新一代智能变电站母线合并单元工程应用技术研究

当母线合并单元故障,众多间隔的二次装置失压。在智能变电站扩建时,因母线合并单元输入输出通信协议不标准,新增间隔电子互感器(含合并单元)接入困难。采用母线电压互感器按终期新建、间隔合并单元级联按母线段划分、母线合并单元SV/FT3插件冗余等方法,使母线合并单元工程应用合理化。提出标准化合并单元规约、简化过程层网络建议,解决母线合并单元在变电站二次设备中的瓶颈问题。

A Study on Engineering Application Technology of Bus Merging Unit in New Generation Smart Substations

When a fault occurs with the bus line merging unit,many spaced secondary devices will lose voltage value.In expansion of smart substations,because of non-standard transmission protocol for the input and output of the bus line merging unit,additional spaced electronic transformers (including merging unit) are difficult to access.Bus voltage transformers are constructed according to their final term,spaced merging unit cascade is divided by bus section,and bus merging unit SV/FT3 plug-in redundancy is offered so that engineering application of bus merging units is rationalized.It is proposed to standardize the merging unit protocol and simplify the process-level network to solve the bottleneck problem of the bus merging unit in secondary equipment of the substation.