CN211880085U - Protection system for generator vibration alarm - Google Patents
Protection system for generator vibration alarm Download PDFInfo
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- CN211880085U CN211880085U CN202020474314.6U CN202020474314U CN211880085U CN 211880085 U CN211880085 U CN 211880085U CN 202020474314 U CN202020474314 U CN 202020474314U CN 211880085 U CN211880085 U CN 211880085U
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- generator
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Abstract
The utility model discloses a protection system of generator vibration warning, generator work circuit include steam turbine QM, generator QF, PT cabinet, generator import switch 06. The vibration signal acquisition module comprises a displacement sensor. The command processing module comprises a controller and Siemens S7-1200, and the alarm module comprises an audible and visual alarm. The generator inlet switch 06 and the turbine QM are the control objects of S7-1200. The utility model discloses a more accurate collection has been adopted to the vibration signal of generator, utilizes high accuracy displacement sensor to gather analog signal and convert the signal of telecommunication into, feeds back to the controller, and the controller adopts giga net communication, high-speed response siemens series' S S7-1200plc, reaches the dead steam turbine of quick response lock, generator import switch 06, forms effectual closed-loop control, can in time avoid the emergence of accident more, and the reliability is high, guarantees production efficiency.
Description
Technical Field
The utility model relates to an electrical control technical field especially relates to a protection system that generator vibration was reported to police.
Background
The generator is a necessary device for converting mechanical energy into electric energy, and is widely used in various large power generation plants and heat source plants. In the power generation systems of various large heat source plants, a generator is a core component, and the vibration amplitude of the generator seriously influences the normal work of the generator and the stability of a power grid.
The vibration of the turbonator is extremely harmful, and if the vibration reaches a certain amplitude, the power supply quality of a power generation system can be seriously threatened, and the power stability of the whole local network is influenced.
Most of the existing heat source plants and power systems adopt the traditional relay and the S7-300/485 controller for closed-loop control, the 485 communication rate is slow, the optimal protection time is easily missed, and the accident is expanded.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a protection system that generator vibration was reported to police in order to compensate prior art's defect exactly. The utility model discloses a giga net communication, controller adopt siemens S7-1200, and high-speed data transmission in time discovers the generator vibration unusual, gathers vibration signal and transmits for the controller, and the controller is handled fast and is sent out the instruction and cut off generator circuit rapidly, protection system safety.
The utility model discloses a realize through following technical scheme:
a protection system for generator vibration alarm comprises:
a generator operating circuit;
the vibration signal acquisition module is used for acquiring a vibration signal of a working circuit of the generator;
and the signal input end of the command processing and control module is connected with the output end of the vibration signal acquisition module, and the control output end of the command processing and control module is connected with the control end of the working circuit of the generator.
The generator working circuit comprises a steam turbine, a generator, a PT cabinet and a generator inlet switch which are sequentially connected, the steam turbine is physically connected with the generator, and the generator, the PT cabinet and the generator inlet switch are electrically connected.
The vibration signal acquisition module is a displacement sensor which acquires vibration signals of the generator body.
The displacement sensor adopts a high-precision analog quantity displacement sensor SKP3-2, the precision is 0.1%, the collected physical signals and analog quantity signals are converted into switching value electric signals, and the electric signals are transmitted to the controller through a carrier gigabit network.
The command processing and controlling module adopts a Siemens S7-1200 controller, the signal input end of the controller is connected with the output end of the displacement sensor, and the control output end of the controller is respectively connected with the control end of the steam turbine and the control end of the generator inlet switch. The controller accepts the analog quantity signal that displacement sensor gathered, and the controller is inside to carry out logic processing, judges whether to send action signal, sends corresponding instruction, and the instruction is given turbine and generator import switch through the giga net.
And the controller is connected with the displacement sensor, the steam turbine and the generator inlet switch by adopting kilomega network cables.
The alarm device also comprises an alarm module, wherein the control end of the alarm module is connected with the control output end of the command processing and control module.
The alarm module is an audible and visual alarm.
The utility model has the advantages that: the utility model discloses a more accurate collection has been adopted to the vibration signal of generator, utilizes high accuracy displacement sensor to gather analog signal and convert the signal of telecommunication to, feeds back to the controller, and the controller adopts giga net communication, high-speed response siemens series' S S7-1200plc, reaches the dead steam turbine of quick response lock, generator import switch 06, forms effectual closed-loop control. The S7-300/485 communication speed is slow, misjudgment is easy, efficiency is low, accidents can be avoided in time, reliability is high, and production efficiency is guaranteed.
Drawings
Fig. 1 is a schematic diagram of the circuit structure of the present invention.
Detailed Description
As shown in fig. 1, a protection system for generator vibration alarm includes:
a generator operating circuit; the generator working circuit comprises a steam turbine 1, a generator 2, a PT cabinet 3 and a generator inlet switch 4 which are sequentially connected, the steam turbine 1 is physically connected with the generator 2, and the generator 2, the PT cabinet 3 and the generator inlet switch 4 are electrically connected.
The vibration signal acquisition module is used for acquiring a vibration signal of a working circuit of the generator; the vibration signal acquisition module is a displacement sensor 5, and the displacement sensor 5 acquires vibration signals of the body of the generator 2. The displacement sensor 5 adopts a high-precision analog quantity displacement sensor SKP3-2, the precision is 0.1%, the collected physical signals and analog quantity signals are converted into switching quantity electric signals, and the electric signals are transmitted to the controller 6 through a carrier gigabit network.
And the signal input end of the command processing and control module is connected with the output end of the vibration signal acquisition module, and the control output end of the command processing and control module is connected with the control end of the working circuit of the generator. The command processing and controlling module adopts a Siemens S7-1200 controller 6, the signal input end of the controller 6 is connected with the output end of the displacement sensor 5, and the control output end of the controller 6 is respectively connected with the control end of the steam turbine 1 and the control end of the generator inlet switch 4. The controller 6 receives the analog quantity signal that displacement sensor 5 gathered, and controller 6 is inside to carry out logic processing, judges whether to send action signal, sends corresponding instruction, and the instruction is given for steam turbine and generator import switch through the gigabit net.
And the controller 6 is connected with the displacement sensor 5, the steam turbine 1 and the generator inlet switch 4 by adopting a gigabit network cable 7.
The alarm device also comprises an alarm module, wherein the control end of the alarm module is connected with the control output end of the command processing and control module. The alarm module is an audible and visual alarm 8.
The utility model discloses in the concrete implementation, when the power generation system circuit of power plant normally worked, generator 2's fuselage had certain normal weak vibration, but the vibration range is too big has serious potential safety hazard. The displacement sensor 5 collects the physical signal of the vibration of the generator body, converts the physical signal into an electric signal, the electric signal is transmitted to the controllers S7-1200 through the gigabit network, the controller 6 enters logic processing judgment and sends an execution command to act on a controlled object through the gigabit network.
The utility model discloses in the implementation, when controller 6 gives controlled object signals, also can give audible-visual annunciator signals, carry out certain action feedback.
The utility model discloses in the implementation, 6 inside 2 fuselage vibration alarm values of generator and trip value that will set up in advance of controller. The normal alarm value is 120mm, and the trip value is 150 mm. The vibration value collected by the displacement sensor 5 is lower than 120mm, the interior of the controller is regarded as normal, and no execution command is sent. When the vibration value collected by the displacement sensor 5 exceeds 120mm, the controller 6 sends an instruction to the audible and visual alarm 8 to send an alarm signal. The displacement sensor 5 collects vibration signals exceeding 150mm, the controller 6 sends out instructions to rapidly lock the steam turbine 1 and the outlet switch 4 of the combined-tripping generator, and meanwhile, an alarm signal is sent out.
The technical scheme of the utility model combine the attached drawing to describe the utility model on it, the utility model discloses concrete realization is not restricted by above-mentioned mode, as long as adopt the utility model discloses a method design and technical aspect carry out insubstantial modification, all are in the utility model discloses a protection scope and so on.
Claims (8)
1. The utility model provides a protection system of generator vibration warning which characterized in that: comprises the following steps:
a generator operating circuit;
the vibration signal acquisition module is used for acquiring a vibration signal of a working circuit of the generator;
and the signal input end of the command processing and control module is connected with the output end of the vibration signal acquisition module, and the control output end of the command processing and control module is connected with the control end of the working circuit of the generator.
2. The protection system for generator vibration alarm as claimed in claim 1, wherein: the generator working circuit comprises a steam turbine, a generator, a PT cabinet and a generator inlet switch which are sequentially connected, the steam turbine is physically connected with the generator, and the generator, the PT cabinet and the generator inlet switch are electrically connected.
3. The protection system for generator vibration alarm as claimed in claim 2, wherein: the vibration signal acquisition module is a displacement sensor which acquires vibration signals of the generator body.
4. The protection system for generator vibration alarm as claimed in claim 3, wherein: the displacement sensor adopts a high-precision analog quantity displacement sensor SKP 3-2.
5. The protection system for generator vibration alarm as claimed in claim 3, wherein: the command processing and controlling module adopts a Siemens S7-1200 controller, the signal input end of the controller is connected with the output end of the displacement sensor, and the control output end of the controller is respectively connected with the control end of the steam turbine and the control end of the generator inlet switch.
6. The protection system for generator vibration alarm as claimed in claim 5, wherein: and the controller is connected with the displacement sensor, the steam turbine and the generator inlet switch by adopting kilomega network cables.
7. The protection system for generator vibration alarm as claimed in claim 1, wherein: the alarm device also comprises an alarm module, wherein the control end of the alarm module is connected with the control output end of the command processing and control module.
8. The protection system for generator vibration alarm as claimed in claim 7, wherein: the alarm module is an audible and visual alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020474314.6U CN211880085U (en) | 2020-04-03 | 2020-04-03 | Protection system for generator vibration alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020474314.6U CN211880085U (en) | 2020-04-03 | 2020-04-03 | Protection system for generator vibration alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211880085U true CN211880085U (en) | 2020-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020474314.6U Active CN211880085U (en) | 2020-04-03 | 2020-04-03 | Protection system for generator vibration alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211880085U (en) |
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2020
- 2020-04-03 CN CN202020474314.6U patent/CN211880085U/en active Active
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