CN211266495U - Control system for preventing blast furnace TRT generator grid-connected cabinet from stealing and jumping and quickly switching valve - Google Patents
Control system for preventing blast furnace TRT generator grid-connected cabinet from stealing and jumping and quickly switching valve Download PDFInfo
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- CN211266495U CN211266495U CN202020333684.8U CN202020333684U CN211266495U CN 211266495 U CN211266495 U CN 211266495U CN 202020333684 U CN202020333684 U CN 202020333684U CN 211266495 U CN211266495 U CN 211266495U
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Abstract
The utility model discloses a control system of prevention blast furnace TRT generator grid-connected cabinet steals and jumps fast switch valve and does not act relates to system protection technical field. The control system for preventing the blast furnace TRT generator grid-connected cabinet from stealing and tripping and fast switching valve from acting comprises a comprehensive protection fault module, an excitation cabinet fault module, a system fault module, an instrument control fault module, a grid-connected operation module, a grid-connected cabinet tripping module, a fast switching valve, blast furnace gas and a turbine. According to the control system for preventing the operation of the blast furnace TRT generator grid-connected cabinet stealing and tripping fast-switching valve, through improvement on the system, a grid-connected operation module and a grid-connected cabinet tripping module are added, and a fast-switching valve fast-switching protection program is added in a background program, namely, a grid-connected switch trips the fast-switching valve and simultaneously fast-switches to close the valve no matter whether the grid-connected switch is fault or not, and other reasons, so that the gas pressure of the turbine is reduced to zero, and the safety of the generator is protected.
Description
Technical Field
The utility model relates to a system protection technical field specifically is a control system that prevention blast furnace TRT generator grid-connected cabinet steals and jumps fast switch valve and does not act.
Background
The control protection system realizes the functions of equipment protection, system protection and other automatic control on the basis of a measurement system and an early warning system. The control protection system mainly has the functions of analyzing stability on line according to data, including transient power angle stability, small signal stability, frequency stability, transient and long-term voltage stability, low-frequency oscillation and subsynchronous oscillation, determining real-time power transmission capacity, analyzing successive fault risks and optimizing control decisions, so that accident shutdown is ensured, and misoperation caused by instrument faults can be avoided.
The traditional valve fast-switching protection comprises an integrated protection command for fast switching due to electrical faults, a command for fast switching due to excitation cabinet faults, a command for fast switching due to system normal disconnection, and a command for fast switching due to instrument control faults. These are fault trip machines, and the grid-connected cabinet switch can receive a trip instruction to trip, and the quick-cut valve acts simultaneously to close the valve, so as to close the gas pressure of the turbine. However, the switch of the grid-connected cabinet is stolen and jumped due to non-fault factors such as vibration, line interference, voltage fluctuation and the like, and the quick-cut valve does not act, so that the gas pressure of the turbine is still, and the generator is very easy to cause no-load overspeed or runaway accidents.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a to prior art not enough, the utility model provides a prevention blast furnace TRT generator is incorporated into power networks cabinet and is stolen control system who jumps to cut valve not action fast has solved blast furnace TRT and has incorporated into power networks cabinet switch and do not cut the valve not action fast because of non-fault factors tripping operation such as vibrations, line interference, and turbine machine gas pressure is still at this moment, very easily causes the problem of generator unloaded hypervelocity or driving accident.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a control system that prevention blast furnace TRT generator is incorporated into power networks cabinet and is stolen fast switch valve action, includes comprehensive protection fault module, excitation cabinet fault module, system fault module, instrument control fault module, operation module that is incorporated into power networks, is incorporated into power networks cabinet trip module, fast switch valve, blast furnace gas and turbine, it establishes ties to be incorporated into power networks operation module and the cabinet trip module that is incorporated into power networks, comprehensive protection fault module, excitation cabinet fault module, system fault module, instrument control fault module, the parallel back of being incorporated into power networks operation module and the cabinet trip module that is incorporated into power networks of establishing ties are connected with the shut command, the shut command is connected with the valve switch to switch on the power and make fast switch valve close after receiving the shut command.
Preferably, the blast furnace gas is re-introduced into the turbine through a fast-switching valve.
Preferably, the quick-cut valve is an electric butterfly valve.
Preferably, a quick-switching valve quick-switching protection program is added in the background program, namely, after grid connection, the grid connection switch trips the quick-switching valve regardless of the reasons of faults or non-faults and the like, and the valve is closed by quick-switching action at the same time, so that the gas pressure of the turbine is reduced to zero, and the safety of the generator is protected.
Preferably, the grid-connected operation module takes a grid-connected circuit breaker normally-closed point.
(III) advantageous effects
The utility model provides a control system for preventing blast furnace TRT generator grid-connected cabinet from stealing and jumping and quickly switching valve. The method has the following beneficial effects:
the control system for preventing the operation of the blast furnace TRT generator grid-connected cabinet from stealing the trip quick-switch valve is improved on the system, a grid-connected operation module and a grid-connected cabinet trip module are added, and a quick-switch valve quick-switch protection program is added in a background program, namely, after grid connection, a grid-connected switch trips the quick-switch valve regardless of the reasons of faults or non-faults and the like, and the quick-switch valve is also quickly switched to close the valve, so that the gas pressure of the turbine is reduced to zero, and the safety of the generator is protected.
Drawings
FIG. 1 is a schematic structural view of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a control system for preventing the fast switching valve from being operated by stealing trip of a grid-connected cabinet of a TRT generator of a blast furnace comprises a comprehensive protection fault module, an excitation cabinet fault module, a system fault module, an instrument control fault module, a grid-connected operation module, a grid-connected cabinet trip module, a fast switching valve, blast furnace gas and a turbine, wherein the grid-connected operation module is connected with the grid-connected cabinet trip module in series, the comprehensive protection fault module, the excitation cabinet fault module, the system fault module, the instrument control fault module, the grid-connected operation module and the grid-connected cabinet trip module which are connected in series are connected in parallel and then connected with a closing command, the closing command is connected with a valve switch, a power supply is switched on after the closing command is received to close the fast switching valve, the blast furnace gas enters the turbine through the fast switching valve, the fast switching valve is an electric butterfly valve, a fast switching valve fast switching protection program is added in a background program, namely the grid-connected switch after grid connection is a fast switching valve, the gas pressure of the turbine is reduced to zero, so that the safety of the generator is protected, and the grid-connected operation module takes a normal closing point of a grid-connected breaker.
When the integrated protection type grid-connected switch is in work, any one of the integrated protection fault module, the excitation cabinet fault module, the system fault module and the instrument control fault module can send a quick-switching valve closing instruction to the quick-switching valve switch, wherein a quick-switching valve quick-switching protection program is added in a background program, namely, the grid-connected switch trips the quick-switching valve regardless of the reasons of faults or non-faults and the like and also quickly switches to close the valve after grid connection, namely, only when the grid-connected operation module is in grid-connected state again, the action of the grid-connected cabinet tripping module can send a quick-switching valve closing instruction to close the quick-switching valve, and the phenomenon that the grid-connected cabinet switch is stolen and tripped due to non-fault factors such as vibration, line interference, voltage fluctuation and the like.
In summary, according to the control system for preventing the blast furnace TRT generator grid-connected cabinet from stealing the trip quick-switching valve, through improvement on the system, a grid-connected operation module and a grid-connected cabinet trip module are added, and a quick-switching valve quick-switching protection program is added in a background program, namely, a grid-connected switch after grid connection trips the quick-switching valve regardless of the reasons of faults or non-faults and the like and also quickly switches to close the valve, so that the gas pressure of the turbine is reduced to zero, and the safety of the generator is protected.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a control system that prevention blast furnace TRT generator is incorporated into power networks cabinet and is stolen fast switch valve action of jumping, includes comprehensive protection trouble module, excitation cabinet trouble module, system trouble module, instrument control trouble module, is incorporated into power networks operation module, is incorporated into power networks cabinet tripping operation module, cuts valve, blast furnace gas and turbine fast, its characterized in that: the system comprises a grid-connected operation module, a grid-connected cabinet tripping module, a comprehensive protection fault module, an excitation cabinet fault module, a system fault module, an instrument control fault module, a grid-connected operation module and a grid-connected cabinet tripping module, wherein the grid-connected operation module and the grid-connected cabinet tripping module are connected in series and then are connected in parallel with a closing instruction, the closing instruction is connected with a valve switch, and a power supply is switched on to close a quick-switching valve after the closing instruction is received.
2. The control system for preventing the blast furnace TRT generator grid-connected cabinet from stealing and jumping and quickly switching the valve to be inactive according to claim 1, characterized in that: and the blast furnace gas enters the turbine through the quick-cutting valve.
3. The control system for preventing the blast furnace TRT generator grid-connected cabinet from stealing and jumping and quickly switching the valve to be inactive according to claim 1, characterized in that: the quick-cutting valve is an electric butterfly valve.
4. The control system for preventing the blast furnace TRT generator grid-connected cabinet from stealing and jumping and quickly switching the valve to be inactive according to claim 1, characterized in that: a quick-switching valve quick-switching protection program is added in a background program, namely, a grid-connected switch trips a quick-switching valve regardless of the reasons of faults or non-faults and the like after grid connection, and the valve is closed by quick-switching action at the same time, so that the gas pressure of the turbine is reduced to zero, and the safety of a generator is protected.
5. The control system for preventing the blast furnace TRT generator grid-connected cabinet from stealing and jumping and quickly switching the valve to be inactive according to claim 1, characterized in that: and the grid-connected operation module takes a normally closed point of a grid-connected circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020333684.8U CN211266495U (en) | 2020-03-17 | 2020-03-17 | Control system for preventing blast furnace TRT generator grid-connected cabinet from stealing and jumping and quickly switching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020333684.8U CN211266495U (en) | 2020-03-17 | 2020-03-17 | Control system for preventing blast furnace TRT generator grid-connected cabinet from stealing and jumping and quickly switching valve |
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| Publication Number | Publication Date |
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| CN211266495U true CN211266495U (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020333684.8U Active CN211266495U (en) | 2020-03-17 | 2020-03-17 | Control system for preventing blast furnace TRT generator grid-connected cabinet from stealing and jumping and quickly switching valve |
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| CN (1) | CN211266495U (en) |
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2020
- 2020-03-17 CN CN202020333684.8U patent/CN211266495U/en active Active
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