CN116470649A - Power distribution network reliability judging and early warning system based on data communication - Google Patents

Power distribution network reliability judging and early warning system based on data communication Download PDF

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Publication number
CN116470649A
CN116470649A CN202310514889.4A CN202310514889A CN116470649A CN 116470649 A CN116470649 A CN 116470649A CN 202310514889 A CN202310514889 A CN 202310514889A CN 116470649 A CN116470649 A CN 116470649A
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China
Prior art keywords
data
module
breaker
current
circuit breaker
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Granted
Application number
CN202310514889.4A
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Chinese (zh)
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CN116470649B (en
Inventor
朱祥初
孟昭潭
高磊磊
刘超
王海勇
胡媛媛
柳杰
逄雪
陈雪真
孙菁
史雪梅
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State Grid Shandong Electric Power Co Laixi Power Supply Co
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State Grid Shandong Electric Power Co Laixi Power Supply Co
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Priority to CN202310514889.4A priority Critical patent/CN116470649B/en
Priority claimed from CN202310514889.4A external-priority patent/CN116470649B/en
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    • 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
    • H02J13/00002—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 monitoring
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90—Details of database functions independent of the retrieved data types
    • G06F16/901—Indexing; Data structures therefor; Storage structures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90—Details of database functions independent of the retrieved data types
    • G06F16/906—Clustering; Classification
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements
    • 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
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
    • 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
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

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  • Engineering & Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Data Mining & Analysis (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Software Systems (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The utility model relates to a power grid operation safety device technical field especially relates to a distribution network reliability judgement and early warning system based on data communication, including electric current data acquisition module, data input module, terminal data transmission module, terminal data receiving module, total data receiving module, data processing module, total data transmission module and alarm module. The data input module comprises a plurality of data input units which are used for inputting the level data and the index data of each circuit breaker and are in one-to-one correspondence with the circuit breakers of each level, and the level data of the circuit breakers are used for distinguishing the positions of the circuit breakers; the index data of the circuit breaker are rated current of the circuit breaker, rated limit short-circuit breaking current of the circuit breaker and the like, the index data of the circuit breaker is input to the side of the circuit breaker, and then the index data can be compared with the index data of the upper stage of the circuit breaker through data communication and data processing, so that the reliability of the power distribution network is improved through circuit breaker selection, current early warning and the like.

Description

Power distribution network reliability judging and early warning system based on data communication
Technical Field
The application relates to the technical field of power grid operation safety equipment, in particular to a power distribution network reliability judging and early warning system based on data communication.
Background
The statements in this section merely provide background information related to the present application and may not necessarily constitute prior art.
In a power distribution system, two-to-multi-stage circuit breakers are mostly arranged, and because field power distribution personnel neglect or lack of selective knowledge on the configuration of the circuit breaker system, when the type of the circuit breaker is selected improperly, a certain loop is caused to break down, so that a superior protection device acts, and a larger range of power failure accidents are caused.
In practical application, each breaker, especially a plurality of breakers at the rear stage, because the distribution line wiring is not as visual as the electrical schematic diagram, on-site maintenance personnel are difficult to visually judge the hierarchical relationship among the breakers, and even if the hierarchy of the breakers is known, the searching of each breaker index data of the breaker at the last time is inconvenient to be used as a model selection reference; in practice, especially in some factory-like electric sites, the conditions of running current and the like of all loads are often considered when the circuit breaker is selected, the on-off capability and index data of the circuit breaker at the upper stage are not clear, when the circuit breaker in the factory breaks down, the circuit breaker is often replaced by the circuit breaker with larger rated current and larger rated running short-circuit breaking current index data, hidden danger is caused for the normal running of a power distribution system, if the circuit breaker in the factory breaks down, the circuit breaker cannot be effectively opened in time due to the fact that the index data such as the rated running short-circuit breaking current of the circuit breaker is too large, and the circuit breaker at the upper stage is disconnected, and other circuit breakers which are identical to the circuit breaker at the upper stage and are controlled by the circuit breaker at the same stage in the factory lose electricity simultaneously, so that huge loss is caused; under the consideration of the load requirement in the factory, personnel in the factory cannot select the circuit breaker which does not meet the low index data of the use requirement of the circuit breaker, and cannot accurately select the circuit breaker meeting the requirement on the premise of not knowing the index of the circuit breaker at the upper stage, so that the safety electricity utilization requirement of places such as the factory cannot be effectively and safely ensured, and the reliability of a power distribution network cannot be ensured.
In view of the above, it is necessary to design a power grid reliability judging and early warning system capable of solving the above technical problems.
Disclosure of Invention
Based on the above, aiming at the technical problems, the application provides a power distribution network reliability judging and early warning system based on data communication.
The technical scheme that this application solved the problem that prior art exists and adopted is:
the application provides a distribution network reliability judgement and early warning system based on data communication, include:
the current data acquisition module comprises a plurality of current data acquisition units which are used for carrying out current measurement on the outgoing line ends of all levels of circuit breakers of the power distribution network and are in one-to-one correspondence with the all levels of circuit breakers;
the data input module comprises a plurality of data input units which are used for inputting the level data and the index data of each circuit breaker and are in one-to-one correspondence with the circuit breakers of each level;
the terminal data transmitting module comprises a plurality of terminal data transmitting units which are used for transmitting the data acquired by the current data acquisition module and the data input by the data input module to the total data receiving module and are in one-to-one correspondence with all levels of circuit breakers;
the terminal data receiving module comprises a plurality of terminal data receiving units which are used for receiving the alarm information sent by the total data sending module and are in one-to-one correspondence with the circuit breakers of all levels;
the total data receiving module is used for receiving the data sent by the terminal data sending module and transmitting the data to the data processing module;
the data processing module is used for carrying out data analysis on the data transmitted by the total data receiving module, and transmitting alarm information to the total data transmitting module when the data exceeds a set threshold value;
the total data transmitting module is used for transmitting the alarm information of the data processing module to the terminal data receiving unit of the corresponding terminal data receiving module;
the alarm module comprises a plurality of alarm units which are used for alarming after receiving the alarm information of the total data transmission module and are in one-to-one correspondence with the circuit breakers at all levels.
Preferably, the current data acquisition module is a current transformer; the data processing module comprises a data storage module, a data analysis module and a data visualization module; the storage module is used for storing data, the data analysis module is used for carrying out data analysis on the data, and the data visualization module is used for displaying the result of the data analysis.
Preferably, the breaker-level data is used to distinguish where each breaker is located in the power distribution network; the breaker index data are rated current of the breaker and rated limit short-circuit breaking current of the breaker.
Preferably, the breaker index data further comprises one or more of a breaker rated operation short-circuit breaking current, a breaker rated short-time withstand current and a breaker rated impact withstand voltage index.
Preferably, the working process of the data processing module is as follows:
receiving data transmitted by a total data receiving module and storing the data into a data storage module;
the data analysis module classifies the data in the data storage module according to different breaker level data, and classifies and marks the data of each breaker; comparing the breaker index data with the upper breaker index data of the breaker, sending alarm information to a total data sending module when the breaker index data exceeds a set value, and displaying the alarm information through a data visualization module connected with the total data sending module; and analyzing the current data acquired by the current data acquisition unit of the circuit breaker in real time, and sending alarm information to the total data transmission module and displaying the alarm information through the data visualization module connected with the total data transmission module when the current data exceeds a set current value.
Preferably, the specific working steps of the data analysis module are as follows:
the first step: obtaining index data of each circuit breaker and current data of an outgoing line end corresponding to each circuit breaker;
and a second step of: comparing the index data of each circuit breaker with the index data corresponding to the circuit breaker of the upper level of the circuit breaker one by one, and sending alarm information to a total data sending module when the index data of any circuit breaker is larger than the index data corresponding to the circuit breaker of the upper level of the circuit breaker;
comparing the current data of the outlet end corresponding to each breaker with the rated current value of the breaker corresponding to the current data, and sending alarm information to the total data sending module when the maximum value in the current data of the outlet end of the breaker exceeds 90% of the rated current value of the breaker corresponding to the maximum value;
and a third step of: after the total data transmitting module receives the alarm information, the alarm information is transmitted to an alarm unit in an alarm module corresponding to the circuit breaker.
Preferably, the alarm unit comprises a first signal alarm unit and a second signal alarm unit, wherein the first signal alarm unit is used for alarming when the index data of the circuit breaker is larger than the index data corresponding to the circuit breaker at the upper stage of the circuit breaker;
and the second signal alarm unit is used for alarming when the maximum value in the current data of the outlet end of the circuit breaker exceeds 90% of the rated current of the circuit breaker corresponding to the maximum value.
Preferably, the data input module is a touch screen.
Preferably, the data input module, the terminal data transmitting module, the terminal data receiving module and the alarm module are fixedly installed after being integrated at the circuit breaker side.
Preferably, the data input module is a dot matrix liquid crystal screen.
Compared with the prior art, the beneficial effects of this application are:
1. forming a network for interconnecting index data and current data of each circuit breaker of the power distribution network by utilizing data communication, and realizing data distinction and hierarchical relationship distinction of each circuit breaker according to the power distribution network by using the set hierarchical data of the circuit breakers;
2. through inputting index data of the circuit breaker at the circuit breaker side, the index data can be compared with the index data of the upper stage of the circuit breaker through data communication and data processing, so that a more reasonable and safe circuit breaker model can be selected;
3. according to the distribution network reliability judging and early warning system based on data communication, an upper limit reference is provided for the type selection of the power utilization circuit breakers in each area, so that index data cannot exceed the range when the circuit breakers are selected, and the operation reliability of the distribution network is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.
Figure 1 is a block diagram of the overall structure of a power distribution network reliability judging and early warning system based on data communication,
fig. 2 is a schematic diagram of a circuit breaker connection layout for different levels in different areas.
In the figure:
1. and 2, a field end and a server end.
Detailed Description
The present application is further described below with reference to the drawings and examples.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present disclosure. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, are merely relational terms determined for convenience in describing structural relationships of the various components or elements of the present disclosure, and do not denote any one of the components or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
Fig. 1 is a preferred embodiment of a power grid reliability judging and early warning system based on data communication according to the present application, and referring to fig. 1, the power grid reliability judging and early warning system based on data communication according to the present application includes a current data acquisition module, a data input module, a terminal data transmitting module, a terminal data receiving module, and an alarm module, which are located at a field terminal 1; and a total data receiving module, a total data transmitting module and a data processing module located at the server side 2, wherein:
the current data acquisition module comprises a plurality of current data acquisition units which are used for carrying out current measurement on the outgoing line ends of all levels of circuit breakers of the power distribution network and are in one-to-one correspondence with the circuit breakers of all levels, and referring to fig. 1, assuming that the number of the circuit breakers on site is N, the current data acquisition module comprises a first current data acquisition unit, a second current data acquisition unit and an Nth current data acquisition unit which are in one-to-one correspondence with the circuit breakers of all levels;
the data input module comprises a plurality of data input units which are used for inputting the hierarchical data and the index data of each circuit breaker and are in one-to-one correspondence with the circuit breakers of all levels, and the data input module comprises a first data input unit, a second data input unit and an nth data input unit which are in one-to-one correspondence with the circuit breakers of all levels on the premise that the number of the circuit breakers on site is N; the breaker level data are used for distinguishing the positions of the breakers in the power distribution network; the breaker index data is a breaker rated current and a breaker rated limit short-circuit breaking current, and in some embodiments, the breaker index data further comprises one or more of a breaker rated operation short-circuit breaking current, a breaker rated short-time tolerance current and a breaker rated impact tolerance voltage index.
The terminal data transmitting module comprises a plurality of terminal data transmitting units which are used for transmitting the data acquired by the current data acquisition module and the data input by the data input module to the total data receiving module and are in one-to-one correspondence with all levels of circuit breakers; assuming that the number of the field circuit breakers is N, the terminal data transmission module comprises a first terminal data transmission unit, a second terminal data transmission unit and an Nth terminal data transmission unit which are in one-to-one correspondence with each level of circuit breakers;
the terminal data receiving module comprises a plurality of terminal data receiving units which are used for receiving the alarm information sent by the total data sending module and are in one-to-one correspondence with the circuit breakers of all levels; assuming that the number of the field circuit breakers is N, the terminal data receiving module comprises a first terminal data receiving unit, a second terminal data receiving unit and an Nth terminal data receiving unit which are in one-to-one correspondence with each level of circuit breakers;
the total data receiving module is used for receiving the data sent by the terminal data sending module and transmitting the data to the data processing module;
the data processing module is used for carrying out data analysis on the data transmitted by the total data receiving module, and transmitting alarm information to the total data transmitting module when the data exceeds a set threshold value; the working process of the data processing module is as follows:
firstly, receiving data transmitted by a total data receiving module, and storing the data into a data storage module;
then the data analysis module classifies the data in the data storage module according to different breaker level data, and classifies and marks the data of each breaker; comparing the breaker index data with the upper breaker index data of the breaker, sending alarm information to a total data sending module when the breaker index data exceeds a set value, and displaying the alarm information through a data visualization module connected with the total data sending module; and analyzing the current data acquired by the current data acquisition unit of the circuit breaker in real time, and sending alarm information to the total data transmission module and displaying the alarm information through the data visualization module connected with the total data transmission module when the current data exceeds a set current value.
The data analysis module comprises the following specific working steps:
the first step: obtaining index data of each circuit breaker and current data of an outgoing line end corresponding to each circuit breaker;
and a second step of: comparing the index data of each circuit breaker with the index data corresponding to the circuit breaker of the upper level of the circuit breaker one by one, and sending alarm information to a total data sending module when the index data of any circuit breaker is larger than the index data corresponding to the circuit breaker of the upper level of the circuit breaker;
comparing the current data of the outlet end corresponding to each breaker with the rated current value of the breaker corresponding to the current data, and sending alarm information to the total data sending module when the maximum value in the current data of the outlet end of the breaker exceeds 90% of the rated current value of the breaker corresponding to the maximum value;
and a third step of: after the total data transmitting module receives the alarm information, the alarm information is transmitted to an alarm unit in an alarm module corresponding to the circuit breaker.
The total data transmitting module is used for transmitting the alarm information of the data processing module to the terminal data receiving unit of the corresponding terminal data receiving module;
the alarm module comprises a plurality of alarm units which are used for alarming after receiving the alarm information of the total data transmission module and are in one-to-one correspondence with the circuit breakers at all levels. The number of the field circuit breakers is assumed to be N, and the alarm module comprises a first alarm unit, a second alarm unit and an N alarm unit which are in one-to-one correspondence with the circuit breakers of all levels;
each alarm unit comprises a first signal alarm unit and a second signal alarm unit, and the first signal alarm unit is used for giving an alarm when the index data of the circuit breaker is larger than the index data corresponding to the circuit breaker at the upper stage of the circuit breaker; and the second signal alarm unit is used for alarming when the maximum value in the current data of the outlet end of the circuit breaker exceeds 90% of the rated current of the circuit breaker corresponding to the maximum value. In practical application, the alarm modes of the first signal alarm unit and the second signal alarm unit are different, so as to distinguish whether the circuit breaker index data is greater than the index data corresponding to the circuit breaker at the upper stage of the circuit breaker to alarm or whether the maximum value in the circuit breaker outlet end current data exceeds 90% of the rated current of the corresponding circuit breaker to alarm.
In this embodiment, the current data acquisition module is a current transformer, and the current transformer is installed on the outgoing line side of the circuit breaker and is used for measuring the current of the outgoing line side of the circuit breaker, and the data input module, the terminal data transmission module, the terminal data receiving module and the alarm module are all fixedly installed on the corresponding circuit breaker side and are electrically connected with an external power supply, and are powered by the external power supply.
The data processing module comprises a data storage module, a data analysis module and a data visualization module; the storage module is used for storing data, the data analysis module is used for carrying out data analysis on the data, and the data visualization module is used for displaying the result of the data analysis. In some embodiments, the data input module, the terminal data transmitting module, the terminal data receiving module and the alarm module are fixedly installed after being integrated at the circuit breaker side, for example, the touch screen PLC integrated machine, the data input module is a touch screen, and the data information can be manually input through the touch screen; in some embodiments, the data input module is a dot matrix liquid crystal screen, and the data information is input through a mechanical key.
In the power grid reliability judging and early warning system based on data communication, circuit breaker level data refer to the level position of a target circuit breaker in a power distribution network, the level position is represented by two groups of consecutive Arabic numerals and is separated from index data of the circuit breaker, the first group of Arabic numerals represent areas where the circuit breaker is located, the second group of Arabic numerals represent sequential identifiers of the circuit breakers in the areas, for example, fig. 2 is a schematic diagram of connection layout of the circuit breakers in different levels in different areas, referring to fig. 2, power is supplied to an A area after power in the power distribution network passes through a transformer, the circuit breaker A controls the total power supply of the A area, and the level data of the circuit breaker A is 01001; the second area comprises a breaker B and a breaker B0 which belong to the next stage of the breaker A, the breaker B and the breaker B0 respectively control the total power supply of two electric field stations in the second area, and the level data of the breaker B and the breaker B0 are 02001 and 02002 respectively; the third area contains a breaker C, a breaker C0 and a breaker C1 which belong to the next stage of the breaker B, the breaker C0 and the breaker C1 respectively control the total power supply of three electric fields in the third area, and the level data of the breaker C, the breaker C0 and the breaker C1 are 03001, 03002 and 03003 respectively.
The breaker index data refers to one or more of breaker rated current, breaker rated limit short-circuit breaking current, breaker rated operation short-circuit breaking current, breaker rated short-time tolerance current and breaker rated impact tolerance voltage indexes, and can be set according to actual needs.
According to the power grid reliability judging and early warning system based on data communication, the application provides a power grid reliability judging and early warning method based on data communication, which comprises the following steps:
the first step: inputting corresponding breaker level data and breaker index data in a data input unit at the breaker side;
referring to fig. 2, assuming that the breaker to be installed and replaced is the breaker C0 in fig. 2, assuming that the rated current of the breaker C0 to be selected is 630A, the rated limit short-circuit breaking current of the breaker is 31.5kA, the rated operation short-circuit breaking current of the breaker is 12.5kA, the rated short-time withstand current of the breaker is 20kA, and the rated surge withstand voltage of the breaker is 2kV, if all of the above-mentioned breaker index data are required to be referenced, the breaker level data and the breaker index data inputted in the breaker-side data input unit are: 03002 00630 31500 12500 20000 02000;
wherein 03002 represents the circuit breaker level data (region+sequence identifier), it should be noted that the circuit breaker level data only plays a role in distinguishing the circuit breaker level, and may be an arabic number, or may be other letters or symbols that can be distinguished from each other, and a conventional technician may use appropriate level data in a manner or method familiar to himself. 00630 represents the rated current of the breaker C0 as 630A,31500 represents the rated limit short-circuit breaking current of the breaker as 31.5kA,12500 represents the rated operation short-circuit breaking current of the breaker as 12.5kA, 20000 represents the rated short-time withstand current of the breaker as 20kA, and the rated impact withstand voltage of the 02000 breaker as 2kV, and it is noted that the arrangement and specific identification of the index data of each breaker can be arranged by the related technicians according to engineering practice and working requirements, and the number of the index data of the breaker is not limited to the number described in the embodiment, but can be one or a plurality;
and a second step of: all breaker level data (including area data+sequence identification data) and breaker index data input by the data input unit of the breaker side, and all current data acquired by the current data acquisition modules are transmitted to the total data receiving module in real time by the terminal data transmitting unit of the corresponding breaker side;
and a third step of: the total data receiving module transmits data to the data processing module, and the data storage module in the data processing module firstly stores all breaker index data and current data acquired by the current data acquisition module under the same breaker level data (comprising regional data and sequence identification data) in a classified manner;
the data analysis module in the data processing module then performs data analysis on the breaker historical current data in the same breaker hierarchy data (including the area data+the sequence identification data) and the breaker index data in the adjacent breaker hierarchy data (including only the area data) respectively:
the data analysis module analyzes the historical current data of the circuit breaker in the data of the same circuit breaker hierarchy (including regional data and sequence identification data):
comparing the current data with all historical current data in the circuit breaker level (comprising area data and sequence identification data) data when new current data is received, and sending alarm information to a total data sending module by a data analysis module when the new current data exceeds the highest historical current data;
when the data analysis module performs data analysis on the breaker index data in the adjacent breaker hierarchy data (only including the area data):
comparing the breaker index data in the breaker hierarchy data (only including the regional data) with the breaker index data in the breaker hierarchy data of the upper level (only including the regional data), namely comparing the rated current of the breaker with the rated current of the upper level, comparing the rated limit short-circuit breaking current of the breaker with the rated limit short-circuit breaking current of the upper level, comparing the rated operation short-circuit breaking current of the breaker with the rated operation short-circuit breaking current of the upper level, and comparing the rated short-time tolerance current of the breaker with the rated short-time tolerance current of the upper level, and comparing the rated impact tolerance voltage of the breaker with the rated impact tolerance voltage of the upper level; when all the index data do not exceed the set threshold value, not alarming, and when any index data exceed the set threshold value, the data analysis module sends alarm information to the total data sending module;
in some embodiments in practical application, in order to distinguish alarm behaviors of different breaker index data, more different signal alarm units are arranged in the alarm module, and each breaker index data corresponds to an independent signal alarm unit, so that when the alarm unit sends out an alarm signal, the alarm module can distinguish which index data of a field breaker is improperly selected;
fourth step: the total data transmitting module transmits the alarm information to the terminal data receiving unit, and after the terminal data receiving unit receives the alarm information, the terminal data receiving unit transmits the alarm information to the alarm unit in the corresponding alarm module, and the alarm unit sends out an alarm signal.
According to the power grid reliability judging and early warning system based on data communication, through utilizing the data communication, the circuit breaker level data and index data in the power distribution network are interconnected, so that the circuit breaker index data can be compared with the circuit breaker at the upper stage when the circuit breaker is replaced and maintained, the power distribution reliability is improved under the condition of ensuring the power load, and the safety of the power distribution network is ensured.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
While the foregoing description of the embodiments of the present application has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the application, but rather, it is intended to cover all modifications or variations which may be resorted to without undue burden to those skilled in the art, having the benefit of the present application.

Claims (10)

1. A power distribution network reliability judging and early warning system based on data communication is characterized by comprising:
the current data acquisition module comprises a plurality of current data acquisition units which are used for carrying out current measurement on the outgoing line ends of all levels of circuit breakers of the power distribution network and are in one-to-one correspondence with the all levels of circuit breakers;
the data input module comprises a plurality of data input units which are used for inputting the level data and the index data of each circuit breaker and are in one-to-one correspondence with the circuit breakers of each level;
the terminal data transmitting module comprises a plurality of terminal data transmitting units which are used for transmitting the data acquired by the current data acquisition module and the data input by the data input module to the total data receiving module and are in one-to-one correspondence with all levels of circuit breakers;
the terminal data receiving module comprises a plurality of terminal data receiving units which are used for receiving the alarm information sent by the total data sending module and are in one-to-one correspondence with the circuit breakers of all levels;
the total data receiving module is used for receiving the data sent by the terminal data sending module and transmitting the data to the data processing module;
the data processing module is used for carrying out data analysis on the data transmitted by the total data receiving module, and transmitting alarm information to the total data transmitting module when the data exceeds a set threshold value;
the total data transmitting module is used for transmitting the alarm information of the data processing module to the terminal data receiving unit of the corresponding terminal data receiving module;
the alarm module comprises a plurality of alarm units which are used for alarming after receiving the alarm information of the total data transmission module and are in one-to-one correspondence with the circuit breakers at all levels.
2. The power distribution network reliability judging and early warning system based on data communication according to claim 1, wherein:
the current data acquisition module is a current transformer; the data processing module comprises a data storage module, a data analysis module and a data visualization module; the storage module is used for storing data, the data analysis module is used for carrying out data analysis on the data, and the data visualization module is used for displaying the result of the data analysis.
3. The power distribution network reliability judging and early warning system based on data communication according to claim 2, wherein:
the breaker level data are used for distinguishing the positions of the breakers in the power distribution network; the breaker index data are rated current of the breaker and rated limit short-circuit breaking current of the breaker.
4. The power distribution network reliability judging and early warning system based on data communication according to claim 3, wherein:
the breaker index data also comprises one or more of breaker rated operation short-circuit breaking current, breaker rated short-time tolerance current and breaker rated impact tolerance voltage indexes.
5. The system for judging and early warning reliability of a power distribution network based on data communication according to claim 2, 3 or 4, wherein the system is characterized in that:
the working process of the data processing module is as follows:
receiving data transmitted by a total data receiving module and storing the data into a data storage module;
the data analysis module classifies the data in the data storage module according to different breaker level data, and classifies and marks the data of each breaker; comparing the breaker index data with the upper breaker index data of the breaker, sending alarm information to a total data sending module when the breaker index data exceeds a set value, and displaying the alarm information through a data visualization module connected with the total data sending module; and analyzing the current data acquired by the current data acquisition unit of the circuit breaker in real time, and sending alarm information to the total data transmission module and displaying the alarm information through the data visualization module connected with the total data transmission module when the current data exceeds a set current value.
6. The data communication-based power distribution network reliability judging and early warning system according to claim 5, wherein:
the data analysis module comprises the following specific working steps:
the first step: obtaining index data of each circuit breaker and current data of an outgoing line end corresponding to each circuit breaker;
and a second step of: comparing the index data of each circuit breaker with the index data corresponding to the circuit breaker of the upper level of the circuit breaker one by one, and sending alarm information to a total data sending module when the index data of any circuit breaker is larger than the index data corresponding to the circuit breaker of the upper level of the circuit breaker;
comparing the current data of the outlet end corresponding to each breaker with the rated current value of the breaker corresponding to the current data, and sending alarm information to the total data sending module when the maximum value in the current data of the outlet end of the breaker exceeds 90% of the rated current value of the breaker corresponding to the maximum value;
and a third step of: after the total data transmitting module receives the alarm information, the alarm information is transmitted to an alarm unit in an alarm module corresponding to the circuit breaker.
7. The data communication-based power distribution network reliability judging and early warning system according to claim 6, wherein:
the alarm unit comprises a first signal alarm unit and a second signal alarm unit, wherein the first signal alarm unit is used for giving an alarm when the index data of the circuit breaker is larger than the index data corresponding to the circuit breaker at the upper stage of the circuit breaker;
and the second signal alarm unit is used for alarming when the maximum value in the current data of the outlet end of the circuit breaker exceeds 90% of the rated current of the circuit breaker corresponding to the maximum value.
8. The power distribution network reliability judging and early warning system based on data communication according to claim 1, wherein:
the data input module is a touch screen.
9. The power distribution network reliability judging and early warning system based on data communication according to claim 1, wherein:
the data input module, the terminal data transmitting module, the terminal data receiving module and the alarm module are fixedly installed after being integrated at the side of the circuit breaker.
10. The data communication-based power distribution network reliability judging and early warning system according to claim 9, wherein:
the data input module is a dot matrix liquid crystal screen.
CN202310514889.4A 2023-05-09 Power distribution network reliability judging and early warning system based on data communication Active CN116470649B (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101409467A (en) * 2008-11-26 2009-04-15 上海电器科学研究所（集团）有限公司 Circuit breaker controller
CN103457247A (en) * 2013-08-09 2013-12-18 福州大学 Multi-level full-range selective coordination and protection technology of low-voltage system
CN104578400A (en) * 2013-10-24 2015-04-29 上海天申电气设备有限公司 Intelligent protection device and method for power distribution circuit breaker
CN107843800A (en) * 2017-10-20 2018-03-27 国家电网公司 Supply network monitoring method, apparatus and system
CN108493925A (en) * 2018-03-15 2018-09-04 保定市睿为电气科技有限公司 A kind of exchange electrode difference protection and electric energy intelligent management integration unit
CN211720250U (en) * 2020-02-28 2020-10-20 上海良信电器股份有限公司 Circuit breaker and topology network of circuit breaker
CN114079322A (en) * 2020-08-21 2022-02-22 上海良信电器股份有限公司 Breaker data management method and smart grid system
CN114285165A (en) * 2021-12-26 2022-04-05 苏州赢霆信息科技有限公司 Intelligent circuit breaker system
CN115149503A (en) * 2022-06-20 2022-10-04 常熟理工学院 Method and system for checking parameter coordination of low-voltage intelligent circuit breaker based on block chain

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101409467A (en) * 2008-11-26 2009-04-15 上海电器科学研究所（集团）有限公司 Circuit breaker controller
CN103457247A (en) * 2013-08-09 2013-12-18 福州大学 Multi-level full-range selective coordination and protection technology of low-voltage system
CN104578400A (en) * 2013-10-24 2015-04-29 上海天申电气设备有限公司 Intelligent protection device and method for power distribution circuit breaker
CN107843800A (en) * 2017-10-20 2018-03-27 国家电网公司 Supply network monitoring method, apparatus and system
CN108493925A (en) * 2018-03-15 2018-09-04 保定市睿为电气科技有限公司 A kind of exchange electrode difference protection and electric energy intelligent management integration unit
CN211720250U (en) * 2020-02-28 2020-10-20 上海良信电器股份有限公司 Circuit breaker and topology network of circuit breaker
CN114079322A (en) * 2020-08-21 2022-02-22 上海良信电器股份有限公司 Breaker data management method and smart grid system
CN114285165A (en) * 2021-12-26 2022-04-05 苏州赢霆信息科技有限公司 Intelligent circuit breaker system
CN115149503A (en) * 2022-06-20 2022-10-04 常熟理工学院 Method and system for checking parameter coordination of low-voltage intelligent circuit breaker based on block chain

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张志遥: ""多层级配电系统全选择性保护策略研究与实现"", 《中国优秀硕士学位论文全文数据库 工程科技II辑》, no. 3, 15 March 2022 (2022-03-15), pages 042 - 3137 *

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