CN117154932A - Low voltage station area - Google Patents

Low voltage station area Download PDF

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Publication number
CN117154932A
CN117154932A CN202311094915.9A CN202311094915A CN117154932A CN 117154932 A CN117154932 A CN 117154932A CN 202311094915 A CN202311094915 A CN 202311094915A CN 117154932 A CN117154932 A CN 117154932A
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CN
China
Prior art keywords
meter
data
intelligent
box
ammeter
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Pending
Application number
CN202311094915.9A
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Chinese (zh)
Inventor
苏守志
邹连明
冯瑞瑞
王维旭
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Ningbo Sanxing Medical and Electric Co Ltd
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Ningbo Sanxing Medical and Electric Co Ltd
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Application filed by Ningbo Sanxing Medical and Electric Co Ltd filed Critical Ningbo Sanxing Medical and Electric Co Ltd
Priority to CN202311094915.9A priority Critical patent/CN117154932A/en
Publication of CN117154932A publication Critical patent/CN117154932A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • 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
    • H02J13/00016—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 using a wired telecommunication network or a data transmission bus

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • Computing Systems (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The embodiment of the application provides a low-voltage transformer area, and relates to the technical field of electric power. The first intelligent measuring switch in the low-voltage station area is used for acquiring the ammeter data of each intelligent ammeter, carrying out ammeter data analysis according to the ammeter data, acquiring ammeter data analysis results, and sending the ammeter data, the ammeter data analysis results and the ammeter box data to the branch box; the second intelligent measuring switch is used for carrying out table box data analysis according to the table box data of each table box to obtain table box data analysis results, and sending the table box data, the table box data analysis results, the ammeter data analysis results and the branch box data to the energy controller; the energy controller is used for carrying out data summarization according to the branch box data, the meter box data and the ammeter data respectively, and carrying out data analysis of the station area according to the ammeter data analysis result and/or the meter box data analysis result, so that the hardware cost of the whole low-voltage station area can be reduced.

Description

Low voltage station area
Technical Field
The application relates to the technical field of electric power, in particular to a low-voltage station area.
Background
The low-voltage transformer area refers to a power supply range or area of a transformer, and includes a link from the transformer to the user side, which is directly oriented to the power customer. At present, each branch box, each meter box and each ammeter under a low-voltage transformer area can acquire effective data only by additionally arranging a loop current short-circuit trigger and an HPLC (High-speed Powerline Carrier ) communication module, so that the problem of High hardware cost exists.
Disclosure of Invention
In view of the above, the present application is directed to a low-voltage transformer area to solve the problem of high hardware cost in the prior art.
In order to achieve the above object, the technical scheme adopted by the embodiment of the application is as follows:
in a first aspect, the application provides a low-voltage station area, which comprises an energy controller, a plurality of branch boxes, a plurality of meter boxes and a plurality of intelligent electric meters, wherein a first intelligent measuring switch is arranged in each meter box, a second intelligent measuring switch is arranged in each branch box, each meter box is connected with the plurality of intelligent electric meters through the first intelligent measuring switch, each branch box is connected with the plurality of meter boxes through the second intelligent measuring switch, and the energy controller is connected with the plurality of branch boxes;
the first intelligent measuring switch is used for acquiring the ammeter data of each intelligent ammeter, carrying out ammeter data analysis according to the ammeter data to acquire ammeter data analysis results, and sending the ammeter data of each intelligent ammeter, the ammeter data analysis results and the ammeter box data of the ammeter box to the branch box;
The second intelligent measuring switch is used for carrying out meter box data analysis according to meter box data of each meter box to obtain meter box data analysis results, and sending the meter box data of each meter box, the meter box data analysis results, the ammeter data of each intelligent ammeter, the ammeter data analysis results and branch box data of the branch box to the energy controller;
the energy controller is used for carrying out data summarization according to the branch box data of each branch box, the meter box data of each meter box and the ammeter data of each intelligent ammeter respectively, and carrying out data analysis of a platform area according to the ammeter data analysis result and/or the meter box data analysis result.
In an alternative embodiment, the meter data analysis result includes a first branch topology structure between a meter box and each of the smart meters, and the meter box data analysis result includes a second branch topology structure between the branch box and each of the meter boxes;
the first intelligent measuring switch is further used for analyzing the topological structure between the meter box and the intelligent electric meter according to the acquired electric meter data to obtain a first branch topological structure between the meter box and each intelligent electric meter;
The second intelligent measuring switch is further used for analyzing the topological structure between the branch box and the meter box according to the acquired meter box data to obtain a second branch line topological structure between the branch box and each meter box;
the energy controller is further configured to analyze the topology structure of the low-voltage transformer area according to the first branch topology structure, the second branch topology structure, and the connection relationship between the energy controller and each branch box, so as to obtain a transformer area topology structure corresponding to the low-voltage transformer area.
In an alternative embodiment, the bin data comprises bin metering data;
the second intelligent measuring switch is further used for analyzing line loss between the branch boxes and the meter boxes according to meter box metering data of the meter boxes to obtain line loss analysis results between the meter boxes and the branch boxes;
and the energy controller is also used for counting the line loss analysis results sent by the branch boxes to obtain the line loss analysis results of the low-voltage transformer area.
In an alternative embodiment, the smart meter includes a plurality of competitive upper reports and a plurality of proactive upper reports;
The first intelligent measuring switch is further used for broadcasting a competition signal to each competition upper report at each preset time interval so as to determine whether to report first ammeter data of the competition upper report under the condition that each competition upper report receives the competition signal;
the first intelligent measuring switch is further used for acquiring second ammeter data actively reported by each active report and first ammeter data reported by any competitive report at each interval of the preset time length.
In an optional implementation manner, the first intelligent measurement switch is respectively connected with each intelligent ammeter through an RS485 bus, each intelligent ammeter corresponds to one address bit number, and the corresponding relation between each address bit number and the backoff delay time is stored in each intelligent ammeter;
the contention resolution report is configured to determine a corresponding target backoff delay time according to the address number of the contention resolution report and the corresponding relationship when the contention resolution signal is received, determine whether the RS485 bus receives valid messages reported by other contention resolution reports within the target backoff delay time, and determine to report the first electric meter data when it is determined that the RS485 bus does not receive valid messages reported by other contention resolution reports.
In an optional embodiment, the second intelligent measurement switch is further configured to receive a first service clock and a first network clock sent by the energy controller, perform clock synchronization on a second service clock and a second network clock of the branch box according to the first service clock and the first network clock, and send the second service clock and the second network clock after clock synchronization to the first intelligent measurement switch;
the first intelligent measurement switch is further configured to perform clock synchronization on a third service clock and a third network clock of the meter box according to the second service clock and the second network clock after clock synchronization, and broadcast the third service clock and the third network clock after clock synchronization to each intelligent electric meter, so that each intelligent electric meter performs clock synchronization on a fourth service clock and a fourth network clock of the intelligent electric meter according to the third service clock and the third network clock after clock synchronization.
In an optional embodiment, the first intelligent measurement switch is further configured to determine, when an abnormal smart meter with abnormal communication is detected, an abnormal state of the abnormal smart meter according to a first current value of the first intelligent measurement switch and a second current value of the smart meter with normal communication; the abnormal intelligent electric meter is an intelligent electric meter with continuous preset times of communication failure.
In an alternative embodiment, the abnormal state includes a communication disconnection state and an ammeter disconnection state;
the first intelligent measuring switch is further used for determining that the abnormal intelligent ammeter is in a communication disconnection state under the condition that the first current value is larger than the second current value;
the first intelligent measuring switch is further used for determining that the abnormal intelligent ammeter is in an ammeter power-down state under the condition that the first current value is equal to the second current value.
In an alternative embodiment, the meter data includes real-time phase current and real-time power of the smart meter;
the first intelligent measuring switch is further used for carrying out phase identification on each intelligent ammeter according to the real-time phase current and the real-time power of each intelligent ammeter.
In an alternative embodiment, the meter data includes meter metering data;
the first intelligent measuring switch is further used for carrying out non-invasive load identification on each intelligent electric meter according to electric meter measurement data of each intelligent electric meter at each moment.
The low-voltage station area provided by the embodiment of the application comprises an energy controller, a plurality of branch boxes, a plurality of meter boxes and a plurality of intelligent electric meters, wherein each meter box is provided with a first intelligent measuring switch, each branch box is provided with a second intelligent measuring switch, each meter box can be connected with the plurality of intelligent electric meters through the first intelligent measuring switch, and each branch box can be connected with the plurality of meter boxes through the second intelligent measuring switch. Under the condition, in the low-voltage station area, each meter box can acquire meter data of each intelligent meter connected with the meter box through the first intelligent measuring switch and conduct corresponding data analysis, each branch box can acquire meter box data of each meter box connected with the meter box through the second intelligent measuring switch and conduct corresponding data analysis, meanwhile, each meter box can report acquired data to the energy controller through the first intelligent measuring switch, each branch box can report acquired data to the energy controller through the second intelligent measuring switch, and the energy controller is used for data summarizing and data analysis of the whole low-voltage station area, so that loop current short-circuit triggers and HPLC communication modules are not required to be arranged in each meter box, each branch box and each intelligent meter, and hardware cost of the whole low-voltage station area can be reduced.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a block schematic diagram of a low voltage bay in the prior art;
fig. 2 shows a block schematic diagram of a low-voltage station area 10 according to an embodiment of the present application;
FIG. 3 illustrates an example diagram of a first smart metering switch acquiring first meter data and second meter data; fig. 4 shows a traffic schematic diagram of the first intelligent measurement switch.
Icon: 10-a low-voltage station area; 100-an energy controller; 110-a branch box; 111-a second intelligent measurement switch; 120-meter box; 121-a first intelligent measurement switch; 130-smart meter.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present application.
It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The low-voltage transformer area refers to a power supply range or area of a transformer, and includes a link from the transformer to the user side, which is directly oriented to the power customer.
Fig. 1 is a block diagram of a low voltage area in the prior art, please refer to fig. 1. At present, each branch box, each meter box and each ammeter under the transformer of the low-voltage transformer area can acquire effective data only by additionally arranging a loop current short-circuit trigger and an HPLC communication module. In the prior art, physical topology identification is actively triggered by a high-speed broadband transmission technology, so that loop current short-circuit triggers of all branch boxes under a low-voltage transformer area are polled and triggered, and then downlink loop current short-circuit triggers are polled in sequence, so that effective data in the intelligent ammeter are obtained through an algorithm.
However, in this scheme, no matter the branch box, the meter box or the smart electric meter, the loop current short-circuit trigger and the HPLC communication module need to be additionally installed, so the hardware cost is too high, which makes it difficult to comprehensively popularize and apply, and under this structure, the loop instantaneous short-circuit concentrated in a certain period of time can cause a certain current interference impact and leakage false alarm risk to the stock circuit.
In addition, such low voltage transformer areas have extremely high requirements on network stability and circuit current stability, and if an unstable condition occurs, a certain device or a plurality of local devices are disordered, so that the topology of the whole low voltage transformer area is invalid.
Based on this, the embodiment of the application provides a low-voltage station area to solve the above problems.
The low-voltage area provided by the embodiment of the application is exemplarily described below with reference to a block diagram. Specifically, fig. 2 is a block schematic diagram of the low-voltage transformer area 10 according to an embodiment of the present application, referring to fig. 2, the low-voltage transformer area 10 includes an energy controller 100, a plurality of branch boxes 110, a plurality of meter boxes 120, and a plurality of smart meters 130.
Optionally, a first intelligent measurement switch 121 is provided in each meter box 120, and a second intelligent measurement switch 111 is provided in each branch box 110.
Optionally, the first intelligent measurement switch 121 and the second intelligent measurement switch 111 are both provided with communication modules, so that each meter box 120 may be connected to the plurality of smart meters 130 through the first intelligent measurement switch, and each branch box 110 may be connected to the plurality of meter boxes 120 through the second intelligent measurement switch 111.
Optionally, the energy controller 100 is connected to a plurality of branch boxes 110.
Alternatively, the first intelligent measurement switch 121 may be configured to obtain the meter data of each intelligent meter, perform meter data analysis according to the meter data, obtain the meter data analysis result, and send the meter data of each intelligent meter, the meter data analysis result, and the meter box data of the meter box to the branch box.
Alternatively, the electricity meter data may include user electricity consumption data, basic operation data of the smart meter, and the like. It will be appreciated that the manner in which the first intelligent metering switch is obtained may be different for different meter data.
Alternatively, the analysis of the electric meter data may be to analyze the electricity consumption condition of the user or the operation condition of the smart electric meter according to the electric meter data, or to analyze the relationship between the smart electric meter and the meter box according to the electric meter data.
Optionally, the first intelligent measurement switch may further store the meter data and the data analysis result of each intelligent meter locally.
Optionally, the first intelligent measurement switch may further collect meter box data and send the meter box data to the branch box. Optionally, the second intelligent measurement switch 111 may be configured to perform a case data analysis according to case data of each case, obtain case data analysis results, and send the case data of each case, the case data analysis results, the ammeter data of each intelligent ammeter, the ammeter data analysis results, and the branch case data of the branch case to the energy controller;
Alternatively, the case data may be case basic data acquired by a case, or the like. It may be appreciated that the manner in which the second intelligent measurement switch is obtained may be different for different meter box data.
Alternatively, the meter box base data may include meter box temperature, meter box humidity, meter box power distribution data monitoring, and the like.
Optionally, the second intelligent measurement switch may further store the data sent by each meter box and the analysis result of the meter box locally.
Optionally, the second intelligent measurement switch may perform table box data analysis according to table box data, for example, a running condition of a table box, a relationship between the table box and a branch box, and the like. In addition, the second intelligent measuring switch can also collect branch box data.
Alternatively, the branch box data may include branch box base data acquired by the branch box, metering data of the branch box, and the like.
Optionally, the branch box base data may include branch box temperature, branch box humidity, branch box distribution data monitoring, and the like.
Alternatively, the energy controller 100 may be configured to perform data summarization according to the branch box data of each branch box, the meter box data of each meter box, and the meter data of each smart meter, and perform the data analysis of the station area according to the meter data analysis result and/or the meter box data analysis result.
Optionally, the energy controller may store the data sent by the branch boxes locally, and perform branch box data statistics according to the branch box data of each branch box, perform table box data statistics according to the table box data of each table box, and perform electric meter data statistics according to the electric meter data of each intelligent electric meter.
Optionally, the energy controller may also collect corresponding base data for the area, such as energy controller temperature, energy controller humidity, power distribution monitoring data, etc.
Optionally, the energy controller may perform the data analysis of the transformer area by combining the analysis result of the ammeter data of the first intelligent measurement switch and/or the analysis result of the meter box data of the second intelligent measurement switch, so as to obtain the working condition of the low-voltage transformer area.
The low-voltage station area provided by the embodiment of the application comprises an energy controller, a plurality of branch boxes, a plurality of meter boxes and a plurality of intelligent electric meters, wherein each meter box is provided with a first intelligent measuring switch, each branch box is provided with a second intelligent measuring switch, each meter box can be connected with the plurality of intelligent electric meters through the first intelligent measuring switch, and each branch box can be connected with the plurality of meter boxes through the second intelligent measuring switch. Under the condition, in the low-voltage station area, each meter box can acquire meter data of each intelligent meter connected with the meter box through the first intelligent measuring switch and conduct corresponding data analysis, each branch box can acquire meter box data of each meter box connected with the meter box through the second intelligent measuring switch and conduct corresponding data analysis, meanwhile, each meter box can report acquired data to the energy controller through the first intelligent measuring switch, each branch box can report acquired data to the energy controller through the second intelligent measuring switch, and the energy controller is used for data summarizing and data analysis of the whole low-voltage station area, so that loop current short-circuit triggers and HPLC communication modules are not required to be arranged in each meter box, each branch box and each intelligent meter, and hardware cost of the whole low-voltage station area can be reduced.
In addition, by arranging the first intelligent measuring switch and the second intelligent measuring switch, the low-voltage area provided by the embodiment of the application can also avoid certain current interference impact and electric leakage false alarm risks to the stock circuit and avoid topology failure of the low-voltage area when network instability or circuit current instability occurs.
Alternatively, the analysis of the ammeter data and the analysis of the meter box data may be a topology analysis, and on this basis, the energy controller may analyze according to the ammeter data analysis result and the meter box data analysis result, so as to obtain the topology of the whole low-voltage transformer area.
In particular, the meter data analysis results may include a first branch topology between the meter box and the respective smart meter, and the meter box data analysis results may include a second branch topology between the branch box and the respective meter box.
In this case, the first intelligent measurement switch may be further configured to analyze a topology structure between the meter box and the intelligent electric meters according to the acquired electric meter data, to obtain a first branch topology structure between the meter box and each intelligent electric meter; the second intelligent measuring switch can be further used for analyzing the topological structure between the branch box and the meter box according to the acquired meter box data to acquire a second branch topological structure between the branch box and each meter box; the energy controller can be further used for analyzing the topological structure of the low-voltage transformer area according to the topological structure of the first branch line, the topological structure of the second branch line and the connection relation between the energy controller and each branch box, so as to obtain the topological structure of the transformer area corresponding to the low-voltage transformer area.
Optionally, the first measuring switch and the second measuring switch have the functions of data aggregation and convergence, so that the first measuring switch can analyze the topological structure between the meter box and the intelligent electric meters according to the acquired electric meter data through a big data topological identification algorithm to obtain a first branch topological structure between the meter box and each intelligent electric meter;
meanwhile, the second measuring switch can analyze the topological structure between the branch box and the meter box according to the acquired meter box data through a big data topological identification algorithm, and a second branch line topological structure between the branch box and each meter box is obtained.
Optionally, the energy controller may acquire a first branch topology structure and a second branch topology structure, and on this basis, the energy controller may analyze the topology structure of the entire low-voltage station area according to the first branch topology structure, the second branch topology structure, and the connection relationship between the energy controller and each branch box, so as to obtain a station area topology structure of the entire low-voltage station area.
Optionally, in order to realize the most basic topology identification from the power grid to the user side, the first intelligent measurement switch may further perform phase identification on each intelligent ammeter.
Specifically, the electric meter data may further include real-time phase current and real-time power of the smart electric meter, and the first smart measurement switch may be further configured to perform phase identification on each smart electric meter according to the real-time phase current and the real-time power of each smart electric meter.
Optionally, since the real-time reading time of each smart meter has a certain error, for example, a second-stage step error, the average phase current and average power of each smart meter in the period of time can be calculated by a time weighted average algorithm according to the time weighted average algorithm at each interval of time, and then the actual wiring phase of each smart meter and which phase outlet of the first smart measurement switch is connected to the smart meter are determined by a phase-by-phase matching algorithm, so that the phase identification of each smart meter is realized.
Optionally, each first intelligent measurement switch may report the phase identification result to the energy controller, and finally report the phase identification result to the corresponding data service platform by the energy controller.
Optionally, considering that for the low-voltage area, research on reducing the line loss and better performing line loss management has not only theoretical significance, but also extremely strong practical application values, such as planning and designing regional power networks, determining production technology and operation management level, and the like. Meanwhile, the line loss of the branch line of the low-voltage station is accurately positioned based on the station topology identification, the line loss of the power consumption of the station can be adjusted in time, and the line loss is steadily reduced, so that the low-voltage station is also a lifting expression of the management level of a power supply enterprise, and therefore the low-voltage station provided by the embodiment of the application can be also analyzed aiming at the line loss.
Specifically, the meter box data may further include meter box measurement data, and the second intelligent measurement switch may be further configured to analyze line losses between the branch boxes and the meter boxes according to the meter box measurement data of each meter box, so as to obtain a line loss analysis result between each meter box and the branch box; the energy controller is also used for counting the line loss analysis results sent by the branch boxes to obtain the line loss analysis results of the low-voltage transformer area.
Alternatively, the meter box metering data may be meter box current, voltage, power, etc. data.
It will be appreciated that the bin data analysis results may also include line loss analysis results between the respective bin and the branch bin.
Alternatively, since the distance between the meter box and the branch box is long, only the line loss between each meter box and the branch box can be analyzed, and then the low-voltage station area is used for counting the line loss analysis result.
In this embodiment, the second intelligent measurement module can realize minute-level data acquisition from the meter box to the branch box, so that the line loss analysis can be accurate to the minute level, and on this basis, the real-time monitoring of the power loss of the low-voltage transformer area can be greatly improved, and the power application efficiency of the power system is ensured to be maximized.
In addition, the communication module in the first intelligent measuring switch can comprise an RS485 communication module, so that the first intelligent measuring switch can be connected with each intelligent ammeter through an RS485 bus, on the basis, because the communication distance between the meter box and each intelligent ammeter is relatively short, the communication rate of the RS485 bus can be properly improved, for example, to 38400 or 57600bits/s, so that the data acquisition efficiency in the meter box is improved, the data acquisition efficiency of the whole meter box is uniformly improved, and the effectiveness and the real-time performance of the line loss analysis of the meter box are ensured.
Optionally, the smart meter may include multiple types, and may be divided into a competitive report and an active report in advance according to the type of the smart meter, in which case a competition mechanism may be introduced for the competitive report, so that each competitive report actively transmits meter data when competing for a data transmission opportunity.
Specifically, the first intelligent measurement switch is further used for broadcasting a competition signal to each competition report at each preset time interval so that each competition report can determine whether to report the first ammeter data of the competition report under the condition that the competition signal is received; the first intelligent measuring switch is also used for acquiring second ammeter data actively reported by each active report and first ammeter data reported by any competitive report at preset time intervals.
Alternatively, the competitive upper report may be a 645.07 type table, and the proactive upper report may be other smart meters among the plurality of smart meters except 645.07 type tables.
It can be appreciated that in this embodiment, the first intelligent measurement switch may broadcast the competitive signal for the competitive report, but not for other active reports.
Optionally, each report on competition may compete for the reporting opportunity after receiving the competition signal. It can be understood that only one competitive report can report the first ammeter data within the preset time.
Optionally, each active report may actively report the second electricity meter data within a preset time period. It can be understood that each active report within the preset time period can report the second ammeter data once.
Optionally, since the first intelligent measurement switch may be connected to each intelligent electric meter through an RS485 bus, the contention mechanism may be an RS485 bus second level contention message mechanism.
Optionally, each smart meter may correspond to an address bit number, and each smart meter stores a correspondence between each address bit number and the backoff delay time.
In one possible implementation, the backoff delay time may be stored in the form of a delay matrix in the smart meter.
Alternatively, the RS485 bus second level contention message mechanism may be applied by means of an arithmetic series sum, i.e. the delay matrix may be represented as an arithmetic series. On the basis, the initial backoff delay time and the tolerance can be set in advance, and the first intelligent measuring switch can adjust the delay matrix in real time according to the added competitive upper report.
Alternatively, the back-off delay time may be accurate to milliseconds.
It can be appreciated that in this embodiment, the arithmetic progression and characterization can determine the competition result for at most how long the multiple competing reports can report, i.e. determine whether or not there is a competing report that can report this time and which competing report can report.
Optionally, in this case, the contention resolution table is configured to determine, when the contention resolution table receives the contention resolution signal, a corresponding target backoff delay time according to the address bits of the contention resolution table and the corresponding relation, determine, within the target backoff delay time, whether the RS485 bus receives valid messages reported by other contention resolution tables, and determine to report the first electric meter data when it is determined that the RS485 bus does not receive valid messages reported by other contention resolution tables.
Optionally, the contention based report may determine its own target backoff delay time according to its own address bit number and stored correspondence, and monitor whether other messages reported by the contention based report appear on the RS485 bus and whether the messages are effectively received in the target backoff delay time.
Optionally, if other messages reported by the competition report form appear on the bus and the messages are effectively received, the competition report form can give up the competition; if no other messages reported by the competitive reporting report appear on the bus or the bus does not effectively receive the messages, and under the condition that the target back-off delay time arrives, determining that the competitive upper report can report the first ammeter data.
Optionally, the contention resolution report determines whether there is any data to be reported on the bus in addition to determining whether there is any other message reported on the contention resolution report and whether the bus is effectively receiving the message in the target backoff delay time.
It can be understood that the report on competition can determine that the first ammeter data can be reported when no other report on competition report reporting message appears on the bus or the bus does not effectively receive the message and has data to report.
Optionally, in order to ensure effective delay and stability in reporting data, the number of the report on competition should be maintained within a predetermined number, for example 20. The predetermined number may be specifically determined according to a communication rate of the bus and a contention validity time.
In an example, fig. 3 is an exemplary diagram of a first intelligent measurement switch acquiring first meter data and second meter data, referring to fig. 3, the preset duration may be 1s, the sum of arithmetic series may be 100ms, and the first meter data and the second meter data may include normal meter reading data and data interaction messages. The first intelligent measuring switch can respectively acquire the second ammeter data of each active report and the first ammeter data of any competitive report within 1 s.
In this example, the first intelligent measurement switch may add the first meter data and the second meter data to the message interaction queue, and introduce a priority mechanism and a timing wait mechanism to respond to the meter reading task schedule and/or the data acquisition request of the second-level competitive business interaction timer.
Optionally, in order to ensure normal development of the service, clock synchronization needs to be performed on each device in the low-voltage transformer area.
Specifically, the second intelligent measurement switch is further configured to receive the first service clock and the first network clock sent by the energy controller, perform clock synchronization on the second service clock and the second network clock of the branch box according to the first service clock and the first network clock, and send the second service clock and the second network clock after clock synchronization to the first intelligent measurement switch; the first intelligent measurement switch is further used for carrying out clock synchronization on a third service clock and a third network clock of the meter box according to the second service clock and the second network clock after clock synchronization, and broadcasting the third service clock and the third network clock after clock synchronization to each intelligent ammeter so that each intelligent ammeter can carry out clock synchronization on a fourth service clock and a fourth network clock of the intelligent ammeter according to the third service clock and the third network clock after clock synchronization.
Optionally, the energy controller may be in communication with a data acquisition service platform and a satellite time synchronization service platform, and the satellite time synchronization service platform communication may be a beidou time synchronization service platform.
Optionally, a carrier management module is further provided in the energy controller, where the carrier management module can implement service time synchronization and network access clock time synchronization in the energy controller, and then the energy controller can perform clock synchronization on the second intelligent measurement switch and the first intelligent measurement switch respectively.
In this embodiment, the second intelligent measurement switch and the first intelligent measurement switch can respectively perform service clock synchronization and network clock synchronization.
Optionally, the second smart metering switch, the first smart metering switch and the respective smart meters may perform clock synchronization in case the clock deviation exceeds a preset value.
In one possible implementation, the clock bias may be 20s.
Optionally, in the low-voltage area, a situation of communication failure of the smart meter may occur, but in the prior art, the communication failure of the smart meter is generally reported as a power-down event of the meter, but because the communication failure of the smart meter may be caused by multiple situations, the communication failure of the smart meter is directly reported as the power-down event of the meter, and the specific state of the smart meter in the current situation cannot be determined.
Based on the above, the first intelligent measurement switch can also determine the specific abnormal state of the intelligent ammeter with communication failure according to the current value.
Specifically, the first intelligent measurement switch is further used for determining an abnormal state of the abnormal intelligent ammeter according to a first current value of the first intelligent measurement switch and a second current value of the intelligent ammeter with normal communication under the condition that the abnormal intelligent ammeter with abnormal communication is detected; the abnormal intelligent electric meter is an intelligent electric meter with continuous preset times of communication failure.
Optionally, the first intelligent measurement switch may further determine an abnormal state of the abnormal intelligent electric meter according to the first current value and the electric meter power of the intelligent electric meter with normal communication.
Optionally, the abnormal state may include a communication disconnection state and an ammeter disconnection state, and the first intelligent measurement switch is further configured to determine that the abnormal intelligent ammeter is in the communication disconnection state when the first current value is greater than the second current value; the first intelligent measuring switch is also used for determining that the abnormal intelligent ammeter is in an ammeter power-down state under the condition that the first current value is equal to the second current value.
Optionally, the communication disconnection state refers to a communication connection disconnection fault of the abnormal intelligent ammeter, and at the moment, the abnormal intelligent ammeter cannot communicate, but can normally collect data; the ammeter power-down state refers to that the abnormal intelligent ammeter is powered off, and at the moment, the abnormal intelligent ammeter cannot collect data.
It can be appreciated that the power-down state of the electric meter is obviously more urgent than the communication power-down state, so that in order to facilitate electricians to distinguish emergency situations, a primary alarm and a secondary alarm can be set in the first intelligent measuring switch for timely processing of the emergency situations.
It can be understood that the emergency degree of the primary alarm is greater than that of the secondary alarm, and when the first intelligent measuring switch determines that the abnormal intelligent ammeter is in the ammeter power-down state, the first intelligent measuring switch can send out the primary alarm to prompt an electrician to arrive at the site for emergency treatment in the first time.
Optionally, the electric meter data may further include electric meter measurement data, and the first intelligent measurement switch may be further configured to perform non-invasive load identification on each intelligent electric meter according to the electric meter measurement data of each intelligent electric meter at each time.
Alternatively, the meter metering data may include data of current, voltage, power, etc. of the smart meter. Optionally, fig. 4 is a schematic service diagram of the first intelligent measurement switch, and referring to fig. 4, the communication module in the first intelligent measurement switch may further include a bluetooth module. The first intelligent measuring switch can inform each intelligent electric meter of starting load identification operation through the RS485 bus, and then sequentially reads electric meter metering data of each intelligent electric meter at each moment through the Bluetooth module.
Alternatively, the meter measurement data at each time point refers to second-level measurement data.
Optionally, the first intelligent measurement switch can identify the current power utilization state and the electric equipment of each electric meter one by one according to the electric meter metering data of each intelligent electric meter at each time through a preset identification model, and perform load recording.
Optionally, the first intelligent measurement switch may send the load record to the energy controller, and the energy controller accurately predicts various geographic dimensions (from the micro cell to the whole city) according to the load record of each table box.
Optionally, by performing non-invasive load identification on each smart meter, the accuracy of a load model (load voltage characteristic) used for power system stability simulation can be improved; helping the utility to verify whether the electrical appliances of the power consumer do respond correctly to the demand of the grid (e.g., load dump requests during peak load periods) in accordance with the Demand Response (DR) protocol.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. The apparatus embodiments described above are merely illustrative, for example, block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus according to various embodiments of the present application. In this regard, each block in the block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams, and combinations of blocks in the block diagrams, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. The low-voltage station area is characterized by comprising an energy controller, a plurality of branch boxes, a plurality of meter boxes and a plurality of intelligent electric meters, wherein a first intelligent measuring switch is arranged in each meter box, a second intelligent measuring switch is arranged in each branch box, each meter box is connected with the plurality of intelligent electric meters through the first intelligent measuring switch, each branch box is connected with the plurality of meter boxes through the second intelligent measuring switch, and the energy controller is connected with the plurality of branch boxes;
The first intelligent measuring switch is used for acquiring the ammeter data of each intelligent ammeter, carrying out ammeter data analysis according to the ammeter data to acquire ammeter data analysis results, and sending the ammeter data of each intelligent ammeter, the ammeter data analysis results and the ammeter box data of the ammeter box to the branch box;
the second intelligent measuring switch is used for carrying out meter box data analysis according to meter box data of each meter box to obtain meter box data analysis results, and sending the meter box data of each meter box, the meter box data analysis results, the ammeter data of each intelligent ammeter, the ammeter data analysis results and branch box data of the branch box to the energy controller;
the energy controller is used for carrying out data summarization according to the branch box data of each branch box, the meter box data of each meter box and the ammeter data of each intelligent ammeter respectively, and carrying out data analysis of a platform area according to the ammeter data analysis result and/or the meter box data analysis result.
2. The low voltage bay of claim 1, wherein said meter data analysis results comprise a first branch topology between a meter box and each of said smart meters, said meter box data analysis results comprising a second branch topology between said branch box and each of said meter boxes;
The first intelligent measuring switch is further used for analyzing the topological structure between the meter box and the intelligent electric meter according to the acquired electric meter data to obtain a first branch topological structure between the meter box and each intelligent electric meter;
the second intelligent measuring switch is further used for analyzing the topological structure between the branch box and the meter box according to the acquired meter box data to obtain a second branch line topological structure between the branch box and each meter box;
the energy controller is further configured to analyze the topology structure of the low-voltage transformer area according to the first branch topology structure, the second branch topology structure, and the connection relationship between the energy controller and each branch box, so as to obtain a transformer area topology structure corresponding to the low-voltage transformer area.
3. The low voltage bay of claim 1, wherein the meter box data comprises meter box metering data;
the second intelligent measuring switch is further used for analyzing line loss between the branch boxes and the meter boxes according to meter box metering data of the meter boxes to obtain line loss analysis results between the meter boxes and the branch boxes;
And the energy controller is also used for counting the line loss analysis results sent by the branch boxes to obtain the line loss analysis results of the low-voltage transformer area.
4. The low voltage utility of claim 1, wherein the smart meter includes a plurality of competitive reporting forms and a plurality of proactive reporting forms;
the first intelligent measuring switch is further used for broadcasting a competition signal to each competition upper report at each preset time interval so as to determine whether to report first ammeter data of the competition upper report under the condition that each competition upper report receives the competition signal;
the first intelligent measuring switch is further used for acquiring second ammeter data actively reported by each active report and first ammeter data reported by any competitive report at each interval of the preset time length.
5. The low voltage transformer area according to claim 4, wherein the first intelligent measuring switch is connected with each intelligent ammeter through an RS485 bus, each intelligent ammeter corresponds to an address bit number, and each intelligent ammeter stores a corresponding relation between each address bit number and a backoff delay time;
The contention resolution report is configured to determine a corresponding target backoff delay time according to the address number of the contention resolution report and the corresponding relationship when the contention resolution signal is received, determine whether the RS485 bus receives valid messages reported by other contention resolution reports within the target backoff delay time, and determine to report the first electric meter data when it is determined that the RS485 bus does not receive valid messages reported by other contention resolution reports.
6. The low voltage transformer area of claim 1, wherein the second intelligent measurement switch is further configured to receive a first service clock and a first network clock sent by the energy controller, synchronize a second service clock and a second network clock of the branch box according to the first service clock and the first network clock, and send the second service clock and the second network clock after clock synchronization to the first intelligent measurement switch;
the first intelligent measurement switch is further configured to perform clock synchronization on a third service clock and a third network clock of the meter box according to the second service clock and the second network clock after clock synchronization, and broadcast the third service clock and the third network clock after clock synchronization to each intelligent electric meter, so that each intelligent electric meter performs clock synchronization on a fourth service clock and a fourth network clock of the intelligent electric meter according to the third service clock and the third network clock after clock synchronization.
7. The low voltage transformer area according to claim 1, wherein the first intelligent measurement switch is further configured to determine, in a case where an abnormal smart meter with abnormal communication is detected, an abnormal state of the abnormal smart meter according to a first current value of the first intelligent measurement switch and a second current value of the smart meter with normal communication; the abnormal intelligent electric meter is an intelligent electric meter with continuous preset times of communication failure.
8. The low voltage bay of claim 7, wherein the abnormal state comprises a communication power down state and an electricity meter power down state;
the first intelligent measuring switch is further used for determining that the abnormal intelligent ammeter is in a communication disconnection state under the condition that the first current value is larger than the second current value;
the first intelligent measuring switch is further used for determining that the abnormal intelligent ammeter is in an ammeter power-down state under the condition that the first current value is equal to the second current value.
9. The low voltage bay of claim 1, wherein the meter data comprises real-time phase current and real-time power of the smart meter;
The first intelligent measuring switch is further used for carrying out phase identification on each intelligent ammeter according to the real-time phase current and the real-time power of each intelligent ammeter.
10. The low voltage bay of claim 1, wherein the meter data comprises meter metering data;
the first intelligent measuring switch is further used for carrying out non-invasive load identification on each intelligent electric meter according to electric meter measurement data of each intelligent electric meter at each moment.
CN202311094915.9A 2023-08-28 2023-08-28 Low voltage station area Pending CN117154932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311094915.9A CN117154932A (en) 2023-08-28 2023-08-28 Low voltage station area

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311094915.9A CN117154932A (en) 2023-08-28 2023-08-28 Low voltage station area

Publications (1)

Publication Number Publication Date
CN117154932A true CN117154932A (en) 2023-12-01

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Country Link
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