According to the IEC 61850 serial standards and the syntax and semantic of substation configuration language (SCL)
some practical issues about the application of SCL in terms of IED configuration in substation communication system are described. Some conflicting questions about SCL Schema are put forward and one or two careless omission is pointed out in the text. The problems include: How to express the data attribute
which has two or more kinds of function restraint values? The attribute name begins with the capital letter
i.e. attribute SBO
which is not conforming to the attribute name standard in Schema; The value of attribute datSet of all kinds of control block elements is null; The type of element ConfDataSet is wrong; In the simple unit enumerates "SIUnit"
No. 38 and No. 62 repeatedly use W to express. The corresponding solving methods and proposals are given for the issues above.