EP3841647A1 - Procédé et dispositif permettant de déterminer l'état d'un réseau basse tension d'un système d'alimentation en énergie - Google Patents

Procédé et dispositif permettant de déterminer l'état d'un réseau basse tension d'un système d'alimentation en énergie

Info

Publication number
EP3841647A1
EP3841647A1 EP19778821.9A EP19778821A EP3841647A1 EP 3841647 A1 EP3841647 A1 EP 3841647A1 EP 19778821 A EP19778821 A EP 19778821A EP 3841647 A1 EP3841647 A1 EP 3841647A1
Authority
EP
European Patent Office
Prior art keywords
communication
network
topology
low
grid
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.)
Pending
Application number
EP19778821.9A
Other languages
German (de)
English (en)
Inventor
Peter Hanak
Nedzad SILJAK
Andreas Wöhrer
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP3841647A1 publication Critical patent/EP3841647A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/2513—Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • 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
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5433—Remote metering
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

Definitions

  • the invention relates to a method for determining the network state of a low-voltage network of a power supply system, comprising at least one gateway and a monitoring device, and the power supply system has power lines with respective smart meters, which form a network topology of the low-voltage network, and communication paths between smart meters and at least one gateway are generated by using powerline communication technology on the network lines, which together form a communication network with a communication topology, and properties of the communication, comprising routing information which defines the communication path between the at least one gateway and the respective Smartme
  • the network state of the low-voltage network is determined by comparing the network topology with the communication topology by the monitoring device, with a change in the structure of the communication topology compared to the structure of the network topology.
  • the gateway and smart meter can communicate with one another by means of at least one remote inquiry process, each comprising an inquiry telegram and a reply telegram.
  • the following process steps can be carried out: a) sending the query telegram of the remote query process to a first smart meter and at least one second smart meter, b) determining properties of the communication between the at least one gateway and the first smart meter and / or the at least one second smart meter as at least one communication parameter from at least one query telegram by the respective smart meter, c) transmitting a response telegram of the remote query process to a monitoring device of the energy supply system, which comprises the at least one communication parameter, d) detecting the communication topology of the first smart meter and the at least one second smartmeters from the at least one response telegram by the monitoring device, e) determining the network status of the low-voltage network from the at least one communication parameter, the network topology and the communication topology by the monitoring device.
  • the invention further relates to a device for determining the network state of a low-voltage network of a power supply system, comprising at least one gateway and a monitoring device, and the power supply system having power lines with respective smart meters, which form a network topology of the low-voltage network, and the power supply system is set up for this: a) To create communication paths between smart meters and at least one gateway using powerline communication technology on the network lines, which together form a communication network with a communication topology, and b) properties of the communication, comprising routing information, which describe the communication path between the at least one gateway and the respective smart meter, as at least one communication parameter by the respective smart meter, and to determine the communication topology by the monitoring device, and c) to determine the network state of the low-voltage network from a comparison of the network topology with the communication topology by the monitoring device, a change in the structure of the communication topology compared to the structure of the network topology being analyzed.
  • Low-voltage networks are nowadays partly old and prone to failure, which can lead to undesired failures in the supply of consumers, as well as to costly maintenance and repair work on the power lines.
  • US 2014/278162 A1 and EP 2 608 417 A2 each disclose methods for determining the network state from various communication parameters, which were recorded by measurements based on powerline communication (PLC) via network lines.
  • PLC powerline communication
  • the measured values determined here may be subject to inaccuracies or the superposition of several unfavorable effects on the respective communication, so that the meaningfulness of a measurement is not always high and therefore a network fault is not always determined with sufficient reliability.
  • the object is achieved by a method of the type mentioned in that, when the structure of the communication topology is changed, a comparison is made with weather data, in which a temporarily changed communication topology with geographic and temporally assigned weather data, which is preferably transmitted by the monitoring device via data interface are received, connected and this is taken into account when determining the network status, preferably from the communication topology.
  • the weather data can be received by the monitoring device via a corresponding data interface, for example from online services for weather forecasting and / or weather data acquisition or corresponding sensors which are connected to the monitoring device.
  • intelligent electricity meters so-called smart meters
  • Such low-voltage networks are referred to as intelligent low-voltage networks or smart grids, in which, for example, a simple and inexpensive remote reading of the meter reading of an intelligent electricity meter is possible.
  • a measuring method for determining communication parameters can be carried out with a smart meter or also with other measuring devices with a corresponding communication interface for communicating with a smart meter, for example with a measuring device for determining line parameters. Consequently, the term smart meter also includes other suitable measuring devices and the energy supply system can also include combinations of smart meters and other measuring devices.
  • Information from the individual smart meters or the analysis of the data transmission quality or the topology of the data transmission network from remote access processes should be used to estimate the network status of the low-voltage network. It is also possible to draw conclusions about the current network status, for example switch settings in the low-voltage network, this information also being sent to a SCADA system (Supervisory Control and Data Acquisition). sition) can be forwarded. Unsupported networks could be automatically recognized by appropriate algorithms within the monitoring device.
  • SCADA system Supervisory Control and Data Acquisition
  • the method according to the invention makes it possible for the supply status of individual, several or even all network lines in the low-voltage network to be determined in a targeted manner and, if appropriate, appropriate measures to be taken.
  • the method according to the invention is extremely easy to integrate even in existing smart grids.
  • the network status can be determined in a simple manner by means of remote queries from a central monitoring device, which has a computing unit and a memory, and corresponding maintenance, servicing and repair work before the emergence of a potential partial o - the total power failure can be planned and carried out. Material fatigue or wear of transformers, switches or lines or parts thereof can be detected with a certain probability in advance.
  • the network status is determined by analyzing a change in the structure of a communication topology compared to the structure of a network topology.
  • communication parameters that change over time can give an indication of a defect or aging in a line, a switch or the like.
  • the change over time can be observed and analyzed over a short period as well as over a long period of time.
  • weather influences, seasonal or working time influences, or also operational influences can be compared with a change in the structure of a communication topology by associating a temporarily changed communication topology with the geographically and temporally assigned weather data provided.
  • the weather data can, for example, be provided by databases or online services using a database and stored in a memory of the monitoring device.
  • a time and / or a time span, as well as a location and / or an area are linked for each weather data record.
  • Each weather data record can be correlated or compared with a segment of the network topology and communication topology.
  • Each weather data record can relate to future (for example, predicted by weather models with artificial intelligence), current or past (for example, recorded and recorded by sensors) times.
  • the method can also use a combination of several weather data sets in order to carry out an analysis of the network status based on the communication topology. In a development of the invention, it is provided that more than one network line or more than one communication path is correlated with corresponding weather data. This can further improve the reliability of the method.
  • an associated location can be determined in a simple manner for a segment of a communication path that has been determined to be faulty, for example by looking at maps or maintenance tables.
  • combinations of several communication parameters of different network lines can also give an indication of a fault, in particular a time history of changes in the communication parameters.
  • the object of the invention is also achieved by a device of the The type mentioned above is solved in that when the structure of the communication topology is changed, it is compared with weather data, in that a temporarily changed communication topology is associated with geographically and temporally assigned weather data, which are received by the monitoring device via a data interface, and this is taken into account when determining the network state, preferably from the communication topology.
  • the at least one communication parameter can be from a link quality index parameter of the respective Smartme
  • the link quality index parameter can be determined from the signal-to-noise ratio of a remote inquiry process.
  • the at least one communication parameter and / or the communication topology can be determined from routing information which describes the communication path between the at least one gate way and the respective smart meter.
  • the at least one communication parameter can be determined from the duration of the time difference between sending the at least one query telegram and receiving the associated response telegram of a respective remote query process.
  • a first remote query process and at least one second remote query process can be carried out repeatedly, with the first remote query process and the at least one second Remote inquiry process a change in the communication topology and / or the network topology can be determined, from which the network state is determined.
  • the network topology is detected by the monitoring device. This enables a configuration of the low-voltage network to be stored in a simple manner for use in the method according to the invention. It is advantageous if the network topology is stored in the form of a list in a data storage device of the monitoring device and can be changed.
  • the query telegram comprises a counter status query or an operating status query of the respective smart meter.
  • the at least one communication parameter can be determined in a particularly simple manner.
  • the determination of the at least one communication parameter is carried out by querying the meter reading or querying the operating state of the respective smart meter, thereby reducing the communication.
  • PLC communication on power networks often has a very low data transfer rate.
  • La is a block diagram of a first gamericsbei a low-voltage network
  • FIG. 1b shows a schematic representation of a network topology of the low-voltage network according to FIG.
  • FIG. 1c shows a schematic representation of a communication topology of the low-voltage network according to FIG. 2a is a block diagram of a second exemplary embodiment of a low-voltage network
  • FIG. 2b is a schematic representation of a network topology of the low-voltage network according to FIG. 2a,
  • FIG. 2c is a schematic representation of a communication topology of the low-voltage network according to FIG. 2a,
  • 3a is a block diagram of a third exemplary embodiment of a low-voltage network
  • 3b is a schematic representation of a network topology of the low-voltage network according to FIG. 3a,
  • 3c is a schematic representation of a communication topology of the low-voltage network according to FIG. 3a,
  • Fig. 4 is a schematic representation with an embodiment
  • FIGS. La-lc is a schematic representation for a remote query operation with telegrams according to FIGS. La-lc,
  • 5b is a schematic representation of a further exemplary embodiment for a remote inquiry process with telegrams
  • 5c is a schematic illustration of a further exemplary embodiment for a remote inquiry process with telegrams
  • Fig. 5d is a schematic representation of another exemplary embodiment from a remote inquiry process with telegrams.
  • the exemplary embodiments show important parts of the invention, it being clear that further components may be necessary for the method and the device according to the invention, such as electrical end consumers, generally known infrastructure for operating a low-voltage network, such as transformers or circuit breakers, but also control and data processing devices. For a better overview, these components are not shown.
  • Fig. La is a first embodiment of a device for determining the network state of a low voltage network 1 of a power supply system 2 shows schematically ge.
  • the energy supply system 2 has a first network line 111 with a first smart meter 101 and a plurality of second network lines 112-119 with associated second smart meters 102-109. Electrical consumers can be connected to the smart meters 101-109.
  • the power consumption of the consumer can be measured by remote reading from a remote data processing device, or the consumer can be connected to the low-voltage network 1 or separated from the network by remote control from a remote control device.
  • the first power line 111 and the second power lines 112-119 form a network topology 110 of the low-voltage network 1, which is shown separately in FIG. 1b.
  • the power supply system 2 also has a communication system with a gateway 3 and a smart grid server 5.
  • the smart grid server 5 supports the electronic operation of the energy supply system 2, that is to say, for example, by electronic remote reading of the meter values of the individual smart meters 101-109 or by the general control of the smart meters, such as switching on and off a single power line 111-119.
  • the monitoring device 4 can be connected to the smart grid server 5, wherein communication via the gateway 3 can take place by means of the smart grid server 5. This can simplify the system.
  • the gateway 3 can, for example, be an IP router based on powerline communication (PLC) technology, the communication taking place via the electrical supply network of the low voltage network 1.
  • PLC powerline communication
  • the smart meters 101-109 are connected to the gateway 3 in a star or tree shape by the power lines 111-119.
  • the slave smart meter 106-108 with the master smart meter 102 or the secondary network line 119 of the slave smart meter 109 with the master Smartmeter 105 connected.
  • smart meters are in the first hierarchical level of a tree, i.e. in a star-shaped Order meant. In other words, those that can communicate directly with the gateway 3.
  • Slave smart meters 106-109 refer to smart meters in the second hierarchical level of the tree, but in practice many more hierarchical levels can be used in trees. In other words, those who cannot communicate directly with the gateway 3, but only via a master smart meter 102, 105.
  • Communication between the gateway 3 and the slave smart meter 109 thus takes place by routing via the master smart meter 105, that is to say via the power lines 115 and 119.
  • the communication system is set up to connect the first smart meter 101 and the second smart meter 102-109 to the gateway 3 via a respective communication path and to communicate by means of at least one remote inquiry process 10, 20, 30, 40, 50, 60.
  • the communication system is based on Powerline Communication (PLC) technology.
  • the gateway 3 can be connected to the smart grid server 5 via a wired or wireless broadband data line.
  • the communication paths form a communication network with a communication topology 120, which is shown separately in FIG. 1c.
  • the network topology 110 corresponds to the communication topology 120.
  • the remote query processes 10, 20, 30, 40, 50, 60 each include a query telegram 11, 21, 31, 41, 51, 61 and a response telegram 12, 22, 32, 42, 52.
  • the query Telegram 11, 21, 31, 41, 51, 61 also has a meter reading query or an operating status query of the respective smart meter 101-109. Examples of remote inquiry processes 10, 20, 30, 40, 50, 60 are shown in FIGS. 5a-5d.
  • FIG. 2a is a second embodiment of a device for determining the network state of a low-voltage network 1 of a power supply system 2 shows schematically ge.
  • a network topology 210 with network lines 211-219 is identical to the network topology 110 of FIG. 1 a, as can be seen in FIG. 2 b.
  • a communication topology 220 differs from the communication topology 120.
  • the communication path 125 to the smart meter 105 from the first exemplary embodiment is disturbed in the second exemplary embodiment. Instead, the smart meter 105 communicates via the communication path 224 and 225.
  • the fault can be caused, for example, by aging of components of the low-voltage network, weather influences or seasonal influences. Furthermore, malfunctions due to operational or load-dependent influences are possible, which occur, for example, during working hours and not on weekends.
  • Operational influences include maintenance and repair work, the replacement of parts of the low-voltage network, the switching over of power lines, for example from alternative transformers or lines.
  • Load-dependent influences include the switching on of consumers with high interference voltages at specific frequencies, which can be coupled into the low-voltage network and the quality of the communication network. can adversely affect zes, as well as the addition and disconnection of large consumers.
  • the quality of the communication network can be influenced, for example, by changing the signal transit times (round trip), the number of tree levels in a communication topology (number of hops in a connection) or a poor signal-to-noise ratio.
  • the communication path 128 to the smart meter 105 of the first exemplary embodiment could not be established, but rather the smart meter 108 communicates in the second exemplary embodiment via the communication paths 224, 225 and 228.
  • the network topology 210 of the second embodiment with the network lines 211-219 corresponds structurally to the network topology 110 of the first embodiment.
  • the tree-like communication topology 220 of the second exemplary embodiment is shown in FIG. 2c.
  • An additional level can be seen in the communication topology 220 compared to the communication topology 120, which is caused by the communication path 225.
  • Fig. 3a is a third embodiment of a device for determining the network state of a low-voltage network 1 of a power supply system 2 shows schematically ge.
  • a network topology 310 with network lines 311-319 to network topology 110 of FIG. La differs in that network line 125 to smart meter 105 of the first exemplary embodiment in FIG. La is interrupted. Subsequently, the power line 119 to the smart meter 109 is also interrupted.
  • the third exemplary embodiment in FIG. 3a has only power lines 311-314 and 316-318.
  • a communication topology 320 differs significantly from the communication topologies 120 and 220.
  • the smart meter 109 is connected to the smart meter 108 via a communication path 319, in spite of a faulty network line.
  • the smart meter 109 can thus communicate with the gateway 4 via the communication paths 322, 328 and 329.
  • the network topology 310 of the third exemplary embodiment thus differs structurally from the network topologies 110 and 210.
  • the tree-like communication topology 320 of the third exemplary embodiment is shown in FIG. 3c.
  • An additional level can be seen in the communication topology 220 compared to the communication topology 120, which is caused by the communication path 329.
  • the energy supply system 2 also has a monitoring device 4 with a computing unit and a memory, which is connected to the at least one gateway 3.
  • the energy supply system 2 is set up to carry out the following method steps of a method 500: a) Sending 510 a query telegram 11, 21, 31, 41, 51, 61 of a remote query process 10, 20, 30, 40, 50, 60 to the first smart meter 101 and the at least one second
  • Smart meter 102-109 b) determining 520 properties of the communication between the at least one gateway 3 and the first smart meter 101 and / or the at least one second Smart meter 102-109 as at least one communication parameter from at least one query telegram 11, 21, 31, 41, 51, 61 by the respective smart meter 101-109, c) transmitting 530 a response telegram 12, 22, 32, 42, 52 of the remote query process 10, 20, 30, 40, 50, 60 to the monitoring device 4, which comprises the at least one communication parameter, d) acquiring 540 the communication topology 120, 220, 320 of the first smart meter 101 and the at least one second Smart meters 102-109 from the at least one response telegram 12, 22, 32, 42, 52 by the monitoring device 4, e) determining 550 the network state of the low-voltage network 1 from the at least one communication parameter 6, the network topology 110, 210, 310 and the communication topology 120, 220, 320 by the monitoring device 4.
  • the method 500 is shown separately in FIG. 4. In this example, the method steps are carried out by the monitoring device 4, but can also be carried out by other suitable system parts if no special monitoring device should be provided and only a logical assignment of system parts seems to make sense.
  • 5a shows a counter reading query for the remote query processes 10, 20, 30.
  • a meter reading query “MeterRead” from the smart meter 109 takes place in the query telegram 11, which delivers a return parameter set in the response telegram.
  • different response telegrams 12, 22, 32 can be sent.
  • the response telegram can also be configured directly in the query telegram. This aspect is not shown in the figure.
  • the at least one communication parameter in the form of a parameter set can be determined from a link quality index parameter LQI, which the respective smart meter 101-109 can determine.
  • corresponding parameters can be determined in the gateway 3, stored there and called up by the monitoring device 4.
  • the link quality index parameter LQI can be determined from the signal-to-noise ratio at least from parts of at least one remote inquiry process 10, 20, 30, 40, 50, 60.
  • the at least one communication parameter and / or the communication topology 120 can include routing information RI.
  • the routing information RI describes the communication path between the gateway 3 and the respective smart meter 101-109 and can be determined by the respective smart meter 101-109.
  • the smart meter 109 is configured such that the return parameter set in the respective response telegram 12, 22, 32 provides routing information RI via which communication paths the communication with the smart meter 109 took place.
  • the respective response telegram 12, 22, 32 can be enriched by the gateway 3 with the routing information RI, or the gate way 3 can send a separate query of smart meter parameters to a smart meter, and the respective response telegram 12 , 22, 32 from the routing information RI, which were determined by the gateway 3, and put together the smart meter parameters from the separate query.
  • the parameter set contains the counter number 109, the counter value 500.0 kWh and the routing information RI.
  • communication took place via communication paths 125 and 129.
  • the parameter set contains the counter number 109, the counter value 500.0 kWh and the routing information RI in the response telegram 22.
  • communication took place via communication paths 224, 225 and 229.
  • the parameter set contains the counter number 109, the counter value 500.0 kWh and the routing information RI in the response telegram 32.
  • communication took place via communication paths 322, 328 and 329.
  • 5b shows a counter reading query for the remote query process 40.
  • a meter reading query “MeterRead” from the smart meter 109 takes place in the inquiry telegram 41, which delivers a return parameter set in the reply telegram 42.
  • the smart meter 109 is configured such that the return parameter set in the response telegram 42 supplies a link quality index value LQI via which communication paths the communication with the smart meter 109 took place.
  • the parameter set contains the counter number 109, the counter value 500.0 kWh and the LQI value 0.47.
  • 5c shows an operating status query for the remote query process 50.
  • an inquiry of the operating status “ping” of the smart meter 109 takes place in the inquiry telegram 51, which delivers a return parameter set in the answer telegram 52.
  • the parameter set contains the counter number 109 and the number in the answer telegram 52 Routing information RI.
  • communication took place via communication paths 122 and 126.
  • the at least one communication parameter can also be determined from the duration of the time difference between sending T_START of the query telegram 51 and receiving T_STOP of the associated response telegram 52 of the remote query process 50.
  • FIG. 5d shows an example of a further remote inquiry process 60.
  • the method steps a) to e) can also be carried out repeatedly, for example in the form of a first remote inquiry process and a second remote inquiry process.
  • a change in the communication topology 120, 220, 320 and / or the network topology 110, 210, 310 from which the network status can be determined can be determined from the first remote inquiry process and the second remote inquiry process.
  • query telegram 61 can be transmitted repeatedly.
  • a missing response telegram in the remote inquiry process 60 can be interpreted as a transmission error in the respective network line and the remote inquiry process 60 can be regarded as complete.
  • the network topology 110 or its changes can be recorded manually by a user in the monitoring device 4, or, for example, also via a corresponding data interface with other devices for maintaining, monitoring or controlling the low-voltage network 2.
  • the storage of the network topology 110 can follow it in the form of a list in a data memory of the monitoring device 4.
  • the determination of the supply status of the low-voltage network can be done in different ways, as explained in more detail below.
  • the communication parameters can also be combinations of the communication parameters.
  • other communication parameters which are not detailed, can also be used for the method according to the invention, which describe the transmission quality of the data communication of a remote inquiry process between a smart meter and the gateway via network lines.
  • the change in the structure of a communication topology 120, 220, 320 is compared with the determined weather influences or seasonal influences, in that a temporarily changed communication topology is associated with geographically and temporally assigned weather data, and this when determining the network status from the communication topology 120 , 220, 320 is taken into account.
  • T_STOP receive timestamp of a reply

Abstract

L'invention concerne un procédé permettant de déterminer l'état d'un réseau basse tension d'un système d'alimentation en énergie (2) comprenant une passerelle (3) et un dispositif de surveillance (4). Le système d'alimentation en énergie (2) présente des lignes de réseau (311-319) munies respectivement de compteurs intelligents (101-109), lesquelles forment une topologie de réseau du réseau d'alimentation (1) basse tension, et des trajets de communication entre les compteurs intelligents (101-109) et la passerelle (3) sont produits sur les lignes de réseau (311-319) par la technologie des courants porteurs en ligne et forment ensemble un réseau de communication présentant une topologie de communication. Des caractéristiques de la communication qui comprennent une information de routage (RI) et décrivent le trajet de communication entre la passerelle (3) et le compteur intelligent (101-109) concerné sont déterminées par le compteur intelligent (101-109) concerné sous la forme d'au moins un paramètre de communication à partir duquel est déterminée la topologie de communication. L'état du réseau basse tension (1) est déterminé par le dispositif de surveillance (4) à partir d'une comparaison entre la topologie de réseau et la topologie de communication. Un changement de la structure de la topologie de communication par rapport à la structure de la topologie de réseau est analysé et, en cas de changement de la structure de la topologie de communication, un recoupement est effectué avec des données météorologiques et pris en compte lors de la détermination de l'état du réseau.
EP19778821.9A 2018-09-26 2019-09-11 Procédé et dispositif permettant de déterminer l'état d'un réseau basse tension d'un système d'alimentation en énergie Pending EP3841647A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18196785.2A EP3629438A1 (fr) 2018-09-26 2018-09-26 Procédé et dispositif de détermination de l'état de réseau d'un réseau basse tension d'un système d'alimentation en énergie
PCT/EP2019/074200 WO2020064331A1 (fr) 2018-09-26 2019-09-11 Procédé et dispositif permettant de déterminer l'état d'un réseau basse tension d'un système d'alimentation en énergie

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EP3841647A1 true EP3841647A1 (fr) 2021-06-30

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EP18196785.2A Withdrawn EP3629438A1 (fr) 2018-09-26 2018-09-26 Procédé et dispositif de détermination de l'état de réseau d'un réseau basse tension d'un système d'alimentation en énergie
EP19778821.9A Pending EP3841647A1 (fr) 2018-09-26 2019-09-11 Procédé et dispositif permettant de déterminer l'état d'un réseau basse tension d'un système d'alimentation en énergie

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EP18196785.2A Withdrawn EP3629438A1 (fr) 2018-09-26 2018-09-26 Procédé et dispositif de détermination de l'état de réseau d'un réseau basse tension d'un système d'alimentation en énergie

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CN112231872B (zh) * 2020-10-13 2024-04-26 国网安徽省电力有限公司安庆供电公司 基于人工智能的输变电设备工作票拓扑防误方法
CN117350707A (zh) * 2023-10-12 2024-01-05 湖北华中电力科技开发有限责任公司 一种基于电力设备信号实时分析的配电网故障主动抢修工单精准生成方法及系统

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EP2608417B1 (fr) * 2011-12-23 2020-07-22 Power Plus Communications AG Procédé et système de surveillance de l'état d'un réseau d'alimentation
US20140278162A1 (en) * 2013-03-15 2014-09-18 Echelon Corporation Detecting and locating power outages via low voltage grid mapping
CA2964365A1 (fr) * 2014-10-30 2016-05-06 Jerritt Harold HANSELL Systeme et procedes d'allocation d'intervalles de temps et de resolution de conflits d'intervalles de temps dans un reseau de distribution electrique

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