DTU-based remote fault detection device for water turbine speed regulation system

Abstract

The utility model discloses a DTU-based remote fault detection device for a water turbine speed regulation system, which comprises a remote fault detection host module, a display module, a DTU wireless communication module and an external power supply module, the DTU wireless communication module is in wireless connection with the remote fault detection host module, the DTU wireless communication module is electrically connected with the external power supply module, and the DTU wireless communication module is electrically connected with the water turbine speed regulation system. The DTU wireless communication module is connected with the water turbine speed regulation system, data can be directly transmitted to the remote fault detection host module in real time through a 4G network after signal collection is completed, technical personnel can participate in fault processing in real time, the efficiency and accuracy of fault processing are improved, and meanwhile the extendibility is rich.

Description

Technical Field

[0001] The utility model relates to the technical field of remote monitoring equipment, in particular to a remote fault detection device for a water turbine speed regulation system based on a DTU. Background Art

[0002] The turbine speed control system is a highly complex and nonlinear integrated system, covering multiple subsystems such as electrical, mechanical and hydraulic transmission. At present, the fault diagnosis and control of the turbine speed control system mainly rely on the measurement and feedback of sensors, and the relevant sensors are closely connected with the diagnosis and control system of the speed governor.

[0003] There are two main methods for diagnosing faults in existing turbine governors: The first method uses the governor's built-in fault display interface, which can display preset fault information, but requires the user to go to the site to check the control cabinet in person to check the fault information and infer the cause of the fault based on the fault information. The second method is to use a governor fault centralized processing unit, which can collect governor information from several specific units and centrally display the fault information of the speed control system in the plant in the central control system. The user can then infer the fault based on work experience and fault information.

[0004] However, the application scope of existing fault diagnosis technology is limited to the factory area and mainly relies on the operation and maintenance personnel of the factory area. This limits the timeliness and accuracy of fault diagnosis. Professional technical service personnel in the background cannot directly participate in fault handling. When the speed governor fails, users cannot quickly make effective judgments, which increases the risk of fault judgment errors. The handling plan may therefore deviate and the fault problem cannot be solved in a timely and effective manner. Utility Model Content

[0005] Purpose of the invention: The purpose of the utility model is to provide a remote and efficient DTU-based remote fault detection device for a turbine speed control system.

[0006] Technical solution: A DTU-based remote fault detection device for a turbine speed control system, comprising: a remote fault detection host module, a display module, a DTU wireless communication module, and an external power supply module. The remote fault detection host module is electrically connected to the display module, the DTU wireless communication module is wirelessly connected to the remote fault detection host module, the DTU wireless communication module is electrically connected to the external power supply module, and the DTU wireless communication module is electrically connected to the turbine speed control system.

[0007] Specifically, the turbine speed control system includes a turbine speed governor electrical cabinet controller, a turbine speed governor mechanical cabinet controller and a turbine speed governor oil pressure device control cabinet.

[0008] Specifically, the DTU wireless communication module receives the controller signals of the hydroturbine governor electrical cabinet controller, the hydroturbine governor mechanical cabinet controller, and the hydroturbine governor oil pressure device control cabinet through the serial port.

[0009] Preferably, the remote fault detection device for the hydroturbine governing system further includes a backup battery module, and the DTU wireless communication module is electrically connected to the backup battery module.

[0010] Specifically, the DTU wireless communication module includes an ARM control chip, a 4G communication module, a power supply module, and a battery module that are electrically connected to each other.

[0011] Specifically, the remote fault detection host module is connected to a mobile phone or a computer through the Internet.

[0012] Specifically, the DTU wireless communication module is wirelessly connected to the remote fault detection host module through the 4G network.

[0013] Beneficial effects: Compared with the prior art, the improvement of the present utility model lies in that: by connecting the DTU wireless communication module to the hydroturbine governing system, after signal acquisition, the data is directly transmitted to the remote fault detection host module in real time through the 4G network, enabling professional technical service personnel to intervene in the fault handling in real time, improving the efficiency and accuracy of fault handling, and at the same time providing a real-time connection method with the mobile terminal or the host terminal with stronger processing capabilities, providing an interface for professional technicians to monitor and integrate more efficient data analysis algorithms, and having rich scalability. Description of the Drawings

[0014] Figure 1 is the overall structure diagram of the present utility model. Detailed Embodiments

[0015] The following further illustrates the specific solutions of the present utility model in conjunction with the drawings and specific embodiments.

[0016] Please refer to Figure 1 As shown, the present utility model provides a remote fault detection device for a hydroturbine governing system based on DTU, including: a remote fault detection host module, a display module, a 4G-DTU wireless communication module, and an external power supply module. The remote fault detection host module is electrically connected to the display module. The 4G-DTU wireless communication module is connected to the remote fault detection host module through the 4G network. The DTU wireless communication module is electrically connected to the external power supply module. The DTU wireless communication module is electrically connected to the hydroturbine governing system through the serial port. The hydroturbine governing system includes a hydroturbine governor electrical cabinet controller, a hydroturbine governor mechanical cabinet controller, and a hydroturbine governor oil pressure device control cabinet.

[0017] The 4G-DTU wireless communication module receives the controller signals of the hydroturbine governor electrical cabinet controller, the hydroturbine governor mechanical cabinet controller, and the hydroturbine governor oil pressure device control cabinet through the serial port. It can convert serial port data into IP data or convert IP data into serial port data to achieve data interaction. In this embodiment, the 4G-DTU wireless communication module includes an ARM control chip, a 4G-Cat1 communication module, a power supply module, and a battery module that are electrically connected to each other. The ARM control chip selects the ARM9 chip, which can provide serial communication interfaces, including common general serial communication methods such as RS232 and RE485, and is consistent with the controller interface of the hydroturbine speed regulation system. Specifically, this chip module is equipped with 5 serial ports, 8 timers, 112 general-purpose IO ports, 2 DMA controllers (12 channels), 3 SPI interfaces, 3 12-bit ADCs, and 1 12-bit DAC. Its rich port interrupts and resource configurations enable complex logic operations and control tasks to be easily achieved through software programming, meeting diverse application requirements.

[0018] The controller signals of the hydroturbine governor electrical cabinet, mechanical cabinet, and oil pressure device control cabinet include: data such as guide vane setting, guide vane feedback, frequency setting, frequency feedback, and governor system fault information in the electrical cabinet; data such as guide vane feedback, lock-in and lock-out signals, emergency shutdown signals, and governor system fault information in the mechanical cabinet; data such as oil pressure signals, liquid level signals, start-stop pump signals, and oil pressure device system fault information in the oil pressure device. Among them, the guide vane setting, guide vane feedback, frequency setting, frequency feedback, pressure signal, and liquid level signal are all continuous digital signals; the governor system fault information, lock-in and lock-out signals, emergency shutdown signals, start-stop pump signals, oil pressure device system fault information, etc. are pulse quantity signals. The above signals are sent to the 4G cloud terminal server through the 4G-DTU wireless communication module for data temporary storage. The remote fault inspection host module reads the data of the 4G cloud terminal server through the wireless communication protocol and displays and further processes data prediction on the display module or the mobile phone APP module.

[0019] In this embodiment, the hydroturbine speed regulation system remote fault detection device is also provided with a backup battery module. The DTU wireless communication module is electrically connected to the backup battery module through the battery module and can provide power when the external power supply module fails.

[0020] In this embodiment, the remote fault inspection host module is responsible for receiving the signal of the turbine governor system from the 4G-DTU wireless communication module, realizing the remote data acquisition of the electrical cabinet, mechanical cabinet, and oil pressure device control cabinet. At the same time, it further processes the collected data, visually displays the data trend on the display module, predicts the data trend, and provides real-time fault diagnosis function for the turbine governor system. The display module can be an ordinary display screen or a touch display screen, and the touch display screen can directly provide a touch operation interface.

[0021] In this embodiment, the remote fault inspection host module can also be connected to the supporting mobile app display module, cloud server, or more powerful remote host terminal through the Internet. Taking the mobile app display module as an example, in addition to receiving the speed regulation system signal of the wireless communication module in real time on the mobile phone, realizing the remote data acquisition of the electrical cabinet, mechanical cabinet, and oil pressure device control cabinet of the turbine governor, it can also be redundantly configured with the remote fault inspection host module, further process the collected data, display the data trend, predict the data trend, and provide real-time fault diagnosis function for the speed regulation system.

Claims

1. A remote fault detection device for a turbine speed control system based on DTU, characterized in that: include: A remote fault detection host module, a display module, a DTU wireless communication module, and an external power supply module. The remote fault detection host module is electrically connected to the display module, the DTU wireless communication module is wirelessly connected to the remote fault detection host module, the DTU wireless communication module is electrically connected to the external power supply module, and the DTU wireless communication module is electrically connected to the turbine speed control system.

2. The remote fault detection device for a turbine speed regulating system according to claim 1, characterized in that: The water turbine speed regulating system comprises a water turbine speed governor electrical cabinet controller, a water turbine speed governor mechanical cabinet controller and a water turbine speed governor oil pressure device control cabinet.

3. The remote fault detection device for a turbine speed regulating system according to claim 1, characterized in that: The remote fault detection device for the turbine speed control system also includes a backup battery module, and the DTU wireless communication module is electrically connected to the backup battery module.

4. The remote fault detection device for a water turbine speed regulating system according to claim 1, characterized in that: The DTU wireless communication module includes an ARM control chip, a 4G communication module, a power module and a battery module which are electrically connected to each other.

5. The remote fault detection device for a water turbine speed regulating system according to claim 1, characterized in that: The remote fault detection host module is connected to a mobile phone or a computer via the Internet.

6. The remote fault detection device for a water turbine speed regulating system according to claim 1, characterized in that: The DTU wireless communication module is wirelessly connected to the remote fault detection host module via a 4G network.

7. The remote fault detection device for a water turbine speed regulating system according to claim 2, characterized in that: The DTU wireless communication module receives controller signals of the turbine speed governor electrical cabinet controller, the turbine speed governor mechanical cabinet controller and the turbine speed governor oil pressure device control cabinet through the serial port.

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