Intelligent diagnosis device and method for transformer winding material
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A transformer winding and intelligent diagnosis technology, applied in the field of transformer detection, can solve problems such as difficult operation, hidden safety hazards, high cost, etc., and achieve the effect of simple operation, wide application range and low cost
Inactive Publication Date: 2016-09-28
STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST +1
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[0006] The purpose of the present invention is to propose an intelligent diagnostic device for transformer winding materials; this device solves the problems of high cost, difficult operation, and potential safety hazards of existing methods such as destructive inspection and X-ray flaw detection, and adopts a diagnostic method based on thermoelectric effect , on the premise of not dismantling the transformer and not damaging the winding, the diagnosis of the transformer material is carried out
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Embodiment 1
[0047] Such as figure 1 As shown, a transformer winding material intelligent diagnosis device provided in this embodiment includes a PTC heating device, a temperature sensor, an acquisition device and a processor;
[0048] The PTC heating device is connected to the acquisition device through a relay; the PTC heating device is used to heat the beginning of the transformer phase joint conductive rod; the temperature sensor is used to collect the temperature at the beginning of the transformer phase joint conductive rod; the acquisition device and Processor connection.
[0049] The processor of this embodiment is a personal computer (PC).
[0050] The heat source of the PTC heating device in this embodiment is 2 to 4 pieces of PTC ceramic constant temperature heating chips, the model selection is 220V / 260°C / 300W, and the specification is 56*56*7 mm. The main advantage of PTC ceramic constant temperature heating plate is the principle of non-electromagnetic heating, which will n...
Embodiment 2
[0069] The intelligent diagnosis method for transformer winding material provided in this embodiment includes the following steps:
[0070] S1: Open the relay to initialize the magnification and collect the initial thermoelectric potential and input it to the processor;
[0071] S2: adjust and set the initial thermoelectric potential range;
[0072] S3: The closed relay heats the phase connector of the transformer through the heating device;
[0073] S4: Collect the temperature signal of the transformer phase joint and input it to the processor;
[0074] S5: Determine whether the temperature at the phase joint of the transformer is within the preset temperature threshold range, and if so, control the magnification to collect the thermoelectric potential and input it to the processor;
[0075] S6: Calculate the thermoelectric potential holding voltage by the following formula:
[0076] U=S ab (T 1 -T 2 );
[0077] In the formula: S ab is the relative Seebeck coefficient...
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Abstract
The invention discloses an intelligent diagnosis device for transformer winding material, which comprises a PTC heating device, a temperature sensor, an acquisition device and a processor; the PTC heating device is connected with the acquisition device through a relay; The starting end is heated; the temperature sensor is used to collect the temperature at the beginning end of the conductive rod of the transformer phase joint; the collecting device is connected with the processor. The diagnostic device provided by the present invention solves the problems of slow diagnostic speed and complicated diagnostic process of the existing diagnostic devices and methods, and has simple operation and fast diagnostic speed; the device is based on thermoelectric effect for transformer material identification, so the operation is simple and there is no potential safety hazard . On the premise of not dismantling the transformer and destroying the winding, it can be diagnosed simply and quickly. Wide range of use. It can identify various types of transformer windings. Different heater sizes are designed for different transformer phase joints, and various types of transformer windings can be identified through intelligent diagnostic devices.
Description
technical field [0001] The invention relates to the field of transformer detection, in particular to an intelligent diagnosis device for transformer winding material. Background technique [0002] With the rapid development of the national economy, the demand for electricity is increasing, and the demand for power transformers is increasing. However, in recent years, the price of raw materials has risen, the price of copper wire has risen sharply, and the production cost of transformers has become higher and higher. However, the sales price of transformers cannot rise by the same rate due to market constraints. Therefore, in power transformers, especially 10kV distribution transformers, there has been a long-term phenomenon of using aluminum wires instead of copper wires. The transformers of some manufacturers are made of semi-aluminum. For example, the primary winding is aluminum and the secondary is copper, or the primary winding is copper and the secondary is aluminum. S...
Claims
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 李永福王谦吴高林伏进刘川刘波彭华东胡晓锐赵晶杜林
Owner STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST
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