A protection function model of metro DC feeder is established according to IEC 61850,including the logical nodes of definite time over-current protection PTOC,low voltage protection PTUV and cable thermal overload protection PTTR,and creation of the logical node classes of current-rising-rate and current increment protection PDDL(DDL protection)and frame-work leakage protection PFLC.It uses virtual terminal to construct information interaction model(virtual input/output infor-mation model)between protection intelligent electronic device(IED)and other devices.The Inputs in the standard are used to describe the information interaction model of the logical nodes in the protection IED.The cases of IED information interaction between three adjacent metro substations show that the action information flow of the two mutual transfer tripping protection can be clearly displayed through the metro DC feeder protection information model,which verifies the rationality and possibility of the scheme.
关键词
IEC/61850标准/地铁直流馈线保护/虚端子/信息交互模型
Key words
IEC 61850/metro DC feeder protection/virtual terminal/information interaction model
维普
万方数据