A kind of optical fiber temperature-measurement structure on 10kV substation transformer
Technical field
The utility model relates to substation transformer technical field, refers more particularly to a kind of optical fiber temperature-measurement structure on 10kV substation transformer.
Background technology
General transformer fault type mainly contains hot stall and electric fault, and wherein hot stall accounts for about 60% of total failare number of units, and overheated double high-energy discharge fault accounts for about 10%.The oil-filled transformer life-span depends primarily on life-span of insulating material, and the deciding factor impelling insulating material aging is exactly temperature, and therefore hot-spot temperature of transformer determines the serviceable life of transformer.
Past, the temperature of hot spots cannot be monitored due to insulating requirements in transformer and inner strong electromagnetic.For security consideration, under Domestic Transformers is mostly in 50% ~ 70% rated power, non-economy operation conditions.Pass by be all by installing current transformer at casing part, the hot spot temperature of winding of the way measuring transformer of passback simulating signal, error is larger for this reason.Therefore, just seem particularly important for how searching out a kind of technological means that effectively accurately can detect the hot(test)-spot temperature of inside transformer winding temperature.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of rational in infrastructure, easy to operate and can detect the optical fiber temperature-measurement structure on 10kV substation transformer of inside transformer hot spot temperature of winding effectively and accurately.
For achieving the above object, technical scheme provided by the utility model is: a kind of optical fiber temperature-measurement structure on 10kV substation transformer, comprise high-low pressure winding, also comprise the sensor oil duct stay be installed on described high-low pressure winding, for detect the fibre optic temperature sensor of described high-low pressure winding interior loop temperature, the optical Fiber Closure be connected with this fibre optic temperature sensor by optical fiber, for the wire clamp of fixed fiber and the folder for fixedly mounting described wire clamp.
Further, described sensor oil duct stay one end offers the U-shaped breach of the probe for installing described fibre optic temperature sensor.
Again further, described U-shaped breach is arranged on on the sensor oil duct stay at described high-low pressure integral height 1/3rd isometry position place.
Preferably, described folder comprises channel-section steel main body and is arranged at the fixed head for fixing described wire clamp on this side, channel-section steel main body top.
Further, described wire clamp top is also provided with the cross-type breach of the probe for fixedly mounting the fibre optic temperature sensor detecting described high-low pressure winding oil temperature.
This programme is by the high-low pressure winding in transformer being provided with the fibre optic temperature sensor for detecting its hot(test)-spot temperature, the temperature value detected by fibre optic temperature sensor during work also utilizes fiber pass-back in optical Fiber Closure, in real time monitoring temperature is carried out to high-low pressure winding, from ensureing that transformer is in high-efficiency operation state.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model.
Fig. 2 is side-looking structural representation of the present utility model.
Fig. 3 is the clamping structure schematic diagram in the utility model.
Fig. 4 is the wire clamp structural representation in the utility model.
Fig. 5 is the sensor oil passage stripe structural representation in the utility model.
In figure: 1-high-low pressure winding, 2-fibre optic temperature sensor, 3-wire clamp, 4-folder, 5-optical Fiber Closure, 6-sensor oil duct stay, 301-cross-type breach, 401-channel-section steel main body, 402-fixed head, 601-U type breach.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail:
Shown in attached Fig. 1 and 2, a kind of optical fiber temperature-measurement structure on 10kV substation transformer described in the present embodiment, it comprises high-low pressure winding 1, the sensor oil duct stay 6 be arranged on high-low pressure winding 1, for detect the fibre optic temperature sensor 2 of high-low pressure winding 1 interior loop temperature, the optical Fiber Closure 5 be connected with this fibre optic temperature sensor 2 by optical fiber, for the wire clamp 3 of fixed fiber and the folder 4 for fixedly mounting wire clamp 3.Low pressure winding wherein in this programme adopts multi-layer cylindrical structure, and the oil duct on it is positioned at 1/2 place of low pressure integral height, and sensor oil duct stay is arranged on its low pressure head opposite place; High pressure winding adopts multi-layer cylindrical structure equally, and the oil duct on it is positioned at 1/3 place of high pressure winding whole height, and sensor oil duct stay is arranged on its high voltage winding terminal side place.
In addition, fibre optic temperature sensor 2 in this programme is sensitive components, and rotating speed exceedes the tolerance range of optical fiber temperature-measurement element during coil winding, need installing optical fibres sensor again after coil winding is pacified into, therefore sensor oil duct stay 6 one end has U-shaped breach 601, this U-shaped breach 601 height at coil height 1/3 place, be convenient to coil winding complete after the probe of insertion fibre optic temperature sensor 2.
Meanwhile, the folder 4 in this programme comprises channel-section steel main body 401 and is arranged at the fixed head 402 for fixing cord folder 3 on this side, channel-section steel main body 401 top.Wire clamp 3 top is also provided with the cross-type breach 301 of the probe for fixedly mounting the fibre optic temperature sensor 2 detecting high-low pressure winding 1 oil temperature, for top-oil temperature in measuring transformer.
The examples of implementation of the above are only the preferred embodiment of the utility model, not limit practical range of the present utility model with this, therefore the change that all shapes according to the utility model, principle are done, all should be encompassed in protection domain of the present utility model.