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针对目前智能变电站网络架构复杂、装置数量多、保护及测控等二次设备可靠性及速动性相对不高等问题,提出一种智能变电二次系统设计思路,并以220 k V智能变电站为例,设计线路间隔、主变间隔和母线间隔的保护控制系统功能架构、网络架构及配置。通过采用多功能集成装置等方法,该方案可大幅减少装置数量和光纤数量,提高保护装置的可靠性和速动性,简化系统网络架构,减少虚端子配置和调试工作量,降低运行维护难度。
Aiming at the problems of complex network structure, large number of devices, protection and measurement and control secondary devices, such as complex network architecture, relatively low reliability and fast speed, a design idea of intelligent secondary substation system is proposed. Taking 220kV intelligent substation as Example: Designing the functional architecture, network architecture and configuration of the protection and control system for line spacing, main transformer spacing and busbar spacing. By adopting a multi-functional integrated device and other methods, the solution can drastically reduce the number of devices and the number of optical fibers, improve the reliability and quickness of the protection device, simplify the system network structure, reduce the configuration and debugging workload of virtual terminals, and reduce the difficulty of operation and maintenance.