A CONTROL AREA is a coherent part of the UCTE INTERCONNECTED SYSTEM (usually coincident with the territory of a company, a country or a geographical area, physically demarcated by the position of points for measurement of the interchanged power and energy to the remaining interconnected network), operated by a single TSO, with physical loads and controllable generation units connected within the CONTROL AREA. A CONTROL AREA may be a coherent part of a CONTROL BLOCK that has its own
subordinate control in the hierarchy of SECONDARY CONTROL.Control Block
A CONTROL BLOCK comprises one or more CONTROL AREAS, working together in the SECONDARY CONTROL function, with respect to the other CONTROL BLOCKS of the SYNCHRONOUS AREA it belongs to.Control Area Operator
A CONTROL AREA OPERATOR is the operator of a CONTROL AREA usually a TSO.Control Block Operator
The BLOCK OPERATOR is a single TSO that is responsible for SECONDARY CONTROL of the whole
CONTROL BLOCK towards its interconnected neighbours / blocks, for ACCOUNTING of all CONTROL AREAS of that block, for organisation of the internal SECONDARY CONTROL within the block, and that
operates the overall control of that block.