CN208239879U - A kind of speed regulation acquisition device for generator on-line monitoring system - Google Patents
A kind of speed regulation acquisition device for generator on-line monitoring system Download PDFInfo
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- CN208239879U CN208239879U CN201820016695.6U CN201820016695U CN208239879U CN 208239879 U CN208239879 U CN 208239879U CN 201820016695 U CN201820016695 U CN 201820016695U CN 208239879 U CN208239879 U CN 208239879U
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Abstract
The utility model discloses a kind of speed regulation acquisition devices for generator on-line monitoring system, including 4-20mA analog acquisition unit, A/D conversion chip, DSP processing chip, optical coupling isolator, exit relay and cpu chip；4-20mA analog acquisition unit is connected with A/D conversion chip；The output end of A/D conversion chip is connected with the input terminal of DSP processing chip；The input terminal of DSP processing chip is also connected with optical coupling isolator, and optical coupling isolator is used to acquire the hard contact state of digital electro-hydraulic control system or DCS system；The output end of DSP processing chip is connected with the input terminal of exit relay, and exit relay is connected with operation alarm module；The data transmission terminal of cpu chip is connected with the data transmission terminal of DSP processing chip.The utility model can acquire the important control amount and the state amount of outputing of the output of unit speed-regulating system in real time, and the speed-regulating system operation data of acquisition is uploaded to plant stand communication host.
Description
Technical field
The utility model belongs to generator speed regulation device technical field, and in particular to one kind is for generator on-line monitoring system
The speed regulation acquisition device of system.
Background technique
The development of electric power and national economy are closely related, it is ensured that the safety of large-scale power grid has notional economic stability operation
Very important influence.And Generator Governor is connection one of generating set and the most important tie of power grid.Generator
Important adjustment equipment of the speed-regulating system as the stabilization of power grids guarantees that generating set provides the electricity stablized, quickly, economic to power grid
Source, accurately grasps the mathematical model of each grid-connected set speed adjustment system and characterisitic parameter is the important composition for relating to network parameters management
Part.
But currently, power grid, which mainly passes through the management of Generator Governor, relates to net test and technical supervision means, lack
It continues to monitor, the technological means of tracking and online evaluation online, influences the real-time of electric network fault prevention and failure response.So
It is imperative that reinforcement generating set speed-regulating system parameter and variable real-time management, dynamic response judge online, can effectively be promoted
Power grid is to the autonomous analysis of speed-regulating system state and appreciable levels.
Utility model content
In view of the above-mentioned problems, the utility model proposes a kind of speed regulation acquisition device for generator on-line monitoring system,
The important control amount and the state amount of outputing that the output of unit speed-regulating system can be acquired in real time are collected to the upload of plant stand communication host
Speed-regulating system operation data, realize generator speed regulating control performance on-line monitoring and assessment.
It realizes above-mentioned technical purpose, reaches above-mentioned technical effect, the utility model is achieved through the following technical solutions:
A kind of speed regulation acquisition device for generator on-line monitoring system, including 4-20mA analog acquisition unit, A/D
Conversion chip, DSP processing chip, optical coupling isolator, exit relay and cpu chip；
The output end of the 4-20mA analog acquisition unit is connected with the input terminal of A/D conversion chip, for acquiring vapour
The analog quantity of turbine digital electrohydraulic control system output, and it is sent to A/D conversion chip；
The output end of the A/D conversion chip is connected with the input terminal of DSP processing chip；
The input terminal of the DSP processing chip is also connected with the output end of optical coupling isolator, and the optical coupling isolator is used for
Acquire the hard contact state of digital electro-hydraulic control system or DCS system；The output end of the DSP processing chip and outlet
The input terminal of relay is connected, and exit relay is connected with operation alarm module, is used for outputting alarm signal；
The data transmission terminal of the cpu chip is connected with the data transmission terminal of DSP processing chip, and DSP, which will handle chip, to be located
The information managed sends cpu chip to.
Further, a kind of speed regulation acquisition device for generator on-line monitoring system, it is characterised in that: also
Including RS485 communication interface, the DSP processing chip is communicated by RS485 communication interface with DCS system.
Further, a kind of speed regulation acquisition device for generator on-line monitoring system further includes that optical fiber is logical
It interrogates module and plant stand monitors host, one end of the optical fiber communication modules handles chip by optical fiber and DSP, and the other end passes through light
It is fine to be connected with plant stand monitoring host.
Further, a kind of speed regulation acquisition device for generator on-line monitoring system, further includes display,
The data transmission terminal of the display is connected with the data transmission terminal of cpu chip.
Further, a kind of speed regulation acquisition device for generator on-line monitoring system, further includes printer,
The input terminal of the printer is connected with the output end of cpu chip.
Further, the operation alarm module includes that contact is outputed in warning light and alarm.
The utility model has the beneficial effects that
The speed regulation acquisition device for generator on-line monitoring system of the utility model realizes and steam turbine digital electricity
Liquid control system (digital electro-hydraulic control system) and the acquisition of the communications and data of DCS system (Distributed Control System), with
It is accurate to obtain high speed and real-time speed-regulating system key variables and parameter, while the safe and stable operation of governor is not interfered, it fills
Perturbation analysis and the fault pre-alarming effect of monitoring system are waved in distribution, promote autonomous analysis and assessment water of the power grid to system disturbance
It is flat.
The speed regulation acquisition device for generator on-line monitoring system of the utility model, using the standard of modularized design
Dongle configuration, connection is simple, universal flexible；Modularized design, easy to connect, universal flexible, expandability are good；And it is provided with and accuses
Alert module, any exception information that collection process occurs will be transmitted to operation alarm module, and by operation alarm module to outgoing
Alarm prompt out, comprising: to lower communicating interrupt or exception, transmitter broken string or abnormal, measurement PT broken string, slave device failure or
Abnormal, on-line monitoring function exits, strong antijamming capability.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of embodiment of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to embodiments, to this
Utility model is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain that this is practical
It is novel, it is not used to limit the utility model.
The application principle of the utility model is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, a kind of speed regulation acquisition device for generator on-line monitoring system, including 4-20mA analog quantity are adopted
Collect unit, A/D conversion chip, DSP processing chip, optical coupling isolator, exit relay and cpu chip；
The output end of the 4-20mA analog acquisition unit is connected with the input terminal of A/D conversion chip, for acquiring vapour
The analog quantity of turbine digital electrohydraulic control system output, and it is sent to A/D conversion chip；Steam turbine digital electrichydraulic control system
The analog quantity of system output include: steam pressure before turbine speed (poor), generator power, main inlet throttle-stop valve, governing stage steam pressure,
Reheating outlet vapor pressure, intermediate pressure cylinder exhaust steam pressure, the side DEH theory frequency modulation power, main valve bit instruction (being at present 8 tunnels) etc..
The output end of the A/D conversion chip is connected with the input terminal of DSP processing chip, is calculated by DSP processing chip
DC quantity amplitude；
The input terminal of the DSP processing chip is also connected with the output end of optical coupling isolator, and the optical coupling isolator is used for
Acquire the hard contact state of digital electro-hydraulic control system or DCS system；The output end of the DSP processing chip and outlet
The input terminal of relay is connected, and exit relay is connected with operation alarm module, is used for outputting alarm signal；Preferably, described
Running alarm module includes that contact is outputed in warning light and alarm, when operation alarm module is activated, lights warning light, and drive
Contact is outputed in alarm, issues prompt information；
The data transmission terminal of the cpu chip is connected with the data transmission terminal of DSP processing chip, and DSP, which will handle chip, to be located
The information managed sends cpu chip to.
Further, a kind of speed regulation acquisition device for generator on-line monitoring system, it is characterised in that: also
Including RS485 communication interface, the DSP processing chip is communicated by RS485 communication interface with DCS system, to inquire DCS system
Speed governing operation data；The speed governing operation data include each valve opening, load instruction, chirp parameter or the tune of speed-regulating system
Save speed-regulating systems parameter and the quantity of states such as coefficient, PLU action signal, primary frequency modulation investment, primary frequency modulation movement.Specifically:
RS485 communication interface issues query message according to the period distances of setting with modbus specification, and receives and parse response message,
Then the speed governing operation data inquired are transmitted to plant stand by optical fiber communication modules and monitor host；Meanwhile RS485 communication connects
Any exception information, such as communicating interrupt, response abnormality, communication timeout etc. that mouth occurs in communication process all will be transmitted to fortune
Row alarm module, externally issues alarm prompt.
Further, a kind of speed regulation acquisition device for generator on-line monitoring system further includes that optical fiber is logical
It interrogates module and plant stand monitors host, one end of the optical fiber communication modules handles chip by optical fiber and DSP, and the other end passes through light
It is fine to be connected with plant stand monitoring host.Specifically: the optical fiber communication modules summarize the data of acquisition calculating, communicate to DCS system
Data and run alarm module exception information after form Data Frame message, according to HTM1 period (1ms) by optical fiber with
IEC60044-8 specification is sent to plant stand monitoring host, realizes speed-regulating system operation data and speed regulation acquisition device self information
It is transmitted to monitoring host.
In an embodiment of the present invention, in order to realize human-computer interaction, described one kind is online for generator
The speed regulation acquisition device of monitoring system, further includes display, and the data transmission terminal of the display and the data of cpu chip are transmitted
End is connected.
Further, a kind of speed regulation acquisition device for generator on-line monitoring system, further includes printer,
The input terminal of the printer is connected with the output end of cpu chip, for printing the information crossed by DSP processing chip processing.
In conclusion the function that the present apparatus is realized is specifically as shown in table 1:
Table 1
The speed regulation acquisition device for generator on-line monitoring system of the utility model realizes and steam turbine digital electricity
Liquid control system (digital electro-hydraulic control system) and the acquisition of the communications and data of DCS system (dcs),
Accurately to obtain high speed and real-time speed-regulating system key variables and parameter, while the safe and stable operation of governor is not interfered,
Perturbation analysis and the fault pre-alarming effect for giving full play to monitoring system promote autonomous analysis and assessment water of the power grid to system disturbance
It is flat.
The speed regulation acquisition device for generator on-line monitoring system of the utility model, using the standard of modularized design
Dongle configuration, connection is simple, universal flexible；Modularized design, easy to connect, universal flexible, expandability are good；And it is provided with and accuses
Alert module, any exception information that collection process occurs will be transmitted to operation alarm module, and by operation alarm module to outgoing
Alarm prompt out, comprising: to lower communicating interrupt or exception, transmitter broken string or abnormal, measurement PT broken string, slave device failure or
Abnormal, on-line monitoring function exits, strong antijamming capability.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (6)
1. a kind of speed regulation acquisition device for generator on-line monitoring system, it is characterised in that: adopted including 4-20mA analog quantity
Collect unit, A/D conversion chip, DSP processing chip, optical coupling isolator, exit relay and cpu chip；
The output end of the 4-20mA analog acquisition unit is connected with the input terminal of A/D conversion chip, for acquiring steam turbine
The analog quantity of digital electrohydraulic control system output, and it is sent to A/D conversion chip；
The output end of the A/D conversion chip is connected with the input terminal of DSP processing chip；
The input terminal of the DSP processing chip is also connected with the output end of optical coupling isolator, and the optical coupling isolator is for acquiring
The hard contact state of digital electro-hydraulic control system or DCS system；The output end and outlet relay of the DSP processing chip
The input terminal of device is connected, and exit relay is connected with operation alarm module, is used for outputting alarm signal；
The data transmission terminal of the cpu chip is connected with the data transmission terminal of DSP processing chip, and DSP processing chip will process
Information send cpu chip to.
2. a kind of speed regulation acquisition device for generator on-line monitoring system according to claim 1, it is characterised in that:
It further include RS485 communication interface, the DSP processing chip is communicated by RS485 communication interface with DCS system.
3. a kind of speed regulation acquisition device for generator on-line monitoring system according to claim 1, it is characterised in that:
It further include optical fiber communication modules and plant stand monitoring host, one end of the optical fiber communication modules handles chip by optical fiber and DSP,
The other end monitors host with plant stand by optical fiber and is connected.
4. a kind of speed regulation acquisition device for generator on-line monitoring system according to claim 1, it is characterised in that:
It further include display, the data transmission terminal of the display is connected with the data transmission terminal of cpu chip.
5. a kind of speed regulation acquisition device for generator on-line monitoring system according to claim 1, it is characterised in that:
It further include printer, the input terminal of the printer is connected with the output end of cpu chip.
6. a kind of speed regulation acquisition device for generator on-line monitoring system according to claim 1, it is characterised in that:
The operation alarm module includes that contact is outputed in warning light and alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820016695.6U CN208239879U (en) | 2018-01-05 | 2018-01-05 | A kind of speed regulation acquisition device for generator on-line monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820016695.6U CN208239879U (en) | 2018-01-05 | 2018-01-05 | A kind of speed regulation acquisition device for generator on-line monitoring system |
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| CN208239879U true CN208239879U (en) | 2018-12-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108132660A (en) * | 2018-01-05 | 2018-06-08 | 贵州电网有限责任公司电力调度控制中心 | A kind of speed governing harvester for generator on-line monitoring system |
-
2018
- 2018-01-05 CN CN201820016695.6U patent/CN208239879U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108132660A (en) * | 2018-01-05 | 2018-06-08 | 贵州电网有限责任公司电力调度控制中心 | A kind of speed governing harvester for generator on-line monitoring system |
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