CN116260119B - Circuit breaker protection method and system for circuit data identification - Google Patents
Circuit breaker protection method and system for circuit data identification Download PDFInfo
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- CN116260119B CN116260119B CN202310505164.9A CN202310505164A CN116260119B CN 116260119 B CN116260119 B CN 116260119B CN 202310505164 A CN202310505164 A CN 202310505164A CN 116260119 B CN116260119 B CN 116260119B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for switches
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values
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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
- H02J13/00001—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 the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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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
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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
- H02J13/00032—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
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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
- H02J13/00032—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
- H02J13/0004—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 involved in a protection system
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a circuit breaker protection method and system for circuit data identification, and relates to the technical field of circuit breakers, wherein the method comprises the following steps: setting a monitoring element into a power distribution network cable, recording position information and determining a monitoring area; reading monitoring data of the monitoring element, and carrying out anomaly identification through the monitoring data; when abnormal data exists, positioning an abnormal monitoring area based on the data source position of the abnormal data, and waking up a circuit breaker in the abnormal monitoring area; inputting the abnormal data into an abnormal positioning model; matching the circuit breakers in the wake-up state based on the abnormal positioning result, and sending the circuit breaking control information to the matched circuit breakers; and receiving the circuit breaking control response information, and completing circuit protection processing of the abnormal data based on the circuit breaking control response information. The invention solves the technical problems of low intelligent degree of the protection response and poor control quality of the circuit breaker in the prior art, and achieves the technical effects of improving the protection quality of the circuit breaker and improving the safety and reliability of the circuit.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a circuit breaker protection method and system for circuit data identification.
Background
A circuit breaker is a switching device that can turn on, carry, and turn off a current under normal loop conditions, and turn on, carry, and turn off a current under abnormal loop conditions for a prescribed time. The circuit breaker is used as a switching device with wide application range and large application amount, and research on the related technology of circuit breaker protection has very important significance for ensuring the circuit safety.
At present, in the actual working process of the circuit breaker, the response speed of handling the abnormal condition of the circuit is low, and the circuit cannot be reacted to the problems in the circuit in time, so that the safety accident of the circuit is caused.
Disclosure of Invention
The application provides a circuit breaker protection method and system for circuit data identification, which are used for solving the technical problems of low intelligent degree of circuit breaker protection response and poor control quality in the prior art.
In view of the above problems, the present application provides a circuit breaker protection method and system for circuit data identification.
In a first aspect of the present application, there is provided a circuit breaker protection method of circuit data identification, wherein the method is applied to a circuit breaker protection system in communication connection with a circuit breaker, a monitoring element, the method comprising:
setting the monitoring element into a power distribution network cable, recording position information and determining a monitoring area;
reading monitoring data of the monitoring element, and carrying out abnormality identification through the monitoring data;
when abnormal data exist, positioning an abnormal monitoring area based on the data source position of the abnormal data, and waking up the circuit breaker in the abnormal monitoring area;
inputting the abnormal data into an abnormal positioning model, and outputting an abnormal positioning result;
matching the circuit breaker in the wake-up state based on the abnormal positioning result, and sending the circuit breaking control information to the matched circuit breaker;
and receiving the open circuit control response information, and completing circuit protection processing of the abnormal data based on the open circuit control response information.
In a second aspect of the present application, there is provided a circuit breaker protection system for circuit data identification, the system comprising:
the monitoring area determining module is used for setting a monitoring element into the power distribution network cable, recording position information and determining a monitoring area;
the abnormality identification module is used for reading the monitoring data of the monitoring element and carrying out abnormality identification through the monitoring data;
the circuit breaker awakening module is used for positioning an abnormal monitoring area based on the data source position of the abnormal data when the abnormal data exist, and carrying out circuit breaker awakening in the abnormal monitoring area;
the positioning result output module is used for inputting the abnormal data into an abnormal positioning model and outputting an abnormal positioning result;
the control information sending module is used for matching the circuit breakers in the wake-up state based on the abnormal positioning result and sending the circuit breaking control information to the matched circuit breakers;
and the protection processing module is used for receiving the open circuit control response information and completing the circuit protection processing of the abnormal data based on the open circuit control response information.
One or more technical solutions provided in the present application have at least the following technical effects or advantages:
according to the method, the monitoring element is arranged in the power distribution network line, the position information is recorded, the monitoring area is determined, then the monitoring data of the monitoring element are read, the abnormal identification is carried out through the monitoring data, when the abnormal data exist, the abnormal monitoring area is positioned based on the data source position of the abnormal data, the circuit breaker in the abnormal monitoring area is awakened, then the abnormal data are input into an abnormal positioning model, the abnormal positioning result is output, the circuit breaker in the awakened state is matched based on the abnormal positioning result, the circuit breaking control information is sent to the matched circuit breaker, the circuit breaking control response information is received, and the circuit protection processing of the abnormal data is completed based on the circuit breaking control response information. The technical effects of improving the protection quality of the circuit breaker and improving the response speed of the circuit breaker are achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a circuit breaker protection method for circuit data identification according to an embodiment of the present application;
fig. 2 is a schematic flow chart of using n circuit breakers as matched circuit breakers in a circuit breaker protection method for identifying circuit data according to an embodiment of the present application;
fig. 3 is a schematic flow chart of circuit protection processing for completing abnormal data in the circuit data identification circuit breaker protection method according to the embodiment of the present application;
fig. 4 is a schematic structural diagram of a circuit breaker protection system with circuit data identification according to an embodiment of the present application.
Reference numerals illustrate: the device comprises a monitoring area determining module 11, an abnormality identifying module 12, a circuit breaker awakening module 13, a positioning result output module 14, a control information transmitting module 15 and a protection processing module 16.
Detailed Description
The application provides a circuit breaker protection method and system for circuit data identification, which are used for solving the technical problems of low intelligent degree of circuit breaker protection response and poor control quality in the prior art.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
It should be noted that the terms "comprises" and "comprising," along with any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus, but may include other steps or modules not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
As shown in fig. 1, the present application provides a circuit breaker protection method for circuit data identification, wherein the method is applied to a circuit breaker protection system, and the circuit breaker protection system is in communication connection with a circuit breaker and a monitoring element, and the method includes:
step S100: setting the monitoring element into a power distribution network cable, recording position information and determining a monitoring area;
specifically, the circuit breaker protection system is used for performing power-off protection on a circuit connected with the circuit breaker, and can automatically cut off the circuit when faults such as serious overload, short circuit, undervoltage and the like occur on the circuit, and is in communication connection with the circuit breaker and the monitoring element, so that the circuit breaker and the monitoring element are controlled, and the power-off protection aim is achieved. The monitoring element is a device for intelligently monitoring the distribution network cable and comprises a current sensor and a voltage sensor. The current sensor is a device for monitoring the detected current in the power distribution network cable and converting the monitored information into an electric signal. The voltage sensor is a device for monitoring the measured voltage in the distribution network cable, converting the monitored information into an electric signal or other information in a required form and then outputting the converted information.
In one embodiment, the distribution network is a power network that receives power from a power transmission network or regional power plant, distributes the power locally through a distribution facility, or distributes the power to various customers in steps according to voltage. Preferably, the setting of the monitoring elements is performed according to the size of the distribution network cable, the monitoring range of the monitoring elements (a current sensor and a voltage sensor) is obtained, the number and the set positions of the monitoring elements are determined by combining the area size of the distribution network cable, and the position information is obtained by recording the number and the set positions of the monitoring elements. And simultaneously, determining the monitoring area corresponding to each monitoring element. By recording the positions of the monitoring elements and the monitoring areas, reliable data are provided for the subsequent determination of abnormal areas of the power distribution network cable.
Step S200: reading monitoring data of the monitoring element, and carrying out abnormality identification through the monitoring data;
further, the monitoring element includes a current sensor and a voltage sensor, and step S200 of the embodiment of the present application further includes:
step S210: acquiring instantaneous current and instantaneous voltage data of a power distribution network line through the current sensor and the voltage sensor;
step S220: the monitoring data is generated based on the instantaneous current, instantaneous voltage, and acquisition period.
In the embodiment of the application, the circuit breaker protection system is in communication connection with the monitoring element, so that information of monitoring output of the monitoring element is collected, and the monitoring data are obtained. Wherein the monitoring data includes instantaneous current, instantaneous voltage and acquisition period. The collection period is a time period when two adjacent times of data collection are separated by using a current sensor and a voltage sensor to carry out the instantaneous current and the instantaneous voltage in the wiring network line, and the collection period can be 3 minutes, 5 minutes, 10 minutes and the like by way of example.
In one possible embodiment, the current voltage through the distribution network should be kept within a stable range, and the exemplary 10kv distribution network current value range is 400-600A; the current value range of the 110kv distribution network line passing through is 600-1200A; the 220kv distribution network line passes through a current value range of 600-1200A. When the monitored current value of the current sensor in the 10kv distribution network cable is 800A, and the current value exceeds the current value range of 400-600 at the moment, the current value data of 800A is abnormal data, namely, the normal data change range of the monitoring element is determined according to the load information of the distribution network cable, the normal data change range is used as the basis of abnormal identification, and the abnormal identification is carried out on the monitored data.
Step S300: when abnormal data exist, positioning an abnormal monitoring area based on the data source position of the abnormal data, and waking up the circuit breaker in the abnormal monitoring area;
step S400: inputting the abnormal data into an abnormal positioning model, and outputting an abnormal positioning result;
in one possible embodiment, when abnormal data exists, the position information of the monitoring element with the collected abnormal data is extracted, so that an abnormal monitoring area is determined according to the position information of the monitoring element and the monitoring area of the monitoring element. Preferably, the position information is used as positioning information of the abnormal monitoring area, and the monitoring area is used as an area range of the abnormal monitoring area. After the abnormal monitoring area is obtained, a wake-up instruction is sent to the circuit breaker in the abnormal monitoring area, wherein the wake-up instruction is an opening instruction issued to the circuit breaker, so that the circuit breaker is converted into a working state from a dormant state, and power-off protection operation is carried out on the power distribution network cable. The area range corresponding to the abnormal monitoring area is a larger range, and the purpose of roughly positioning the abnormal position can be achieved, so that the circuit breaker near the abnormal position is awakened, the abnormal power distribution network line is subjected to circuit breaking control according to the awakened circuit breaker, the control area and the control complexity are subjected to dimension reduction, and the technical effects of improving the control efficiency and the control accuracy are achieved.
In the embodiment of the application, the information contained in the abnormal data is analyzed by utilizing an intelligent abnormal positioning model, so that an abnormal positioning result is obtained. The abnormal positioning result is a position of an abnormality in the power distribution network cable obtained after the abnormal circuit index in the abnormal data is analyzed. The abnormal positioning model is a functional model for intelligently determining the abnormal position, preferably, the abnormal positioning model is a model constructed by taking a BP neural network as a basic framework, input data are abnormal data, and output data are abnormal positioning results.
Specifically, by acquiring an operation database of the power distribution network cable (the operation database is a storage space for storing working data generated in the power transmission process of the power distribution network cable), operation data in a historical time period in the operation database is extracted, and historical operation data is obtained, wherein the historical operation data comprises historical abnormal data and historical abnormal positioning results. The historical operation data is divided into a training set and a verification set according to a preset dividing ratio, and preferably, the preset dividing ratio is set by a worker at will, and is not limited herein.
Specifically, training a framework constructed by the BP neural network by using a training set until a training result reaches convergence, and obtaining a converged abnormal positioning model. And inputting the historical abnormal data in the verification set into the abnormal positioning model to obtain a verification abnormal positioning result, comparing the verification abnormal positioning result with the historical abnormal positioning result in the verification set to obtain a proportion of successful comparison, and setting the proportion as the accuracy of the model. And verifying the accuracy of the model operation by judging whether the accuracy reaches the preset accuracy, and outputting the abnormal positioning model if the accuracy meets the requirement. And inputting the obtained abnormal data into an abnormal positioning model, and outputting the abnormal positioning result through model operation.
Step S500: matching the circuit breaker in the wake-up state based on the abnormal positioning result, and sending the circuit breaking control information to the matched circuit breaker;
further, as shown in fig. 2, step S500 in the embodiment of the present application further includes:
step S510: obtaining a positioning fuzzy identifier of the abnormal positioning result;
step S520: judging whether the positioning fuzzy identification meets a preset fuzzy identification threshold value or not;
step S530: if the preset fuzzy identification threshold cannot be met, matching n circuit breakers according to the fuzzy value of the positioning fuzzy identification, wherein n is an integer greater than 1;
step S540: and taking the n circuit breakers as the matched circuit breakers.
In one possible embodiment, according to the positioning fuzzy identifier of the abnormal positioning result, whether the positioning fuzzy identifier meets a preset fuzzy identifier threshold value is judged, if yes, the positioning range of the abnormal positioning result is indicated to be within the control range of one circuit breaker, if not, the area range corresponding to the positioning identifier of the abnormal positioning result is indicated to be too large, which circuit breaker control range cannot be determined, then n circuit breakers are matched according to the fuzzy value of the positioning fuzzy identifier, and the larger the numerical value of the fuzzy value is, the more circuit breakers are matched. Preferably, in the process of matching the circuit breakers, not all the circuit breakers in the power distribution network line are matched, but the circuit breakers in the wake-up state are matched, and the matched circuit breakers are obtained according to the matching result. And the power distribution network line in the area where the abnormal positioning result is located can be subjected to circuit breaking control by sending circuit breaking control information to the matched circuit breaker, so that the safety of the network line is ensured. The circuit breaking control information is used for performing power-off protection on the matched circuit breaker.
Further, step S500 in the embodiment of the present application further includes:
step S550: based on the anomaly level of the anomaly data, matching a response monitoring window;
step S560: setting a time node for sending the circuit breaking control information to the matched circuit breaker as a zero time node, and determining a last time node according to the response monitoring window;
step S570: and if the circuit breaking control response information of the last-time node still does not have the execution feedback, judging that the matched circuit breaker does not execute the circuit breaking control.
Further, step S550 in the embodiment of the present application further includes:
step S551: recording protection execution information of the circuit breaker and generating a circuit breaker control file;
step S552: generating an adjustment coefficient of the window length through the circuit breaker control file;
step S553: and adjusting the window duration of the response monitoring window according to the adjustment coefficient.
In one possible embodiment, the anomaly level of the anomaly data is determined by the extent to which the anomaly data deviates from the normal data range. Illustratively, when the deviation is 0-20% from the normal data range, the abnormality level is set to one level; when the abnormal data range deviates from 20% -40% of the normal data range, the abnormal level is set to be a second level; when the data deviates from the normal data range by more than 40%, the abnormal level is set to be three levels, wherein the abnormal level corresponding to one level is the lowest, and the abnormal level corresponding to three levels is the highest.
Specifically, the response monitoring window is obtained by matching according to the abnormality level of the abnormality data. The response monitoring window is a time period for monitoring the abnormal data positioning position of the matched circuit breaker for circuit breaking protection operation. Preferably, the higher the abnormality level, the shorter the corresponding time period of the response monitoring window; the lower the anomaly level, the longer the corresponding time period of the response monitoring window. That is, the higher the level of abnormality, the larger the range of the fluctuation of the abnormal data, and the larger the potential safety hazard, so that the abnormality needs to be handled in time, and the shorter the corresponding response monitoring window time.
In one embodiment of the present application, by setting the time node for transmitting the disconnection control information to the matching circuit breaker to a zero time node, that is, an initial time node for responding to the monitoring window, based on the time period for responding to the monitoring window; and then, according to the time period of the response monitoring window, starting from the zero-time node, determining a time node after the corresponding time of the response monitoring window passes, and determining the time node as a last-time node. And when the circuit breaking control response information is still not fed back when the circuit breaking control response information is at the last time node, the circuit breaking control response information indicates that the matched circuit breaker does not execute the circuit breaking operation on the distribution network line with the abnormal positioning result.
In one embodiment of the application, the protection execution information of the circuit breaker is recorded, and the circuit breaker control file is obtained according to the recording result. The protection execution information is the protection condition of the network cable after the circuit breaker receives the circuit breaking control information, and comprises the circuit breaking control information and the execution condition. And adjusting the window duration of the response monitoring window according to the protection execution condition recorded in the circuit breaker control file.
Preferably, the recorded protection execution use duration is subjected to averaging processing according to the time used when the circuit breaker is in protection execution in the circuit breaker control file, and the average duration required to be spent when the circuit breaker is in protection control is obtained according to the result of the averaging processing. And obtaining the adjustment coefficient of the window length according to the average duration. Wherein the adjustment factor is an amplitude of adjustment of the response monitor window length. And adjusting the window duration of the response monitoring window according to the adjustment coefficient, so that the response monitoring window is more in line with the protection execution condition of the circuit breaker, and the execution monitoring of the circuit breaking protection is more reliable. Preferably, the time period for executing monitoring of the circuit breaking protection is shortened by adjusting the time length of the response monitoring window, so that the feedback monitoring efficiency is improved.
Step S600: and receiving the open circuit control response information, and completing circuit protection processing of the abnormal data based on the open circuit control response information.
Further, as shown in fig. 3, the circuit breaker protection system is communicatively connected to the auxiliary element, and step S600 of the embodiment of the present application further includes:
step S610: when the circuit breaking control response information is not executed, obtaining an associated auxiliary element according to the matching of the matched circuit breaker;
step S620: sending auxiliary disconnection control information to the associated auxiliary element;
step S630: and finishing the circuit protection processing of the abnormal data through the associated auxiliary element.
Specifically, the open circuit control response information is obtained after the open circuit control information is sent to the circuit breaker, and the monitoring element is used for monitoring the instantaneous voltage and the instantaneous current of the distribution network line. When the circuit breaking control response information is not executed, namely, voltage and current exist in the power distribution network line area in the abnormal positioning result, the fact that the matched circuit breaker does not execute the circuit breaking control information is indicated, the associated auxiliary element is needed to be obtained according to the matched circuit breaker, and circuit protection of abnormal data is completed by means of the associated auxiliary element.
Specifically, by matching the associated auxiliary element according to the matching circuit breaker, auxiliary circuit breaking control information is transmitted to the associated auxiliary element. The associated auxiliary element is an element associated with the matched circuit breaker and comprises a knife switch, a main switch and the like. The auxiliary disconnection control information is information which is transmitted to the associated auxiliary element and used for conducting disconnection control on the distribution network cable with the abnormal positioning result.
Further, step S600 in the embodiment of the present application further includes:
step S640: setting an overhaul control period;
step S650: positioning an overhaul time node through the circuit breaker control file and the overhaul control period;
step S660: and carrying out maintenance treatment on the circuit breaker through the maintenance time node.
In one possible embodiment, the maintenance control period is a preset time period between two adjacent maintenance operations of the circuit breaker, which may be half a month, one month or one quarter, and is set by a worker, without limitation, and the maintenance time is determined to be the non-working time of the circuit breaker according to the time period of the circuit breaker in the circuit breaker control file, and the maintenance time node is determined according to the maintenance control period. Wherein, the maintenance time node is the time node for overhauling the circuit breaker. And overhauling the circuit breaker at the overhauling time node, thereby ensuring the normal operation of the circuit breaker.
In summary, the embodiments of the present application have at least the following technical effects:
according to the method, the position and the monitoring area of the monitoring element are determined through the setting of the monitoring element on the power distribution network line, the monitoring data of the power distribution network line are obtained through the monitoring element, the goal of obtaining basic analysis data is achieved, then abnormal data in the monitoring data are identified, the abnormal monitoring area is further positioned according to the data source position of the abnormal data, the circuit breaker in the area is awakened according to the positioning result, then the abnormal information contained in the abnormal data is analyzed by utilizing an intelligent abnormal positioning model, the circuit breaker is matched according to the analysis result, the circuit breaker is controlled by utilizing the circuit breaking control information, the circuit breaking protection operation is carried out, then the feedback result of the execution is analyzed, and the circuit protection processing is achieved. The intelligent degree of circuit protection is improved, and the technical effects of protection accuracy and protection efficiency are improved.
Example two
Based on the same inventive concept as the circuit breaker protection method identified by circuit data in the foregoing embodiments, as shown in fig. 4, the present application provides a circuit breaker protection system identified by circuit data, and the system and method embodiments in the embodiments of the present application are based on the same inventive concept. Wherein the system comprises:
the monitoring area determining module 11 is used for setting monitoring elements into the power distribution network cable, recording position information and determining a monitoring area;
the abnormality identification module 12 is used for reading the monitoring data of the monitoring element and carrying out abnormality identification through the monitoring data;
the circuit breaker awakening module 13 is used for positioning an abnormal monitoring area based on the data source position of the abnormal data when the abnormal data exist, and carrying out circuit breaker awakening in the abnormal monitoring area;
the positioning result output module 14 is used for inputting the abnormal data into an abnormal positioning model and outputting an abnormal positioning result;
a control information sending module 15, where the control information sending module 15 is configured to match a breaker in an awake state based on the abnormal positioning result, and send open control information to the matched breaker;
and the protection processing module 16 is used for receiving the open circuit control response information, and completing the circuit protection processing of the abnormal data based on the open circuit control response information.
Further, the system further comprises:
an auxiliary element obtaining unit for obtaining an associated auxiliary element according to the matching circuit breaker matching when the disconnection control response information is not executed;
a disconnection control information transmission unit for transmitting auxiliary disconnection control information to the associated auxiliary element;
and the circuit protection processing unit is used for completing the circuit protection processing of the abnormal data through the associated auxiliary element.
Further, the system further comprises:
the fuzzy identification unit is used for obtaining the positioning fuzzy identification of the abnormal positioning result;
the fuzzy identification judging unit is used for judging whether the positioning fuzzy identification meets a preset fuzzy identification threshold value or not;
the circuit breaker matching unit is used for matching n circuit breakers according to the fuzzy value of the positioning fuzzy mark if the preset fuzzy mark threshold cannot be met, wherein n is an integer greater than 1;
and the matching circuit breaker setting unit is used for taking the n circuit breakers as the matching circuit breakers.
Further, the system further comprises:
the monitoring window matching unit is used for matching a response monitoring window based on the abnormal level of the abnormal data;
the last time node determining unit is used for setting a time node for sending the circuit breaking control information to the matched circuit breaker to be a zero time node and determining the last time node according to the response monitoring window;
and the circuit breaking control execution judging unit is used for judging that the matched circuit breaker does not execute circuit breaking control if the circuit breaking control response information of the last time node still does not have execution feedback.
Further, the system further comprises:
the voltage data acquisition unit is used for acquiring instantaneous current and instantaneous voltage data of the power distribution network line through the current sensor and the voltage sensor;
and the monitoring data generation unit is used for generating the monitoring data based on the instantaneous current, the instantaneous voltage and the acquisition period.
Further, the system further comprises:
the control file generation unit is used for recording the protection execution information of the circuit breaker and generating a circuit breaker control file;
the adjustment coefficient generation unit is used for generating an adjustment coefficient of the window length through the circuit breaker control file;
and the window duration adjusting unit is used for adjusting the window duration of the response monitoring window through the adjusting coefficient.
Further, the system further comprises:
the control period setting unit is used for setting an overhaul control period;
the overhaul time node positioning unit is used for positioning an overhaul time node through the circuit breaker control file and the overhaul control period;
and the overhaul processing unit is used for carrying out overhaul processing on the circuit breaker through the overhaul time node.
It should be noted that the sequence of the embodiments of the present application is merely for description, and does not represent the advantages and disadvantages of the embodiments. And the foregoing description has been directed to specific embodiments of this specification. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
The foregoing description of the preferred embodiments of the present application is not intended to limit the invention to the particular embodiments of the present application, but to limit the scope of the invention to the particular embodiments of the present application.
The specification and drawings are merely exemplary of the application and are to be regarded as covering any and all modifications, variations, combinations, or equivalents that are within the scope of the application. It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the present application and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (6)
1. A circuit breaker protection method for circuit data identification, the method being applied to a circuit breaker protection system in communication with a circuit breaker, a monitoring element, the method comprising:
setting the monitoring element into a power distribution network cable, recording position information and determining a monitoring area;
reading monitoring data of the monitoring element, and carrying out abnormality identification through the monitoring data;
when abnormal data exist, positioning an abnormal monitoring area based on the data source position of the abnormal data, and waking up the circuit breaker in the abnormal monitoring area;
inputting the abnormal data into an abnormal positioning model, and outputting an abnormal positioning result;
matching the circuit breaker in the wake-up state based on the abnormal positioning result, and sending the circuit breaking control information to the matched circuit breaker;
receiving circuit breaking control response information, and completing circuit protection processing of the abnormal data based on the circuit breaking control response information;
wherein the circuit breaker protection system is in communication connection with an auxiliary element, the method further comprising:
when the circuit breaking control response information is not executed, obtaining an associated auxiliary element according to the matching of the matched circuit breaker;
sending auxiliary disconnection control information to the associated auxiliary element;
completing circuit protection processing of the abnormal data through the associated auxiliary element;
based on the anomaly level of the anomaly data, matching a response monitoring window;
setting a time node for sending the circuit breaking control information to the matched circuit breaker as a zero time node, and determining a last time node according to the response monitoring window;
and if the circuit breaking control response information of the last-time node still does not have the execution feedback, judging that the matched circuit breaker does not execute the circuit breaking control.
2. The method of claim 1, wherein the method further comprises:
obtaining a positioning fuzzy identifier of the abnormal positioning result;
judging whether the positioning fuzzy identification meets a preset fuzzy identification threshold value or not;
if the preset fuzzy identification threshold cannot be met, matching n circuit breakers according to the fuzzy value of the positioning fuzzy identification, wherein n is an integer greater than 1;
and taking the n circuit breakers as the matched circuit breakers.
3. The method of claim 1, wherein the monitoring element comprises a current sensor and a voltage sensor, the method further comprising:
acquiring instantaneous current and instantaneous voltage data of a power distribution network line through the current sensor and the voltage sensor;
the monitoring data is generated based on the instantaneous current, instantaneous voltage, and acquisition period.
4. A method as claimed in claim 3, wherein the method further comprises:
recording protection execution information of the circuit breaker and generating a circuit breaker control file;
generating an adjustment coefficient of the window length through the circuit breaker control file;
and adjusting the window duration of the response monitoring window according to the adjustment coefficient.
5. The method of claim 1, wherein the method further comprises:
setting an overhaul control period;
positioning an overhaul time node through the circuit breaker control file and the overhaul control period;
and carrying out maintenance treatment on the circuit breaker through the maintenance time node.
6. A circuit breaker protection system for circuit data identification, the system comprising:
the monitoring area determining module is used for setting a monitoring element into the power distribution network cable, recording position information and determining a monitoring area;
the abnormality identification module is used for reading the monitoring data of the monitoring element and carrying out abnormality identification through the monitoring data;
the circuit breaker awakening module is used for positioning an abnormal monitoring area based on the data source position of the abnormal data when the abnormal data exist, and carrying out circuit breaker awakening in the abnormal monitoring area;
the positioning result output module is used for inputting the abnormal data into an abnormal positioning model and outputting an abnormal positioning result;
the control information sending module is used for matching the circuit breakers in the wake-up state based on the abnormal positioning result and sending the circuit breaking control information to the matched circuit breakers;
the protection processing module is used for receiving the open circuit control response information and completing circuit protection processing of the abnormal data based on the open circuit control response information;
an auxiliary element obtaining unit for obtaining an associated auxiliary element according to the matching circuit breaker matching when the disconnection control response information is not executed;
a disconnection control information transmission unit for transmitting auxiliary disconnection control information to the associated auxiliary element;
the circuit protection processing unit is used for completing circuit protection processing of the abnormal data through the associated auxiliary element;
the monitoring window matching unit is used for matching a response monitoring window based on the abnormal level of the abnormal data;
the last time node determining unit is used for setting a time node for sending the circuit breaking control information to the matched circuit breaker to be a zero time node and determining the last time node according to the response monitoring window;
and the circuit breaking control execution judging unit is used for judging that the matched circuit breaker does not execute circuit breaking control if the circuit breaking control response information of the last time node still does not have execution feedback.
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| CN117394290B (en) * | 2023-12-11 | 2024-04-02 | 浙江万胜智能科技股份有限公司 | Intelligent protection method and system for circuit breaker of multipath measurement data |
| CN117387699B (en) * | 2023-12-11 | 2024-04-02 | 浙江万胜智能科技股份有限公司 | Data monitoring method and system for identifying circuit breaker abnormality |
| CN117436728A (en) * | 2023-12-20 | 2024-01-23 | 浙江万胜智能科技股份有限公司 | Control response evaluation method and system for circuit breaker |
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