基于PROFIBUS DP总线的换流站测控装置研制  

Development of measurement & control device based on PROFIBUS DP for convertor stations

作　　者：傅亚光 杨亚璞 曾丽丽 胡欢 李延龙 王晓辉 

机构地区：[1]许继电气股份有限公司,河南许昌461000

出　　处：《电力系统保护与控制》2015年第19期118-124,共7页Power System Protection and Control

摘　　要：换流站测控装置(分布式I/O装置)作为与一次设备的接口,位于直流控制保护系统的现场控制层,在高压直流输电工程中起着重要的作用。介绍了一种基于PROFIBUS DP现场总线的换流站测控装置的研制。装置的硬件系统采用以紧密耦合的多处理器系统为核心的模块化结构,具备很高的速度和总体处理能力,并可根据控制间隔的需要合理配置I/O资源。软件系统提供直观的软硬件配置工具和人机接口功能,通过多优先级循环任务和中断任务的执行,确保了控制响应的实时性。高精度交直流采样、自动同期和就地连锁功能,双重化的现场总线通道和电源回路设计,以及完备的内部检测和输出闭锁等,使装置在保证安全可靠运行的前提下,实现了功能的全面升级。模拟试验和实际工程运行证明,所研制的基于PROFIBUS DP现场总线的换流站测控装置,可以满足各种直流输电应用的要求。Measurement ＆ control devices （distributed I/O units） are located at the field control level of the HVDC control ＆ protection system in the converter stations. As the interface to the primary system the I/O units take important part in the HVDC transmission. The development of a PROFIBUS DP based I/O unit is introduced. The hardware of the unit is composed up around closely coupled multi-processors and adopts modular structure which ensure very high processing speed and overall capacity and also the I/O resources can be flexibly configurable according to the actual needs. The software system of the device provides visualized MMI functions for hardware/software configuration and maintenance. With multi-level cyclic task structure of the software the time critical tasks and emergency events can always be handled. Features for accurate AC/DC sampling, automatic synchronous measuring and local interlock functions, duplicated PROFIBUS channels and power supplies, as well as comprehensive self-diagnosis and fault blocking functions, the performance of the device has been fully upgraded under the premise of ensuring the safe and reliable operation. Results derived from simulation tests and operation of real projects have proved that the PROFIBUS DP based I/O unit developed is fully meet the requirement of various HVDC applications.

关 键 词：高压直流输电 测控装置 PROFIBUS DP 智能从站 冗余通信 交流采样 同期 

分 类 号：TM721.1[电气工程—电力系统及自动化]