1. A power system management device configured to manage a system state in a power system, comprising:
a system state candidate calculation unit configured to calculate a plurality of state amounts of the system state based on a predetermined objective function from system characteristic information indicating characteristic information of a system structure including a load, a device, or a power transmission line connected to the power system;
an inter-state distance calculation unit configured to calculate an inter-state distance representing a similarity of values between the plurality of state amounts of the system state which have been calculated by the system state candidate calculation unit; and
a variability evaluation value calculation unit configured to calculate a variability evaluation value in which a variability of each system state is evaluated, based on an objective function value which is calculated from the state amount of the system state which has been calculated by the system state candidate calculation unit and the inter-state distance which has been calculated by the inter-state distance calculation unit, wherein
the system state is selected based on the variability evaluation value calculated by the variability evaluation value calculation unit.
2. The power system management device according to claim 1, wherein
the predetermined objective function includes functions relevant to a fuel cost, a transmission loss, a system stability, or the number of times of a control device operation.
3. The power system management device according to claim 1, wherein
the system state candidate calculation unit weights a plurality of objective functions and calculates the state amount of the system state.
4. The power system management device according to claim 1, wherein
the inter-state distance is calculated based on the state amount of the system state which has a predetermined number of objective function values in ascendingdescending order from the smallestlargest value within the objective function values obtained by the system state candidate calculation unit.
5. The power system management device according to claim 1, wherein
the system characteristic information includes an expected value and a variation value of a system state amount.
6. The power system management device according to claim 1, wherein
the variability evaluation value is calculated regarding the system state which has any of a predetermined number of values of the inter-state distance in ascending order from the smallest value or a value of the inter-state distance within a predetermined threshold among the values of the inter-state distance which have been calculated by the inter-state distance calculation unit.
7. The power system management device according to claim 1, wherein
the variability evaluation value is obtained from an average value of the plurality of objective function values, a difference between the plurality of objective function values, or a value obtained by dividing the value of the inter-state distance by the objective function value.
8. The power system management device according to claim 1, wherein
the state amount of the system state includes a power generation amount by a power generator, a control amount by a power system control device, a power flow amount in the power system, or a voltage amount in the power system.
9. The power system management device according to claim 1, further comprising:
a communication unit configured to obtain information including the system state in the power system.
10. The power system management device according to claim 1, wherein
a control command is transmitted to a control device of the power system based on a determined system state amount of the power system.
11. The power system management device according to claim 1, wherein
a system state amount in a selected system state is displayed.
12. The power system management device according to claim 1, wherein
the system state candidate calculation unit obtains a system state amount which minimizesmaximizes the objective function value by using a method which includes linear programming, nonlinear programming, an interior point method, a genetic algorithm, evolutionary programming, a tabu search, a neural network, or PSO.
13. A power system management method for managing a system state in a power system, comprising:
calculating a plurality of state amounts of the system state based on a predetermined objective function from system characteristic information indicating characteristic information of a system structure including a load, a device, or a power transmission line connected to the power system;
calculating an inter-state distance representing a similarity of values between the plurality of calculated state amounts of the system state;
calculating a variability evaluation value in which a variability of each system state is evaluated based on an objective function value which is calculated from the calculated state amount of the system state and the calculated inter-state distance; and
selecting the system state based on the calculated variability evaluation value.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for providing a personalized mobile advertising service by a mobile terminal in a mobile advertising system, comprising:
receiving a message requesting an advertisement list through an advertising application;
providing the requested advertisement list to a user through the advertising application;
receiving a request message for a predetermined advertisement among advertisements included in the provided advertisement list through the advertising application; and
delivering the requested advertisement to the advertising application.
2. The method of claim 1, wherein providing the requested advertisement list comprises providing incentives of advertisements included in the advertisement list.
3. The method of claim 1, further comprising transmitting state information indicating an absence of the advertisement list to the advertising application, if there is no stored advertisement.
4. The method of claim 1, further comprising:
sending a request for an advertisement to an advertising server, if there is no stored advertisement;
receiving the requested advertisement from the advertising server; and
delivering an advertisement list for the received advertisement to the advertising application.
5. The method of claim 1, further comprising:
receiving update information including a change in a pre-fetched advertisement from an advertising server;
updating the pre-fetched advertisement according to the update information; and
providing the update result to a user through the advertising application.
6. The method of claim 5, further comprising:
receiving a message requesting a list of the pre-fetched advertisements from the advertising server, before receiving the update information; and
delivering the list of the pre-fetched advertisements to the advertising server.
7. The method of claim 5, wherein the updating the pre-fetched advertisement comprises deleting or correcting the pre-fetched advertisement corresponding to an advertisement Identifier (ID) included in the update information.
8. A mobile advertising system for providing a personalized mobile advertising service, comprising:
an advertising server for providing advertisements; and
an advertising engine for receiving an advertisement request through an advertising application, and providing a requested advertisement to the advertising application,
wherein the advertising engine receives a message requesting an advertisement list through the advertising application, and provides the requested advertisement list to a user through the advertising application.
9. The mobile advertising system of claim 8, wherein the requested advertisement list includes incentives of advertisements included therein.
10. The mobile advertising system of claim 8, wherein if there is no stored advertisement, the advertising engine transmits state information indicating an absence of the advertisement list to the advertising application.
11. The mobile advertising system of claim 8, wherein if there is no stored advertisement, the advertising engine sends a request for an advertisement to the advertising server, receives the requested advertisement from the advertising server, and then delivers an advertisement list for the received advertisement to the advertising application.
12. The mobile advertising system of claim 8, wherein the advertising engine receives update information including a change in a pre-fetched advertisement from the advertising server, updates a pre-fetched advertisement according to the update information, and provides an update result to the user through the advertising application.
13. The mobile advertising system of claim 12, wherein the advertising engine receives a message requesting a list of the pre-fetched advertisements from the advertising server, before receiving the update information, and delivers the list of the pre-fetched advertisements to the advertising server.
14. The mobile advertising system of claim 12, wherein the advertising engine updates the pre-fetched advertisement by deleting or correcting the pre-fetched advertisement corresponding to an advertisement Identifier (ID) included in the update information.