초록 ▼

A thermal efficiency diagnostic of a combined power generation plant is performed by using measurement data relative to energy input/output of the respective equipment of the combined power generation plant, recording the design values of heat balance, using measurement data having high measuring ac

A thermal efficiency diagnostic of a combined power generation plant is performed by using measurement data relative to energy input/output of the respective equipment of the combined power generation plant, recording the design values of heat balance, using measurement data having high measuring accuracy as standard parameters, conducting an optimum state estimation by adjusting the key parameters, which largely affect the diagnostic results so as to be consistent with the standard parameters, so that each deviation of the reference parameters becomes minimum and the probability of the heat balance becomes maximum in a whole plant, comparing the heat balance thus determined with the heat balance based on a design value, analyzing the degree of contribution of performance of each equipment to the thermal efficiency and specifying the equipment which causes the thermal efficiency deterioration in accordance with the degree of contribution.

대표청구항 ▼

A thermal efficiency diagnostic of a combined power generation plant is performed by using measurement data relative to energy input/output of the respective equipment of the combined power generation plant, recording the design values of heat balance, using measurement data having high measuring ac

A thermal efficiency diagnostic of a combined power generation plant is performed by using measurement data relative to energy input/output of the respective equipment of the combined power generation plant, recording the design values of heat balance, using measurement data having high measuring accuracy as standard parameters, conducting an optimum state estimation by adjusting the key parameters, which largely affect the diagnostic results so as to be consistent with the standard parameters, so that each deviation of the reference parameters becomes minimum and the probability of the heat balance becomes maximum in a whole plant, comparing the heat balance thus determined with the heat balance based on a design value, analyzing the degree of contribution of performance of each equipment to the thermal efficiency and specifying the equipment which causes the thermal efficiency deterioration in accordance with the degree of contribution. epresenting a location of a guiding point and a navigation message corresponding to the guiding point, from the communication base station via the communication line; a memory device for storing the guiding information received by the first receiving device; and a voice processing device for outputting the navigation message corresponding to the guiding point in voice format, based on the current location information output by the current location detection device and the information representing the location of the guiding point which is included in the guiding information stored in the memory device; and the communication base station includes: a map information database storing map information; a second receiving device for receiving the current location information and the destination information from the navigation apparatus via the communication line; a search device for searching through the map information database based on the current location information and the destination information received by the second receiving device, so as to acquire the guiding information; and a second sending device for sending the guiding information to the navigation apparatus via the communication line. 12. A navigation method for guiding a moving body from a current location to a destination, using a navigation system including a navigation apparatus and a communication base station, the navigation apparatus including a current location detection device for detecting a current location of the moving body and outputting current location information representing the current location, and a memory device; and the communication base station including a map information database storing map information, the navigation method comprising the steps of: the navigation apparatus sending the current location information and destination information representing a destination of the moving body via a communication line to the communication base station; the communication base station searching through the map information database based on the current location information and the destination information, so as to acquire guiding information, which is required to guide the moving body from the current location to the destination and includes information representing a location of a guiding point and a navigation message corresponding to the guiding point; the communication base station sending the guiding information to the navigation apparatus via the communication line; the navigation apparatus storing the guiding information sent from the communication base station in the memory device; and the navigation apparatus outputting the navigation message corresponding to the guiding point in voice format, based on the current location information output by the current location detection device and the information representing the location of the guiding point which is included in the guiding information stored in the memory device. 13. A navigation method according to claim 12, wherein the communication base station further includes a category database storing information classified by category, the navigation method comprising the steps of: the communication base station searching the category database, so as to acquire information representing at least one candidate for the destination and calculate a distance or a time to each candidate of the at least one candidate from the current location; and the communication base station sending the information representing the at least one candidate and information representing the distance or the time to the navigation apparatus via the communication line. 14. A navigation method according to claim 1