Transformer cooling system control device, the technical problem to be solved by the control device is to make the transformer use more energy-saving and low environmental noise.
Transformer Cooling System Control Device
Transformer cooling system control device Overview
Due to the loss of heat during the operation of the ultra-high voltage large-scale power transformer, the heat flows into the cooler from the high temperature at the top of the transformer tank through the transformer oil pump, and the fin tube in the cooler is cooled by the fan to reduce the temperature rise, and then flows back into the bottom of the transformer. In the fuel tank. After the cooler heat exchange operation, keep the temperature rise of the transformer within the allowable conditions.
The traditional transformer chiller system consists of a cooler body, a fan, an oil pump, an oil flow relay, and a control box. The cooler body is usually made of copper-aluminum composite pipe structure. The fan is a low-noise fan with no shifting. The poles are commonly used to reduce noise. As long as the fan is started, the fan rotates at a fixed number of poles. The oil pump is a common submersible pump. It is also rotated at a fixed speed after starting, usually 900 rpm. The oil flow relay adopts the traditional mechanical baffle structure. As long as the oil flow reaches 85% of the rated working condition, it is displayed as open; between 85% and 45%, the pointer sways left and right; below 45%, it is displayed as off, and the signal cannot be Control box, computer connection. Due to the long-term rotation of the baffle in the oil pipe, the baffle shaft breaks frequently, resulting in power failure maintenance of the transformer, resulting in great losses, hundreds of thousands less, and millions of dollars.
In view of the above problems, the prior Chinese patent document discloses a control method and apparatus for a transformer cooling system, the system including a transformer submersible pump, a fan and an intelligent control device, the method comprising the following steps: (a ) Run the submersible pump of the transformer cooling system working group; (b) Determine the number of fans to be input according to the oil temperature of the transformer. The control method and the control device of the transformer cooling system of the present invention can adapt to changes in ambient temperature in different seasons, effectively adjust the temperature of the transformer, and reduce the energy consumption of the cooling fan motor, but the control method and the control device of the transformer cooling system are insufficient in use. Energy saving, and the fan has a large noise, which has a great impact on the environment during use, especially at night, which will affect people's lives.
Our company provides a transformer cooling system control device, which solves the problem that the existing technology is not energy-saving in use and has a great impact on the environment. The transformer cooling system control device, the transformer cooling system comprises a plurality of sets of coolers, each set of coolers is equipped with a fan and an oil pump, the control device comprises a controller, a contactor and a temperature sensor corresponding to each group of coolers, a temperature sensor and The input ports of the controller are connected. Each group of coolers is equipped with relays for respectively disconnecting or connecting the fan power supply circuit and the oil pump power supply circuit. The control coils of each contactor and relay are connected to the power supply at one end, and the other end is connected to different output ports of the controller. The switch contacts of the contactors and the relays are connected in series to the power supply circuit of the corresponding cooler, and the input port of the controller is connected with the clock chip. The control device is used to make the transformer use more energy-saving and has low environmental noise.
Transformer cooling system control device Characteristic
Compared with the prior art, the transformer cooling system control device has the following advantages:
1. The transformer cooling system control device passes the clock chip and the relay. During the daytime, the cooling system of the transformer is mainly driven by the fan and turned into the oil pump at night, which reduces the environmental noise and effectively improves the fan and the oil pump. Reliable life for alternating operation.
2. The fan and oil pump installed in each group of coolers in the control system of the transformer cooling system are equipped with a speed-regulating fan and a speed-regulating oil pump that can be automatically adjusted. When the transformer is running, each group can be changed according to the temperature rise value. The fan of the cooler can automatically adjust the speed of the oil pump and automatically decelerate to save energy. In addition, the speed control oil pump is used to cancel the use of the oil flow relay, which saves the cost and eliminates the failure of the oil flow relay. A hidden danger to the transformer.
3. The transformer cooling system control device is reasonable in design, timely and reliable in monitoring and can automatically adjust the temperature. It has a wide application range, is easy to promote and implement, and has good economic benefits.
Transformer cooling system control device structure
1, controller; 2, contactor; 3, relay; 4, clock chip; 5, cooler; 6, fan; 7, oil pump; 8, temperature sensor; 9, data communication module