新一代智能变电站采控装置

Sample-Control-Device of Smart Substation

目前智能变电站广泛采用“智能终端+合并单元”过程层设备,但该方式合并单元无法满足“装置内部单一元件的损坏不能造成保护误动作”的基本要求。同时过程层设备间报文大多为一帧模式,一旦报文出现异常往往会导致保护误动。为提高继电保护的可靠性,提出了采集和控制完全双重化的新一代装置架构,探讨电压无缝选择技术、延时可测交换技术、过程层组网、插值算法等关键技术。新一代采控装置大幅提高了智能变电站的可靠性。

At present,smart substations adopt process-level equipment of"intelligent terminals and merging units".In this way,the merging unit cannot meet the basic requirement of"the damage of a single component inside the device cannot cause the protection to malfunction".In the process layer,messages between equipment are mostly in one-frame mode.Once the message is abnormal,it will often cause the protection to malfunction.In order to improve the reliability of relay protection,a new generation device architecture with complete dual is proposed.Key technologies such as voltage seamless selection technology,time-delay measurable switching technology,process layer networking and Lagrange interpolation are proposed.