新一代智能变电站控制保护一体化智能终端研究与开发

Research and development on intelligent terminal units incorporated with control and protection functions in new generation smart substation

适应新一代智能变电站对二次设备功能一体化的要求,对集成保护控制功能的智能变电站一体化智能终端进行研究。结合间隔层和过程层二次设备的工程配置,对一体化智能终端的接口标准化、功能整合、信息共享、整装置的即插即用、软硬件集成以及可靠性设计等进行研究。依托新一代智能变电站层次化保护系统体系架构,提出一种实现间隔功能自治的一体化装置设计方案。采用多CPU信息融合与高速交互技术,在一套装置中集成了合并单元、智能终端、测控和保护装置的功能。基于紧凑型设计原则开发了适用于220 k V线路间隔的智能变电站控制保护一体化智能终端样机。通过测试验证,表明方案能减少二次设备数量,简化智能变电站系统架构。

Adapt to the functional integration requirements for secondary equipment in new generation smart substation, intelligent terminal units incorporated with control and protection fimctions are researched. Combined with project application of bay and process layer equipment, the standardization of interface, function integration, information sharing, the plug and play of whole device, software and hardware integration and reliability design of intelligent terminal are studied. Depending on architecture of hierarchical protection system in new generation smart substation, a design scheme of integrated device is given, which could realize fimctional autonomy in interval. The function of merging unit, intelligent terminal, measurement and control, as well as protection are integrated in one device using multiple CPU information fusion and high-speed interactive technology. Based on the compact design, the intelligent terminal unit incorporated with control and protection fimctions is developed, which is suitable for the 220 kV line interval. Through the test verification, it shows the proposal could effectively reduce the number of secondary equipment and simplify the system architecture of smart substation.