Method for remote monitoring of gas turbine
First Claim
1. A method for monitoring at a remote monitoring center a turbine driven by a supply of high temperature combustion gas generated by combustion in a combustor, the method comprising:
- first receiving and monitoring a second data including representative values within a predetermined period of time in a first communications mode at a plant in which the turbine is installed, wherein the second data is generated based on a first data concerning a combustion oscillation of the combustion gas in the combustor obtained on a real-time basis in a normal state; and
second receiving and monitoring the first data from the plant in a second communications mode at a speed which is higher than a speed of the first communications mode in the event of an abnormal state in which the second data is close to a value representing a predetermined critical state, wherein an instruction is sent to the plant to reduce turbine operation power when a symptom is detected of the predetermined critical state from the monitored first data.
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Accused Products
Abstract
The state of combustion oscillation in the combustor of a turbine of a power plant is monitored from a remote monitoring center. To monitor the combustion oscillation state, combustion oscillation data on the combustor is separated into two types of data: the first data obtained on a real-time basis, and the second data including representative values within a predetermined period of time obtained from the first data. In the normal state, a low-speed communications mode is used to send the second data, which is monitored at the monitoring center. If an abnormal state is predicted as a result of monitoring the second data, the high-speed communications mode is used to send the first data, and more detailed combustion oscillation data is monitored at the monitoring center. When a critical state is predicted, an instruction is sent to the local site to switch the operation mode over to the low load operation mode.
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Citations
15 Claims
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1. A method for monitoring at a remote monitoring center a turbine driven by a supply of high temperature combustion gas generated by combustion in a combustor, the method comprising:
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first receiving and monitoring a second data including representative values within a predetermined period of time in a first communications mode at a plant in which the turbine is installed, wherein the second data is generated based on a first data concerning a combustion oscillation of the combustion gas in the combustor obtained on a real-time basis in a normal state; and
second receiving and monitoring the first data from the plant in a second communications mode at a speed which is higher than a speed of the first communications mode in the event of an abnormal state in which the second data is close to a value representing a predetermined critical state, wherein an instruction is sent to the plant to reduce turbine operation power when a symptom is detected of the predetermined critical state from the monitored first data. - View Dependent Claims (2, 3, 4, 5, 6)
checking whether a first combination data containing a combination of the first data and turbine operation parameter values is similar to a second combination data leading to the critical state in a plant; and
issuing a predetermined notice if the first and second combination data are similar.
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7. A turbine monitoring system comprising a plant in which a turbine is driven by a supply of high temperature combustion gas generated by combustion in a combustor, and a turbine monitoring center which is connected via a communications line to the plant and located in a place remote from the plant,
wherein the monitoring center comprises: -
first means for receiving and displaying a second data comprising representative values within a predetermined period of time from the plant in a first communications mode, wherein the second data is generated based on a first data concerning combustion oscillations of the combustion gas in the combustor obtained on a real-time basis in a normal state, and second means for receiving the first data from the plant in a second communications mode at a speed which is higher than a speed of the first communications mode in the event of an abnormal state in which the second data is close to a value representing a predetermined critical state, and wherein an instruction is sent to the plant to reduce turbine operation power when a symptom is detected of the predetermined critical state from the first data.
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8. A method for monitoring at a remote monitoring center a turbine driven by a supply of high temperature combustion gas generated by combustion in a combustor, the method comprising:
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first receiving and monitoring a second data containing representative values within a predetermined period of time in a first communications mode at a plant in which the turbine is installed, wherein the second data is generated based on a first data concerning an operational state of the turbine obtained on a real-time basis in a normal state; and
second receiving and monitoring first data from the plant in a second communications mode at a speed which is higher than a speed of the first communications mode in the event of an abnormal state in which the second data is close to a value representing a predetermined critical state, wherein an instruction is sent to the plant to reduce turbine operation power when a symptom is detected of the predetermined critical state from the monitored first data.
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9. A remote-controllable plant comprising a turbine which is driven by a supply of high temperature combustion gas generated by combustion in a combustor, the plant further comprising:
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means for detecting first data on combustion oscillation of the combustion gas in the combustor on a real-time basis in a normal state;
means for generating second data including representative values within a predetermined period of time based on the first data;
first communications means for transmitting the second data in a first communications mode from the plant in which the turbine is installed; and
second communications means for transmitting and receiving the first data from the plant in a second communications mode at a speed which is higher than a speed of the first communications mode in the event of an abnormal state when the second data is close to a value representing a predetermined critical state, wherein an instruction is sent to the plant to reduce turbine operation power when a symptom is detected of the predetermined critical state from the first data. - View Dependent Claims (10, 11, 12)
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13. A monitoring center for remote-controlling a plant including a turbine which is driven by a supply of high temperature combustion gas generated by combustion in a combustor, comprising:
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first communications means for receiving a second data including representative values within a predetermined period of time from the plant in a first communications mode, wherein the second data is generated based on a first data on combustion oscillation of the combustion gas in the combustor obtained on a real-time basis in a normal state; and
second communications means for receiving the first data from the plant in a second communications mode at a speed which is higher than a speed of the first communications mode in the event of an abnormal state in which the second data is close to a value representing a predetermined critical state, wherein an instruction is sent to the plant to reduce turbine operation power when a symptom is detected of the predetermined critical state from the first data. - View Dependent Claims (14, 15)
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Specification