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Wind site communication network using dual loop redundancy

A communication network and wind farm technology, applied in the field of wind farm communication network using double-ring redundancy, can solve the problems of loss of contact between wind turbine and wind farm monitoring system, idle equipment, etc., to achieve strong anti-electromagnetic interference ability, short cable length, The effect of high transfer rate

Inactive Publication Date: 2007-11-28
DONGFANG TURBINE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a single communication line is used, once a node or a section of line fails, a large number of wind turbines will lose contact with the wind farm monitoring system; if backup lines and equipment are used, although the reliability of communication can be improved to a certain extent, it will cause the device to idle
At present, there is no wind field communication network that can efficiently transmit data under normal conditions, and can automatically rebuild the ring network when applause occurs to ensure normal communication of wind turbines

Method used

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  • Wind site communication network using dual loop redundancy
  • Wind site communication network using dual loop redundancy
  • Wind site communication network using dual loop redundancy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] As shown in Figures 1 and 6-13, a double-ring redundant wind field communication network is adopted, including the controller communication and monitoring station of the wind turbines, and the wind field ring network is formed between the wind turbines. It is characterized in that: the wind field ring network adopts Optical fiber ring network with dual-ring self-healing strategy in topology, including fiber channel data encoding, communication protocol, MCU module, Ethernet hardware module, optical fiber interface module, CAN module, other communication interface modules, power supply module; monitoring station through Ethernet hardware The module directly remotely accesses the running status of each fan; the communication controller of each fan is connected to the optical fiber ring network of the wind farm through the optical fiber interface module, and communicates with other fans and the main communication controller; the CAN module provides Dual CAN communicates wit...

Embodiment 2

[0053] There are two operating mechanisms for double rings: one is single ring operation, and the other ring is in a backup state, forming a self-healing ring only when the network fails; the other is double ring operation at the same time, as shown in Figure 2. , B two rings are transmitted separately, during normal operation, the dual-ring switching controller selects one of the rings to transmit information, if the ring fails (such as the optical fiber network at point K in Figure 2 is cut off), the sub-station automatically sends the received The signal is switched to the sending end of another ring, and the A and B rings reconstitute the ring network to complete the data transmission.

Embodiment 3

[0055] When the double rings of the network are normal, the data of the positive and negative fiber channels are transmitted independently without affecting each other, as shown in Figure 3(a). When the right side cannot receive the working clock (the node on the right side is faulty or the fiber is faulty), the data received on the left side will be sent around from the left side to form a left side self-loop, as shown in Figure 3(b). Conversely, if the left node fails, the information received on the right will be sent out from the right to form a self-loop on the right, as shown in Figure 3(c), to ensure that the data bus sent by the slave node can be transmitted to the master node. When the network works in a single-ring running state. When the fault in the faulty section is eliminated, the node will automatically return to the double-ring running state shown in Figure 3(a). The fiber self-healing control of the node unit is automatically completed by the node circuit of ...

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Abstract

The invention discloses a wind-field communication network with double-loop redundancy, which includes a communication and monitoring station of the fan controller, wherein the wind-field looped network is comprised among the fans. The wind-field looped network applies the optical fiber looped network of the topological structure with the double-loop self-healing policy, which comprises the following parts: a fiber channel data code, a communication protocol, an MCU hardware module, an Ethernet hardware module, a fiber interface module, a CAN module, the other communication interface module and a power module, wherein the monitoring station remotely accesses the operation state of every fan directly by the Ethernet hardware module, the communication controller of every fan is connected with the fiber network of the wind field by the fiber interface module and communicates with the other fans and the master communication controller, CAN module communicates with the other controller of the fan provided double CAN by the interior of MCU hardware module, MCU hardware module sends the data and the order to the wind-field looped network by the fiber interface module according to the corresponding communication protocol or the other controller in the fan by CAN module after calculating and judging the received communication data and the data of the sensor. The topology network structure of the invention is provided with the short cable, which is fit for fiber and error transmission; the fiber network transmission media of the invention is provided with the high transmission efficient, the long distance, the strong electromagnetic anti-interference ability; the double-loop network structure of the invention achieves the self-healing function of the network; the DNP 3.0 regulation in the total wind-field communication dissolves the broadcast storm problem.

Description

technical field [0001] The invention relates to the structure and strategy field of communication among wind farms in a wind farm communication network related to wind power generation, in particular to a wind farm communication network using double-ring redundancy. Background technique [0002] The wind farm communication network is a physical way to remotely monitor the running status of wind turbines, and it is also the link to connect with the Distributed Control System (DCS system). Whether the communication network works normally directly affects the operation efficiency of the entire wind farm. [0003] Since the wind farm is usually located in a geographical location with a relatively harsh environment, the probability of failure of communication equipment and lines due to natural conditions is relatively high. If a single communication line is used, once a node or a section of line fails, a large number of wind turbines will lose contact with the wind farm monitorin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/437H04B10/12H04L12/28H04B10/25
Inventor 尚小林刘启飞陈建国曾斌
Owner DONGFANG TURBINE CO LTD
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