CN203069211U - Online detection device for operation state of generator - Google Patents
Online detection device for operation state of generator Download PDFInfo
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- CN203069211U CN203069211U CN 201320091651 CN201320091651U CN203069211U CN 203069211 U CN203069211 U CN 203069211U CN 201320091651 CN201320091651 CN 201320091651 CN 201320091651 U CN201320091651 U CN 201320091651U CN 203069211 U CN203069211 U CN 203069211U
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Abstract
The utility model belongs to the field of generator operation state detecting devices. An online detection device for operation states of a generator can be connected with signals of sensors such as an AC voltage sensor, an AC current sensor, a power sensor, a negative-sequence current transmitter, a temperature sensor, an intelligent switch sensor and an intelligent isolating sensor and the like and can realize analysis and processing of the connected signals. The signals are sent to a computer host through a serial port after passing through an RS485-to-RS232 converting interface. The online detection device for the operation states of the generator can be used for detecting states of exciting voltage and exciting current of the generator, outlet voltage and current of the generator, outlet circuit breaker and the like. An accurate basis is provided for normal operation of the generator and fault diagnosis. The online detection device for the operation states of the generator is simple in circuit and can realize data collection and processing of various sensors.
Description
Technical field
The utility model relates to a kind of generator detection device.
Background technology
Along with China's net capacity continues to increase, electric pressure is more and more higher, and the generating set capacity of newly-increased generating plant constantly increases, the reform that deepens continuously of electric power system in addition, and electric power enterprise becomes more and more stronger to the demand of power informatization and robotization.Generator is as the core cell of generating plant, and it is significant how monitoring the device of genset running status in real time and accurately it being showed for generating plant operation power management system.
At present in the monitoring and the analysis that mostly are certain device or certain characteristic quantity aspect the generators in power systems monitoring, follow-up work major part to generator operating conditions belongs to the monitoring of real time datas such as active power, reactive power, voltage, merit angle, temperature, and the data that monitor are showed intuitively.At present the electric system generator detection device is by separate the transmitting of each pick-up unit data, must cause problems such as line attachment complexity, generator operating conditions are not directly perceived.For example, each sensing device needs a transmission lines, certainly will cause the line attachment complexity like this; Generator detects data and directly describes with data, certainly will bring inconvenience in observation; When adopting the redundant sensor device, will further increase the complex circuit degree.
The utility model content
Goal of the invention of the present utility model is: the problem at prior art exists provides a kind of operation state of generator on-line measuring device.Purpose is to simplify the complexity of circuit when multiple sensors is carried out data acquisition, in other words, finish complicated sensor data acquisition and work for the treatment of with simple circuit.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of operation state of generator on-line measuring device, described operation state of generator on-line measuring device comprises:
Be connected to the non electrical quantity sensor of multifunctional data acquisition card so that the state of generator is measured;
Be connected to multifunctional data acquisition card with the negative phase-sequence circuit signal in the tested three-phase circuit through isolating and converting to and the negative-sequence current transmitter of importing the proportional DC voltage of negative phase-sequence or electric current;
Be connected to multifunctional data acquisition card to measure the power sensor of generated output power;
Be connected to multifunctional data acquisition card to measure the AC current sensor of generator machine end alternating current;
Be connected to multifunctional data acquisition card or be connected to intelligent isolation sensor to measure the AC voltage sensor of generator machine end alternating voltage;
Be connected to main frame with the multifunctional data acquisition card as the data acquisition interface unit of main frame;
Be connected to translation interface with measurement data is calculated, storage and data handle, and by backfeed loop to sensor measurement signal nurse one's health, from normal moveout correction and the intelligent isolation sensor of compensation automatically;
Be connected to translation interface with the intelligent switch sensor of the state that cut-offs of detection isolating switch;
Be connected to main frame becomes the computer general-purpose data with the data-switching with industry monitoring translation interface;
Described non electrical quantity sensor, described negative-sequence current transmitter, described power sensor, described AC current sensor, described AC voltage sensor send the data that collect to described multifunctional data acquisition card, and described multifunctional data acquisition card sends the data that receive to main frame and handles;
Described AC voltage sensor sends data to described intelligent isolation sensor, described intelligent isolation sensor to measurement data calculate, storage and data handle, and by backfeed loop to sensor measurement signal nurse one's health, from normal moveout correction and compensation and then send it to described translation interface automatically;
Described intelligent switch sensor sends the status signal that cut-offs of detected isolating switch to described translation interface, and described translation interface becomes the data-switching of industry monitoring the computer general-purpose data and send main frame to handle.
Described translation interface adopts RS-485 to change the RS-232 translation interface.
Described non electrical quantity passes and comprises temperature sensor and humidity sensor, and described temperature sensor and humidity sensor are measured the temperature and humidity of generator.
Described intelligent isolation sensor mainly is made up of common sensor and MCU microprocessor.
In sum, owing to adopted technique scheme, the beneficial effects of the utility model are:
1, the present invention is according to the actual conditions of power-plant operation unit, monitor switching value, analog quantity, the digital quantity of generator in real time, carry out data analysis, processing according to the data that monitor then, go to control the variation of design configuration module by the data that collect, different figure different aspects goes to describe the running status of generator, make the ruuning situation of the current generator of the clear understanding of user, finish the realization of synchronous generator running status on-line monitoring system.Operation state of generator on-line measuring device circuit is simple, can finish the data acquisition and processing (DAP) work of miscellaneous sensor.
Description of drawings
Fig. 1 is structural representation of the present utility model; And,
Fig. 2 is the workflow diagram of a kind of embodiment of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Embodiment 1
See also Fig. 1, disclosed the system layout of operation state of generator on-line measuring device hardware, described system comprises that intelligent switch sensor 1, non electrical quantity sensor 2, negative-sequence current transmitter 3, power sensor 4, AC current sensor 5, AC voltage sensor 6, intelligent isolation sensor 7, multifunctional data acquisition card 8, RS-485 change RS-232 translation interface 9.
Below specifically describe the concrete function of each building block respectively:
Intelligent switch sensor 1: in order to detect the state that cut-offs of isolating switch;
Non electrical quantity sensor 2: comprise temperature sensor, humidity sensor, temperature of generator etc. is measured;
Negative-sequence current transmitter 3: with the negative phase-sequence circuit signal in the tested three-phase circuit through isolating, convert to and import the proportional DC voltage of negative phase-sequence or electric current, note, when selecting electric parameters transducer except considering measuring accuracy and measuring speed, need select also that stability is strong, reliability is high, long service life, sensor that adaptation site environment ability is strong, as selections such as negative-sequence current transmitter, Alternative Voltage Converter;
Power sensor 4: measure generated output power;
AC current sensor 5: the alternating current of measuring generator machine end in real time;
AC voltage sensor 6: measure generator machine end alternating voltage;
Intelligence isolation sensor 7: be that common sensor and MCU microprocessor combine and form, combine computing and the storage capacity of microprocessor on common sensor basis.Microprocessor is the core of intellectual transmitter, it not only can calculate measurement data, storage and data are handled, can also by backfeed loop to sensor measurement signal nurse one's health, from normal moveout correction and automatically compensation etc., so that image data reaches best;
Multifunctional data acquisition card 8: as the data acquisition interface unit of main frame, the hardware expressive ability of selection must be able to satisfy the demand of this monitoring system;
RS-485 changes RS-232 translation interface 9: realize by usually using the RS485 data acquisition control to convert computer general-purpose serial ports RS-232 on the industry monitoring.
See also Fig. 2, introduce a kind of process of utilizing said apparatus to realize the online detection of operation state of generator below in conjunction with Fig. 2, comprise the steps:
Step 10, obtain the generator operation data by sensor or mutual inductor.
Step 11, will become nominal value from the data reduction that mutual inductor or sensor transmit, be 0-5V as voltage.
After step 12, the process conversion each parameter is reduced into actual value, is multiplied by conversion factor for each parameter.
Step 13, each data in every group of data are compared with corresponding alarm range.
If step 14 image data in alarm range, judges that last data is whether in alarm range again.
If step 15 image data in alarm range or current data in alarm range and last data also in alarm range, then effectively carry out the data transmission.
If step 16 current data in alarm range and last data not in alarm range, then do not process.
Step 17, the valid data that receive are judged again, judged whether in alarm range.
If step 18 in warning is enclosed, is then made alarm.
If step 19 not in alarm range, is then transferred to master routine to data and is handled.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. an operation state of generator on-line measuring device is characterized in that, described operation state of generator on-line measuring device comprises:
Be connected to the non electrical quantity sensor of multifunctional data acquisition card so that the state of generator is measured;
Be connected to multifunctional data acquisition card with the negative phase-sequence circuit signal in the tested three-phase circuit through isolating and converting to and the negative-sequence current transmitter of importing the proportional DC voltage of negative phase-sequence or electric current;
Be connected to multifunctional data acquisition card to measure the power sensor of generated output power;
Be connected to multifunctional data acquisition card to measure the AC current sensor of generator machine end alternating current;
Be connected to multifunctional data acquisition card or be connected to intelligent isolation sensor to measure the AC voltage sensor of generator machine end alternating voltage;
Be connected to main frame with the multifunctional data acquisition card as the data acquisition interface unit of main frame;
Be connected to translation interface with measurement data is calculated, storage and data handle, and by backfeed loop to sensor measurement signal nurse one's health, from normal moveout correction and the intelligent isolation sensor of compensation automatically;
Be connected to translation interface with the intelligent switch sensor of the state that cut-offs of detection isolating switch;
Be connected to main frame becomes the computer general-purpose data with the data-switching with industry monitoring translation interface;
Described non electrical quantity sensor, described negative-sequence current transmitter, described power sensor, described AC current sensor, described AC voltage sensor send the data that collect to described multifunctional data acquisition card, and described multifunctional data acquisition card sends the data that receive to main frame and handles;
Described AC voltage sensor sends data to described intelligent isolation sensor, described intelligent isolation sensor to measurement data calculate, storage and data handle, and by backfeed loop to sensor measurement signal nurse one's health, from normal moveout correction and compensation and then send it to described translation interface automatically;
Described intelligent switch sensor sends the status signal that cut-offs of detected isolating switch to described translation interface, and described translation interface becomes the data-switching of industry monitoring the computer general-purpose data and send main frame to handle.
2. operation state of generator on-line measuring device as claimed in claim 1 is characterized in that, described translation interface adopts RS-485 to change the RS-232 translation interface.
3. operation state of generator on-line measuring device as claimed in claim 1 is characterized in that, described non electrical quantity sensor comprises temperature sensor and humidity sensor, and described temperature sensor and humidity sensor are measured the temperature and humidity of generator.
4. operation state of generator on-line measuring device as claimed in claim 1 is characterized in that, described intelligent isolation sensor mainly is made up of common sensor and MCU microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091651 CN203069211U (en) | 2013-02-28 | 2013-02-28 | Online detection device for operation state of generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091651 CN203069211U (en) | 2013-02-28 | 2013-02-28 | Online detection device for operation state of generator |
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| Publication Number | Publication Date |
|---|---|
| CN203069211U true CN203069211U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320091651 Expired - Fee Related CN203069211U (en) | 2013-02-28 | 2013-02-28 | Online detection device for operation state of generator |
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| CN (1) | CN203069211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104111422A (en) * | 2014-07-25 | 2014-10-22 | 北京机械设备研究所 | Parallel running fault detection method for double machine sets |
-
2013
- 2013-02-28 CN CN 201320091651 patent/CN203069211U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104111422A (en) * | 2014-07-25 | 2014-10-22 | 北京机械设备研究所 | Parallel running fault detection method for double machine sets |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20170228 |