CN110034541A - A kind of jump electric protection method of electromechanical linkage device - Google Patents
A kind of jump electric protection method of electromechanical linkage device Download PDFInfo
- Publication number
- CN110034541A CN110034541A CN201910332208.6A CN201910332208A CN110034541A CN 110034541 A CN110034541 A CN 110034541A CN 201910332208 A CN201910332208 A CN 201910332208A CN 110034541 A CN110034541 A CN 110034541A
- Authority
- CN
- China
- Prior art keywords
- ets
- signal
- protection
- steam turbine
- jump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
Abstract
The present invention provides a kind of jump electric protection methods of electromechanical linkage device, the main reason for design is that do not have the improvement of non-ionizing energy loss in some designs, because electic protection action signal only has 40-50ms, namely after Generator Outlet Switchgear tripping, relay protection will return, and ETS has anti-interference method to access signal, the signal of relay protection movement may be can't accept, main inlet throttle-stop valve cannot be closed in time, lead to Steam Turbine Over-speed Accident, start non-ionizing energy loss with MK normally closed contact, there can be a lasting signal to ETS to after relay protection movement, ensure that main inlet throttle-stop valve can be closed reliably, what non-ionizing energy loss issued is lasting long signal, it can ensure that ETS protection act, ensure that ETS can receive the signal of electic protection movement, reducing steam turbine as far as possible, there is a situation where exceed the speed limit, without influencing to generate electricity The tripping principle of other protections of machine.
Description
Technical field
The present invention relates to optimum control for generation field more particularly to a kind of jump electric protection methods of electromechanical linkage device.
Background technique
Country's Turbo-generator Set is all made of the mode of electromechanical linkage tripping at present, to guarantee the peace of generating set operation
Entirely, after steam turbine main inlet throttle-stop valve is closed, shunt tripping Generator Outlet Switchgear, or jump generator outlet by program reverse-power protection and open
Pass and degaussing switch, this realizes that this function is easier in protection equipment for generator, and generator protection jumps steam turbine, is hair
Electric motor protecting exports the ETS protection of deactivation steam turbine, is gone to close main inlet throttle-stop valve by ETS protection act, the thermal louvers of electic protection are anti-
Interference performance is poor, and the node shake i.e. measure of interference signal that prevents can often be arranged in program, a shorter delay is arranged,
After electic protection movement, tripping Generator Outlet Switchgear while, gives ETS trip signal, trips and completes to Generator Outlet Switchgear
Afterwards, protection signal returns, and protection act duration only has 50ms or so, and often ETS can not receive signal, electrical to protect
Shield is returned to, and is failure to actuate so as to cause steam turbine protection, is caused Steam Turbine Over-speed Accident, encountered really in actual operation in this way
The problem of, when designing institute's design drawing, does not have to design a circuit that degaussing switch is even jumped, without non-electrical in generator relay protection yet
Amount protection, the signal of relay protection movement may be can not receive by not accounting for ETS, and cause Steam Turbine Over-speed Accident.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of jumps of the electromechanical linkage device of power plant under the conditions of isolated network
Electric protection method.
In order to solve the above technical problems, the technical scheme adopted by the invention is that: a kind of jump electricity guarantor of electromechanical linkage device
Maintaining method, specifically includes the following steps:
S1, alternator failure, generator do relay protection movement；
S2, ETS electromechanical protection device jump Generator Outlet Switchgear, degaussing switch, close steam turbine main inlet throttle-stop valve；
S3, eliminating magnetism of generator switch interior MK normally closed contact and start non-ionizing energy loss, give ETS after the relay protection movement of step S1
One persistent signal of electromechanical protection device；
S4, ETS jump engine export switch, close steam turbine main inlet throttle-stop valve；
S5, failure is overhauled, machine is restarted after the completion of maintenance.
Preferably, MK normally closed contact is to one lasting signal of ETS device after relay protection movement.
The main reason for present invention designs is that do not have the improvement of non-ionizing energy loss in some designs, because electic protection acts
After signal only has 40-50ms, that is, Generator Outlet Switchgear tripping, relay protection will be returned, and ETS has access signal
Anti-interference method may can't accept the signal of relay protection movement, cannot close main inlet throttle-stop valve in time, lead to Steam Turbine Over-speed Accident,
Start non-ionizing energy loss with MK normally closed contact, has a lasting signal to ETS after acting to relay protection, it is ensured that main inlet throttle-stop valve
It can reliably close, what non-ionizing energy loss issued is lasting long signal, can ensure that ETS protection act, it is ensured that ETS can receive electricity
The signal of gas shielded movement, jump of the reduction steam turbine as far as possible there is a situation where exceeding the speed limit, without influencing other protections of generator
Lock principle.
Detailed description of the invention
Fig. 1 is step schematic diagram of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, unless otherwise specified and limited, it should be noted that term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, the connection being also possible to inside two elements can
It, can also be indirectly connected through an intermediary to be to be connected directly.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term.
A kind of jump electric protection method of electromechanical linkage device according to an embodiment of the present invention is described referring to Fig. 1, specifically
The following steps are included:
S1, alternator failure, generator do relay protection movement；
S2, ETS electromechanical protection device jump Generator Outlet Switchgear, degaussing switch, close steam turbine main inlet throttle-stop valve；
S3, eliminating magnetism of generator switch interior MK normally closed contact and start non-ionizing energy loss, give ETS after the relay protection movement of step S1
One persistent signal of electromechanical protection device；
S4, ETS jump engine export switch, close steam turbine main inlet throttle-stop valve；
S5, failure is overhauled, machine is restarted after the completion of maintenance.
Preferably, MK normally closed contact is to one lasting signal of ETS device after relay protection movement.
The main reason for present invention designs is that do not have the improvement of non-ionizing energy loss in some designs, because electic protection acts
After signal only has 40-50ms, that is, Generator Outlet Switchgear tripping, relay protection will be returned, and ETS has access signal
Anti-interference method may can't accept the signal of relay protection movement, cannot close main inlet throttle-stop valve in time, lead to Steam Turbine Over-speed Accident,
Start non-ionizing energy loss with MK normally closed contact, has a lasting signal to ETS after acting to relay protection, it is ensured that main inlet throttle-stop valve
It can reliably close, what non-ionizing energy loss issued is lasting long signal, can ensure that ETS protection act, it is ensured that ETS can receive electricity
The signal of gas shielded movement, jump of the reduction steam turbine as far as possible there is a situation where exceeding the speed limit, without influencing other protections of generator
Lock principle.
In the description of this specification, the description meaning of reference term " one embodiment ", " example " or " some examples " etc.
Refer to that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention
It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or show
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples
It can be combined in any suitable manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (2)
1. a kind of jump electric protection method of electromechanical linkage device, it is characterised in that: specifically includes the following steps:
S1, alternator failure, generator do relay protection movement；
S2, ETS electromechanical protection device jump Generator Outlet Switchgear, degaussing switch, close steam turbine main inlet throttle-stop valve；
S3, eliminating magnetism of generator switch interior MK normally closed contact and start non-ionizing energy loss, give ETS after the relay protection movement of step S1
One persistent signal of electromechanical protection device；
S4, ETS jump engine export switch, close steam turbine main inlet throttle-stop valve；
S5, failure is overhauled, machine is restarted after the completion of maintenance.
2. jump electric protection method according to claim 1, which is characterized in that after MK normally closed contact is acted to relay protection
One lasting signal of ETS device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910332208.6A CN110034541B (en) | 2019-04-24 | 2019-04-24 | Electricity-jumping protection method of electromechanical interlocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910332208.6A CN110034541B (en) | 2019-04-24 | 2019-04-24 | Electricity-jumping protection method of electromechanical interlocking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110034541A true CN110034541A (en) | 2019-07-19 |
| CN110034541B CN110034541B (en) | 2021-10-01 |
Family
ID=67240032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910332208.6A Active CN110034541B (en) | 2019-04-24 | 2019-04-24 | Electricity-jumping protection method of electromechanical interlocking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110034541B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113067367A (en) * | 2020-12-21 | 2021-07-02 | 华能国际电力股份有限公司上海石洞口第一电厂 | Method, system, device and medium for protecting reverse power of steam turbine combined tripping generator |
| 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 (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353216A (en) * | 1980-09-29 | 1982-10-12 | General Electric Company | Forward-reverse flow control system for a bypass steam turbine |
| CN101074614A (en) * | 2007-06-15 | 2007-11-21 | 沈阳化工学院 | Digital redundant emergent protecting system of steam turbine |
| JP2008102067A (en) * | 2006-10-20 | 2008-05-01 | Matsushita Electric Ind Co Ltd | Gas-blast circuit breaker |
| CN202900331U (en) * | 2012-10-11 | 2013-04-24 | 沈翀 | Tripping protection system of steam turbine in emergency situations |
| CN207184041U (en) * | 2017-07-17 | 2018-04-03 | 温州电力设计有限公司 | A kind of trip protection device |
| CN208571580U (en) * | 2018-08-10 | 2019-03-01 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of circuit of dual generator-transformer protection shunt tripping protective system in heat power |
-
2019
- 2019-04-24 CN CN201910332208.6A patent/CN110034541B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353216A (en) * | 1980-09-29 | 1982-10-12 | General Electric Company | Forward-reverse flow control system for a bypass steam turbine |
| JP2008102067A (en) * | 2006-10-20 | 2008-05-01 | Matsushita Electric Ind Co Ltd | Gas-blast circuit breaker |
| CN101074614A (en) * | 2007-06-15 | 2007-11-21 | 沈阳化工学院 | Digital redundant emergent protecting system of steam turbine |
| CN202900331U (en) * | 2012-10-11 | 2013-04-24 | 沈翀 | Tripping protection system of steam turbine in emergency situations |
| CN207184041U (en) * | 2017-07-17 | 2018-04-03 | 温州电力设计有限公司 | A kind of trip protection device |
| CN208571580U (en) * | 2018-08-10 | 2019-03-01 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of circuit of dual generator-transformer protection shunt tripping protective system in heat power |
Non-Patent Citations (2)
| Title |
|---|
| 余立塍: "300MW机组汽轮机保护逻辑优化与改进", 《电力建设》 * |
| 林文孚: "《单元机组电气运行》", 31 March 2007, 中国水利水电出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113067367A (en) * | 2020-12-21 | 2021-07-02 | 华能国际电力股份有限公司上海石洞口第一电厂 | Method, system, device and medium for protecting reverse power of steam turbine combined tripping generator |
| CN113067367B (en) * | 2020-12-21 | 2023-08-11 | 华能国际电力股份有限公司上海石洞口第一电厂 | Reverse power protection method, system, device and medium for turbine combined skip generator |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110034541B (en) | 2021-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2194656B1 (en) | Electrical power network management system | |
| CN101936258B (en) | A wind power plant predictive protection circuit | |
| CN104995812B (en) | The method for operating wind turbine plants | |
| JP4546486B2 (en) | Power network | |
| CN101562333B (en) | Fast current protection method for distribution network containing distributed power | |
| CN110034541A (en) | A kind of jump electric protection method of electromechanical linkage device | |
| Joyce et al. | The impact of high-speed reclosure of single and multi-phase systems faults on turbine-generator shaft torsional fatigue | |
| CN110821579B (en) | Steam turbine-generator safety protection system and method applied to large power plant | |
| CN101431229B (en) | Asynchronous switch-on protection method for generator set | |
| CN107171288B (en) | A kind of fired power generating unit zero energy protection system and method | |
| Xue et al. | Review of the breaker failure protection practices in utilities | |
| CN103615322B (en) | TRT unit overspeed control system and hypervelocity controlling method thereof | |
| Clark et al. | Industrial and cogeneration protection problems requiring simulation | |
| Nguyen-Duc et al. | Simulation of a power grid blackout event in Vietnam | |
| Pourbeik et al. | Vulnerability of large steam turbine generators to torsional interactions during electrical grid disturbances | |
| Assenkamp et al. | Capability of synchronous machines to ride through events with high ROCOF | |
| Tsai | A new single-pole switching technique for suppressing turbine-generator torsional vibrations and enhancing power stability and continuity | |
| Zare et al. | Mitigation of power system blackout by blocking zone3 of minimum distance relays | |
| CN209217696U (en) | The protective device of TRT incoming breaker trip protection shunt tripping TRT generating set | |
| Damron | Practical considerations and experiences protecting 230 kV shunt air-core reactors banks | |
| de Oliveira et al. | Short-Term Distortion and Protection Operation in DFIG-Based Wind Parks during Voltage Dips | |
| Lin et al. | Suppress vibrations on turbine blades by high-temperature super-conductive fault current limiter | |
| Keyvani et al. | Investigation on transient stability of an industrial network and relevant impact on over-current protection performance | |
| Brunet-Watson et al. | Review of series compensation for transmission lines | |
| Kawady | An interactive simulation of grid-connected DFIG units for protective relaying studies |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |