Design And Development Of SCADA System For Wind Farm Cluster Control Center

Wind power has been widely used by many countries in the world.Until now,the total installed capacity of wind power in China has reached the top in the world.With the development of the wind power industry,wind power groups usually build several or dozens of wind farms in the same area.Due to the different wind farms in different geographical locations,there are differences in wind turbines and operating equipments,which results in the inability of monitoring and equipment information interaction and centralized monitoring.Moreover,according to the grid requirements,the power system of booster stations needs to be guarded all-weather,which leads to serious problems such as the dispersed operation and maintenance personnel,low work efficiency and waste of resources.Based on the above problems,this paper proposes to build a remote centralized monitoring SCADA system for wind farms to achieve centralized monitoring and management of wind farms.The unified monitoring and dispatching of wind turbines and electric power equipment in the same area has achieved a summary of the data information in a large number of wind farms,which provides an effective guarantee for the comparison of the later operation data and the intelligent analysis.Firstly,the paper designs the overall structure and network architecture of the centralized control SCADA system,and analyzes the overall composition and actual functions of the system in detail.The overall system is divided into two major parts of the central control center and the wind farm side.The system is primarily developed through pre-acquisition servers,SCADA servers,and relational database servers.Secondly,the data acquisition module of the centralized control SCADA system was designed and implemented,mainly using IEC-104 protocol to communicate.The wind farm side focused on collecting data information such as booster stations,wind turbines,wind power prediction,electric energy measurement information,and fault recorders.On the central side of the centralized control center,the data is acquired by the pre-collection server,and the IEC-104 protocol analysis transmission method and the pre-communication system are designed.Thirdly,The overall framework of real-time database for centralized control SCADA system is developed and designed.Combined with relational database,Using data storage technology based on shared memory,a real-time data model download process,data storage processing method,and real-time data synchronization transmission mechanism are designed.At the same time,the real-time monitoring module of the centralized control SCADA is designed to realize the storage management and display of the system real-time data.Finally,a relational database topology structure diagram is designed for the structure and data relationship of the centralized control SCADA system.This paper mainly designs and develops the two kinds of table structures in the relational database,such as the parameter table and the historical data table,some of the parameter table structures contain basic configuration information for real-time database running.At the same time,the configuration management and historical data analysis modules are designed,the production and operation information data is analyzed and processed,wind farm operation and maintenance structure is continuously optimized.Through the actual engineering test,the system can run smoothly and reliably.In order to achieve a reliable power generation in a large range of wind farms,it provides a reliable technical support for "centralized control and regional governance",and has a wide range of applications.