CN109519234A - A kind of guard method preventing small turbine tripping - Google Patents
A kind of guard method preventing small turbine tripping Download PDFInfo
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- CN109519234A CN109519234A CN201811507271.0A CN201811507271A CN109519234A CN 109519234 A CN109519234 A CN 109519234A CN 201811507271 A CN201811507271 A CN 201811507271A CN 109519234 A CN109519234 A CN 109519234A
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- tripping
- signal
- functional block
- logic
- small turbine
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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
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
Abstract
The present invention provides a kind of guard method for preventing small turbine tripping; control logic including modifying DCS Control System Software; increase head first to go out to reset redundant signals, followed by increases first intelligent reminding alarm signal abnormal out, finally increase small machine Trip Logic and judge signal.The present invention is by improving control system logic, solve the problems, such as that the first functional block First functional block out of tripping is insecure, propose the protection system of protection and a kind of first anti-tripping being provided separately out, the thought of this design protection is applicable to various DCS control systems, improve the reliability of protection system, it reduces because head goes out functional block " crash ", logical design is not perfect, operations staff's operation is lack of standardization, thermal control maintenance personnel's logic forces a possibility that relay fail caused by lack of standardization wait, ensure energy automatic trigger relay protective scheme when small turbine system abnormal parameters, urgent interlocking equipment, breakdown loss is reduced to greatest extent, also to ensure that an operations staff distant place makes lock manually and once succeeds, dissolve live crisis in time.
Description
Technical field
The invention belongs to steam turbine protection technical fields, and in particular to a kind of guard method for preventing small turbine tripping.
Technical background
Protection system in heat power engineering is the indispensable important system of thermal power generation unit, the stabilization of protective system in heat power and reliably to machine
The reliability of the major-minor equipment of group and safety suffer from important function, and the function of protection system in heat power engineering is exactly the master in generating set
It additionally arranges for correct judgement when there are abnormal parameters, is made, and is taken in time by the control of automatic emergency interlocking equipment
Equipment is protected in measure, to reduce unit or equipment fault involves range, avoids the damage of major accident and equipment.
Since system logic design is not perfect in actual production, there are multinomial loopholes, and a lot of small turbines protections have occurred
The problem of tripping, lock failure is played in a distant place, such as 1: after small turbine hangs lock in the distance, hand-reset tripping head goes out logic not in time,
Cause the first functional block out of tripping that can not trigger trip signal again；2: for XDPS-400+ Xinhua DCS system, maintenance personnel is strong
After the first First functional block out of system tripping, functional block " crash " can not triggered as normal output trip signal；3:XDPS-400+ Xinhua
When the hardware faults on-bne repair such as DCS system fastener, to avoid equipment malfunction, all trigger signals are forced, but may
It causes input signal transformation to cause the first functional block out of tripping that can not trigger trip signal again, affects unit safety and stablize fortune
Row.
Summary of the invention
In order to solve the above-mentioned technical problem the present invention provides a kind of guard method for preventing small turbine tripping, it is ensured that small vapour
Energy automatic trigger relay protective scheme, urgent interlocking equipment reduce breakdown loss to greatest extent when expander system abnormal parameters, also true
Guarantor makes lock in an operations staff distant place manually and once succeeds, and dissolves live crisis in time.
The technical scheme is that a kind of guard method for preventing small turbine tripping, including modification DCS control system
The control logic of software retains original First functional block first, increases first reset redundant signals out, followed by increases first different out
Normal intelligent reminding alarm signal, finally increases small machine Trip Logic and judges signal.
Further, the first redundant signals that reset out of the increase are the rem ote reset extension lock signal retained in original system, are increased
Small turbine operating status is added to reset the logic judgment signal of the first functional block out of tripping.
Further, the logic judgment signal for increasing the first functional block out of small turbine operating status reset tripping is logical
It crosses introducing " pulse timer TIMER " functional block and " or OR " functional block increases reset signal.
Further, the first intelligent reminding alarm signal abnormal out of the increase is by " analog comparator CMP " function that induces one
The first signal condition out of energy block judgement, He little Ji have hung lock signal phase and the report of generation " small turbine head goes out to be logically present exception "
Alert prompt, prompt, which is meant that, goes out signal when tripping head occurs in operation in small machine, should contact thermal control maintenance personnel progress in time
Logic is checked to remind.
Further, it is described increase small machine Trip Logic judge signal be using " 8 input quantity or " functional block QOR8
Regenerate Trip Logic triggering trip signal.
The invention has the advantages that the present invention solves tripping head and goes out functional block First function by improving control system logic
The insecure problem of block proposes the small turbine protection system of protection and a kind of first anti-tripping being provided separately out, this guarantor
The thought of shield design can be adapted for various DCS control systems, and the reliability of protection system can be improved, and reduce to greatest extent
Because head goes out functional block " crash ", logical design is not perfect, and operations staff's operation is lack of standardization, and the pressure of thermal control maintenance personnel's logic is not advised
A possibility that relay fail caused by model etc., it is ensured that energy automatic trigger relay protective scheme when small turbine system abnormal parameters, promptly
Interlocking equipment reduces breakdown loss to greatest extent, also to ensure that an operations staff distant place makes lock manually and once succeeds, and neutralizing is existing in time
Field crisis.
Detailed description of the invention
Fig. 1 is the small machine tripping of the present invention first reset and alarming logic schematic diagram out；
Fig. 2 is that the present invention increases small machine Trip Logic schematic diagram newly；
Specific embodiment
Clear and complete description is done to the present invention with reference to the accompanying drawing, so that those skilled in the art is not needing to make
Under conditions of creative work, it can sufficiently implement the present invention.
A specific embodiment of the invention is: as shown in Figs. 1-2, a kind of guard method preventing small turbine tripping, packet
The control logic for including modification DCS Control System Software retains original First functional block first, increases first reset redundant signals out
1, followed by increase first intelligent reminding alarm signal 2 abnormal out, finally increases small machine Trip Logic and judge signal.
Further, the first redundant signals 1 that reset out of the increase are the rem ote reset extension lock signal retained in original system, are increased
Small turbine operating status is added to reset the logic judgment signal of the first functional block out of tripping.
Further, the logic judgment signal for increasing the first functional block out of small turbine operating status reset tripping is logical
It crosses introducing " pulse timer TIMER " functional block and " or OR " functional block increases reset signal.
Further, the first intelligent reminding alarm signal 2 abnormal out of the increase is by " analog comparator CMP " function that induces one
The first signal condition out of energy block judgement, He little Ji have hung lock signal phase and the report of generation " small turbine head goes out to be logically present exception "
Alert prompt, prompt, which is meant that, goes out signal when tripping head occurs in operation in small machine, should contact thermal control maintenance personnel progress in time
Logic is checked to remind.
Further, it is described increase small machine Trip Logic judge signal be using " 8 input quantity or " functional block QOR8
Trip Logic triggering trip signal is regenerated, such as the function of being realized in Fig. 2.
Presently preferred embodiments of the present invention is described above, it should be pointed out that the invention is not limited to above-mentioned
Particular implementation, devices and structures not described in detail herein should be understood as gives reality with the common mode in this field
It applies；Anyone skilled in the art, without departing from the scope of the technical proposal of the invention, technology according to the present invention
Essence any simple modifications, equivalents, and modifications made to the above embodiment still fall within technical solution of the present invention protection
In the range of.
Claims (5)
1. a kind of guard method for preventing small turbine tripping, which is characterized in that the control including modifying DCS Control System Software
Logic retains original First functional block first, increases head and goes out to reset redundant signals, followed by increases first intelligent reminding abnormal out
Alarm signal finally increases small machine Trip Logic and judges signal.
2. a kind of guard method for preventing small turbine tripping according to claim 1, which is characterized in that the increase is first
Resetting redundant signals out is that the rem ote reset retained in original system hangs lock signal, and it is first to increase the reset tripping of small turbine operating status
The logic judgment signal of functional block out.
3. a kind of guard method for preventing small turbine tripping according to claim 2, which is characterized in that the increase is small
The logic judgment signal of the first functional block out of steam turbine operation state reset tripping is by introducing " pulse timer TIMER " function
Block and " or OR " functional block increase reset signal.
4. a kind of guard method for preventing small turbine tripping according to claim 1, which is characterized in that the increase is first
Abnormal intelligent reminding alarm signal is by the first signal condition out of " analog comparator CMP " the functional block judgement that induces one, He little Ji out
It has hung lock signal phase and has generated the warning note of " small turbine head goes out to be logically present exception ", prompt to be meant that when small machine exists
The first signal out of emerged in operation tripping should contact thermal control maintenance personnel in time and carry out logic check to remind.
5. a kind of guard method for preventing small turbine tripping according to claim 1, which is characterized in that the increase is small
Machine Trip Logic judge signal be using " 8 input quantity or " functional block QOR8 regenerate Trip Logic triggering tripping letter
Number.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018110195930 | 2018-09-03 | ||
| CN201811019593 | 2018-09-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109519234A true CN109519234A (en) | 2019-03-26 |
| CN109519234B CN109519234B (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811507271.0A Active CN109519234B (en) | 2018-09-03 | 2018-12-11 | Protection method for preventing small steam turbine from refusing operation |
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| Country | Link |
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| CN (1) | CN109519234B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645744A (en) * | 2021-10-29 | 2022-06-21 | 福建省鸿山热电有限责任公司 | Protection optimization method for extraction condensing heat supply unit ETS |
| CN115167371A (en) * | 2022-08-04 | 2022-10-11 | 华能山东发电有限公司 | Reverse verification-based thermal protection fault diagnosis method and system and self-checking method |
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| WO2009031790A2 (en) * | 2007-09-03 | 2009-03-12 | Bnf Technologe Inc. | Method and system for tracing trip-cause in industrial plant |
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| CN104217548A (en) * | 2014-09-02 | 2014-12-17 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Method and device for processing first-out alarm of gas turbines |
| CN105332744A (en) * | 2015-11-23 | 2016-02-17 | 国家电网公司 | Checking method for preventing failure of thermal process protection system of thermal generator set |
| CN107546715A (en) * | 2017-08-10 | 2018-01-05 | 大唐陕西发电有限公司渭河热电厂 | A kind of centralized earth leakage protective device |
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2018
- 2018-12-11 CN CN201811507271.0A patent/CN109519234B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060042265A1 (en) * | 2004-08-30 | 2006-03-02 | Dmitry Drob | Turbine overspeed protection |
| CN101074614A (en) * | 2007-06-15 | 2007-11-21 | 沈阳化工学院 | Digital redundant emergent protecting system of steam turbine |
| WO2009031790A2 (en) * | 2007-09-03 | 2009-03-12 | Bnf Technologe Inc. | Method and system for tracing trip-cause in industrial plant |
| CN102720547A (en) * | 2012-06-27 | 2012-10-10 | 国核自仪系统工程有限公司 | Redundant emergency tripping system of steam turbine |
| CN104018895A (en) * | 2014-06-19 | 2014-09-03 | 南京科远自动化集团股份有限公司 | ETS protective unit and triply-redundant steam turbine emergency protection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645744A (en) * | 2021-10-29 | 2022-06-21 | 福建省鸿山热电有限责任公司 | Protection optimization method for extraction condensing heat supply unit ETS |
| CN115167371A (en) * | 2022-08-04 | 2022-10-11 | 华能山东发电有限公司 | Reverse verification-based thermal protection fault diagnosis method and system and self-checking method |
| CN115167371B (en) * | 2022-08-04 | 2023-04-18 | 华能山东发电有限公司 | Reverse verification-based thermal protection fault diagnosis method and system and self-checking method |
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| Publication number | Publication date |
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| CN109519234B (en) | 2023-07-25 |
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