CN104061177B - A kind of main transformer radiator fan with photovoltaic translation function - Google Patents

Abstract

The invention relates to a main transformer radiator fan with photovoltaic conversion function and its use method, comprising a main transformer body and an oil flow radiator connected to the main transformer body, characterized in that: the oil flow radiator is installed with a connecting There is a main transformer radiator fan with a photovoltaic conversion system, and the main transformer radiator fan is connected with a control module, and the control module passes the temperature tested by the online oil temperature detector connected to the main transformer, according to the preset oil temperature. The temperature value automatically turns on and off the fan of the main transformer radiator. The design of the device is reasonable, energy-saving and environmentally friendly, and can effectively solve the heat dissipation problem of the main transformer under long-term work.

Description

A main transformer radiator fan with photovoltaic conversion function

technical field

The invention relates to a cooling fan device, in particular to a main transformer radiator fan with photovoltaic conversion function.

Background technique

During the operation of the main transformer, due to the electromagnetic effect, its internal winding will generate a lot of heat, which needs to be cooled by transformer oil, otherwise it will cause a vicious accident of burning the main transformer. The heated transformer oil used to cool the main transformer winding will flow The radiator installed outside the main transformer is cooled by the forced air blowing of the radiator fan, and the cooled transformer oil enters the main transformer body to cool the main transformer windings, and the cycle repeats. The traditional main transformer radiator fan widely used now needs to consume a lot of electric energy for long-term operation in daily work.

Contents of the invention

The purpose of the present invention is to provide a main transformer radiator fan with photovoltaic conversion function. The device is reasonable in design, energy-saving and environmentally friendly, and can effectively solve the heat dissipation problem of the main transformer under long-term work.

The present invention includes a main transformer body and an oil flow radiator connected with the main transformer body. A main transformer radiator fan connected with a photovoltaic conversion system is installed on the oil flow radiator. The main transformer radiator fan is connected with a control module, the control module automatically turns on and off the radiator fan of the main transformer according to the temperature tested by the online oil temperature detector connected to the main transformer, and according to the preset oil temperature value.

In order to ensure the uninterrupted operation of the wind turbine, the photovoltaic conversion system includes a solar receiver, a photovoltaic converter, an energy storage device, and a power supply controller. The power supply controller in the photovoltaic conversion system is connected to the energy storage device. The energy device is connected with the solar receiver through the photovoltaic converter, and the power controller is connected with the fan of the main transformer radiator.

In order to ensure the effect of receiving solar energy, the solar receiver includes a plurality of reversible solar panels, and the lower end of each solar panel is sleeved on the rotating shaft and connected to the energy storage. The comparator controls the rotation of the rotating shaft according to the amount of energy collected by each solar panel to achieve the maximum energy collection of each solar panel. The power controller is connected with the energy storage and the fan of the main transformer radiator.

In order to effectively reduce the temperature of the main transformer body, the main transformer body is filled with transformer oil, and an online oil temperature detector is installed on the upper part of the main transformer body. The main transformer hot oil outlet valve on the upper side of the main transformer body and the main transformer cold oil inlet valve on the lower side of the main transformer body are connected to the oil inlet and outlet of the oil flow radiator. Oil pillow.

In order to further ensure the continuous operation of the fan, the power controller is also connected with a backup power supply.

The obvious advantages of the present invention are: according to the operating characteristics of the main transformer, that is, during the daytime operation, the load is heavy and the oil temperature is high, more forced air blowing and heat dissipation cooling are required for the oil flow in the internal circulation of the main transformer, and the main transformer has a low operating load at night , and the ambient temperature is low, the natural cooling effect of the main transformer is good; also in rainy days, compared with sunlight and daytime, the natural cooling effect of the main transformer is good. By using solar energy, a clean and renewable energy source, it can be safe and reliable. , Long-term and economical supply of working power for the intelligent frequency conversion fan of the main transformer radiator, except for a very small number of cases where the main transformer load is large, the oil temperature is high, and the power supply of the photovoltaic system is insufficient at this time, it is necessary to automatically switch and put into the standby external power supply , The photovoltaic conversion system of the patent of the present invention can provide sufficient and qualified electric energy to supply the intelligent frequency conversion fan of the main transformer radiator to work. Another advantage of the present invention is that it can automatically control the rotation speed of the radiator fan according to the oil temperature in the main transformer to provide suitable and optimized cooling air volume and wind pressure. When the oil temperature is high, the rotation speed is fast, and when the oil temperature is low, the rotation speed is slow. Compared with the traditional main transformer radiator fan, the patent of the present invention has the great advantages of safety, reliability, economy and energy saving, long service life, greatly reduced maintenance work and environmental protection, and is a great innovation in the manufacture and operation of the main transformer radiator fan .

Description of drawings

Fig. 1 is a schematic diagram of a main transformer radiator fan photovoltaic conversion power supply system according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of the main transformer winding and iron core immersed in transformer oil for cooling according to the embodiment of the present invention.

Fig. 3 is a schematic diagram of the working principle of forced blowing cooling of the oil flow circulation system by the radiator fan in the embodiment of the present invention.

Fig. 4 is a front installation layout diagram of the main transformer radiator fan according to the embodiment of the present invention.

Fig. 5 is a block diagram of the working principle of the automatic control of the control module according to the embodiment of the present invention.

Fig. 6 is a working main connection diagram of the control module of the embodiment of the present invention.

1-main transformer output hot oil valve; 2-inlet of oil flow radiator; 3-oil flow radiator; 4-oil flow radiator outlet; 5-main transformer radiator fan; 6-main transformer inlet cold oil valve; 7 - Online oil temperature thermometer.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

The invention relates to a main transformer radiator fan with photovoltaic conversion function, which includes a main transformer body and an oil flow radiator connected to the main transformer body, and a main transformer connected with a photovoltaic conversion system is installed on the oil flow radiator Radiator fan, the radiator fan of the main transformer is connected with a control module, and the control module measures the temperature of the main transformer through the online oil temperature detector connected to the main transformer, and adjusts the temperature of the main transformer according to the preset oil temperature value. The radiator fan is switched on and off automatically.

The photovoltaic conversion system includes a solar receiver, a photovoltaic converter, an energy storage, and a power controller. The power controller in the photovoltaic conversion system is connected to the energy storage, and the energy storage is connected to the solar energy through the photovoltaic converter. The receiver is connected, the power controller is connected with the main transformer radiator fan,

The solar receiver includes a plurality of reversible solar panels, the lower end of each solar panel is sleeved on the rotating shaft and connected to the energy storage, and a comparator is provided in the energy storage, and the comparator According to the amount of energy collected by each solar panel, the rotation of the rotating shaft is controlled to achieve the maximum energy collection of each solar panel. The power controller is connected with the energy storage and the fan of the main transformer radiator. The power controller is also connected with Standby power supply, the photovoltaic conversion system receives solar energy, performs photovoltaic conversion and power supply control, to provide sufficient and qualified electric energy supply for the radiator fan of the main transformer, when the photovoltaic conversion energy is insufficient at night or in long-term rainy days, In the rare case that the oil temperature of the main transformer is very high, the external backup power supply is automatically switched on. Due to rainy days and nights, the ambient temperature around the main transformer drops, which can effectively cool the main transformer without forced air blowing by the radiator fan. Cooling is all it takes to cool, so the chances of engaging an external backup power supply are rare. The photovoltaic conversion system is electrically connected to the radiator fan of the main transformer.

The upper part of the main transformer body is equipped with an online oil temperature detector, and the two sides of the main transformer body pass through the main transformer hot oil valve on the upper side of the main transformer body and the oil valve on the lower side of the main transformer body respectively. The cold oil inlet valve of the main transformer is connected to the oil inlet and outlet of the oil flow radiator, and an oil conservator is connected above the main transformer main body.

This embodiment provides a main transformer radiator fan with photovoltaic conversion function, including the main transformer, which is characterized in that the windings in the main transformer body will generate a large amount of heat during operation due to electromagnetic effects, and need to pass through the transformer oil To cool it, otherwise it will cause a vicious accident of burning the main transformer. The heated transformer oil used to cool the main transformer winding flows to the radiator installed outside the main transformer, and is cooled by the forced air blowing of the radiator fan. The cold transformer oil then enters the main transformer body to cool the main transformer windings, and the cycle repeats.

The specific working method is as follows: 1) Turn on the cold oil inlet valve and the hot oil outlet valve of the main transformer; 2) Turn on the photovoltaic conversion system to supply power to the fan 5 of the radiator of the main transformer; 3) Turn on the fan 5 of the radiator of the main transformer to convect the 3, the transformer oil is cooled by forced blowing; 4) Turn on the control module, and automatically control the start and stop of the main transformer radiator fan 5 according to the oil temperature in the main transformer body measured by the online oil temperature detector 7, when the oil temperature is low When the shutdown setting value is reached, the control module controls the main transformer radiator fan 5 to stop running. When the oil temperature is higher than the startup setting value, the control module controls the main transformer radiator fan 5 to turn on; 5) For multiple sets of radiator fans installed 3 of the main transformer, the control module can also automatically control the opening and closing of radiator fan units of different groups according to the oil temperature value, and control the operation of the spare radiator fan unit; 6) When the photovoltaic power supply is insufficient, the backup power supply will automatically Input, supply the working power of main transformer radiator blower fan 5.

It should be noted that in this embodiment, there are N radiators, and each radiator is provided with the radiator fan. The radiator fan can be installed below the radiator, or it can be installed horizontally facing the radiator. , where N can be 1, that is, it can be determined according to the model of the main transformer.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims (1)

1. A main transformer radiator fan with photovoltaic conversion function, comprising a main transformer body and an oil flow radiator connected to the main transformer body, characterized in that: the oil flow radiator is equipped with a photovoltaic conversion system The radiator fan of the main transformer is connected with a control module, and the control module measures the temperature through the online oil temperature detector connected to the main transformer, and controls the temperature according to the preset oil temperature value. The fan of the main transformer radiator is automatically turned on and off; the photovoltaic conversion system includes a solar receiver, a photovoltaic converter, an energy storage, and a power controller, and the power controller in the photovoltaic conversion system is connected to the energy storage , the energy storage device is connected to the solar receiver through the photovoltaic converter, the power controller is connected to the main transformer radiator fan, and the power controller is also connected to a backup power supply; the solar receiver includes multiple A reversible solar cell panel, the lower end of each solar cell panel is sleeved on the rotating shaft and connected to the energy storage, and a comparator is provided in the energy storage, and the comparator is based on the amount of energy collected by each solar cell panel Control the rotation of the rotating shaft to achieve the maximum energy collection of each solar panel. The power controller is connected with the energy storage and the fan of the main transformer radiator; the main transformer body is filled with transformer oil, and the main transformer body The upper part is equipped with an online oil temperature detector, and the two sides of the main transformer body pass through the main transformer output hot oil valve on the upper side of the main transformer body and the main transformer inlet cold oil valve on the lower side of the main transformer body. The valve is in contact with the oil inlet and outlet of the oil flow radiator, and an oil conservator is connected above the main transformer main body.