From GridLAB-D Wiki
sanitize_prefix - Specifies the sanitized name prefix to use when generating obfuscated names
Synopsis
host% gridlabd -D|--define sanitize_prefix=prefix
Remarks
The sanitizing prefix is used to construct obfuscated names that are guaranteed not to begin with a digit. In addition, the prefix can be used to generate names that are globally unique, if desired.
The default prefix is "GLD_".