CN203758645U - Transformer post head temperature measurer - Google Patents

Abstract

The utility model discloses a transformer post head temperature measurer comprising temperature sensors. The temperature sensors are fixed to low-voltage post heads of a transformer and are conductively connected with a measurement and control device in a distribution box. The measurement and control device is powered by low-voltage wires of one phase and is connected with a transformer data transmission network. The transformer post head temperature measurer with the structure is simple in structure and can be used to measure the temperature of the low-voltage post heads of the transformer, so that burnout of the transformer caused by overheating of the low-voltage post heads due to three-phase load unbalance of the transformer can be avoided and normal electricity supply is guaranteed for production and residents.

Description

Transformer pile head temperature measuring device

technical field

The utility model relates to the field of electric power infrastructure, in particular to a transformer pile head temperature measuring device.

Background technique

In the power system, distribution transformers occupy a very important position. Once a fault occurs, it will directly bring losses to production and normal life of residents.

In order to prevent the transformer from burning out due to excessive temperature, the temperature of the transformer is generally measured. When the temperature is too high, the staff will overhaul the transformer to ensure the normal electricity consumption of production and residents. At present, the temperature measurement of the transformer is the winding temperature of the transformer. However, in actual use, especially during the peak load period in summer, many transformers will still burn out when the measured winding temperature is within the normal range. After investigation and analysis, it was found that when the three-phase load was unbalanced, it was easy to cause the transformer to be overloaded, resulting in the temperature of the low-voltage pile head being too high, which eventually caused the transformer to burn out.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art and provide a transformer pile head temperature measuring device, which has a simple structure and can detect the temperature of the low-voltage pile head of the transformer, so as to avoid the low voltage caused by the unbalanced three-phase load of the transformer. The pile head overheated and burned the transformer, ensuring the normal electricity consumption of production and residents.

The technical scheme that the utility model takes is:

The transformer pile head temperature measuring device includes temperature sensors, the temperature sensors are respectively fixed on the low-voltage pile heads of the transformer, and the temperature sensors are conductively connected with the measurement and control device in the distribution box through wires, and the measurement and control device is composed of one phase The low-voltage wire is used for power supply, and the measurement and control device is connected with the substation data transmission network.

The further improvement of the utility model is that the measurement and control device includes a temperature measurement module, a calculation module, and a communication module, the temperature sensor (5) is connected to the measurement module, and the calculation module and the communication module are connected to the substation data network.

A further improvement solution of the present invention is that the temperature sensor is a gasket structure or a flexible linear structure.

A further improvement of the utility model is that the temperature sensor is a gasket structure, and the temperature sensor and the low-voltage wire are fixed on the low-voltage pile head through a fixing nut.

The further improvement of the utility model is that the temperature sensor is a flexible linear structure, and the temperature sensor is wound around the connection between the low-voltage electric wire and the low-voltage pile head, and fixed by a fixing nut.

A further improvement of the utility model is that the ends of the low-voltage electric wires are connected to the low-voltage pile heads through connectors.

The beneficial effects of the utility model are:

The transformer pile head temperature measuring device of the utility model has a simple structure and can detect the temperature of the low-voltage pile head of the transformer, so as to avoid the overheating of the low-voltage pile head caused by the unbalanced three-phase load of the transformer and burn the transformer, thereby ensuring the safety of production and residents. Normal electricity consumption.

Description of drawings:

Fig. 1 is a schematic front view of the transformer structure of the present invention.

Fig. 2 is a schematic front view of the opening structure of the distribution box of the present invention.

FIG. 3 is a schematic enlarged front view of the M structure in FIG. 1 .

Detailed ways:

Shown in conjunction with Fig. 1, Fig. 2 and Fig. 3, the utility model comprises temperature sensor 5, and described temperature sensor 5 is respectively fixed on the low-voltage pile head 2 of transformer 1, and described temperature sensor 5 is connected with distribution box 10 by wire 8 The measurement and control device 17 is conductively connected, and the measurement and control device 17 is powered by the low-voltage electric wire 4 of one phase, and the measurement and control device 17 is connected with the substation data transmission network; the measurement and control device 17 includes a temperature measurement module, a calculation module and a communication module , the temperature sensor 5 is connected to the measurement module, and the calculation module and the communication module are connected to the substation data network; the temperature sensor 5 is a gasket structure or a flexible linear structure; the temperature sensor 5 is a gasket structure, through The fixing nut 6 fixes the temperature sensor 5 and the low-voltage electric wire 4 to the low-voltage pile head 2; The nut 6 is fixed; the end of the low-voltage electric wire 4 is connected to the low-voltage pile head 2 through the connector 7 .

In the utility model, the connecting piece 7 of the temperature sensor 5 and the low-voltage electric wire 4 is fixed on the screw rod 3 of the low-voltage pile head 2 through the fixing nut 6. 13 is connected to the incoming line end, and the outgoing line end of the fuse 13 is connected to a switch A14; wherein the outgoing line end of the fuse 13 of one phase low-voltage electric wire 4 is connected with a measurement and control device 17 in parallel through the electric wire 16, and the electric wire 16 is connected with a switch B1; The three-phase low-voltage wire 4 and the ground wire are located between the transformer 1 and the distribution box 10 through the bushing A11; the wire 8 of the temperature sensor 5 corresponding to the three-phase low-voltage wire 4 is located between the transformer 1 and the power distribution box. The portion between the tanks 10 passes through the bushing B12.

During work, the temperature sensor 5 transmits the temperature signal to the measurement and control device 17 through the wire 8. After the measurement module of the measurement and control device 17 receives the temperature signal, the temperature signal is converted into an electrical signal by the calculation module, and the communication module converts the electrical signal of the calculation module. The signal is sent to the monitoring station through the substation data network. After receiving the feedback signal, the monitoring station judges whether it is necessary for the staff to overhaul the corresponding transformer according to the signal, so as to avoid the transformer from burning out and ensure normal power supply.

Claims (6)

1. transformer pile head temperature measuring equipment, it is characterized in that: comprise temperature sensor (5), described temperature sensor (5) is individually fixed in the low lamination shoe (2) of transformer (1), described temperature sensor (5) is connected with measure and control device (17) conduction in panel box (10) by wire (8), described measure and control device (17) is powered by the low tension wire of a phase (4) wherein, and described measure and control device (17) is connected with substation data transmission network.

2. transformer pile head temperature measuring equipment as claimed in claim 1, it is characterized in that: described measure and control device (17) comprises temperature-measuring module, computing module and communication module, described temperature sensor (5) is connected with measurement module, and computing module is connected with substation data network with communication module.

3. transformer pile head temperature measuring equipment as claimed in claim 1, is characterized in that: described temperature sensor (5) is gasket type structure or flexible linear structure.

4. transformer pile head temperature measuring equipment as claimed in claim 3, is characterized in that: described temperature sensor (5) is gasket type structure, by hold-down nut (6), temperature sensor (5) and low tension wire (4) is fixed on to low lamination shoe (2).

5. transformer pile head temperature measuring equipment as claimed in claim 3, it is characterized in that: described temperature sensor (5) is flexible linear structure, temperature sensor (5) is wound on the junction of low tension wire (4) and low lamination shoe (2), and fixing by hold-down nut (6).

6. the transformer pile head temperature measuring equipment as described in claim 4 or 5, is characterized in that: the end of described low tension wire (4) is connected with low lamination shoe (2) by web member (7).