Intelligent consumption reduction control system for oil cooling at rear end of transformer

Abstract

The utility model relates to an intelligent consumption reduction control system for oil cooling at the rear end of a transformer. The intelligent consumption reduction control system is characterized by comprising an oil way cooling control module, a programmable control module and an interaction module, a plurality of groups of signals are collected through a programmable controller for centralized processing, starting and stopping of a compressor are controlled, the temperature of cooling oil is controlled, and the signals are sent to a transformer through a circulating oil pump, so that temperature control of the transformer is achieved, and meanwhile the signals are transmitted to a human-computer interaction end and a cloud end in a communication mode; man-machine interaction of local control, control parameter setting, system operation state and alarm query processing is realized through the man-machine interaction end; the same function of a human-computer interface is realized by information of the system through cloud unvarnished transmission via an internet computer and a mobile phone APP; intelligent control and unattended operation of transformer oil cooling are achieved, the system can be widely applied to oil-cooled transformers in various fields, and normal operation of the transformers is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer cooling control, and in particular to an intelligent consumption reduction control system for transformer rear end oil cooling. Background Art

[0002] Transformers are one of the most critical pieces of equipment in power systems, responsible for voltage conversion, power distribution, and transmission. Therefore, the proper functioning of transformers is crucial for the safe, reliable, high-quality, and economical operation of power systems. Transformer failures and accidents must be minimized and prevented to the greatest extent possible.

[0003] Especially in the extreme summer ambient temperature of transformers, the oil temperature cooling system is prone to oil temperature exceeding the limit. Common transformer oil temperature cooling methods include oil-immersed self-cooling, oil-immersed air cooling and forced oil circulation. The control of these cooling methods can only be operated on-site. When the equipment fails, it can only be monitored on-site and remote monitoring and operation cannot be achieved. In addition, a dedicated person is required to be responsible for operation and management. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an intelligent consumption reduction control system for transformer rear-end oil cooling, which can solve the problem that traditional transformer cooling oil cooling control cannot realize remote human-computer interactive control.

[0005] In order to solve the above technical problems, this practical technical solution is: an intelligent consumption reduction control system for transformer rear-end oil cooling, the innovation of which is that it includes an oil circuit cooling control module, a programmable control module and an interactive module;

[0006] The oil circuit cooling control module includes a power supply circuit, a 24V DC power supply, a phase sequence protector, a compressor, an oil pump motor and a fan; the power supply circuit is provided with three live wires and one neutral wire, and a first circuit breaker is provided on the three live wires; the live wire end of the 24V DC power supply is connected to one of the live wires through a second circuit breaker, and the neutral wire end of the 24V DC power supply is connected to the neutral wire of the power supply circuit; the phase sequence protector has three live wire ends, and is respectively connected to the three live wires of the power supply circuit through wires; the compressor, oil pump motor and fan motor are respectively connected to the power supply circuit through a thermal relay, and the compressor, oil pump motor and fan motor are overload protected by the thermal relay; contactors are provided on the lines between the compressor, oil pump motor and fan motor and the thermal relays connected to them respectively;

[0007] The programmable control module includes a programmable controller, a flow switch, a low-pressure alarm sensor, a high-pressure alarm sensor, an oil outlet temperature sensor, and an oil return port temperature sensor; the programmable controller input end is provided with a 24V DC power supply connection port, a common port, and a spare port; the programmable controller input end is provided with a compressor overload detection port, an oil pump motor overload detection port, and a fan overload detection port, and is electrically connected to three thermal relays; the programmable controller input end is also provided with a flow switch port, a low-pressure alarm port, a high-pressure alarm port, a phase sequence alarm port, an oil outlet temperature detection port, and an oil return port temperature detection port, and is electrically connected to the flow switch, the low-pressure alarm sensor, the high-pressure alarm sensor, the oil outlet temperature sensor, and the oil return port temperature sensor respectively;

[0008] The output end of the programmable controller is provided with several ports electrically connected to the neutral line on the power supply circuit, as well as three ports electrically connected to the contactors of the circuits where the compressor, oil pump motor and fan motor are located; the output end of the programmable controller is provided with a run indication port, a stop indication port and an audible and visual alarm port, and the three ports are electrically connected to the run indicator light, the stop indicator light and the audible and visual alarm; the output end of the programmable controller is also provided with a human-computer interaction port and a cloud interaction port;

[0009] The interaction module includes a human-computer interaction terminal, a remote mobile phone interaction terminal and a remote computer interaction terminal; the human-computer interaction terminal is electrically connected to the human-computer interaction port on the output end of the programmable controller, and the oil circuit cooling control module is controlled on-site through the human-computer interaction terminal; the remote mobile phone interaction terminal and the remote computer interaction terminal are both connected to the cloud through the network, and a remote connection is established on the cloud with the cloud interaction port of the programmable controller through the network, so that the remote mobile phone interaction terminal and the remote computer interaction terminal can remotely control the oil circuit cooling control module.

[0010] Furthermore, the remote mobile phone interaction terminal, the remote computer interaction terminal and the cloud interaction terminal on the programmable controller output terminal all establish cloud transparent transmission in the cloud; through cloud transparent transmission, the system information is transmitted to the computer and mobile phone APP via the Internet to achieve the same function as the human-computer interaction terminal.

[0011] Furthermore, the human-computer interaction terminal is used for human-computer interaction of control parameter setting, system operation status and alarm query processing.

[0012] Furthermore, the compressor is used for refrigeration; the oil pump motor is used to connect to a circulating oil pump; and the fan motor is used to connect to a cooling fan to dissipate heat from the compressor.

[0013] The advantages of this utility are:

[0014] 1) This utility collects the following signals through a programmable controller: power phase sequence, transformer flow, pressure sensor, temperature sensor, compressor current detection model, oil pump current detection model, and cooling fan current detection signals for centralized processing, and controls the start and stop of the compressor to control the temperature of the cooling oil, which is then delivered to the transformer through a circulating oil pump, thereby achieving transformer temperature control. At the same time, the signals are transmitted to the human-computer interaction terminal and the cloud through communication. The human-computer interaction terminal realizes local control, control parameter setting, system operation status, and alarm query processing. Through cloud transparent transmission, the system information is transmitted via the Internet computer and mobile phone APP to achieve the same functions of the human-computer interface. Intelligent control and unattended operation of transformer oil cooling are realized, and the system can be widely used in oil-cooled transformers in various fields to ensure the normal operation of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementations.

[0016] Figure 1 This is the main circuit schematic diagram of the practical transformer rear-end oil cooling intelligent consumption reduction control system.

[0017] Figure 2 This is the input schematic diagram of the programmable controller of this practical transformer rear-end oil cooling intelligent consumption reduction control system.

[0018] Figure 3 This is the output principle diagram of the transformer controller of the practical transformer rear end oil cooling intelligent consumption reduction control system.

[0019] Figure 4 This is the layout diagram of the electrical components of the transformer controller for the practical intelligent consumption reduction control system for transformer rear-end oil cooling. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions and advantages of the present embodiment more clear, the technical solutions of the present embodiment will be clearly and completely described below in conjunction with the drawings of the present embodiment. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Generally, the components of the present embodiment described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 4The transformer rear end oil cooling intelligent consumption reduction control system shown includes an oil circuit cooling control module 1, a programmable control module 2 and an interactive module 3.

[0023] The oil circuit cooling control module 1 includes a power supply circuit 11, a 24V DC power supply 12, a phase sequence protector 13, a compressor 14, an oil pump motor 15 and a fan 16; the power supply circuit 11 is provided with three live wires and one neutral wire, and a first circuit breaker 17 is provided on the three live wires; the live wire end of the 24V DC power supply 12 is connected to one of the live wires through a second circuit breaker 18, and the neutral wire end of the 24V DC power supply 12 is connected to the neutral wire of the power supply circuit 11; the phase sequence protector 13 has three live wire ends, and is respectively connected to the three live wires of the power supply circuit 11 through wires; the compressor 14, the oil pump motor 15 and the fan motor 16 are respectively connected to the power supply circuit 11 through a thermal relay 19, and the thermal relay 19 is used to protect the compressor 14, the oil pump motor 15 and the fan motor 16 from overload; a contactor 10 is provided on the lines between the compressor 14, the oil pump motor 15 and the fan motor 16 and the thermal relays 19 connected to them.

[0024] The programmable control module 2 includes a programmable controller 21, a flow switch 22, a low pressure alarm sensor 23, a high pressure alarm sensor 24, an oil outlet temperature sensor 25 and an oil return port temperature sensor 26; the input end of the programmable controller 21 is provided with a 24V DC power supply wiring port, a common port and a spare port; the input end of the programmable controller is provided with a compressor overload detection port, an oil pump motor overload detection port and a fan overload detection port, and is electrically connected to three thermal relays; the input end of the programmable controller is also provided with a flow switch port, a low pressure alarm port, a high pressure alarm port, a phase sequence alarm port, an oil outlet temperature detection port and an oil return port temperature detection port, and is electrically connected to the flow switch 22, the low pressure alarm sensor 23, the high pressure alarm sensor 24, the oil outlet temperature sensor 25 and the oil return port temperature sensor 26 respectively.

[0025] The output end of the programmable controller 21 is provided with several ports electrically connected to the neutral line on the power supply circuit, as well as three ports electrically connected to the contactor 10 of the circuit where the compressor 14, the oil pump motor 15 and the fan motor 16 are located; the output end of the programmable controller 21 is provided with an operation indication port, a stop indication port and an audible and visual alarm port, and the three ports are electrically connected to the operation indicator light, the stop indicator light and the audible and visual alarm; the output end of the programmable controller is also provided with a human-computer interaction port and a cloud interaction port.

[0026] The interaction module 3 includes a human-computer interaction terminal 31, a remote mobile phone interaction terminal 32 and a remote computer interaction terminal 33; the human-computer interaction terminal 31 is electrically connected to the human-computer interaction port on the output end of the programmable controller 21, and the oil circuit cooling control module 1 is controlled on-site through the human-computer interaction terminal 31; the remote mobile phone interaction terminal 32 and the remote computer interaction terminal 33 are both connected to the cloud through the network, and a remote connection is established on the cloud with the cloud interaction port of the programmable controller 21 through the network, so that the remote mobile phone interaction terminal and the remote computer interaction terminal can remotely control the oil circuit cooling control module.

[0027] The remote mobile phone interaction terminal 32, the remote computer interaction terminal 33 and the cloud interaction terminal on the programmable controller output terminal all establish cloud transparent transmission in the cloud; through cloud transparent transmission, the system information is transmitted to the computer and mobile phone APP via the Internet to achieve the same function as the human-computer interaction terminal.

[0028] The human-computer interaction terminal 31 is used for human-computer interaction for controlling parameter settings, system operation status and alarm query processing.

[0029] The compressor 14 is used for cooling; the oil pump motor 15 is used to connect to the circulating oil pump; and the fan motor 16 is used to connect to the cooling fan to dissipate heat from the compressor.

[0030] When a system failure occurs, it can be queried and processed through the local human-computer interaction terminal, and can be queried and notified to relevant personnel through the Internet computer; relevant alarm information can be delivered through the mobile phone APP of the system-related management and operation personnel; relevant personnel can be notified through QQ and mobile phone text messages.

[0031] The control system is mainly used in industrial transformers. The larger the capacity of the industrial transformer, the higher the basic electricity cost, and the increase in transformer oil temperature will reduce the transformer's power and service life. The use of this control system can effectively reduce the oil temperature, maximize the power of the transformer, and thus reduce energy consumption.

[0032] The working principle of this utility model is: through the programmable controller, the power phase sequence, transformer flow, pressure sensor, temperature sensor, compressor current detection model, oil pump current detection model and cooling fan current detection signal are collected for centralized processing, and the start and stop of the compressor are controlled to control the temperature of the cooling oil, which is delivered to the transformer through the circulating oil pump, thereby achieving the temperature control of the transformer, and at the same time transmitted to the human-computer interaction end and the cloud through communication; the human-computer interaction end is used to realize local control, control parameter setting, system operation status and alarm query processing; the system information is transmitted through the cloud through the Internet computer and mobile phone APP to realize the same function of the human-computer interface; the intelligent control and unattended operation of the transformer oil cooling are realized, and the system can be widely used in oil-cooled transformers in various fields to ensure the normal operation of the transformer.

[0033] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall fall within the scope of the present invention to be protected.

Claims

1. An intelligent consumption reduction control system for transformer rear end oil cooling, characterized by: Including oil circuit cooling control module, programmable control module and interactive module; The oil circuit cooling control module includes a power supply circuit, a 24V DC power supply, a phase sequence protector, a compressor, an oil pump motor and a fan; the power supply circuit is provided with three live wires and one neutral wire, and a first circuit breaker is provided on the three live wires; the live wire end of the 24V DC power supply is connected to one of the live wires through a second circuit breaker, and the neutral wire end of the 24V DC power supply is connected to the neutral wire of the power supply circuit; the phase sequence protector has three live wire ends, and is respectively connected to the three live wires of the power supply circuit through wires; the compressor, oil pump motor and fan motor are respectively connected to the power supply circuit through a thermal relay, and the compressor, oil pump motor and fan motor are overload protected by the thermal relay; contactors are provided on the lines between the compressor, oil pump motor and fan motor and the thermal relays connected to them respectively; The programmable control module includes a programmable controller, a flow switch, a low-pressure alarm sensor, a high-pressure alarm sensor, an oil outlet temperature sensor, and an oil return port temperature sensor; the programmable controller input end is provided with a 24V DC power supply connection port, a common port, and a spare port; the programmable controller input end is provided with a compressor overload detection port, an oil pump motor overload detection port, and a fan overload detection port, and is electrically connected to three thermal relays; the programmable controller input end is also provided with a flow switch port, a low-pressure alarm port, a high-pressure alarm port, a phase sequence alarm port, an oil outlet temperature detection port, and an oil return port temperature detection port, and is electrically connected to the flow switch, the low-pressure alarm sensor, the high-pressure alarm sensor, the oil outlet temperature sensor, and the oil return port temperature sensor respectively; The output end of the programmable controller is provided with several ports electrically connected to the neutral line on the power supply circuit, as well as three ports electrically connected to the contactors of the circuits where the compressor, oil pump motor and fan motor are located; the output end of the programmable controller is provided with a run indication port, a stop indication port and an audible and visual alarm port, and the three ports are electrically connected to the run indicator light, the stop indicator light and the audible and visual alarm; the output end of the programmable controller is also provided with a human-computer interaction port and a cloud interaction port; The interaction module includes a human-computer interaction terminal, a remote mobile phone interaction terminal and a remote computer interaction terminal; the human-computer interaction terminal is electrically connected to the human-computer interaction port on the output end of the programmable controller, and the oil circuit cooling control module is controlled on-site through the human-computer interaction terminal; the remote mobile phone interaction terminal and the remote computer interaction terminal are both connected to the cloud through the network, and a remote connection is established on the cloud with the cloud interaction port of the programmable controller through the network, so that the remote mobile phone interaction terminal and the remote computer interaction terminal can remotely control the oil circuit cooling control module.

2. The intelligent consumption reduction control system for transformer rear end oil cooling according to claim 1 is characterized in that: The remote mobile phone interaction terminal, remote computer interaction terminal and cloud interaction terminal on the programmable controller output terminal all establish cloud transparent transmission in the cloud; through cloud transparent transmission, the system information is transmitted to the computer and mobile phone APP via the Internet to achieve the same function as the human-computer interaction terminal.

3. The intelligent consumption reduction control system for transformer rear end oil cooling according to claim 1 is characterized in that: The human-computer interaction terminal is used for human-computer interaction of control parameter setting, system operation status and alarm query processing.

4. The intelligent consumption reduction control system for transformer rear end oil cooling according to claim 1 is characterized in that: The compressor is used for refrigeration; the oil pump motor is used to connect to the circulating oil pump; and the fan motor is used to connect to the cooling fan to dissipate heat from the compressor.

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