This paper focuses on applications in the area of WAMS (wide area measurement systems) and WACS (wide area control systems) development. A main issue is the report of an international cooperation oriented to test new algorithms and methods in this field. A feature of the cooperation has been the planning and carrying out of the common full-scale experiment in power systems aimed to investigate the feasibility in the implementation of new technologies of monitoring and control. The cooperation experience of the full-scale experiment at the Russian Far East Interconnected Power System is described in the paper