CN106761965A - The steam turbine load fluctuation on-line monitoring method that a kind of timing steam gate bite judges - Google Patents
The steam turbine load fluctuation on-line monitoring method that a kind of timing steam gate bite judges Download PDFInfo
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- CN106761965A CN106761965A CN201611093231.7A CN201611093231A CN106761965A CN 106761965 A CN106761965 A CN 106761965A CN 201611093231 A CN201611093231 A CN 201611093231A CN 106761965 A CN106761965 A CN 106761965A
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- bite
- steam
- gate
- timing
- judges
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
Abstract
The invention discloses the steam turbine load fluctuation on-line monitoring method that a kind of timing steam gate bite judges, including following six step：A obtains the servomotor stroke and valve opening relation of Steam Turhine Adjustment porthole；B real-time monitoring Steam Turhine Adjustment porthole running statuses；C obtains the position command of timing steam gate in real time；D obtains the traveled distance aperture of timing steam gate in real time；E is compared to the position command and traveled distance aperture of timing steam gate, judges whether bite；Such as there is bite in f, alarmed immediately, prevents steam turbine load to fluctuate and causes unit or power grid accident.The present invention can realize the security and stability of the anticipation in advance of steam turbine load fluctuation accident, lifting unit and operation of power networks.
Description
Technical field
The invention belongs to thermal power generating technology field, more particularly to the steam turbine load ripple that a kind of timing steam gate bite judges
Dynamic on-line monitoring method.
Background technology
Research finds that the load unusual fluctuations of Turbo-generator Set are one of main inducings of electricity grid oscillating.As early as possible
It was found that and suppress the load unusual fluctuations of Turbo-generator Set, be the important means for ensureing power network safety operation.
The reason for Turbo-generator Set load unusual fluctuations, is a lot, and the pitch bite under power closed-loop control is a class weight
Want reason.Under normal circumstances, power close loop control circuit will adjust each timing steam gate, by generator power adjustment stabilization in target
Value.When certain pitch occurs bite, its running-active status will not controlled by DEH systems, the state in while moving " when motionless ".
If the response of other portholes and the abnormal operation of the failure porthole occur it is positive couple, will cause generator power fluctuation,
Vibration even dissipates.
Therefore, it is badly in need of a kind of monitoring method, whether monitoring each timing steam gate of steam turbine occurs bite.When confirmation occurs bite
When, and alarm and take measures, prevent steam turbine load to fluctuate and cause unit or power grid accident.Realize that steam turbine load fluctuates
The security and stability of the anticipation in advance of accident, lifting unit and operation of power networks.
The content of the invention
The technical problem to be solved in the present invention is：There is provided a kind of steam turbine load fluctuation of timing steam gate bite judgement online
Monitoring method, can judge online Steam Turhine Adjustment porthole whether bite, by on-line monitoring prevent steam turbine load to fluctuate.
The technical scheme that the present invention takes is：The steam turbine load fluctuation on-line monitoring side that a kind of timing steam gate bite judges
Method, the method is comprised the following steps：
Step 1, the servomotor stroke and valve opening relation that obtain Steam Turhine Adjustment porthole, servomotor stroke and valve opening are closed
System is obtained by static test；
Step 2, real-time monitoring Steam Turhine Adjustment porthole running status, judge running status, if operational excellence, into step 3, instead
It, end judges and alarms；
Step 3, the position command for obtaining timing steam gate in real time；
Step 4, the traveled distance aperture for obtaining timing steam gate in real time；
Step 5, the position command to timing steam gate and traveled distance aperture are compared, and judge whether bite, if there is bite,
Into step 6, step 1 is otherwise turned to；
Step 6, alarmed immediately, prevent steam turbine load to fluctuate and cause unit or power grid accident.
Bite determination methods are in above-mentioned steps 5：Calculate the difference of position command signal CMD and traveled distance aperture FBK
α=|CMD-FBK|/FBK×100%
As α >=δ, δ is empirical value, and δ takes 20%, and the state, when continuing the t seconds above, t is empirical value, and t takes 10 seconds, the regulation vapour
There is bite in door；Conversely, there is no bite.
Beneficial effects of the present invention：Compared with prior art, using computational methods of the invention and decision method, Ke Yishi
The anticipation in advance of existing steam turbine load fluctuation accident, whether real-time online Steam Turhine Adjustment porthole there is bite, to turbine negative
Lotus fluctuation carries out anticipation, prevents unit cancel closedown or initiation electricity grid oscillating caused by the power of the assembling unit fluctuates, and lifts unit
With the security and stability of operation of power networks.
Brief description of the drawings
Fig. 1 is monitoring schematic flow sheet of the invention.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described further to the present invention.
Embodiment 1：The steam turbine load fluctuation on-line monitoring method that a kind of timing steam gate bite judges, the method include with
Lower step：
Step 1, servomotor stroke and valve opening relation that Steam Turhine Adjustment porthole is obtained by static test；
Step 2, by function real-time monitoring Steam Turhine Adjustment porthole running statuses such as the bad Quality estimations of DEH systems, it is ensured that control
Make instruction and actual feedback is true, accurate, if being judged as in good condition, execution step 3, conversely, end judges and alarms；
Step 3, the position command for obtaining timing steam gate in real time, obtain DEH systems and are sent out to each timing steam gate in real time by DEH systems
The opening degree instruction for going out；
Step 4, the traveled distance aperture for obtaining timing steam gate in real time, obtain each timing steam gate LVDT and survey in real time by DEH systems
The traveled distance aperture measured, i.e. open degree feedback；
Step 5, the position command to timing steam gate and traveled distance aperture are compared, and judge whether bite；Position is calculated to refer to
Make the difference of signal CMD and traveled distance aperture FBK：
α=|CMD-FBK|/FBK×100%
As α >=δ, δ is empirical value, and δ takes 20%, and the state, when continuing the t seconds above, t is empirical value, and t takes 10 seconds, the regulation vapour
There is bite in door, into step 6；Conversely, there is no bite, step 1 is turned to, again to the collection of data；
Step 6, alarmed immediately, prevent steam turbine load to fluctuate and cause unit or power grid accident.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain
Cover within protection scope of the present invention, therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (3)
1. the steam turbine load fluctuation on-line monitoring method that a kind of timing steam gate bite judges, it is characterised in that：The method includes
Following steps：
Step 1, the servomotor stroke and valve opening relation that obtain Steam Turhine Adjustment porthole；
Step 2, real-time monitoring Steam Turhine Adjustment porthole running status, judge running status, if operational excellence, into step 3, instead
It, end judges and alarms；
Step 3, the position command for obtaining timing steam gate in real time；
Step 4, the traveled distance aperture for obtaining timing steam gate in real time；
Step 5, the position command to timing steam gate and traveled distance aperture are compared, and judge whether bite, if there is bite,
Into step 6, step 1 is otherwise turned to；
Step 6, alarmed immediately.
2. the steam turbine load fluctuation on-line monitoring method that a kind of timing steam gate bite according to claim 1 judges, its
It is characterised by：Servomotor stroke and valve opening relation are obtained by static test in step 1.
3. the steam turbine load fluctuation on-line monitoring method that a kind of timing steam gate bite according to claim 1 judges, its
It is characterised by：Bite determination methods are in step 5：Calculate the difference of position command signal CMD and traveled distance aperture FBK
α=|CMD-FBK|/FBK×100%
As α >=δ, δ is empirical value, and the state continue the t second above when, t is empirical value, the timing steam gate generation bite；Conversely,
Generation bite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093231.7A CN106761965B (en) | 2016-12-02 | 2016-12-02 | The steam turbine load fluctuation on-line monitoring method that a kind of timing steam gate bite judges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093231.7A CN106761965B (en) | 2016-12-02 | 2016-12-02 | The steam turbine load fluctuation on-line monitoring method that a kind of timing steam gate bite judges |
Publications (2)
| Publication Number | Publication Date |
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| CN106761965A true CN106761965A (en) | 2017-05-31 |
| CN106761965B CN106761965B (en) | 2018-06-22 |
Family
ID=58913841
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611093231.7A Active CN106761965B (en) | 2016-12-02 | 2016-12-02 | The steam turbine load fluctuation on-line monitoring method that a kind of timing steam gate bite judges |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764534A (en) * | 2017-10-16 | 2018-03-06 | 贵州电网有限责任公司电力科学研究院 | A kind of method for preventing Steam Turbine's Main Vaper Valve total travel movement test oscillation of power |
| CN110878709A (en) * | 2018-09-05 | 2020-03-13 | 上海电气电站设备有限公司 | Method for establishing jam recognition mechanism of steam turbine valve and jam recognition method |
| CN113531513A (en) * | 2021-07-28 | 2021-10-22 | 哈尔滨沃华智能发电设备有限公司 | Protection method of steam drum water level control system during steam inlet regulating valve failure of steam-driven water supply pump |
| CN113586173A (en) * | 2021-08-31 | 2021-11-02 | 鄂尔多斯市君正能源化工有限公司热电分公司 | Method for judging jam of steam turbine governor |
| CN113958760A (en) * | 2021-12-21 | 2022-01-21 | 中国空气动力研究与发展中心超高速空气动力研究所 | Method and device for processing jamming of execution mechanism |
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| FR2910620A1 (en) * | 2006-12-22 | 2008-06-27 | Renault Sas | Actuating rod displacement measuring unit for turbocompressor of internal combustion engine, has measurement rod placed in rigid arm that is rigidly connected to actuating rod, where measurement rod measures displacement of actuating rod |
| CN201502410U (en) * | 2009-09-07 | 2010-06-09 | 上海宝钢设备检修有限公司 | Static debugging device of steam turbine speed control system |
| US20120167567A1 (en) * | 2011-01-03 | 2012-07-05 | General Electric Company | Power generation apparatus |
| CN103953399A (en) * | 2014-05-19 | 2014-07-30 | 国家电网公司 | Monitoring device and online monitoring method of quick closing process of steam turbine inlet valve |
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| CN2871853Y (en) * | 2005-11-11 | 2007-02-21 | 南京科远控制工程有限公司 | Valve-level controller |
| FR2910620A1 (en) * | 2006-12-22 | 2008-06-27 | Renault Sas | Actuating rod displacement measuring unit for turbocompressor of internal combustion engine, has measurement rod placed in rigid arm that is rigidly connected to actuating rod, where measurement rod measures displacement of actuating rod |
| CN201502410U (en) * | 2009-09-07 | 2010-06-09 | 上海宝钢设备检修有限公司 | Static debugging device of steam turbine speed control system |
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| CN103953399A (en) * | 2014-05-19 | 2014-07-30 | 国家电网公司 | Monitoring device and online monitoring method of quick closing process of steam turbine inlet valve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764534A (en) * | 2017-10-16 | 2018-03-06 | 贵州电网有限责任公司电力科学研究院 | A kind of method for preventing Steam Turbine's Main Vaper Valve total travel movement test oscillation of power |
| CN107764534B (en) * | 2017-10-16 | 2019-05-07 | 贵州电网有限责任公司电力科学研究院 | A method of preventing Steam Turbine's Main Vaper Valve total travel movement test oscillation of power |
| CN110878709A (en) * | 2018-09-05 | 2020-03-13 | 上海电气电站设备有限公司 | Method for establishing jam recognition mechanism of steam turbine valve and jam recognition method |
| CN110878709B (en) * | 2018-09-05 | 2023-02-24 | 上海电气电站设备有限公司 | Method for establishing jam recognition mechanism of steam turbine valve and jam recognition method |
| CN113531513A (en) * | 2021-07-28 | 2021-10-22 | 哈尔滨沃华智能发电设备有限公司 | Protection method of steam drum water level control system during steam inlet regulating valve failure of steam-driven water supply pump |
| CN113586173A (en) * | 2021-08-31 | 2021-11-02 | 鄂尔多斯市君正能源化工有限公司热电分公司 | Method for judging jam of steam turbine governor |
| CN113958760A (en) * | 2021-12-21 | 2022-01-21 | 中国空气动力研究与发展中心超高速空气动力研究所 | Method and device for processing jamming of execution mechanism |
| CN113958760B (en) * | 2021-12-21 | 2022-03-04 | 中国空气动力研究与发展中心超高速空气动力研究所 | Method and device for processing jamming of execution mechanism |
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| Publication number | Publication date |
|---|---|
| CN106761965B (en) | 2018-06-22 |
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