CN101074614A - Digital redundant emergent protecting system of steam turbine - Google Patents
Digital redundant emergent protecting system of steam turbine Download PDFInfo
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- CN101074614A CN101074614A CN 200710011731 CN200710011731A CN101074614A CN 101074614 A CN101074614 A CN 101074614A CN 200710011731 CN200710011731 CN 200710011731 CN 200710011731 A CN200710011731 A CN 200710011731A CN 101074614 A CN101074614 A CN 101074614A
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Abstract
The invention relates to an auto controlled protecting system, especially relates to a digital steam engineer ETS with which can test on line two-machine redundant technology. It includes the two-machine redundant ETS tripping control system, the electrical source system, the online test system. It sets with two of electrical source, the CPU units and I/O channels to assemble the steam machine tripping signal and then outputs the signal to the tripping solenoid valve which unloads the protecting oil of system, so the main steam door and sucking stop door are closed; the online test system switches the driving loop into the test low voltage. When one PLC is failure, it can be changed or repaired but not influence the system work which can use the two electrical sources. It can detect if the software and hardware of system work normally.
Description
Technical field
The present invention relates to a kind of automatic protection system, the digital steam emergency protective system (ETS) that particularly a kind of dual-computer redundancy technology that possesses online test function is main contents.
Background technique
Thermal power plant's Turbo-generator Set emergency protection control system (ETS) is the high system of reliability requirement rank in the process control system of power station; its function is the Operational Limits and the state of continuous monitoring steam turbine; and carry out logical operation and judgement, make equipment finish operations necessary to guarantee the safety of steam turbine according to set reasonable program.For this reason the inventor once on " Control Engineering " the 2nd phase magazine to the setting forth of aspect argumentations such as correlation technique principle, test result, but only be confined to make under the experimental condition, and online test method and hardware circuit design do not provided specify.
Traditional relay protection system exists action to postpone, and action connection point easily produces the oxidation adhesion; When having an accident, be difficult to judge concrete loop, prolonged the time of failure judgement; Can't monitor in real time with data and share, the protection kind is single, can not change other protective function into.Though many systems at present both domestic and external adopt the protective system of digital circuit to replace the relay system protective system; effectively overcome the above-mentioned shortcoming of traditional protection system; but do not possess inline diagnosis and on-line maintenance function; can not in time find the potential faults that system is potential, not reach the requirement of system's high reliability.The more important thing is that it is difficult to realize that redundant, heat is equipped with design.Any link on the traditional steam turbine set security system goes wrong, and causes huge hidden danger and loss all may for the safety of whole unit.
Summary of the invention
The objective of the invention is for shutting down action with the protection of steam turbine unit under hazardous condition or discrete control system (DCS) fault state is the turbine emergency trip protection system of purpose, and native system possesses perfect inline diagnosis test function.The control station of system is taked the structure of dual-computer redundancy, and two PLC (CPU, power supply and I/O module) are simultaneously in running order, finish the protection control logic side by side, strengthened the Security of system greatly; Utilize the powerful logical function of software, set up perfect software/hardware inline diagnosis, online test method, effectively eliminate the potential faults of system, thereby improve the reliability of system.
The present invention is achieved by the following technical solutions:
Digital redundant emergent protecting system of steam turbine comprises dual-computer redundancy emergency protection tripping operation control system, power-supply system, the online experiment system, the dual-computer redundancy structure of its system, promptly the configuration at power supply, CPU element and I/O passage all is two covers, its PS is a power module, and CP is a communication module; The signal of steam turbine tripping operation is gathered, export trip signal then to tripping electromagnetic valve, tripping electromagnetic valve is laid down security personnel's oil of security system, and the main inlet throttle-stop valve of steam turbine and the non-return flap of bleeding are closed; The online experiment system finishes by switching to the test grade low voltage in that driving loop, road of thread test.
Aforesaid digital redundant emergent protecting system of steam turbine, the test loop electric current of its system should be less than driving action current of solenoid valve.
Advantage of the present invention and effect are:
1. dual-computer redundancy emergency protection tripping operation control system (ETS) has added redundant design philosophy.All input, the output signals of system are the Twin channel design, and major control element (PLC) adopts the two-shipper simultaneous mode of working, when a PLC breaks down, can change and keep in repair under the prerequisite of not influence system operation.
2. dual-computer redundancy emergency protection tripping operation control system (ETS) power-supply system adopts double-power source to work simultaneously, and standby each other, when keeping in repair and changing one road power supply, other one road power supply can satisfy the power demands of whole system.
3. Du Te online experiment function, under the prerequisite that does not influence the normal operation of system, but whether the state of the software/hardware link of check system is normal and whether driving arrangement such as peripheral solenoid valve can regular event.
Description of drawings
Fig. 1 dual-computer redundancy emergency protective system allocation plan;
The online process of the test figure of Fig. 2 system.
Embodiment
At the important parameter of steam turbine during out-of-limit or status fault; promptly prevent hypervelocity, draw gas and prevent the protection project of adverse current and customer requirements in emergency shutdown, removal of load; automatically finish the function of steam turbine tripping operation; and can pass through the online experiment function; whether check system and equipment is normal; the signal that the control tripping operation is the steam turbine tripping operation gathers; export trip signal then to tripping electromagnetic valve; tripping electromagnetic valve is laid down security personnel's oil of security system; the main inlet throttle-stop valve of steam turbine and the non-return flap of bleeding are closed rapidly, finish the steam turbine tripping operation.Be meant Turbo-generator Set under normal operation conditions at thread test, the ETS system online actual act that trips.Finish " hang-up " by switching to the test grade low voltage, both can realize protecting control system physical device action (to the terminal electromagnetic valve coil), can avoid unit terminal machinery mechanism action to cause actual shutdown again in that driving loop, road of thread test.
Hardware system: power supply, CPU element and I/O passage are all taked redundant configuration.It is simultaneously in running order to be equivalent to two PLC, finishes the protection control logic side by side, so do not need online switching, does not also have the switching perturbed problem, as long as the clock of two control stations of configuration synchronously.
Software systems: utilize programming tool to programme, finish the logical function of the protection action of whole ETS system, this systemic-function is powerful, it is flexible, easy to maintenance to use.
Online experiment: steam turbine emergency protective system, its digitizing are to replace traditional relay control system with advanced PLC system.Its online experiment is meant whether the driving arrangements such as solenoid valve of the hang-up channel check system that utilizes software function and periphery can regular events.The loop switches to test grade low voltage loop by need be driven on that road of thread test; finish " hang-up "; carry out concrete test operation then; judge by the output of stimulus whether relevant device moves; both can realize protecting control system physical device action (to the terminal electromagnetic valve coil), and can avoid unit terminal machinery mechanism action to cause actual shutdown again.Then, peripheral loop is tested, the test loop electric current should be less than driving action current of solenoid valve, in order to avoid the solenoid valve action causes the jumping machine.If the electric current that obtains in normal range (NR), then tests successfully; Otherwise test failure, illustrating that solenoid valve exists opens circuit or other faults, should in time handle.By improved the reliable in action of system's solenoid valve at thread test, guarantee steam turbine 100% action in case of emergency.In the process of test, the protective function of system still exists.Protective function is not lost in the process of the test.Allow manually to beat lock.
Claims (2)
1. digital redundant emergent protecting system of steam turbine, comprise dual-computer redundancy emergency protection tripping operation control system, power-supply system, the online experiment system, the dual-computer redundancy structure that it is characterized in that system, promptly the configuration at power supply, CPU element and I/O passage all is two covers, and its PS is a power module, and CP is a communication module; The signal of steam turbine tripping operation is gathered, export trip signal then to tripping electromagnetic valve, tripping electromagnetic valve is laid down security personnel's oil of security system, and the main inlet throttle-stop valve of steam turbine and the non-return flap of bleeding are closed; The online experiment system finishes by switching to the test grade low voltage in that driving loop, road of thread test.
2. digital redundant emergent protecting system of steam turbine as claimed in claim 1 is characterized in that the test loop electric current of system should be less than driving action current of solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710011731 CN101074614A (en) | 2007-06-15 | 2007-06-15 | Digital redundant emergent protecting system of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710011731 CN101074614A (en) | 2007-06-15 | 2007-06-15 | Digital redundant emergent protecting system of steam turbine |
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| CN101074614A true CN101074614A (en) | 2007-11-21 |
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| CN 200710011731 Pending CN101074614A (en) | 2007-06-15 | 2007-06-15 | Digital redundant emergent protecting system of steam turbine |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807814A (en) * | 2010-03-23 | 2010-08-18 | 武汉若比特机器人有限公司 | Redundant backup circuit system architecture method with high security |
| CN101846998A (en) * | 2010-04-13 | 2010-09-29 | 德阳瑞能电力科技有限公司 | Redundant digital electric-hydraulic control system for turbine |
| CN101476987B (en) * | 2009-01-19 | 2011-04-20 | 沈阳化工学院 | Fault diagnosis method for turbine emergency protection device |
| CN101737100B (en) * | 2009-12-28 | 2012-06-06 | 国电南京自动化股份有限公司 | Turbine emergency protective system capable of preventing misoperation |
| CN102904328A (en) * | 2012-11-01 | 2013-01-30 | 中国科学院半导体研究所 | Laser redundant backup power supply |
| CN103742207A (en) * | 2014-01-24 | 2014-04-23 | 中国船舶重工集团公司第七�三研究所 | Controller of marine main steam turbine gear unit |
| CN103628933B (en) * | 2013-12-02 | 2015-12-02 | 成都成发科能动力工程有限公司 | Realize the controlling method of Miniature steamer unit emergency protective system function |
| US10018072B2 (en) | 2016-05-26 | 2018-07-10 | General Electric Company | Dual trip manifold assembly for turbine systems |
| RU185503U1 (en) * | 2018-08-10 | 2018-12-06 | Акционерное общество "Научно-производственный комплекс "ЭЛАРА" имени Г.А. Ильенко" (АО "ЭЛАРА") | INDUSTRIAL CONTROLLER |
| CN109404066A (en) * | 2018-12-05 | 2019-03-01 | 华能国际电力股份有限公司大连电厂 | A kind of novel steam generating set monitoring and protection TSI system and its innovation optimization method |
| CN109519234A (en) * | 2018-09-03 | 2019-03-26 | 大唐陕西发电有限公司 | A kind of guard method preventing small turbine tripping |
| CN110034541A (en) * | 2019-04-24 | 2019-07-19 | 南京泰润电力工程有限公司 | A kind of jump electric protection method of electromechanical linkage device |
| CN112554973A (en) * | 2020-11-19 | 2021-03-26 | 岭东核电有限公司 | Logical control method for steam extraction check valve of GSS (gas insulated switchgear) system of nuclear power station |
-
2007
- 2007-06-15 CN CN 200710011731 patent/CN101074614A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476987B (en) * | 2009-01-19 | 2011-04-20 | 沈阳化工学院 | Fault diagnosis method for turbine emergency protection device |
| CN101737100B (en) * | 2009-12-28 | 2012-06-06 | 国电南京自动化股份有限公司 | Turbine emergency protective system capable of preventing misoperation |
| CN101807814A (en) * | 2010-03-23 | 2010-08-18 | 武汉若比特机器人有限公司 | Redundant backup circuit system architecture method with high security |
| CN101846998A (en) * | 2010-04-13 | 2010-09-29 | 德阳瑞能电力科技有限公司 | Redundant digital electric-hydraulic control system for turbine |
| CN101846998B (en) * | 2010-04-13 | 2011-12-28 | 德阳瑞能电力科技有限公司 | Redundant digital electric-hydraulic control system for turbine |
| CN102904328A (en) * | 2012-11-01 | 2013-01-30 | 中国科学院半导体研究所 | Laser redundant backup power supply |
| CN103628933B (en) * | 2013-12-02 | 2015-12-02 | 成都成发科能动力工程有限公司 | Realize the controlling method of Miniature steamer unit emergency protective system function |
| CN103742207A (en) * | 2014-01-24 | 2014-04-23 | 中国船舶重工集团公司第七�三研究所 | Controller of marine main steam turbine gear unit |
| US10018072B2 (en) | 2016-05-26 | 2018-07-10 | General Electric Company | Dual trip manifold assembly for turbine systems |
| US10989064B2 (en) | 2016-05-26 | 2021-04-27 | General Electric Company | Dual trip manifold assembly for turbine systems |
| RU185503U1 (en) * | 2018-08-10 | 2018-12-06 | Акционерное общество "Научно-производственный комплекс "ЭЛАРА" имени Г.А. Ильенко" (АО "ЭЛАРА") | INDUSTRIAL CONTROLLER |
| CN109519234A (en) * | 2018-09-03 | 2019-03-26 | 大唐陕西发电有限公司 | A kind of guard method preventing small turbine tripping |
| CN109404066A (en) * | 2018-12-05 | 2019-03-01 | 华能国际电力股份有限公司大连电厂 | A kind of novel steam generating set monitoring and protection TSI system and its innovation optimization method |
| CN109404066B (en) * | 2018-12-05 | 2021-12-17 | 华能国际电力股份有限公司大连电厂 | Monitoring and protecting TSI (transient service interface) system of steam turbine generator unit and innovation optimization method thereof |
| CN110034541A (en) * | 2019-04-24 | 2019-07-19 | 南京泰润电力工程有限公司 | A kind of jump electric protection method of electromechanical linkage device |
| CN110034541B (en) * | 2019-04-24 | 2021-10-01 | 南京泰润电力工程有限公司 | Electricity-jumping protection method of electromechanical interlocking device |
| CN112554973A (en) * | 2020-11-19 | 2021-03-26 | 岭东核电有限公司 | Logical control method for steam extraction check valve of GSS (gas insulated switchgear) system of nuclear power station |
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