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Our decentralized systems are contributing
to the stable operation of power systems.
Since it is difficult to store the large amounts of electrical energy, the power generation and consumption must be balanced always in order to keep high-quality power supply.
The Energy Management System (EMS) is necessary to establish the operation schedule and remote control with the capability of controlling the voltage and power flow properly for ever-changing power consumption, scheduling the planned outage of power system equipment such as power transmission lines and transformers for the inspection and repair, and taking measures in case of contingency.
Hitachi supports these EMSs in all levels from entire area system level such as central load dispatching center to regional level and distribution level also in all service range from supply and demand operation and power dispatching operation to distribution operation.
Central load dispatching center
A huge electric power grid is structured in hierarchy and distributed in a wide area to maintain high reliability. This technology provides optimum and autonomous supervisory control of the system by dividing it into three parts: hierarchy, region and function.