EP2335123A1 - Procédé de contrôle par diagnostic - Google Patents

Procédé de contrôle par diagnostic

Info

Publication number
EP2335123A1
EP2335123A1 EP09778336A EP09778336A EP2335123A1 EP 2335123 A1 EP2335123 A1 EP 2335123A1 EP 09778336 A EP09778336 A EP 09778336A EP 09778336 A EP09778336 A EP 09778336A EP 2335123 A1 EP2335123 A1 EP 2335123A1
Authority
EP
European Patent Office
Prior art keywords
status
database
status signal
operating data
data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09778336A
Other languages
German (de)
English (en)
Inventor
Frank Szemkus
Gernot Pohlmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DeWind Co
Original Assignee
DeWind Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DeWind Co filed Critical DeWind Co
Publication of EP2335123A1 publication Critical patent/EP2335123A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
    • G05B23/0227—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions
    • G05B23/0237—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions based on parallel systems, e.g. comparing signals produced at the same time by same type systems and detect faulty ones by noticing differences among their responses
    • 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
    • G05B2219/10—Plc systems
    • G05B2219/13—Plc programming
    • 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
    • G05B2219/30—Nc systems
    • G05B2219/31—From computer integrated manufacturing till monitoring
    • G05B2219/31457—Factory remote control, monitoring through internet
    • 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
    • G05B2223/00—Indexing scheme associated with group G05B23/00
    • G05B2223/06—Remote monitoring

Definitions

  • the present invention relates to a method for diagnostic monitoring of the operating state of a plurality of distributed at different locations technical equipment, in particular wind turbines, by receiving issued by at least one system side programmable logic control system (PLC) status codes, wherein an exchange of information with outside of the technical equipment of this remotely located and separately trained remote monitoring units is performed.
  • PLC programmable logic control system
  • Such methods for diagnostic monitoring are used in particular for the timely transmission of alarm messages as an essential prerequisite to ensure the availability of facilities, such as wind turbines.
  • Participants in corresponding alarm networks may be both individuals, such as service personnel or technicians, and computer / communication systems, such as alarm servers and monitoring systems.
  • the known methods for diagnostic monitoring can be roughly divided into those with a substantially decentralized architecture and those with a substantially central architecture.
  • system messages for example from wind turbines, for example via the telephone network, are transmitted via temporary dial-up connections.
  • Transfer terminal of an industrial modem and sent, for example, via SMS to an external communication partner.
  • BESTATIGUNGSKOPIE Communication partner an interpretation of the received signal must take place. At a disadvantage, this usually requires knowledge of the details of the system-side PLC sending the signal.
  • diagnostic monitoring are known which are based on centralized communication.
  • systems and parks send their messages to a central external communication node, which has the task of sending the message to selected communication partners via established routes.
  • a disadvantage of this type of diagnostic monitoring is the centralized structure, which can lead to a failure of the complete monitoring, if problems at the central external Communication nodes occur.
  • a scalability of the monitoring system ie the addition of additional systems to be monitored, due to the high administrative burden on the part of the central server with disadvantage often very expensive.
  • the monitoring method is that an efficient error analysis based on the error codes sent by the PLC is often not possible without additional data from or via the PLC.
  • the object of the present invention is to specify a method for the diagnostic monitoring of the type mentioned at the outset, which enables the integration, also subsequently, of a wide variety of systems to be monitored fault-tolerant and flexible independently of a central service provider.
  • each status code operating data for evaluating the status code are assigned system, then from one or more status codes and the associated operating data a the status code issuing PLC and / or the operating status characterizing complex status signal is generated and the complex status signal transmitted in the context of the information exchange to the remote monitoring units becomes.
  • the method therefore represents a kind of compromise between a completely decentralized monitoring method and a complete centralized monitoring, since the raw status codes are processed by the system. It can be ensured in this way with advantage standardization of the information transmitted to the external remote monitoring units.
  • the status signals generated and transmitted in accordance with the invention are information packages which can be read out of themselves and which can be supplied to a separate evaluation without additional technical data or the like. In particular, in each complex status signal, the operator-specific
  • Information about the corresponding PLC, from which the raw signal comes be contained in a uniform form for all complex status signals, desired by the operator.
  • the operating data are taken from a database available on the plant side, wherein the operating data relate in particular to statistical data of the technical plant.
  • the database may be stored on a hard disk within a wind turbine.
  • the operating data may include, for example, a time stamp and a plain text error log, which is assigned to the respective status code of the PLC.
  • statistical data of individual operating parameters of the plant for example, over a time interval of 10 minutes averaged values, can be taken from the database.
  • all the data which depend specifically on the PLC used can be stored within the system-side database in order to be able to correctly read out the PLC.
  • the complex status signal generated on this basis is standardized according to the invention, ie independent of the special PLC and the special format of the status code transmitted by this PLC.
  • the operating data preferably via remote data transmission, in particular according to one of the protocols ftp and / or http, a geographically distant from the location of the technical system provided operating database, the operating data relate in particular statistical data of the technical system ,
  • the operating database may be present on the part of the manufacturer of the PLC.
  • current operating data for example for interpreting the status code sent by a PLC, is taken online from the external operating database.
  • the operating data from a system-side control are retrieved, wherein the
  • Operating data in particular relate to real-time data of the technical system.
  • the complex status signal can in this way be appended to real-time data generated by the PLC.
  • operating data of a plurality of, preferably different, technical installations are assigned to controls.
  • a status code triggered by a PLC upon receipt of a status code triggered by a PLC, a set of other status codes of other PLCs can be interrogated by means of a set of rules and integrated into the complex status signal.
  • spatially propagating events can be communicated to other systems of a system ensemble.
  • a kind of early warning system For example, within a wind farm, a complex status signal about an icing condition of an installation could be used Information about the icing condition of other plant of the same park can be enriched.
  • the generation of the status signal and / or the information exchange can / can be carried out according to the invention time-controlled. For example, within a predetermined time interval for carrying out frequency analyzes of system states, a status signal can be generated and transmitted to remote monitoring units.
  • the generation of the status signal and / or the information exchange is event-controlled. For example, on the system side, a status signal is generated and sent only on the basis of status codes received from the PLC if certain value constellations of the operating data are present.
  • the status signals can be stored in a further embodiment of the method according to the invention in a system-side status database and / or in an external status database.
  • a local, plant-side status database can store the last status signal and use it to initialize external remote monitoring units.
  • the external or plant-side status database can also serve within a configurable Period to save all received status signals. This makes it possible, for example, to provide frequency analyzes of specific system states or status code histories, which can then be evaluated by external monitoring clients.
  • the operating data are taken from the system status database (13) and / or the external status database (16), the operating data relating in particular to status signals generated in a preceding step.
  • system-side status database and / or the external status database is / are integrated in the database available on the system side in the development of the invention.
  • the complex status signal (11) is additionally generated from another complex status signal, in particular another technical system.
  • status signals from available status signal generators can thus also be received within the scope of the invention and interpreted and processed as input-side status codes.
  • status signals of secondary primary status signal generators are also considered as input-side status codes and processed on the basis of the rules of the secondary status signal generator and transformed into secondary status signals. It happens virtually a cascading or series connection of two status signal generators.
  • Figure 1 Schematic representation to illustrate the information streams and spatial arrangement of
  • FIG. 2 is a flow chart for illustrating the sequence of a diagnostic method according to the invention
  • FIG. 3 shows an example of a complex status signal in XML format according to the inventive method
  • FIG. 4 shows an example of a rule stored in XML format for a flow control of the diagnostic monitoring according to the invention.
  • FIG. 1 shows schematically the data flows in the application of the method according to the invention in its basic spatial arrangement.
  • the technical installation 1 can be recognized.
  • Spatially separated from the technical installation 1 are the area 2 of the participants of the alarm network as well as an external data provision system 3 at a third location.
  • Also shown schematically is the Internet 4, via which data exchange between the technical unit 1, the subscriber area 2 and the external data delivery system 3 can take place.
  • the plant is in particular a wind turbine.
  • the PLC systems 5, 6 communicate via data channels 7, 8 with a status signal generator 9.
  • the status signal generator 9 is designed as a separate service on a system-side computer.
  • the status signal generator 9 is in communication with a diagnostic rule database 10. Rules for the course of the diagnostic procedure are stored in the diagnostic rules database 10. Further are
  • the diagnosis rule database 10 is also implemented on a computer on the part of the technical system 1.
  • a status signal 11 generated by the status signal generator 9 is distributed to different receivers via a status signal multiplexer 12.
  • the distribution of the status signal 11 via the status signal multiplexer 12 is optionally carried out on a system-side status signal log database 13 or via the Internet 4 in the subscriber area 2. Die
  • Status signal log database 13 is also connected via an internet-based web server 14 via the Internet 4 to the subscriber area 2 for a data exchange.
  • a subscriber area-side status signal multiplexer 15 serves to distribute the status signal received via the Internet 4.
  • the status signal multiplexer 15 distributes the status signal 11 to monitoring clients 16, 17 and to a subscriber-side status signal log database 16
  • a web browser 17 to read the status signal log database 13 on the part of the technical Appendix 1 via the Internet 4 and the web server 14. This function can be used in addition to the subscriber-side status signal log database 16.
  • the inventive method for diagnostic monitoring of the operating state of a plurality of distributed at different locations technical equipment 1 is outlined below with reference to FIG 1.
  • the status signal generator 9 obtains from the diagnostic rule database 10 information about the diagnostic procedure to be performed. For example, a rule is stored in the diagnostic rules database 10, which prescribes a specific query interval. In accordance with this query rule, the status signal generator 9 receives raw status codes from the PLC systems 5, 6 via the data channels 7. In this way, the status signal generator 9 can read out specific operating data of the monitored system.
  • the status codes present in raw format are now identified, for example, with a standardized plain-text error message.
  • the error message can be generated in German, English, Chinese and / or another language.
  • the diagnostic rule database 10 may, for example, contain rules concerning the retrieval of further data.
  • the retrieval of real-time data from the PLC and / or the retrieval of statistical data, such as a 10-minute average may be prescribed from a database.
  • the status signal generator 9 then generates the complex status signal 11 from these data.
  • the status signal 11 then exists in a standardized form, which is independent of the read-out PLC 5, 6.
  • the status signal 11 is moreover, it is self-explanatory since it contains the complete information about the error message as well as the location of the error.
  • the status signal 11 generated in this way is now supplied via the status signal multiplexer 12 on the one hand to the status signal log database 13, where, for example, a plurality of successively generated
  • Status signals 11 can be stored.
  • the status signal is transmitted via the status signal multiplexer 12 under the intermediation of the Internet 4 to the subscriber-side status signal multiplexer 15 in the subscriber area 2. There it is transmitted to the monitoring clients 16, 17 in order to enable the monitoring of the distributed technical system.
  • a forwarding of the status signal 11 via the status signal multiplexer 15 to the status signal log database 16 in the subscriber area 2 additionally or alternatively to the storage in the system-side status signal log database 13 enables a central detection of the status signals over a time course.
  • a PLC system 5, 6 sends out a raw status code 19, which the status signal generator 9 receives in step 20.
  • the status signal generator 9 reads out the diagnosis rule database from the diagnostic rule database 10 in step 21. This results in the information as to how the status signal generator 9 is to convert a status code 19 received from one of the PLC systems 5, 6 into a status signal 11.
  • the diagnostic rule relates to a polling definition.
  • step 22 accordingly, upon reaching the Polling time point according to the read out in step 21 diagnostic rule of the signal generator 9 for querying certain operating data according to step 20 is activated.
  • step 23 the signal generator 9 queries the diagnosis rule database 10 in step 23 for further operating data which belong to the status code 19 and the transmitting SPS systems 5, 6.
  • the signal generator 9 receives real-time data from the PLC and in step 23 data from an external or internal data providing facility 3 to generate a status signal 11 in step 25.
  • the data from the data providing system 3 may comprise individual values, time series or spectra or else digital media contents such as images or sounds or also external prediction values.
  • the signal generator 9 sends the generated status signal 11 to the different receiving channels.
  • the status signal 11 is forwarded via the status signal multiplexer 12 and the Internet 4 to the monitoring clients 16, 17 in the subscriber area 2.
  • the status signal 11 is fed via the status signal multiplexer 12 into the system-side status signal log database 13.
  • a status signal 11 present in XML format will be explained with reference to FIG.
  • the XML tags used in the status signal 11 are occupied as follows:
  • the information required for identifying the control is contained in the form of the control system ID and the corresponding logical address. Furthermore, the operating data designations (name) are contained in plain text as temperature, wind speed and production, and the units are included. Finally, the logical address of an error file and a timestamp exist.
  • the status signal 11 thus generated by the status signal generator application with the method according to the invention is thus available in a standardized form that can be interpreted independently of technical details of the PLC 5, 6 emitting the status code. The status signal 11 is thus easily suitable for centralized data evaluation in the subscriber area 2.
  • FIG. 4 shows a diagnostic control system, which is stored in the system-specific diagnostic database 10, in XML format. 4 is delimited by the outer XML tag "diagnostics" in lines 01 and 026.
  • Lines 03 to 04 contain definitions of two status signals
  • line 6 is a so-called polling query, ie a periodic query of data, in the interval of 10 minutes, ie 600 seconds, defined for plants of the type "EOS”.
  • Lines 7 to 8 contain a list of the monitored PLC systems 5, 6 with the associated logical addresses.
  • the status signal of ID 5236 for the function "autocall” is defined with the possible operating data identifiers "2370", “6373", “7383".
  • the operating data identifiers each refer to specific ones Operating data which are polled by the PLC during the polling process and embedded in the status signal.
  • Lines 16 to 24 define the monitoring rule "event”, which transforms a received status code of a PLC from a status signal generator into a status signal, as defined in line 16 for all EOS PLC systems, in lines 17
  • a list of the monitored PLC control systems 5, 6 including a logical address is shown in Fig. 18.
  • a status signal "3333” is generated upon receipt of the status code "4444”
  • the status signal generator receives data from the PLC is interrogated with the operating data identifier "2370" and embedded in the status signal "3333” which it generates.
  • a time stamp is additionally generated for the status signal according to line 22.
  • line 23 it is determined that the status code contains a reference to an error file.
  • the rules 29 can be varied on the system side, without adjustments in the subscriber area 2 are required.
  • the change of the diagnostic framework can be done for example by users.
  • a change of the PLC systems 5, 6 is also not required.
  • the status signal multiplexer 12 can also distribute the status signal 11 to other status signal multiplexers, to a mail and / or SMS server.
  • the status signal including the operating data contained therein, can also be visualized on the monitoring clients 16, 17.
  • the communication between the PLC systems 5, 6, the status signal generator 9, the status signal multiplexer 12, the external data providing systems 3 and the monitoring client 16, 17 can be done via TCP / IP based web service technology.
  • SOAP Simple Object Access Protocol
  • a method for diagnostic monitoring of the operating state of a plurality of distributed at different locations technical equipment, in particular wind turbines is proposed, which generates standardized status signals 11 by conditioning the status codes that the PLC systems 5, 6 send out.
  • the standardized status signals are particularly well suited for integration in an evaluation by a subscriber area 2.
  • Procedure Request operating data from the diagnostic rule database and from the external data delivery system 24 Process step Receive operating data from the diagnostic rule database and from the external data delivery system

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

L'invention concerne un procédé pour contrôler par diagnostic l'état de service d'une pluralité d'installations (1) techniques réparties en différents endroits, en particulier d'installations éoliennes, par réception de codes d'état (19) édités par au moins un système de commande par programme enregistré (CPE) (56), disposé côté installation, un échange d'information avec des unités de télécontrôle (160, 170, 15, 16, 17) disposées à l'extérieur des installations (1) techniques, à distance de celles-ci et conçues séparément, ce qui permet l'intégration, même ultérieurement, d'installations à contrôler très diverses, indépendamment d'un fournisseur de services central, de façon flexible et en tolérant les erreurs. A cet effet, des données de service sont attribuées côté installation à chaque code d'état (19) pour l'analyse du code d'état (19); un signal d'état (11) complexe est généré ensuite à partir d'un ou de plusieurs codes d'état (19) et des données de service attribuées; et le signal d'état (11) complexe est transmis, dans le cadre de l'échange d'informations, aux unités de télécontrôle (160, 170, 15, 16, 17).
EP09778336A 2008-09-06 2009-09-04 Procédé de contrôle par diagnostic Withdrawn EP2335123A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008046156A DE102008046156A1 (de) 2008-09-06 2008-09-06 Verfahren zur diagnostischen Überwachung
PCT/EP2009/006425 WO2010025932A1 (fr) 2008-09-06 2009-09-04 Procédé de contrôle par diagnostic

Publications (1)

Publication Number Publication Date
EP2335123A1 true EP2335123A1 (fr) 2011-06-22

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ID=41307763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09778336A Withdrawn EP2335123A1 (fr) 2008-09-06 2009-09-04 Procédé de contrôle par diagnostic

Country Status (6)

Country Link
US (1) US20110307219A1 (fr)
EP (1) EP2335123A1 (fr)
CN (1) CN102144195A (fr)
CA (1) CA2736276A1 (fr)
DE (1) DE102008046156A1 (fr)
WO (1) WO2010025932A1 (fr)

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JPWO2019093031A1 (ja) * 2017-11-10 2020-09-24 新東工業株式会社 生型砂処理設備監視システム及び生型砂処理設備監視方法
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Also Published As

Publication number Publication date
DE102008046156A1 (de) 2010-03-11
CA2736276A1 (fr) 2010-03-11
CN102144195A (zh) 2011-08-03
US20110307219A1 (en) 2011-12-15
WO2010025932A1 (fr) 2010-03-11

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