CN112947386A - Remote distributed frequency converter fault diagnosis system - Google Patents
Remote distributed frequency converter fault diagnosis system Download PDFInfo
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- CN112947386A CN112947386A CN202110320750.7A CN202110320750A CN112947386A CN 112947386 A CN112947386 A CN 112947386A CN 202110320750 A CN202110320750 A CN 202110320750A CN 112947386 A CN112947386 A CN 112947386A
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- frequency converter
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0262—Confirmation of fault detection, e.g. extra checks to confirm that a failure has indeed occurred
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a remote distributed frequency converter fault diagnosis system which comprises a signal acquisition device, a monitoring computer, a server, a database, a master monitoring room, an alarm module and a mobile port. The invention has the beneficial effects that: the multi-port distributed frequency converters are connected in parallel, monitoring and analysis on the frequency converters are not dependent on field workers, the multi-port frequency converters are connected through a network, the frequency converters at the heavy positions are selectively monitored in a limited mode, fault reasons can be confirmed and a solution processing scheme can be provided through the network in time when faults occur, operation safety is improved, and maintenance and repair time is shortened.
Description
Technical Field
The invention relates to the technical field of frequency converters, in particular to a remote distributed frequency converter fault diagnosis system.
Background
The high-voltage frequency converter has been widely applied to industries such as electric power, metallurgy, cement, mechanical manufacturing and the like through development for many years, but the high-voltage frequency converter belongs to a complex power electronic device, the fault condition of the high-voltage frequency converter is generally diversified and complex, and great pressure is brought to fault maintenance of the frequency converter.
The frequency converters arranged in the distributed system often realize tasks through cooperative action, and when in use, the whole equipment is broken down and stops operating because one frequency converter is broken down. The single separated monitoring has high cost, needs a large amount of technicians to perform field analysis and diagnosis, has low working efficiency and long maintenance time, and influences the normal production and use of users.
Disclosure of Invention
The invention aims to provide a remote distributed frequency converter fault diagnosis system to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solution, including a signal acquisition device, a monitoring computer, a server, a database, a master monitoring room, an alarm module, and a mobile port, wherein the diagnosis steps are as follows:
monitoring the running state of a frequency converter by a signal acquisition device, transmitting data to a monitoring computer, analyzing and calculating the data by the monitoring computer, marking the serial number of the frequency converter, and recording a calculation result;
step two, the monitoring computer transmits the serial number of the frequency converter and the calculation result to a server through a network, the server marks and compares the calculation result with data in a database, analyzes and judges a fault link of the frequency converter, transmits fault information to a main monitoring room, and the main monitoring room carries out fault processing according to a fault processing standard;
and step three, the main monitoring room transmits the processing result to the server, triggers the alarm information of the main monitoring room, the server transmits the processing result to the monitoring computer, and the monitoring computer controls the frequency converter to change the working state and remotely controls the mobile port to alarm.
As a preferred technical scheme of the invention, the signal acquisition device comprises an ammeter, a voltmeter, a thermistor thermometer and a timer; the frequency converter is arranged on the frequency converter and is matched with a camera or a remote camera to further monitor the working state of the frequency converter. The monitoring computer, the server, the database and the master monitoring room communicate with each other by adopting Web service encryption service based on a Web container, the HTTP protocol is widely supported, the operation efficiency of distributed service is improved, the transmission efficiency is high after encryption, and the data security can be ensured.
As a preferred technical scheme of the invention, the monitoring computer analyzes data transmitted by the signal acquisition device and calculates a voltage time difference value, a current time difference value, a voltage change diagram, a current change diagram, an excess voltage frequency and an excess current frequency. The method has the advantages that various data are comprehensively analyzed and calculated, the causes of transformer faults are comprehensively analyzed, the obtained results are more accurate through chart visualization comparative analysis, and errors are reduced.
As a preferred technical solution of the present invention, the server performs comprehensive comparison between data transmitted by the detection computer and standard data in the database to determine whether the frequency converter is in an overvoltage fault caused by improper type selection, improper debugging, and hardware damage or an undervoltage fault caused by power grid fluctuation, improper parameter setting, and hardware damage. The database is pre-stored with corresponding data information under various fault conditions, three most possible faults are obtained through cross comparison, and the fault information is transmitted to the main monitoring room.
As a preferred technical scheme of the invention, the total monitoring room displays the running frequency, the carrier frequency, the motor rotating speed and the acceleration and deceleration time of each frequency converter under the control of PID; and correspondingly adjusting the frequency converter according to the fault information transmitted by the server, controlling the frequency converter to stop working and start alarm information when hardware is damaged, and transmitting the alarm information to the mobile port through the server. The indoor large screen subregion of total monitoring shows each long-range converter working data, when fault information was come by the server transmission, the staff carried out contrastive analysis, confirm the trouble reason, and carry out corresponding fault handling, when hardware damage appears and lead to the converter overvoltage or lack of voltage appearing, the corresponding converter of total monitoring room control through server control is shut down, and start alarm module, pass through server remote transmission with alarm information to removing the port, remind the staff to overhaul.
Compared with the prior art, the invention has the beneficial effects that: the multi-port distributed frequency converters are connected in parallel, monitoring and analysis on the frequency converters are not dependent on field workers, the multi-port frequency converters are connected through a network, the frequency converters at the heavy positions are selectively monitored in a limited mode, fault reasons can be confirmed and a solution processing scheme can be provided through the network in time when faults occur, operation safety is improved, and maintenance and repair time is shortened.
Drawings
FIG. 1 is a schematic overall diagnostic flow diagram according to the present invention;
FIG. 2 is a schematic view of the computer flow of the monitoring system of the present invention;
FIG. 3 is a schematic diagram of a server diagnostic process according to the present invention
FIG. 4 is a schematic diagram of the fault handling process of the present invention
Detailed Description
Example 1
As shown in fig. 1 to 4, the device comprises n frequency converters, the n frequency converters are positioned and numbered as 1# -n #, the corresponding signal acquisition devices transmit the collected data such as voltage value, current value, thermistor temperature, frequency converter working time, voltage peak value, current peak value and the like to a monitoring computer, and the monitoring computer classifies and records the data and obtains n groups of frequency converter working data according to time.
The monitoring computer classifies the four groups of data into preset software, calculates the voltage time difference, the current time difference, the voltage change diagram, the current change diagram, the times of the over voltage and the times of the over current to obtain a chart, stores the chart with the corresponding data after typesetting again, and transmits the chart to the server.
The server calls the data in the database, compares the data with the n groups of charts, extracts the difference data, returns the difference data to the basic monitoring data for searching, and marks abnormal data; and calling the data in the fault states in the database again, carrying out cross comparison, extracting and marking the three most similar fault states, marking the corresponding serial number m, recording and archiving the serial number m, and transmitting the serial number m, the basic monitoring data and the difference data to the master monitoring room.
Number m converter display shows error message in total accuse room, and provide possible three kinds of trouble reasons and supply staff's analysis, the staff is according to basic monitoring data and corresponding chart, compare the analysis with chart under the fault condition, confirm the trouble reason, non-hardware damages can be through the converter setting of server control monitoring computer adjustment good m, long-range troubleshooting, if hardware damages can send alarm information to removing the port through the server, remind the staff to overhaul, monitor computer control converter outage simultaneously, avoid mechanical damage to cause bigger destruction to whole.
The signal acquisition device is a general name of various sensors and also comprises a camera and a camera; the monitoring computer is a computer which is distributed beside the frequency converter and is directly connected with the signal acquisition device, and is used for directly collecting and calculating data; the server is a computer room arranged beside the main monitoring room, is connected with the monitoring computer through the internet, and is connected with the whole system in series and stores data; the database is a general name of a cloud disk and a hard disk, and a large amount of pre-stored standard data and fault data of the frequency converter are stored in the database; a plurality of display screens and communication devices are arranged in the main monitoring room, and workers need to monitor the main monitoring room in real time; the mobile port is carried by a maintainer and is communicated with a master monitoring room through a network.
Components not described in detail herein are prior art.
Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes and modifications without inventive changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (5)
1. A remote distributed frequency converter fault diagnosis system is characterized by comprising a signal acquisition device, a monitoring computer, a server, a database, a master monitoring room, an alarm module and a mobile port, wherein the diagnosis steps are as follows:
monitoring the running state of a frequency converter by a signal acquisition device, transmitting data to a monitoring computer, analyzing and calculating the data by the monitoring computer, marking the serial number of the frequency converter, and recording a calculation result;
step two, the monitoring computer transmits the serial number of the frequency converter and the calculation result to a server through a network, the server marks and compares the calculation result with data in a database, analyzes and judges a fault link of the frequency converter, transmits fault information to a main monitoring room, and the main monitoring room carries out fault processing according to a fault processing standard;
and step three, the main monitoring room transmits the processing result to the server, triggers the alarm information of the main monitoring room, the server transmits the processing result to the monitoring computer, and the monitoring computer controls the frequency converter to change the working state and remotely controls the mobile port to alarm.
2. The remote distributed frequency converter fault diagnosis system according to claim 1, characterized in that: the signal acquisition device comprises an ammeter, a voltmeter, a thermistor thermometer and a timer; and monitoring communication among computers, servers, databases and a master monitoring room, and adopting Web service encryption service based on a Web container.
3. A remote distributed frequency converter fault diagnosis system according to claim 2, characterized in that: and the monitoring computer analyzes the data transmitted by the signal acquisition device and calculates a voltage time difference value, a current time difference value, a voltage change diagram, a current change diagram, the times of over-voltage and the times of over-current.
4. A remote distributed frequency converter fault diagnosis system according to claim 3, characterized in that: and the server comprehensively compares the data transmitted by the detection computer with the standard data in the database to determine whether the frequency converter is in an overvoltage fault caused by improper type selection, improper debugging and hardware damage or an undervoltage fault caused by power grid fluctuation, improper parameter setting and hardware damage.
5. The remote distributed frequency converter fault diagnosis system according to claim 4, characterized in that: the total monitoring room displays the running frequency, the carrier frequency, the motor rotating speed and the acceleration and deceleration time of each frequency converter under the control of PID; and correspondingly adjusting the frequency converter according to the fault information transmitted by the server, controlling the frequency converter to stop working and start alarm information when hardware is damaged, and transmitting the alarm information to the mobile port through the server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110320750.7A CN112947386A (en) | 2021-03-25 | 2021-03-25 | Remote distributed frequency converter fault diagnosis system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110320750.7A CN112947386A (en) | 2021-03-25 | 2021-03-25 | Remote distributed frequency converter fault diagnosis system |
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| CN112947386A true CN112947386A (en) | 2021-06-11 |
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| CN202110320750.7A Pending CN112947386A (en) | 2021-03-25 | 2021-03-25 | Remote distributed frequency converter fault diagnosis system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI784736B (en) * | 2021-10-01 | 2022-11-21 | 台灣電力股份有限公司 | Wide-area synchronizer of power system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000354381A (en) * | 1999-06-09 | 2000-12-19 | Hitachi Ltd | Failure monitor for power converter |
| JP2008217735A (en) * | 2007-03-08 | 2008-09-18 | Nec Corp | Fault analysis system, method and program |
| CN203166735U (en) * | 2013-01-21 | 2013-08-28 | 江苏力普电子科技有限公司 | High voltage frequency converter capable of automatically diagnosing and recording faults |
| CN106199253A (en) * | 2016-06-29 | 2016-12-07 | 武汉广源动力科技有限公司 | A kind of high voltage transducer power unit remote fault diagnosis method |
| CN112147438A (en) * | 2020-09-07 | 2020-12-29 | 淮南万泰电子股份有限公司 | Fault pre-diagnosis system of high-voltage frequency converter |
-
2021
- 2021-03-25 CN CN202110320750.7A patent/CN112947386A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000354381A (en) * | 1999-06-09 | 2000-12-19 | Hitachi Ltd | Failure monitor for power converter |
| JP2008217735A (en) * | 2007-03-08 | 2008-09-18 | Nec Corp | Fault analysis system, method and program |
| CN203166735U (en) * | 2013-01-21 | 2013-08-28 | 江苏力普电子科技有限公司 | High voltage frequency converter capable of automatically diagnosing and recording faults |
| CN106199253A (en) * | 2016-06-29 | 2016-12-07 | 武汉广源动力科技有限公司 | A kind of high voltage transducer power unit remote fault diagnosis method |
| CN112147438A (en) * | 2020-09-07 | 2020-12-29 | 淮南万泰电子股份有限公司 | Fault pre-diagnosis system of high-voltage frequency converter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI784736B (en) * | 2021-10-01 | 2022-11-21 | 台灣電力股份有限公司 | Wide-area synchronizer of power system |
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