Online diagnostic method and online diagnostic system for geothermal generation facility
First Claim
1. An online diagnosis method for a geothermal generation facility comprising the steps of:
- receiving analysis data online from an automatic steam measurement device that measures a characteristic of steam to be supplied to a steam turbine from a steam-water separator at the geothermal generation facility and measures performance data of the geothermal generation facility, wherein the analysis data is at least a silica concentration and either a chloride ion concentration or acid conductivity and the performance data is at least steam flow and hot water flow separated by the steam-water separator;
accumulating the analysis data and the performance data online; and
diagnosing the geothermal generation facility based on the accumulated analysis data, the accumulated performance data, and a predetermined managing upper limit or a predetermined operation recommended value for each data.
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Accused Products
Abstract
An online diagnostic system for a geothermal generation facility is discloses that includes an automatic steam measurement device for measuring a characteristic of steam to be supplied to a steam turbine from a steam-water separator at the geothermal generation facility that outputs analysis data. A monitor-control device controls an operation of the geothermal generation facility while monitoring the geothermal generation facility. A diagnostic device performs at least one of an evaluation of a steam characteristic at the geothermal generation facility, an evaluation of the steam-water separator, and an evaluation of pulsation and confluence of a production well based on the analysis data from the automatic steam measurement device and performance data of the geothermal generation facility from the monitor-control device. An operating status of the geothermal generation facility is diagnosed.
28 Citations
9 Claims
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1. An online diagnosis method for a geothermal generation facility comprising the steps of:
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receiving analysis data online from an automatic steam measurement device that measures a characteristic of steam to be supplied to a steam turbine from a steam-water separator at the geothermal generation facility and measures performance data of the geothermal generation facility, wherein the analysis data is at least a silica concentration and either a chloride ion concentration or acid conductivity and the performance data is at least steam flow and hot water flow separated by the steam-water separator; accumulating the analysis data and the performance data online; and diagnosing the geothermal generation facility based on the accumulated analysis data, the accumulated performance data, and a predetermined managing upper limit or a predetermined operation recommended value for each data. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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2. An online diagnosis method for a geothermal generation facility comprising the steps of:
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receiving analysis data online from an automatic steam measurement device that measures a characteristic of steam to be supplied to a steam turbine from a steam-water separator at the geothermal generation facility and measures performance data of the geothermal generation facility, wherein the analysis data is at least a silica concentration, either a chloride ion concentration or acid conductivity, a non-condensable gas concentration, and pH and the performance data is at least steam flow and hot water flow separated by the steam-water separator; accumulating the analysis data and the performance data in a time-series manner and storing in a data storage unit; and diagnosing the geothermal generation facility based on the received data, wherein diagnosing includes determining that the silica concentration and either the chloride ion concentration or the acid conductivity accumulated and stored in the data storage unit do not reach a predetermined managing upper limit or a predetermined operation recommended value and predicting a deviation of the analysis data and the performance data from the predetermined managing upper limit or the predetermined operation recommended value based on a statistic calculation and a principle component analysis, which is a multivariate analysis. - View Dependent Claims (9)
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Specification