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Project Overview

The wind farm and remote monitoring automation system adopt a hierarchical distribution system structure. The entire automation system is divided into three layers: wind farm control layer, regional control layer and centralized control layer. The wind farm control layer is located at the site of the wind farm, providing complete automated monitoring for wind farm operation and management, and providing data and information services for superior systems; the regional control layer is located in the regional wind farm central control room and is responsible for the operation status of the wind farms under its jurisdiction Monitoring and management, providing data and information services for the centralized control layer; the centralized control layer acts as the headquarters or the group's wind power monitoring center, fully controlling the operation status of all wind farms, and coordinating resource allocation.

Wind turbines need to operate in harsh environments for many years, and require timely response to any abnormal conditions in the operation process. Therefore, real-time and reliable control must be ensured. In a wind farm, cluster monitoring of dozens or hundreds of wind turbines is usually required, and a stable, reliable, fast, and real-time network system is required. In order to ensure the normal operation of wind turbines, it is expected to implement preventive maintenance, thereby greatly reducing the losses caused by fan failures. In the future, more and more fan condition monitoring and analysis will appear, and data streams such as video and condition monitoring will be added.

The overall structure of the wind power system can be divided into three levels:

Local control layer:

Arranged in the fan control box/cabinet/room, to control and understand the operation and operation of the device on the spot, and transfer the relevant data to the central control room.

Factory monitoring layer:

A computer monitoring system is installed in the central control room of the wind farm. In the central control room of the wind farm, all components of the wind farm and power transmission and transformation equipment can be centrally controlled.

Remote monitoring layer:

The remote monitoring center can be arranged according to the needs. The remote monitoring center can communicate with the host of the central control room of each wind farm through the wide area communication network to monitor the wind farm equipment.

solution

In order to improve the reliability of the wind farm monitoring system, the entire wind farm monitoring system adopts a hierarchical distributed architecture, which is divided into an on-site control layer, a central centralized control layer and a remote monitoring layer, and each layer of the system uses functions Distributed architecture, that is, the system functions are distributed in different functional node computers of the system, and each functional node strictly executes the specified tasks and is interconnected through the network. For important functional nodes, the computer adopts redundant configuration.

The system network structure remote monitoring system uses fast Ethernet transmission technology. The high-speed local area network constructed with 100M/1000M Ethernet switches has a network transmission rate of not less than 100Mbps. It is adaptive, uses TCP/IP protocol, and complies with the IEEE802.3U standard. The network channel uses a dual-network redundancy structure and the transmission medium is Twisted pair and optical fiber. The system communicates with the external system through the router to realize the communication with the wind farm computer monitoring system, and reserves the communication interface with the superior management department.

There are many equipments involved in the operation of wind farms, there are multiple subsystems, and they operate independently, which increases the difficulty of operation and maintenance. The wind farm automation system adopts advanced control and communication technology to integrate the existing main control, box transformer, booster station, reactive power control, video security and other systems to provide users with a "single system" with complete functions and easy operation. , Reduce the difficulty of operation and maintenance, improve the level of automation and management:

1) Dual switches above and below the tower

2) A variety of data such as S3110-8GE2GF-I convergence control and video are transmitted to the tower below the tower

3) Use S3111-8GE3GF-I under the tower to receive the data on the tower and form a gigabit redundant ring network with other fans

Program features

The product has extremely high reliability, the product has passed the industrial four-level electromagnetic compatibility test, the operating temperature: -40 ~ 85 ℃, aluminum alloy shell fanless heat dissipation technology, IP40 protection level, can work reliably and stably in harsh environments . In order to ensure the reliability of communication, a redundant optical fiber ring network can be formed with a fast self-healing function (maximum recovery time 20ms/unit). When the communication network fails, it can automatically and smoothly switch to the redundant backup line. Utilize the advantages of Gigabit fiber network bandwidth and QoS functions to efficiently support the transmission of multiple forms of monitoring data such as video, condition monitoring, and voice