高压直流输电控制保护系统测控装置联锁图形化二次编程功能研究

Research on interlock schematic second programmable function in measurement & control device of control and protection system for HVDC

为了实现高压直流输电控制保护系统安全可靠的联锁功能,通过对现场层装置应用场景深入研究,提出一种新的测控装置软件架构及设计方法,将测控装置的基本测控功能与需二次编程的逻辑联锁功能相分离,利用系统周期调用的方式实现逻辑联锁程序与测控基本程序的融合。该方法基于成本低廉的软硬件平台,测控装置基于英飞凌C167微处理器,采用标准的IEC61131图形化设计语言,程序设计简单且可靠性高,不依赖特定硬件,适合在不同的硬件平台上实现。基于该方法在观音岩直流输电工程的实验数据表明该软件控制策略具有维护成本低廉,可靠性高,移植方便的特点,对于实现控制保护系统安全可靠的联锁功能具有重要的应用价值。

In order to achieve the HVDC control and protection system safe and reliable interlocking function, based on the field level device application scenarios in-depth study, this paper proposes a new measurement control device software architecture and design method. The basic measurement control functions and logic interlock function to be the second programmed are separated from one another, system periodic calls are used to achieve the integration of logic interlock program and measurement control basic programs. The method is based on low-cost hardware and software platform, its measurement control device used is based on Infineon C167 microprocessor, the standard IEC61131 graphical design language is adopted, and the program design is simple and highly reliable, not dependent on specific hardware, and suitable for implementing on different hardware platforms. The experimental data of Guanyinyan HVDC Project shows that the software control strategy has a low maintenance cost, high reliability and easy migration characteristics, and it has an important application value for control and protection system to achieve safe and reliable interlock function.