Energy management device and operation method therefor

1. An energy management device comprising:

a communication unit configured to receive energy information of a system to which the energy management device belongs;

a controller configured to acquire energy position where energy is consumed or supplied and an amount of energy consumed or supplied at each energy position based on the received energy information; and

a display unit configured to display at least one energy information icon based on the acquired energy position and the amount of energy; and

the controller configured to display at least one second energy information icon corresponding to a low level of a first energy information icon when a command for selecting an expansion icon included in the first energy information icon is received and to connect the first energy information icon with the second energy information icon through an energy node,

wherein a thickness of the energy node is displayed differently according to the amount of moved energy between a position corresponding to the first energy information icon and a position corresponding to the second energy information icon,

wherein the controller increases the thickness of the energy node in proportion to the amount of energy corresponding to the second energy information icon, and

wherein the controller displays the first and second energy information icons having different sizes according to the amount of energy at position corresponding to each energy information icon, and increases the sizes of the first and second energy information icons in proportion to the amounts of energy of the first and second energy information icons,

wherein the controller further configured to:

display a problem occurrence list indicating an energy related problem occurring in the system to which the energy management device belongs,

when a command for selecting any one item from the problem occurrence list is received, acquire a problem occurrence position corresponding to the selected item,

display an energy information icon of a highest level, an energy information icon corresponding to the acquired problem occurrence position and at least one energy information icon included between the highest level and the problem occurrence position, and

connect the energy information icon of a highest level, the energy information icon corresponding to the acquired problem occurrence position and the least one energy information icon included between the highest level and the problem occurrence position with the energy node having different thickness depending on an amount of energy transfer between energy information icons.

2. The energy management device according to claim 1 , wherein the controller further displays an energy information icon of the same level as the displayed at least one energy information icon.

3. The energy management device according to claim 2 , wherein the controller displays the energy information icon corresponding to the problem occurrence position to be distinguished from the other energy information icons.

4. The energy management device according to claim 2 , wherein the controller displays at least one energy information icon corresponding to a direct path from the highest level to the problem occurrence position to be distinguished from the other energy information icons.

5. The energy management device according to claim 1 , wherein, when a command for selecting any one of the displayed at least one energy information icon is received, the controller displays change in energy data at an energy position corresponding to the selected energy information icon on a timeline with time.

6. The energy management device according to claim 5 , wherein the timeline further includes change in energy data at an energy position corresponding from the selected energy information icon to an energy information icon of a predetermined low level.

7. The energy management device according to claim 5 , wherein, when a command for selecting any one point in time from the timeline is received, the controller displays an energy information icon indicating the amount of energy corresponding to the selected point in time.

8. The energy management device according to claim 1 , wherein the energy information icon includes an energy position item indicating a device or energy source in or to which energy is consumed or supplied and an energy amount item indicating the amount of consumed or supplied energy.

9. The energy management device according to claim 8 , wherein the system is a power system for a power plant, and wherein the amount of energy is the amount of energy supplied to the system.

10. The energy management device according to claim 8 , wherein the system is a power system for a place of use, and wherein the amount of energy is the amount of energy consumed in the system.

11. The energy management device according to claim 10 , wherein the communication unit receives energy information from at least one energy consumption device included in the system.

12. The energy management device according to claim 1 , wherein the communication unit receives energy information from an energy metering device included in the system.