phase winding.
5. The transformer with multi-parameter all-fiber sensing according to claim 4, wherein the single-point fiber grating temperature sensor (7) is fixed in the oil duct pad between the winding wires, and the fiber grating string temperature sensor (8) is fixed in the stay between the winding longitudinal wires.
6. The transformer with multi-parameter all-fiber sensing function according to claim 1, wherein a first square groove with a width slightly larger than the external dimension of the upper fiber pressure sensor (14) and a height slightly smaller than the external dimension of the upper fiber pressure sensor is arranged on the winding upper end insulation pressing plate (13), and the upper fiber pressure sensor (14) is fixed in the first square groove; and a second square groove with a width slightly larger than the external dimension and a height slightly smaller than the external dimension of the lower optical fiber pressure sensor (17) is arranged on the insulating pressing plate (18) at the lower end part of the winding, and the lower optical fiber pressure sensor (17) is fixed in the second square groove.
7. The transformer with multi-parameter all-fiber sensing of claim 1, wherein the fiber partial discharge sensor (5) is mounted on a nearby wooden insulator for wire fixation.
8. The transformer with multi-parameter all-fiber sensing function as claimed in claim 7, wherein the upper surface of the wooden insulating member near the position to be mounted is grooved, and the optical fiber partial discharge sensor (5) is fixedly mounted in the grooved space.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021053026.XU CN212434450U (en) | 2020-06-09 | 2020-06-09 | Transformer with multi-parameter all-fiber sensing function |
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| CN202021053026.XU CN212434450U (en) | 2020-06-09 | 2020-06-09 | Transformer with multi-parameter all-fiber sensing function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111724983A (en) * | 2020-06-09 | 2020-09-29 | 山东电力设备有限公司 | Transformer with multi-parameter all-fiber sensing function and multi-parameter monitoring method |
| CN113203704A (en) * | 2021-05-11 | 2021-08-03 | 东北大学 | Transformer monitoring and sensing integrated optical fiber sensor and use method |
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2020
- 2020-06-09 CN CN202021053026.XU patent/CN212434450U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111724983A (en) * | 2020-06-09 | 2020-09-29 | 山东电力设备有限公司 | Transformer with multi-parameter all-fiber sensing function and multi-parameter monitoring method |
| CN113203704A (en) * | 2021-05-11 | 2021-08-03 | 东北大学 | Transformer monitoring and sensing integrated optical fiber sensor and use method |
| CN113203704B (en) * | 2021-05-11 | 2022-09-27 | 东北大学 | Transformer monitoring and sensing integrated optical fiber sensor and use method |
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