Internet-of-things monitoring system of wind generating set

Abstract

The utility model discloses an internet-of-things monitoring system for a wind generating set in the technical field of wind power generation detection equipment. The internet-of-things monitoring system comprises a cabin terminal, a tower drum terminal and a double-terminal communication module, the cabin terminal comprises a first shell with a built-in first control mainboard, and a meteorological data interface group is arranged on the surface of the first shell and comprises at least one RS-485 communication interface and two groups of analog input interfaces arranged side by side; the tower drum terminal comprises a second shell with a built-in second control mainboard, the surface of the second shell is provided with an electric power monitoring interface group, and the electric power monitoring interface group comprises a Modbus communication interface and an optical fiber transceiving interface; the double-terminal communication module is connected with the cabin terminal and the tower drum terminal through a magnetic isolation CAN bus communication link. According to the utility model, through a double-terminal distributed architecture, multi-protocol interface integration and magnetic isolation communication design, the reliability, expansibility and maintainability of the wind turbine generator monitoring system are significantly improved, and the situation of data congestion caused by complex working conditions is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of wind turbine unit internet of things monitoring systems, belong to wind power detection equipment technical field. BACKGROUND

[0002] Wind power generation refers to the dynamic energy of wind into mechanical energy, and then mechanical energy is converted into electric power energy, is wind wheel under the action of wind force rotates, wind's kinetic energy is converted into the mechanical energy of wind wheel shaft, generator is driven by wind wheel shaft rotation power generation, is the important form of wind energy utilization.Wind power generation has clean, environmental benefits friendly, renewable, installed capacity scale flexible, operation and maintenance cost low etc., is the most mature technology, the most with large-scale development and commercial development conditions of power generation mode except water energy.

[0003] In prior art, wind turbine unit often uses centralized data acquisition terminal, leading to meteorological parameters and electric power parameters need to share the same processor resources, under complex working conditions, easy to cause data congestion, difficult to meet real-time requirements. SUMMARY

[0004] The utility model aims at overcoming the deficiency in prior art, provide a kind of wind turbine unit internet of things monitoring systems, by double-terminal distributed architecture, multi-protocol interface integration and magnetic isolation communication design, the reliability, expandability and maintainability of wind turbine generator monitoring system are significantly improved.

[0005] To achieve the above object, the utility model is using the following technical scheme:

[0006] Firstly, the utility model provides a kind of wind turbine unit internet of things monitoring systems, including: cabin terminal, tower drum terminal and double-terminal communication module;The cabin terminal includes the first shell of built-in first control mainboard, the first shell surface is equipped with meteorological data interface group, including at least one RS-485 communication interface and two groups of analog quantity input interface arranged side by side;The tower drum terminal includes the second shell of built-in second control mainboard, the second shell surface is equipped with electric power monitoring interface group, including Modbus communication interface and optical fiber transceiver interface;Double-terminal communication module connects cabin terminal and tower drum terminal by magnetic isolation CAN bus communication link.

[0007] Further, the meteorological data interface group also contains two groups of SSI encoder interfaces connected with first control mainboard by isolation conversion chip, and the interval of two groups of SSI encoder interfaces is 15mm and marked with master / standby identification.

[0008] Further, the first control mainboard adopts a layered architecture design, comprising a protocol conversion layer configured with an RS-485 level conversion circuit, a data processing layer carrying an ARM architecture microcontroller, and a power isolation layer integrated with a wide voltage input isolation voltage stabilizing module.

[0009] Further, the output end of the power isolation layer is provided with an isolation voltage stabilizer in parallel, and the input voltage range is 18-36VDC.

[0010] Further, the second shell bottom is provided with a detachable guide rail mounting structure, and the side wall is provided with a waterproof aviation plug connected to an external sensor.

[0011] Further, real-time data synchronization is realized between the meteorological data interface group and the power monitoring interface group through a CAN bus protocol, and the synchronization period is 500ms.

[0012] Further, the optical fiber transceiver interface adopts an SFP packaged optical module, supports single-mode optical fiber transmission, and the maximum transmission distance is 10km.

[0013] Compared with the prior art, the utility model has reached the beneficial effects:

[0014] The utility model discloses a wind turbine unit internet of things monitoring system, and the cabin terminal and the tower drum terminal are independently arranged, are respectively used for meteorological data and power parameter acquisition, realize data processing load shunting, avoid resource competition, system response efficiency improves, and clock synchronization data interaction is carried out through the magnetic isolation CAN bus between the double terminals, ensures the time sequence consistency of meteorological parameter and power state. The cabin terminal integrates RS-485 communication interface, analog input interface and SSI encoder interface, the tower drum terminal is provided with Modbus and optical fiber interface, supports wind farm sensor plug and play, does not need external conversion module, and the protocol conversion layer and data processing layer are decoupled design, allow through the replacement interface daughterboard flexible extension new protocol type. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings constituting a part of the utility model provide further understanding of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation to the utility model. In the drawings:

[0016] Figure 1 It is a structure schematic view of the wind turbine unit internet of things monitoring system provided for the utility model embodiment one;

[0017] In the diagram: 100, Cabin Terminal; 101, First Housing; 102, First Control Main Board; 102a, Protocol Conversion Layer; 102b, Data Processing Layer; 102c, Power Isolation Layer; 110, Meteorological Data Interface Group; 111, RS-485 Communication Interface; 112, Analog Input Interface; 113, SSI Encoder Interface; 200, Tower Terminal; 201, Second Housing; 202, Second Control Main Board; 210, Power Monitoring Interface Group; 211, Modbus Communication Interface; 212, Fiber Optic Transceiver Interface; 300, Dual-Terminal Communication Module. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0019] The following detailed description is exemplary and intended to provide further detailed explanation of the present invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this invention.

[0020] Example:

[0021] like Figure 1 As shown, this embodiment provides a wind turbine generator IoT monitoring system, including a nacelle terminal 100 and a tower terminal 200 respectively located in the nacelle and tower, and a dual-terminal communication module 300. The nacelle terminal 100 is deployed on the side wall of the generator nacelle, and the tower terminal 200 is installed in the tower base control cabinet. The two are connected to the dual-terminal communication module 300 via shielded twisted-pair cables to form a CAN bus communication network. Wherein:

[0022] The cabin terminal 100 includes a first housing 101 and a first control motherboard 102, wherein:

[0023] The first housing 101 is made of aluminum alloy, with dimensions of 200mm × 150mm × 80mm and a surface protection rating of IP54. The surface of the first housing 101 is equipped with a meteorological data interface group 110, specifically including:

[0024] 1. RS-485 communication interface 111: Connects to the weather station via SP3485EN chip, supports Modbus RTU protocol, baud rate 9600bps;

[0025] 2. Analog Input Interface 112: Two sets of parallel input channels, with signal consistency monitored in real time via an LM2903 voltage comparator;

[0026] 3. SSI encoder interface 113: a double SSI interface accesses the generator encoder through an ADM2587E isolation chip, and the interface spacing is 15 mm.

[0027] The first control mainboard 102 adopts a layered architecture design, including:

[0028] 1. Protocol conversion layer 102a: MAX13487EESA+ chip set realizes RS-485 / RS-232 protocol conversion;

[0029] 2. Data processing layer 102b: STM32H743VIT6 microcontroller runs temperature compensation algorithm, pre-processes meteorological data, and the communication interface circuit between the data processing layer 102b and the external communication interface is integrated with a DP83867IR chip;

[0030] 3. Power isolation layer 102c: ADuM5410 chip provides 24V input isolation, and parallel LTM8067 voltage stabilizing module, input range 18-36VDC, supports dual power supply automatic switching.

[0031] The tower drum terminal 200 includes a second housing 201 and a second control mainboard 202, wherein:

[0032] The bottom of the second housing 201 is provided with a DIN rail buckle, compatible with a 35mm standard rail; the side wall is configured with an M12 aviation plug, with a protection level of IP67, and the surface of the second housing 201 is configured with a power monitoring interface group 210, specifically including:

[0033] 1. Modbus communication interface 211: access the voltage transformer through an AD8479 differential amplifier, and the signal is configured into a second-order filter with a cutoff frequency of 500Hz through an AD8605 operational amplifier;

[0034] 2. Optical fiber transceiver interface 212: using HFBR-2412TZ optical module, supporting SFP packaged single-mode optical fiber, maximum transmission distance 10km.

[0035] The second control mainboard 202 integrates an ADM3053 isolated CAN transceiver, and the built-in ferroelectric memory FM25V20-G caches the latest 5 seconds of data.

[0036] The double-terminal communication module 300 contains a data cache unit, which realizes power-off data protection using a non-volatile memory, saving the latest 5 seconds of communication data.

[0037] In actual use, the cabin terminal 100 collects the temperature and humidity of the weather station, the 4-20mA signal of the anemograph and the rotating speed of the encoder every 500 ms, the tower terminal 200 monitors the output voltage of the converter in real time, and uploads the voltage through the Modbus interface; the two terminals establish a CAN2.0B communication link through the ADM3251E magnetic isolation chip, the frame format contains a 32-bit CRC check code, when the error rate is greater than 1x10 -5 , the system automatically switches to the standby channel and triggers data retransmission.

[0038] The state indication is realized by a three-color LED module, and specifically includes:

[0039] The power state indication lamp is connected to the FAULT pin of the LTM8067, and the red light is on when an abnormality occurs.

[0040] The communication quality indication lamp is bound to the LINK / ACT state register of the DP83867IR chip.

[0041] As can be known by the technical knowledge, the utility model can be realized by other embodiments without departing from the spirit or essential characteristics. Therefore, the above disclosed embodiments are only examples and are not the only ones. All changes within the scope of the utility model or within the scope equivalent to the utility model are included in the utility model.

[0042] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model and not to limit it, although the utility model has been described in detail with reference to the above examples, those skilled in the art should understand that: the specific embodiments of the utility model can still be modified or replaced, and any modification or equivalent replacement without departing from the spirit and scope of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A wind turbine unit IOT monitoring system, characterized in that, The application relates to a cabin terminal (100), a tower terminal (200) and a double-terminal communication module (300); the cabin terminal (100) comprises a first shell (101) with a built-in first control mainboard (102), and a weather data interface group (110) is arranged on the surface of the first shell (101) and comprises at least one RS-485 communication interface (111) and two groups of analog quantity input interfaces (112) arranged side by side; the tower terminal (200) comprises a second shell (201) with a built-in second control mainboard (202), and a power monitoring interface group (210) is arranged on the surface of the second shell (201) and comprises a Modbus communication interface (211) and a fiber transceiver interface (212); the double-terminal communication module (300) connects the cabin terminal (100) and the tower terminal (200) through a magnetic isolation CAN bus communication link. The weather data interface group (110) further comprises two groups of SSI encoder interfaces (113) connected with the first control mainboard (102) through isolation conversion chips, the interval between the two groups of SSI encoder interfaces (113) is 15 mm, and main / standby marks are marked.

2. The wind turbine group IoT monitoring system according to claim 1, characterized in that, The first control mainboard (102) adopts a layered architecture design and comprises a protocol conversion layer (102a) provided with an RS-485 level conversion circuit, a data processing layer (102b) carrying an ARM architecture microcontroller and a power isolation layer (102c) integrated with a wide voltage input isolation voltage stabilizing module.

3. The wind turbine group IoT monitoring system according to claim 1, characterized in that, Isolation voltage stabilizers are arranged in parallel at the output end of the power isolation layer (102c), and the input voltage range is 18-36 VDC.

4. The wind turbine group IoT monitoring system according to claim 3, characterized in that, The second shell (201) is provided with a detachable guide rail mounting structure at the bottom, and a waterproof aviation plug is arranged on the side wall to connect external sensors.

5. The wind turbine group IoT monitoring system according to claim 1, characterized in that, Real-time data synchronization is realized between the weather data interface group (110) and the power monitoring interface group (210) through a CAN bus protocol, and the synchronization period is 500 ms.

6. The wind turbine group IoT monitoring system according to claim 1, characterized in that, The fiber transceiver interface (212) adopts an SFP packaged optical module and supports single-mode fiber transmission, and the maximum transmission distance is 10 km.

7. The wind turbine group IoT monitoring system according to claim 1, characterized in that, ​

Images