热电厂能源与动力管理信息系统开发与应用

Energy and Power Management Information System Design on Thermal Power Plant

摘要:

针对于某橡胶集团热电厂控制室分散，采集点位多，人力成本高，管理难度大等问题，详细介绍了基于西门子S7-1500 PLC与Wincc的管理信息系统的方案设计，硬件设计及上位机组态软件设计；其中PLC建立分布式I/O负责热电厂中七个子系统中设备的 数据采集，数据传输；系统中现场设备分为四类，包括三菱F700变频器、MODBUS设备、模拟量传感器、数字量传感器，现场设备与PLC建立通讯，采集数据；Wincc通过建立多客户机模式实现对系统的视频监控、画面监控、数据储存、数据报警和数据查询；整体通讯方案架构采用PROFIBUS-DP现场总线通讯协议，由ET200SP建立起PROFIBUS-DP从站，S7-1500PLC作为主站，为保证主站与从站之间的稳定通讯，采用光纤进行信号传输；多块PLC之间采用西门子特有的通讯方式：一块PLC作为IO Controller，其余PLC作为IO Device，可实现数据的交互。该系统运行稳定可靠，可减少企业人力成本，实现系统的信息化管理，具有广泛的应用价值和发展前景。

Abstract:

: For the control room dispersion, many Data Acquisitions, high labor costs, and difficult management in a thermal power plant of a rubber group, Introduce the design of the management information system , the hardware design and the configuration software design of the host computer based on Siemens S7-1500 PLC and Wincc. PLC establishes distributed I/O to be responsible for data acquisition and data transmission of equipment in seven subsystems of thermal power plant. The field devices in the system are divided into four categories, including Mitsubishi F700 inverter, MODBUS device, analog sensor,digital sensor. Wincc realizes video monitoring, picture monitoring, data storage, data alarm and data query of the system by establishing multi-client mode. The overall communication scheme architecture adopts the PROFIBUS-DP fieldbus communication protocol. The PROFIBUS-DP slave station is established by the ET200SP, and the S7-1500PLC is used as the master station. To ensure stable communication between the master station and the slave station, the optical fiber is used for signal transmission. Siemens-specific communication methods are used between multiple PLCs: one PLC is used as the IO Controller, and the other PLCs are used as IO devices to realize data interaction. The system is stable and reliable. It can reduce the labor cost of enterprises and realize the information management of the system, which has wide application value and development prospects.