Patent ID: 7737677

Claim:
A wide area protection control measurement system for performing protection, control and measurement of an electric power system within a target range, comprising: a plurality of power monitoring terminals installed in an electric-supply station in the target range; one or more electric quantity aggregation devices which are connected to the power monitoring terminals via a communication network; and one or more applied arithmetic operation devices which are connected with the electric quantity aggregation devices via inter-device connection, wherein: each power monitoring terminal constituting the plurality of power monitoring terminals has a data generation means for generating electric quantity data which indicates information on electric quantity by acquiring the electric quantity of the electric power system, and a data transmission means for transmitting the generated electric quantity data via a communication network; each electric quantity aggregation device constituting the one or more electric quantity aggregation devices has a data transmission means for receiving electric quantity data which is transmitted from the one or more power monitoring terminals via the communication network, a data aggregation means for aggregating the received electric quantity data and generating aggregated electric quantity data, and one or more interfaces for inter-device connection to output the generated aggregated electric quantity data; and each applied arithmetic operation device constituting the above-mentioned one or more applied arithmetic operation devices has an interface for inter-device connection to acquire the aggregated electric quantity data which is outputted from the electric quantity aggregation device, and applied arithmetic operation means for performing applied arithmetic operation for protection, control or measurement using the acquired aggregated electric quantity data.