CN104121044A - Method for safety control over shunt tripping of electric generator through emergency governor of steam turbine - Google Patents
Method for safety control over shunt tripping of electric generator through emergency governor of steam turbine Download PDFInfo
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- CN104121044A CN104121044A CN201410353454.7A CN201410353454A CN104121044A CN 104121044 A CN104121044 A CN 104121044A CN 201410353454 A CN201410353454 A CN 201410353454A CN 104121044 A CN104121044 A CN 104121044A
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Abstract
The invention discloses a method for safety control over shunt tripping of an electric generator through an emergency governor of a steam turbine. The steam turbine, the electric generator and a steam pipeline are adopted in the method, wherein the electric generator is controlled by an electric generator comprehensive protection device, the steam pipeline is communicated with the steam turbine and provided with a main steam valve fast valve, and the emergency governor controlling the steam turbine controls the main steam valve fast valve to be turned on or turned off through an oil circuit control system. The method comprises the steps that firstly, a sensor for detecting the on-off state of the main steam valve fast valve is arranged on the main steam valve fast valve and is connected with the electric generator comprehensive protection device; secondly, the emergency governor is beaten when the steam turbine breaks down, and the emergency governor controls the main steam valve fast valve to close the steam pipeline, so that the steam turbine stops operating; thirdly, at the moment, the sensor detects that the main steam valve fast valve closes the steam pipeline and sends a signal about the situation that the main steam valve fast valve closes the steam pipeline to the electric generator comprehensive protection device; fourthly, the electric generator comprehensive protection device stops the electric generator after receiving the signal. The method has the advantage of high safety performance.
Description
Technical field
The present invention relates to a kind of turbine emergency protector connection and jump the method for controlling security of generator.
Background technique
In the electric power plant that uses steam turbine and generator to generate electricity, provide the steam line of steam to be connected with steam turbine by main inlet throttle-stop valve fast valve, steam turbine is connected with generator coaxle.When steam turbine fault, press emergency overspeed governor, emergency overspeed governor makes main inlet throttle-stop valve fast valve steam off pipeline by oil path control system, steam line is stopped to steam turbine steam supply, and then steam turbine is quit work, but can not join stop jumping when emergency overspeed governor stops steam turbine, stop generator; When steam turbine stops and generator when not joining stop jumping and stopping simultaneously, can cause reverse-power in the generator protection, time to grow can causing electric substation to jump electrification to power station power supply line, for the production safety of electric power plant has been buried major hidden danger.
Summary of the invention
The object of this invention is to provide a kind of a kind of turbine emergency protector connection that can simultaneously close steam turbine and generator while pressing emergency overspeed governor and jump the method for controlling security of generator.
For achieving the above object; the present invention has adopted following technological scheme: described a kind of turbine emergency protector connection is jumped the method for controlling security of generator; comprise by generator comprehensive protector and control the generator of opening or closing; the steam turbine being connected with generator coaxle; and the steam line being connected with steam turbine; on steam line, be provided with the main inlet throttle-stop valve fast valve that can open or close steam line; the emergency overspeed governor of control steam turbine is controlled main inlet throttle-stop valve fast valve by oil path control system and is opened or closed steam line, comprises the following steps:
(1) first on main inlet throttle-stop valve fast valve, arrange in order to detect the sensor of main inlet throttle-stop valve fast valve on off state, sensor is connected with generator comprehensive protector;
(2) when steam turbine breaks down, press emergency overspeed governor, emergency overspeed governor is controlled main inlet throttle-stop valve fast valve steam off pipeline by oil path control system, and after steam line is closed, steam turbine quits work;
(3) now the sensor on main inlet throttle-stop valve fast valve detects main inlet throttle-stop valve fast valve after steam off pipeline, can at once the main inlet throttle-stop valve fast valve signal of steam off pipeline be sent to generator comprehensive protector;
(4) generator comprehensive protector receives that main inlet throttle-stop valve fast valve after the signal of steam off pipeline, can send excitation connection to generator and jump signal, and generator is received after this excitation connection is jumped signal and quit work.
Further, aforesaid a kind of turbine emergency protector connection is jumped the method for controlling security of generator, wherein: described sensor comprises: be installed on the block on the valve rod of main inlet throttle-stop valve fast valve, and being arranged on the main inlet throttle-stop valve quick closing valve limit switch on main inlet throttle-stop valve fast valve, main inlet throttle-stop valve quick closing valve limit switch is connected with generator comprehensive protector; When main inlet throttle-stop valve fast valve steam off pipeline, the block on main inlet throttle-stop valve fast valve valve rod is just in time touched main inlet throttle-stop valve quick closing valve limit switch, and main inlet throttle-stop valve quick closing valve limit switch is sent to generator comprehensive protector by the main inlet throttle-stop valve fast valve signal of steam off pipeline.
By the enforcement of technique scheme, when having advantages of the emergency overspeed governor of pressing, the present invention can close steam turbine and generator simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of turbine emergency protector of the present invention joins emergency overspeed governor connection jumping generator control unit in the method for controlling security of jumping generator.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, described a kind of turbine emergency protector connection is jumped the method for controlling security of generator, comprise by generator comprehensive protector 1 and control the generator 2 of opening or closing, with the coaxial steam turbine being connected 3 of generator 2, and the steam line 4 being connected with steam turbine 3, on steam line 4, be provided with the main inlet throttle-stop valve fast valve 5 that can open or close steam line 4, the emergency overspeed governor 6 of controlling steam turbine 3 opens or closes steam line 4 by oil path control system 7 control main inlet throttle-stop valve fast valves 5; Comprise the following steps:
(1) first on main inlet throttle-stop valve fast valve 5, be provided with to detect the sensor of main inlet throttle-stop valve fast valve on off state, sensor is connected with generator comprehensive protector 1;
(2) when steam turbine 3 breaks down, press emergency overspeed governor 6, emergency overspeed governor 6 is controlled main inlet throttle-stop valve fast valve 5 steam off pipelines 4 by oil path control system 7, and after steam line 4 is closed, steam turbine 3 quits work;
(3) now the sensor on main inlet throttle-stop valve fast valve 5 detects main inlet throttle-stop valve fast valve 5 after steam off pipeline 4, can the main inlet throttle-stop valve fast valve 5 signal of steam off pipeline 4 be sent to generator comprehensive protector 1 simultaneously;
(4) generator comprehensive protector 1 receives that main inlet throttle-stop valve fast valve 5 after the signal of steam off pipeline 4, can send excitation connection to generator 2 and jump signal, and generator 2 is received after this excitation connection is jumped signal and quit work.
In the present embodiment, described sensor comprises: be installed on the block 8 on main inlet throttle-stop valve fast valve 5 valve rods, and be arranged on the main inlet throttle-stop valve quick closing valve limit switch 9 on main inlet throttle-stop valve fast valve 5, main inlet throttle-stop valve quick closing valve limit switch 9 is connected with generator comprehensive protector 1; When main inlet throttle-stop valve fast valve 5 steam off pipeline 4, block 8 on main inlet throttle-stop valve fast valve 1 valve rod is just in time touched main inlet throttle-stop valve quick closing valve limit switch 9, main inlet throttle-stop valve quick closing valve limit switch 9 is sent to generator comprehensive protector 1 by the main inlet throttle-stop valve fast valve signal of steam off pipeline, this sensor construction is simple, and enterprise's user cost is low; When having advantages of the emergency overspeed governor of pressing, the present invention can close steam turbine and generator simultaneously.
Claims (2)
1. a turbine emergency protector joins the method for controlling security of jumping generator; comprise by generator comprehensive protector and control the generator of opening or closing; the steam turbine being connected with generator coaxle; and the steam line being connected with steam turbine; on steam line, be provided with the main inlet throttle-stop valve fast valve that can open or close steam line; the emergency overspeed governor of control steam turbine is controlled main inlet throttle-stop valve fast valve by oil path control system and is opened or closed steam line, it is characterized in that: comprise the following steps:
(1) first on main inlet throttle-stop valve fast valve, arrange in order to detect the sensor of main inlet throttle-stop valve fast valve on off state, sensor is connected with generator comprehensive protector;
(2) when steam turbine breaks down, press emergency overspeed governor, emergency overspeed governor is controlled main inlet throttle-stop valve fast valve steam off pipeline by oil path control system, and after steam line is closed, steam turbine quits work;
(3) now the sensor on main inlet throttle-stop valve fast valve detects main inlet throttle-stop valve fast valve after steam off pipeline, can at once the main inlet throttle-stop valve fast valve signal of steam off pipeline be sent to generator comprehensive protector;
(4) generator comprehensive protector receives that main inlet throttle-stop valve fast valve after the signal of steam off pipeline, can send excitation connection to generator and jump signal, and generator is received after this excitation connection is jumped signal and quit work.
2. a kind of turbine emergency protector connection according to claim 1 is jumped the method for controlling security of generator, it is characterized in that: described sensor comprises: be installed on the block on main inlet throttle-stop valve fast valve valve rod, and being arranged on the main inlet throttle-stop valve quick closing valve limit switch on main inlet throttle-stop valve fast valve, main inlet throttle-stop valve quick closing valve limit switch is connected with generator comprehensive protector; When main inlet throttle-stop valve fast valve steam off pipeline, the block on main inlet throttle-stop valve fast valve valve rod is just in time touched main inlet throttle-stop valve quick closing valve limit switch, and main inlet throttle-stop valve quick closing valve limit switch is sent to generator comprehensive protector by the main inlet throttle-stop valve fast valve signal of steam off pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410353454.7A CN104121044B (en) | 2014-07-24 | 2014-07-24 | The method of controlling security of generator jumped by a kind of turbine emergency protector connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410353454.7A CN104121044B (en) | 2014-07-24 | 2014-07-24 | The method of controlling security of generator jumped by a kind of turbine emergency protector connection |
Publications (2)
| Publication Number | Publication Date |
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| CN104121044A true CN104121044A (en) | 2014-10-29 |
| CN104121044B CN104121044B (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410353454.7A Active CN104121044B (en) | 2014-07-24 | 2014-07-24 | The method of controlling security of generator jumped by a kind of turbine emergency protector connection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033506A (en) * | 2021-11-17 | 2022-02-11 | 中国电建集团江西省电力设计院有限公司 | FCB function unit emergency shutdown protection device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB325269A (en) * | 1928-11-15 | 1930-02-17 | Eric Maurice Johnson | Improvements in or relating to power systems |
| US2902831A (en) * | 1958-08-22 | 1959-09-08 | Gen Electric | Governing system for reheat steam turbine powerplant |
| GB1604711A (en) * | 1977-09-09 | 1981-12-16 | Gen Electric | System for protecting power distribution circuit against ground faults |
| CN2926521Y (en) * | 2006-07-03 | 2007-07-25 | 郑州荣奇热电能源有限公司 | Adjusting security system of steam turbine set |
| CN201197086Y (en) * | 2008-05-16 | 2009-02-18 | 鞍山钢铁集团公司第二发电厂 | Redundant power supply used for digital electro-hydraulic control system of turbine |
| CN103615322A (en) * | 2013-11-20 | 2014-03-05 | 内蒙古包钢钢联股份有限公司 | TRT (Top Gas Pressure Recovery Turbine) unit over-speed control system and TRT unit over-speed control method |
| CN103628933A (en) * | 2013-12-02 | 2014-03-12 | 成都成发科能动力工程有限公司 | Control method for realizing ETS (emergency trip system) function of small-sized steam turbine set |
-
2014
- 2014-07-24 CN CN201410353454.7A patent/CN104121044B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB325269A (en) * | 1928-11-15 | 1930-02-17 | Eric Maurice Johnson | Improvements in or relating to power systems |
| US2902831A (en) * | 1958-08-22 | 1959-09-08 | Gen Electric | Governing system for reheat steam turbine powerplant |
| GB1604711A (en) * | 1977-09-09 | 1981-12-16 | Gen Electric | System for protecting power distribution circuit against ground faults |
| CN2926521Y (en) * | 2006-07-03 | 2007-07-25 | 郑州荣奇热电能源有限公司 | Adjusting security system of steam turbine set |
| CN201197086Y (en) * | 2008-05-16 | 2009-02-18 | 鞍山钢铁集团公司第二发电厂 | Redundant power supply used for digital electro-hydraulic control system of turbine |
| CN103615322A (en) * | 2013-11-20 | 2014-03-05 | 内蒙古包钢钢联股份有限公司 | TRT (Top Gas Pressure Recovery Turbine) unit over-speed control system and TRT unit over-speed control method |
| CN103628933A (en) * | 2013-12-02 | 2014-03-12 | 成都成发科能动力工程有限公司 | Control method for realizing ETS (emergency trip system) function of small-sized steam turbine set |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033506A (en) * | 2021-11-17 | 2022-02-11 | 中国电建集团江西省电力设计院有限公司 | FCB function unit emergency shutdown protection device |
| CN114033506B (en) * | 2021-11-17 | 2023-09-12 | 中国电建集团江西省电力设计院有限公司 | Emergency stop protection device for FCB functional unit |
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| CN104121044B (en) | 2015-12-30 |
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Effective date of registration: 20190704 Address after: 215600 Yonglian Village, Nanfeng Town, Zhangjiagang City, Jiangsu Province Patentee after: Lian Feng Steel (Zhangjiagang) Co., Ltd. Address before: 215628 Yonglian Jiangsu Yonggang Group Co., Ltd., Nanfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: Jiangsu Yonggang Group Co., Ltd. |
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