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

Abstract

The invention 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 invention 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] Transformer is one of the most critical equipment in the power system, which is responsible for voltage conversion, power distribution and transmission. Therefore, the normal operation of the transformer is an important guarantee for the safe, reliable, high-quality and economical operation of the power system. The occurrence of transformer failures and accidents must be prevented and reduced to the greatest extent possible.

[0003] Especially in the extreme ambient temperature of the transformer in summer, the oil temperature cooling system is prone to oil temperature exceeding the limit; the commonly used 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, and when the equipment fails, it can only be monitored on-site, and remote monitoring and operation cannot be achieved; and a dedicated person is required to be responsible for operation and management. Summary of the invention

[0004] The technical problem to be solved by the present invention 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, the technical solution of the present invention is: an intelligent consumption reduction control system for transformer rear end oil cooling, the innovation of which is: comprising an oil circuit cooling control module, a programmable control module and an 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; three live wires and one neutral wire are arranged on the power supply circuit, and a first circuit breaker is arranged 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, which are respectively connected to the three live wires of the power supply circuit through electric wires; the compressor, the oil pump motor and the fan motor are respectively connected to the power supply circuit through a thermal relay, and the compressor, the oil pump motor and the fan motor are overload protected by the thermal relay; contactors are arranged on the lines between the compressor, the oil pump motor and the 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 wiring 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 a plurality of ports electrically connected to the neutral line on the power supply circuit, and three ports electrically connected to the contactors of the lines where the compressor, the oil pump motor and the fan motor are located; the output end of the programmable controller is provided with a running indication port, a stop indication port and an audible and visual alarm port, and the three ports are electrically connected to the running 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 terminal 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 in 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.

[0006] 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.

[0007] Furthermore, the human-computer interaction terminal is used for human-computer interaction of control parameter setting, system operation status and alarm query processing.

[0008] 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.

[0009] The advantages of the present invention are: 1) The present invention 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 signal for centralized processing, and controls the start and stop of the compressor to control the temperature of the cooling oil, which is delivered to the transformer through a circulating oil pump, thereby achieving transformer temperature control, and at the same time, is transmitted to the human-computer interaction end and the cloud through a communication method; local control, control parameter setting, system operation status, and alarm query processing are realized through the human-computer interaction end; the system information is transmitted through the cloud through the Internet computer and mobile phone APP to achieve the same function 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

[0010] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0011] Figure 1 This is a main circuit schematic diagram of the transformer rear end oil cooling intelligent consumption reduction control system of the present invention.

[0012] Figure 2 This is a schematic diagram of the programmable controller input of the transformer rear end oil cooling intelligent consumption reduction control system of the present invention.

[0013] Figure 3 This is a schematic diagram of the output of a variable controller of the intelligent consumption reduction control system for transformer rear end oil cooling of the present invention.

[0014] Figure 4 This is a layout diagram of electrical components of a convertible controller of the transformer rear end oil cooling intelligent consumption reduction control system of the present invention. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] 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 invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] 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.

[0018] 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; three live wires and one neutral wire are arranged on the power supply circuit 11, and a first circuit breaker 17 is arranged 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 electric 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 compressor 14, the oil pump motor 15 and the fan motor 16 are overload protected by the thermal relay 19; and a contactor 10 is arranged 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 respectively.

[0019] 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; a 24V DC power supply wiring port, a common port and a spare port are provided on the input end of the programmable controller 21; a compressor overload detection port, an oil pump motor overload detection port and a fan overload detection port are provided on the input end of the programmable controller, and are electrically connected to three thermal relays; 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 are also provided on the input end of the programmable controller, and are 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.

[0020] The output end of the programmable controller 21 is provided with several ports electrically connected to the neutral line on the power supply circuit, and 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.

[0021] 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 in 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.

[0022] The remote mobile phone interaction terminal 32, the remote computer interaction terminal 33 and the cloud interaction terminal on the output terminal of the programmable controller 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.

[0023] The human-machine interaction terminal 31 is used for human-machine interaction of control parameter setting, system operation status and alarm query processing.

[0024] The compressor 14 is used for refrigeration; 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 the heat of the compressor.

[0025] 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 an 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.

[0026] The control system is mainly used in industrial transformers. The larger the capacity of the industrial transformer, the higher the basic electricity fee, and the increase in transformer oil temperature will reduce the power and service life of the transformer. The use of this control system can effectively reduce the oil temperature, maximize the power of the transformer, and thus reduce energy consumption.

[0027] The working principle of the present invention 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 temperature, 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 the communication method; the human-computer interaction of local control, control parameter setting, system operation status and alarm query processing is realized through the human-computer interaction end; the system information is transmitted through the Internet computer and mobile phone APP through the cloud 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.

[0028] 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 be subject to various changes and improvements, and these changes and improvements shall all fall within the scope of the present invention claimed for protection.

Claims

1. An intelligent consumption reduction control system for transformer rear end oil cooling, characterized in that: It includes 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; three live wires and one neutral wire are arranged on the power supply circuit, and a first circuit breaker is arranged 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, which are respectively connected to the three live wires of the power supply circuit through electric wires; the compressor, the oil pump motor and the fan motor are respectively connected to the power supply circuit through a thermal relay, and the compressor, the oil pump motor and the fan motor are overload protected by the thermal relay; contactors are arranged on the lines between the compressor, the oil pump motor and the 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 wiring 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 a plurality of ports electrically connected to the neutral line on the power supply circuit, and three ports electrically connected to the contactors of the lines where the compressor, the oil pump motor and the fan motor are located; the output end of the programmable controller is provided with a running indication port, a stop indication port and an audible and visual alarm port, and the three ports are electrically connected to the running 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 terminal 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 in 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, 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.

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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