CN108051744A - A kind of excitation harvester for generator on-line monitoring system - Google Patents
A kind of excitation harvester for generator on-line monitoring system Download PDFInfo
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- CN108051744A CN108051744A CN201810010636.2A CN201810010636A CN108051744A CN 108051744 A CN108051744 A CN 108051744A CN 201810010636 A CN201810010636 A CN 201810010636A CN 108051744 A CN108051744 A CN 108051744A
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- generator
- dsp processing
- monitoring system
- line monitoring
- processing chips
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/346—Testing of armature or field windings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention discloses a kind of excitation harvester for generator on-line monitoring system, including AC sampling unit, 4 20mA analog acquisitions units, A/D conversion chips, DSP processing chips, optical coupling isolator, exit relay and cpu chip；AC sampling unit and 4 20mA analog acquisitions units are connected respectively with A/D conversion chips；The output terminal of A/D conversion chips is connected with the input terminal of DSP processing chips；The input terminal of DSP processing chips is also connected with the output terminal of optical coupling isolator；The output terminal of the DSP processing chips is connected with the input terminal of exit relay, and exit relay is connected with operation alarm module；The data transmission terminal of the cpu chip is connected with the data transmission terminal of DSP processing chips.At a high speed, in real time, reliability is high for the data acquisition and communication of the present invention, and without interference with the safe and stable operation of field regulator；Modularized design, easy to connect, universal flexible, expandability are good；Strong antijamming capability.
Description
Technical field
The invention belongs to generator excitation harvester technical fields, and in particular to one kind is for generator on-line monitoring system
The excitation harvester of system.
Background technology
Large-scale power grid is generally made of the generating set of several paired runnings, the security of generating set and operation of power networks
It influences each other with control performance, mutually restrict, and generator excited system is the most important knob for contacting generating set and power grid
One of band.Generator excited system is accurately grasped each as the important important object for relating to net equipment, being net source coordination management
The mathematical model of the grid-connected DCgenerator motor field system of platform is to build one of strong, intelligent grid basic work with characterisitic parameter.
At present, excitation system mainly measures hand to power grid variation dynamic response performance by off-line calculation and field test
Section can not judge the abnormality of certain generator excitation system online, be rung so as to affect electric network fault prevention and failure
The real-time answered.Therefore, using on-line monitoring and the method for assessment, it is possible to strengthen to generator excitation system parameter and change
Real-time management is measured, the perturbation analysis of monitoring system and fault pre-alarming effect is played, promotes autonomous analysis of the power grid to system disturbance
And appreciable levels.
The content of the invention
In view of the above-mentioned problems, the present invention proposes a kind of excitation harvester for generator on-line monitoring system, it can
Important electrical quantity, controlled quentity controlled variable and the state amount of outputing of acquisition generating set in real time, and being uploaded to plant stand host, data acquisition and logical
At a high speed, in real time, reliability is high for letter, and without interference with the safe and stable operation of field regulator；Modularized design, it is easy to connect,
Universal flexible, expandability are good；Strong antijamming capability.
It realizes above-mentioned technical purpose, reaches above-mentioned technique effect, the invention is realized by the following technical scheme：
A kind of excitation harvester for generator on-line monitoring system is simulated including AC sampling unit, 4-20mA
Measure collecting unit, A/D conversion chips, DSP processing chips, optical coupling isolator, exit relay and cpu chip；
The input with A/D conversion chips respectively of the output terminal of the AC sampling unit and 4-20mA analog acquisition units
End is connected, and is respectively used to the mutual inductor output of acquisition system and the controlled quentity controlled variable of field regulator exports, and be sent to A/D conversion cores
Piece；
The output terminal of the A/D conversion chips is connected with the input terminal of DSP processing chips；
The input terminal of the DSP processing chips is also connected with the output terminal of optical coupling isolator, and the optical coupling isolator is used for
Gather the hard contact state of field regulator；The output terminal of the DSP processing chips is connected with the input terminal of exit relay, goes out
Mouth relay is connected with operation alarm module, for outputting alarm signal；
The data transmission terminal of the cpu chip is connected with the data transmission terminal of DSP processing chips, and DSP processing chips will encourage
Magnetic information sends cpu chip to.
Further, the excitation harvester for generator on-line monitoring system further includes display, described aobvious
Show that the data transmission terminal of device is connected with the data transmission terminal of cpu chip.
Further, the excitation harvester for generator on-line monitoring system further include optical fiber communication modules and
Plant stand monitors host, and by optical fiber and DSP processing chips, the other end passes through optical fiber and plant stand for one end of the fiber optic telecommunications module
Monitoring host is connected.
Further, a kind of excitation harvester for generator on-line monitoring system, further includes RS485 and leads to
Believe interface, the DSP processing chips are communicated by RS485 communication interfaces with field regulator, for the Excitation Adjustment that will be inquired
Section device relates to network parameters and status data and is transmitted to plant stand monitoring host by fiber optic telecommunications module.
Further, a kind of excitation harvester for generator on-line monitoring system, further includes printer,
The input terminal of the printer is connected with the output terminal of cpu chip.
Further, the quantity of the A/D conversion chips is 2, the input terminal of the two respectively with AC sampling unit and
The output terminal of 4-20mA analog acquisition units is connected, and the output terminal of the two is connected with DSP processing chips.
Further, the operation alarm module includes warning light and contact is outputed in alarm.
Beneficial effects of the present invention：
The present invention proposes a kind of excitation harvester for generator on-line monitoring system, can gather generator in real time
Group important electrical quantity, controlled quentity controlled variable and the state amount of outputing, and uploaded to plant stand host, data acquisition and communication at a high speed, in real time, can
It is high by property, and without interference with the safe and stable operation of field regulator；Modularized design, easy to connect, universal flexible are extendible
Property is good；And there is provided alarm module, any exception information that gatherer process occurs will be transmitted to operation alarm module, and by running
Alarm module externally sends alarm prompt, including：To lower communicating interrupt or exception, transmitter broken string or abnormal, measurement PT broken strings,
Slave device failure or exception, on-line monitoring function exit, strong antijamming capability.
Description of the drawings
Fig. 1 is the structure diagram of an embodiment of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The application principle of the present invention is explained in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of excitation harvester for generator on-line monitoring system, including AC sampling unit,
4-20mA analog acquisitions unit, A/D conversion chips, DSP processing chips, optical coupling isolator, exit relay and cpu chip；
The input with A/D conversion chips respectively of the output terminal of the AC sampling unit and 4-20mA analog acquisition units
End is connected, and is respectively used to the mutual inductor output of acquisition system and the controlled quentity controlled variable of field regulator exports, the mutual inductor output letter
Number include：System voltage, set end voltage, generator terminal electric current, excitation voltage, exciting current；The controlled quentity controlled variable of the field regulator is defeated
Going out signal includes：Control voltage output, PSS (power system steady stability device) outputs, voltage gives and PSVR (generator excitations
Regulating device) output etc., and it is sent to A/D conversion chips；
The output terminal of the A/D conversion chips is connected with the input terminal of DSP processing chips, by DSP processing chips to receiving
To signal handled；In a preferred embodiment of the invention, the quantity of the A/D conversion chips is 2, the input of the two
Output terminal respectively with AC sampling unit and 4-20mA analog acquisition units is held to be connected, the output terminal of the two at DSP
Reason chip is connected；
The input terminal of the DSP processing chips is also connected with the output terminal of optical coupling isolator, and the optical coupling isolator is used for
The main hard contact state of field regulator is gathered, and is exported to DSP processing chips；The output terminal of the DSP processing chips
It is connected with the input terminal of exit relay, exit relay is connected with operation alarm module, for outputting alarm signal, including surveying
Measure exception, communicating interrupt, itself exception etc.；The operation alarm module includes warning light and contact is outputed in alarm；
The data transmission terminal of the cpu chip is connected with the data transmission terminal of DSP processing chips, and DSP processing chips will encourage
Magnetic information sends cpu chip to.
In specific implementation process, the AC sampling unit, 4-20mA analog acquisitions unit, A/D conversion chips,
DSP processing chips, optical coupling isolator, exit relay and cpu chip are using the device that can be purchased on the market.
In an embodiment of the present invention, it is described for generator on-line monitoring system in order to realize human-computer interaction
Excitation harvester further includes display, and the data transmission terminal of the display is connected with the data transmission terminal of cpu chip, so as to
Realize the inquiry on the spot of gathered data, event message, displacement information etc..
In an embodiment of the present invention, the excitation harvester for generator on-line monitoring system further includes
Printer, the input terminal of the printer are connected with the output terminal of cpu chip, processed by DSP processing chips for printing
Information.
In an embodiment of the present invention, the excitation harvester for generator on-line monitoring system further includes
Optical fiber communication modules and plant stand monitoring host, one end of the fiber optic telecommunications module passes through optical fiber and DSP processing chips, the other end
Host is monitored with plant stand to be connected, the information collected is directly transferred to plant stand monitoring host by optical fiber；Meanwhile gatherer process
Any exception information occurred will be transmitted to operation alarm module, and externally send alarm prompt by operation alarm module, use
Excitation data sending to plant stand is monitored host, sends gap periods only 1ms, realized by optical-fibre channel as data transmission link
The real-time reliable upload of excitation gathered data.
The excitation harvester for generator on-line monitoring system further includes RS485 communication interfaces, at the DSP
Reason chip is communicated by RS485 communication interfaces with field regulator, and RS485 communication interfaces are with modbus stipulations according to the week of setting
Period is received and parsing response message every sending query message, and the field regulator inquired is related to network parameters and state
Data are transmitted to plant stand by fiber optic telecommunications module and monitor host, while are sent to cpu chip, for being shown by display or
Person is printed by printer, and being also uploaded to plant stand by optical fiber communication modules with IEC60044-8 agreements monitors host.Together
When, any exception information that RS485 communication interfaces occur in communication process, such as communicating interrupt, response abnormality, communication overtime
Deng all will be transmitted to operation alarm module, device externally sends alarm prompt.The excitation relates to network parameters and refers to：AVR main rings (electricity
Pressure ring) pid parameter, it is low encourage/cross encourage limitation secondary ring parameter, adjust poor parameter, PSS model parameters；The excited state data refer to：
Fault message, warning information, restricted information and running state information of AVR etc..The excitation harvester can also pass through RS485
Communication interface receives unit electrical quantity, controlled quentity controlled variable and quantity of state, so as to save analog quantity sampling element.
In conclusion the major function that the present apparatus is realized includes acquisition computing function, communication function and operation warning function,
As shown in table 1：
Table 1
In summary：
The present invention proposes a kind of excitation harvester for generator on-line monitoring system, can gather generator in real time
Group important electrical quantity, controlled quentity controlled variable and the state amount of outputing, and uploaded to plant stand host, data acquisition and communication at a high speed, in real time, can
It is high by property, and without interference with the safe and stable operation of field regulator；Modularized design, easy to connect, universal flexible are extendible
Property is good；And there is provided alarm module, any exception information that gatherer process occurs will be transmitted to operation alarm module, and by running
Alarm module externally sends alarm prompt, including：To lower communicating interrupt or exception, transmitter broken string or abnormal, measurement PT broken strings,
Slave device failure or exception, on-line monitoring function exit, strong antijamming capability.
The basic principles, main features and the advantages of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (7)
1. a kind of excitation harvester for generator on-line monitoring system, it is characterised in that：Including AC sampling unit, 4-
20mA analog acquisitions unit, A/D conversion chips, DSP processing chips, optical coupling isolator, exit relay and cpu chip；
The output terminal of the AC sampling unit and 4-20mA analog acquisition units input terminal phase with A/D conversion chips respectively
Even, it is respectively used to the mutual inductor output of acquisition system and the controlled quentity controlled variable of field regulator exports, and is sent to A/D conversion chips；
The output terminal of the A/D conversion chips is connected with the input terminal of DSP processing chips；
The input terminal of the DSP processing chips is also connected with the output terminal of optical coupling isolator, and the optical coupling isolator is used to gather
The hard contact state of field regulator；The output terminal of the DSP processing chips is connected with the input terminal of exit relay, export after
Electric appliance is connected with operation alarm module, for outputting alarm signal；
The data transmission terminal of the cpu chip is connected with the data transmission terminal of DSP processing chips, and DSP processing chips believe excitation
Breath sends cpu chip to.
2. a kind of excitation harvester for generator on-line monitoring system according to claim 1, it is characterised in that：
The excitation harvester for generator on-line monitoring system further includes display, the data transmission terminal of the display with
The data transmission terminal of cpu chip is connected.
3. a kind of excitation harvester for generator on-line monitoring system according to claim 1, it is characterised in that：
The excitation harvester for generator on-line monitoring system further includes optical fiber communication modules and plant stand monitoring host, described
By optical fiber and DSP processing chips, the other end monitors host with plant stand by optical fiber and is connected for one end of fiber optic telecommunications module.
4. a kind of excitation harvester for generator on-line monitoring system according to claim 3, it is characterised in that：
RS485 communication interfaces are further included, the DSP processing chips are communicated by RS485 communication interfaces with field regulator, for that will look into
The field regulator ask relates to network parameters and status data and is transmitted to plant stand monitoring host by fiber optic telecommunications module.
5. a kind of excitation harvester for generator on-line monitoring system according to claim 1, it is characterised in that：
Printer is further included, the input terminal of the printer is connected with the output terminal of cpu chip.
6. a kind of excitation harvester for generator on-line monitoring system according to claim 1, it is characterised in that：
The quantity of the A/D conversion chips is 2, the input terminal of the two respectively with AC sampling unit and 4-20mA analog acquisition lists
The output terminal of member is connected, and the output terminal of the two is connected with DSP processing chips.
7. a kind of excitation harvester for generator on-line monitoring system according to claim 1, it is characterised in that：
The operation alarm module includes warning light and contact is outputed in alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810010636.2A CN108051744A (en) | 2018-01-05 | 2018-01-05 | A kind of excitation harvester for generator on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810010636.2A CN108051744A (en) | 2018-01-05 | 2018-01-05 | A kind of excitation harvester for generator on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108051744A true CN108051744A (en) | 2018-05-18 |
Family
ID=62126388
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810010636.2A Pending CN108051744A (en) | 2018-01-05 | 2018-01-05 | A kind of excitation harvester for generator on-line monitoring system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1949656A (en) * | 2006-11-09 | 2007-04-18 | 天津理工大学 | Excited controller data acquiring and processing system based on DSP and working method thereof |
| CN101187811A (en) * | 2007-11-26 | 2008-05-28 | 天津理工大学 | Generator excitation controller communication system based on DSP and its working method |
| CN201869149U (en) * | 2010-11-25 | 2011-06-15 | 杭州三和电控设备有限公司 | DSP-based synchronous generator excitation regulator |
| CN202094837U (en) * | 2011-06-24 | 2011-12-28 | 河北工业大学电工厂 | Digital excitation control system based on 32-digit floating point type processor |
| CN204832461U (en) * | 2015-08-14 | 2015-12-02 | 中国长江电力股份有限公司 | Generator excited system information on -line monitoring management system |
| CN106771852A (en) * | 2016-11-25 | 2017-05-31 | 国网浙江省电力公司电力科学研究院 | A kind of online monitoring data unification collection of net source and analysis and processing method |
| CN207717940U (en) * | 2018-01-05 | 2018-08-10 | 贵州电网有限责任公司电力调度控制中心 | A kind of excitation harvester for generator on-line monitoring system |
-
2018
- 2018-01-05 CN CN201810010636.2A patent/CN108051744A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1949656A (en) * | 2006-11-09 | 2007-04-18 | 天津理工大学 | Excited controller data acquiring and processing system based on DSP and working method thereof |
| CN101187811A (en) * | 2007-11-26 | 2008-05-28 | 天津理工大学 | Generator excitation controller communication system based on DSP and its working method |
| CN201869149U (en) * | 2010-11-25 | 2011-06-15 | 杭州三和电控设备有限公司 | DSP-based synchronous generator excitation regulator |
| CN202094837U (en) * | 2011-06-24 | 2011-12-28 | 河北工业大学电工厂 | Digital excitation control system based on 32-digit floating point type processor |
| CN204832461U (en) * | 2015-08-14 | 2015-12-02 | 中国长江电力股份有限公司 | Generator excited system information on -line monitoring management system |
| CN106771852A (en) * | 2016-11-25 | 2017-05-31 | 国网浙江省电力公司电力科学研究院 | A kind of online monitoring data unification collection of net source and analysis and processing method |
| CN207717940U (en) * | 2018-01-05 | 2018-08-10 | 贵州电网有限责任公司电力调度控制中心 | A kind of excitation harvester for generator on-line monitoring system |
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