CN-122025359-A - Cooling control method, device, equipment, medium and program product based on transformer predicted oil temperature

CN122025359ACN 122025359 ACN122025359 ACN 122025359ACN-122025359-A

Abstract

The embodiment of the application provides a cooling control method, a device, equipment, a medium and a program product based on transformer predicted oil temperature, and relates to the technical field of transformers. The method comprises the steps of obtaining the current environment temperature of a transformer, the load current of the transformer and the power loss, determining a predicted oil temperature according to the current environment temperature, the load current and the power loss when preset trigger conditions are met, wherein the predicted oil temperature is used for indicating the temperature reached by oil in an oil tank of the transformer after the transformer continuously operates in the current state, controlling the operation state of cooling equipment according to the predicted oil temperature, and cooling the oil in the oil tank when the cooling equipment is in an open state. The method is used for improving the cooling effect and prolonging the service life of equipment.

Inventors

WEN ZHENXING
ZHOU YUTAO
WANG LEI
CHEN XUANJI
DENG YUNHUI
LI MINYUE
CHEN JIEHONG
ZHANG JIAN
CHEN MINGHUI
LUO HUI

Assignees

广东电网有限责任公司惠州供电局

Dates

Publication Date: 20260512
Application Date: 20260107

Claims (13)

1. A cooling control method for predicting an oil temperature based on a transformer, comprising: Acquiring the current environment temperature of a transformer, the load current of the transformer and the power loss; when a preset trigger condition is met, determining a predicted oil temperature according to the current environment temperature, the load current and the power loss, wherein the predicted oil temperature is used for indicating the temperature which is reached by oil in an oil tank of the transformer after the transformer continuously operates in the current state; And controlling the running state of the cooling equipment according to the predicted oil temperature, wherein the cooling equipment is used for cooling the oil in the oil tank when in an open state.
2. The method of claim 1, wherein the meeting a preset trigger condition comprises the current ambient temperature being greater than or equal to a preset temperature limit and/or the load of the transformer being greater than or equal to a preset load limit.
3. The method of claim 1, wherein said determining a predicted oil temperature based on said current ambient temperature, said load current, and said power loss comprises: And substituting the current environment temperature, the load current and the power loss into an objective function, and calculating to obtain the predicted oil temperature, wherein the objective function is used for indicating the functional relation between the predicted oil temperature and the environment temperature, the load current and the power loss.
4. A method according to claim 3, characterized in that before bringing the present ambient temperature, the load current and the power loss into an objective function, the method further comprises: The method comprises the steps of obtaining historical operation data of the transformer, wherein the historical operation data comprise actual oil temperature information, actual current information and actual power loss information of the transformer at different environment temperatures; and processing the historical operation data, and fitting to obtain the objective function.
5. The method of claim 1, wherein controlling the operating state of the cooling apparatus based on the predicted oil temperature comprises: if the predicted oil temperature is determined to be greater than a first temperature threshold, controlling the cooling equipment to be in an on state; and if the predicted oil temperature is less than or equal to a second temperature threshold value, controlling the cooling equipment to be in a closed state after the preset time period.
6. The method according to any one of claims 1 to 5, wherein the cooling apparatus comprises a water making device, a cooling device, a spray atomizing device, a circulating water recovery device and a water tower, wherein the water making device is respectively connected with the water tower and the cooling device through a pipeline, the spray atomizing device is connected with the cooling device through a pipeline, and the circulating water recovery device is connected with the water tower through a pipeline; The water producing device is used for taking water from the water tower and carrying out water treatment so as to produce water with resistivity larger than a preset threshold value, the cooling device is used for cooling the water produced by the water producing device to obtain cooling water, the spray atomizing device is used for atomizing the cooling water to obtain atomized water vapor, the circulating water recovery device is used for recovering the water flowing down from the radiator of the transformer and returning the water to the water tower, and the water tower is used for storing water.
7. The method of claim 6, wherein the spray atomizer comprises a spray pipe and a plurality of spray nozzles, and the heat sink is provided with a plurality of heat sinks arranged in parallel; The spray pipeline is arranged above the radiator, the spray nozzle is arranged on the spray pipeline, and at least one spray nozzle is arranged between every two adjacent cooling fins.
8. The method of claim 6, wherein the circulating water recovery device is installed at the bottom of the radiator and is connected by a mechanical structure to realize a turning function, wherein the circulating water recovery device is positioned at a right-side-up position when being started for use, and is used for recovering water flowing down from the radiator, and is turned to a position where water is not recovered again by the mechanical structure when being shut down for use.
9. The method of claim 6, wherein the water tower is further connected to an external water source by a pipe, wherein a ball-cock valve water level controller is provided in the water tower, and wherein the ball-cock valve water level controller is configured to control the water tower to be connected to the external water source to make up the external water source for the water tower when the water level in the water tower is lower than a target value.
10. A cooling control device for predicting an oil temperature based on a transformer, comprising: The device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the current environment temperature of a transformer, the load current of the transformer and the power loss; The processing unit is used for determining predicted oil temperature according to the current environment temperature, the load current and the power loss when a preset trigger condition is met, wherein the predicted oil temperature is used for indicating the temperature which is reached by the oil in the oil tank of the transformer after the transformer continuously operates in the current state; And the control unit is used for controlling the running state of the cooling equipment according to the predicted oil temperature, and the cooling equipment is used for cooling the oil in the oil tank when in an open state.
11. An electronic device is characterized by comprising a memory and a processor; The memory stores computer-executable instructions; the processor executing computer-executable instructions stored in the memory, causing the processor to perform the method of any one of claims 1-9.
12. A computer readable storage medium having stored therein computer executable instructions which when executed by a processor are adapted to carry out the method of any one of claims 1-9.
13. A computer program product comprising a computer program which, when executed by a processor, implements the method of any of claims 1-9.

Description

Cooling control method, device, equipment, medium and program product based on transformer predicted oil temperature Technical Field The application relates to the technical field of transformers, in particular to a cooling control method, a cooling control device, cooling control equipment, cooling control media and cooling control program products based on transformer predicted oil temperature. Background As power demand continues to increase, transformers are critical devices in power systems, and their operational stability and efficiency are particularly important. The transformer generates a lot of heat during operation, and especially under high temperature environment and high load condition, the increase of oil temperature may cause the ageing of insulating material, thereby influencing the service life of the transformer. In the prior art, the start-up and shut-down of the cooling device is usually controlled on the basis of a simple temperature threshold. In the running process of the transformer, the actual oil temperature is acquired in real time, and then the cooling equipment is started or closed according to the relation between the actual oil temperature and a preset temperature threshold value. However, the cooling mode has obvious hysteresis quality to a certain extent, and the cooling is started when the actual oil temperature exceeds the threshold value, so that the cooling effect is not only influenced, but also the transformer can run for a long time at high temperature, the fault risk is increased, and the service life of the transformer is also influenced. Disclosure of Invention The embodiment of the application provides a cooling control method, a device, equipment, a medium and a program product for predicting oil temperature based on a transformer, which are used for achieving the effects of improving cooling effect and prolonging service life of equipment. In a first aspect, an embodiment of the present application provides a cooling control method for predicting an oil temperature based on a transformer, including: Acquiring the current environment temperature of a transformer, the load current of the transformer and the power loss; when a preset trigger condition is met, determining a predicted oil temperature according to the current environment temperature, the load current and the power loss, wherein the predicted oil temperature is used for indicating the temperature which is reached by oil in an oil tank of the transformer after the transformer continuously operates in the current state; And controlling the running state of the cooling equipment according to the predicted oil temperature, wherein the cooling equipment is used for cooling the oil in the oil tank when in an open state. In a possible implementation manner, the condition of meeting the preset triggering condition includes that the current ambient temperature is greater than or equal to a preset temperature limit value and/or that the load of the transformer is greater than or equal to a preset load limit value. In a possible implementation manner, the determining the predicted oil temperature according to the current ambient temperature, the load current and the power loss includes: And substituting the current environment temperature, the load current and the power loss into an objective function, and calculating to obtain the predicted oil temperature, wherein the objective function is used for indicating the functional relation between the predicted oil temperature and the environment temperature, the load current and the power loss. In one possible embodiment, before bringing the present ambient temperature, the load current and the power loss into an objective function, the method further comprises: The method comprises the steps of obtaining historical operation data of the transformer, wherein the historical operation data comprise actual oil temperature information, actual current information and actual power loss information of the transformer at different environment temperatures; and processing the historical operation data, and fitting to obtain the objective function. In a possible embodiment, the controlling the operation state of the cooling device according to the predicted oil temperature includes: if the predicted oil temperature is determined to be greater than a first temperature threshold, controlling the cooling equipment to be in an on state; and if the predicted oil temperature is less than or equal to a second temperature threshold value, controlling the cooling equipment to be in a closed state after the preset time period. In one possible implementation mode, the cooling device comprises a water making device, a cooling device, a spray atomization device, a circulating water recovery device and a water tower, wherein the water making device is respectively connected with the water tower and the cooling device through pipelines, the spray atomization device is connected with the coo