Intelligent ventilation control system for transformer substation

Abstract

The utility model discloses an intelligent ventilation control system for a transformer substation. The system comprises a control module, a sensor module, a fan power module and a communication module, the sensor module comprises a temperature sensor module, a wind speed sensor module, a wind pressure sensor module and a gas sensor module; the temperature sensor module, the wind speed sensor module, the wind pressure sensor module and the gas sensor module are connected with the control module based on the communication module; the fan power module comprises a PWM control module, the PWM control module is connected with the communication module, and a first PID operation module and a second PID operation module are arranged in the PWM control module. According to the utility model, through the multi-sensor data multi-source fusion technology and the PID control adjustment technology, intelligent control of the ventilation effect of the fan of the transformer substation is realized, the ventilation environment of the transformer substation is optimized, and the intelligent ventilation and heat dissipation efficiency of the transformer substation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of substation management, in particular to an intelligent ventilation control system for a substation. Background Art

[0002] With the rapid development of my country's social and economic level, the importance of the power system in life is increasing. The construction of a large-scale smart grid is a key link in the development of the power system. As an important part of the smart grid, the substation plays a key role in the operation of the smart grid. The substation is set in each node of the smart grid, which is equipped with many power equipment, which plays the role of power conversion, power distribution, power protection, control, metering, etc., and is an indispensable part of the smart grid. However, with the long-term operation of the substation, a lot of heat will be generated, causing the temperature to rise, which will cause the power equipment to overheat and malfunction, and even cause a fire. The current solution is to install conventional ventilation fan equipment to operate at a fixed power to dissipate heat, but the disadvantage of this conventional ventilation fan equipment is that the power cannot be adjusted according to the actual heat dissipation situation, resulting in general ventilation effect. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art. The utility model provides an intelligent ventilation control system for a substation, which realizes intelligent control of the ventilation effect of the fan of the substation through multi-sensor data multi-source fusion technology and PID control and regulation technology, optimizes the ventilation environment of the substation, and improves the efficiency of intelligent ventilation and heat dissipation of the substation.

[0004] The utility model provides an intelligent ventilation control system for a substation, the system comprising a control module, a sensor module, a fan power module, and a communication module;

[0005] The control module is connected to the communication module, the communication module is respectively connected to the sensor module and the fan power module, and the fan power module is connected to the fan;

[0006] The sensor module includes a temperature sensor module, a wind speed sensor module, a wind pressure sensor module, and a gas sensor module, and the temperature sensor module, the wind speed sensor module, the wind pressure sensor module, and the gas sensor module are connected to the control module based on the communication module;

[0007] The fan power module comprises a PWM control module, the PWM control module is connected to the communication module, and the PWM control module has a first PID operation module and a second PID operation module built therein.

[0008] Furthermore, the control module includes a central processing unit, a clock circuit, an interface module, and a memory. The central processing unit is connected to the clock circuit, the interface module, and the memory respectively, and the interface module is connected to the communication module.

[0009] Furthermore, the control module also includes an early warning module, and the early warning module is connected to the central processing unit.

[0010] Furthermore, the gas sensor module is a sulfur hexafluoride sensor module.

[0011] Furthermore, the fan power module also includes a speed regulation module and a fan current detection module, and the speed regulation module and the fan current detection module are connected to the PWM control module.

[0012] Furthermore, the communication module is compatible with RS232, RS485, Ethernet, RS422, USB, and CAN communication interfaces.

[0013] Furthermore, the system also includes a manual operation module, and the manual operation module is connected to the control module.

[0014] Furthermore, the system also includes a display module, and the display module is connected to the control module.

[0015] The utility model provides a substation intelligent ventilation control system, which is provided with multiple sensors to collect multiple sensor data, and performs multi-source fusion processing on the multi-sensor data based on the control module to generate a control signal to control the fan power module, and a dual PID operation module is built in the PWM control module of the fan power module, which can consider the similarities and differences of the multi-segment PID parameters of the fan in the working range, and the dual PID operation module can adaptively select a more appropriate adjustment method to realize automatic operation adjustment, improve the efficiency of ventilation and heat dissipation, and has extremely high feasibility and practicality; a communication module is set to complete the communication connection between the control module and the sensor module and the fan power module, and a display module is set to display the intelligent ventilation control information, so as to realize the intelligent control of the ventilation effect of the fan of the substation, optimize the ventilation environment of the substation, improve the efficiency of the intelligent ventilation and heat dissipation of the substation, improve the safety and reliability of the operation of the power equipment of the substation, and promote the standardization, informatization, digitization and intelligence of the construction of the intelligent substation, which has a very broad application prospect and conforms to the future development trend of the intelligent substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a module architecture diagram of the substation intelligent ventilation control system in the embodiment of the utility model. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] An embodiment of the utility model provides an intelligent ventilation control system for a substation, the system comprising a control module, a sensor module, a fan power module, and a communication module; the control module is connected to the communication module, the communication module is respectively connected to the sensor module and the fan power module, and the fan power module is connected to the fan.

[0020] In an optional implementation of this embodiment, Figure 1 As shown, Figure 1 The module architecture diagram of the intelligent ventilation control system for a substation in an embodiment of the utility model is shown.

[0021] In an optional implementation of this embodiment, the sensor module includes a temperature sensor module, a wind speed sensor module, a wind pressure sensor module, and a gas sensor module, and the temperature sensor module, wind speed sensor module, wind pressure sensor module, and gas sensor module are connected to the control module based on the communication module.

[0022] Specifically, the temperature sensor module is used to collect temperature data when the fan is running, the wind speed sensor module is used to collect wind speed data when the fan is running, the wind pressure sensor module is used to collect wind pressure data when the fan is running, and the gas sensor module is used to collect gas composition data when the fan is running.

[0023] In an optional implementation of this embodiment, the gas sensor module is a sulfur hexafluoride (SF6) sensor module, and the sulfur hexafluoride sensor module is used to collect the sulfur hexafluoride (SF6) concentration value when the fan is running.

[0024] Specifically, sulfur hexafluoride is an artificial inert gas used in power systems, which has good electrical insulation and arc extinguishing properties. However, it is prone to leakage during long-term use, leading to safety problems. In this embodiment, a sulfur hexafluoride sensor is provided to detect sulfur hexafluoride, detect leakage problems in a timely manner, and take corresponding measures.

[0025] Furthermore, in this embodiment, the types of sulfur hexafluoride sensors that can be used include high-frequency ionization type, laser photoacoustic type, ultrasonic type, laser spectroscopy type, infrared spectroscopy type, high-voltage breakdown type, electron capture type, and negative ion capture type, which can be set according to actual conditions.

[0026] In an optional implementation of this embodiment, after the sensor module obtains the temperature data, wind speed data, wind pressure data and sulfur hexafluoride concentration value respectively, the above data are transmitted to the control module through the communication module for processing.

[0027] In an optional implementation of this embodiment, the control module includes a central processing unit, a clock circuit, an interface module, and a memory. The central processing unit is connected to the clock circuit, the interface module, and the memory respectively, and the interface module is connected to the communication module.

[0028] Specifically, the central processing unit module is used to process the sensor data transmitted by the sensor module, including temperature, wind speed, wind pressure, and sulfur hexafluoride value, generate a fan power control signal, and transmit it to the fan power module through the communication module. The clock circuit is used to provide a stable time reference signal, the interface module is used to receive data transmitted through the communication module, and the memory is used to store data.

[0029] In an optional implementation of this embodiment, the fan power module includes a PWM control module, and the PWM control module is connected to the communication module.

[0030] In an optional implementation of this embodiment, the fan power module further includes a speed regulation module and a fan current detection module, and the speed regulation module and the fan current detection module are connected to the PWM control module.

[0031] Specifically, after receiving the fan power control signal transmitted by the control module, the PWM control module converts the signal into a PWM duty cycle, and controls the speed regulation module to control the fan rotation.

[0032] Furthermore, the fan current detection module is used to detect the working current signal of the fan when it is working in real time, and feed back the working current signal to the PWM control module, and then transmit it to the control module.

[0033] In an optional implementation of this embodiment, the PWM control module has a first PID operation module and a second PID operation module built therein.

[0034] Specifically, the first PID operation module uses the PID1 algorithm to adjust the fan power control signal transmitted from the control module, converts it into a PWM duty cycle, and controls the speed regulation module to control the fan speed.

[0035] Furthermore, after running for a period of time, the second PID operation module uses the PID2 algorithm to adjust the fan power control signal again according to the temperature data, wind speed data, wind pressure data, sulfur hexafluoride concentration value collected by the sensor module and transmitted from the control module, as well as the working current value fed back by the fan current detection module, and converts it into a PWM duty cycle to control the speed regulation module, thereby completing the final fan speed control.

[0036] A dual PID operation module is set here, which can perform segmented control and adjustment on the entire working range of the fan according to real-time data, including the similarities and differences of the PID parameters in each working range of the fan, thereby improving the ventilation and heat dissipation efficiency of the fan.

[0037] In an optional implementation of this embodiment, the control module further includes an early warning module, and the early warning module is connected to the central processing unit.

[0038] Specifically, the early warning module receives the real-time working current of the fan fed back by the fan current detection module, and combines the relationship between the temperature data, wind speed data, wind pressure data and the working current fed back by the sensor module to determine whether abnormal fan operation, air inlet abnormality, air outlet abnormality and other abnormal phenomena occur, and generates a regular maintenance and inspection report for the fan. At the same time, based on the sulfur hexafluoride value, it determines whether the ventilation effect of the fan is strong.

[0039] In an optional implementation of this embodiment, the communication module is compatible with RS232, RS485, Ethernet, RS422, USB, and CAN communication interfaces.

[0040] In an optional implementation of this embodiment, the system further includes a manual operation module, and the manual operation module is connected to the control module.

[0041] Specifically, under normal circumstances, the entire substation intelligent ventilation control system operates automatically by default, but when manual maintenance or certain emergency situations are required, the control module can be connected through the manual operation module to manually switch the fan on and off.

[0042] In an optional implementation of this embodiment, the system further includes a display module, and the display module is connected to the control module.

[0043] Specifically, the display module adopts a digital tube display, which can display the temperature data, wind speed data, wind pressure data, and sulfur hexafluoride concentration value collected by the sensor module, and can also display the fan operating current detected by the fan current detection module. In addition, it can also display abnormal phenomena such as fan operating abnormality, air inlet abnormality, air outlet abnormality, and sulfur hexafluoride concentration value abnormality generated by the early warning module.

[0044] In an optional implementation of this embodiment, a soundproof box and a soundproof cover are provided on the fan. The soundproof box and the soundproof cover are made of noise reduction materials such as polyester fiber cotton or composite soundproof cotton to effectively isolate the noise generated when the fan is running.

[0045] In summary, the embodiment of the utility model proposes an intelligent ventilation control system for a substation, which is equipped with multiple sensors to collect multiple sensor data, and performs multi-source fusion processing on the multi-sensor data based on the control module to generate a control signal to control the fan power module, and a dual PID operation module is built in the PWM control module of the fan power module, which can consider the similarities and differences of the multi-segment PID parameters of the fan in the working range, and the dual PID operation module can adaptively select a more appropriate adjustment method to achieve automatic operation adjustment, improve the efficiency of ventilation and heat dissipation, and has extremely high feasibility and practicality; a communication module is set to complete the communication connection between the control module and the sensor module and the fan power module, and a display module is set to display the intelligent ventilation control information, so as to realize the intelligent control of the ventilation effect of the fan of the substation, optimize the ventilation environment of the substation, improve the efficiency of the intelligent ventilation and heat dissipation of the substation, improve the safety and reliability of the operation of the power equipment of the substation, and promote the standardization, informatization, digitization and intelligence of the construction of intelligent substations, which has a very broad application prospect and conforms to the future development trend of intelligent substations.

[0046] The above is a detailed introduction to an intelligent ventilation control system for a substation provided by an embodiment of the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A substation intelligent ventilation control system, characterized in that: The system includes a control module, a sensor module, a fan power module, and a communication module; The control module is connected to the communication module, the communication module is respectively connected to the sensor module and the fan power module, and the fan power module is connected to the fan; The sensor module includes a temperature sensor module, a wind speed sensor module, a wind pressure sensor module, and a gas sensor module, and the temperature sensor module, the wind speed sensor module, the wind pressure sensor module, and the gas sensor module are connected to the control module based on the communication module; The fan power module includes a PWM control module, the PWM control module is connected to the communication module, and the PWM control module has a first PID operation module and a second PID operation module built therein; The fan power module also includes a speed regulation module and a fan current detection module, and the speed regulation module and the fan current detection module are connected to the PWM control module.

2. The intelligent ventilation control system for a substation according to claim 1, characterized in that: The control module includes a central processing unit, a clock circuit, an interface module, and a memory. The central processing unit is connected to the clock circuit, the interface module, and the memory respectively, and the interface module is connected to the communication module.

3. The intelligent ventilation control system for a substation according to claim 2, characterized in that: The control module also includes an early warning module, and the early warning module is connected to the central processing unit.

4. The intelligent ventilation control system for a substation according to claim 1, characterized in that: The gas sensor module is a sulfur hexafluoride sensor module.

5. The intelligent ventilation control system for a substation according to claim 1, characterized in that: The communication module is compatible with RS232, RS485, Ethernet, RS422, USB, and CAN communication interfaces.

6. The intelligent ventilation control system for a substation according to claim 1, characterized in that: The system further comprises a manual operation module, and the manual operation module is connected to the control module.

7. The intelligent ventilation control system for a substation according to claim 1, characterized in that: The system further comprises a display module, and the display module is connected to the control module.

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