CN111740501A - Subentry metering circuit breaker device based on non-invasive technology - Google Patents
Subentry metering circuit breaker device based on non-invasive technology Download PDFInfo
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- CN111740501A CN111740501A CN202010715906.7A CN202010715906A CN111740501A CN 111740501 A CN111740501 A CN 111740501A CN 202010715906 A CN202010715906 A CN 202010715906A CN 111740501 A CN111740501 A CN 111740501A
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/068—Arrangements for indicating or signaling faults
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
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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
-
- 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)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a subentry metering circuit breaker device based on a non-invasive technology, which comprises a non-invasive electric energy information acquisition module, an MCU module, a relay module, a motor module and a communication module. The input end of the non-invasive electric energy information acquisition module is connected with the monitored line, and the output end of the non-invasive electric energy information acquisition module is connected with the input end of the MCU module; the output end of the MCU module is connected with the input end of the relay module; the output end of the relay module is connected with the input end of the motor module; the MCU module is also in interactive connection with the server through the communication module; and the server is interactively connected with the user software terminal. The invention can capture and alarm the forbidden load on the monitored line in real time and carry out trip protection according to the alarm threshold value.
Description
Technical Field
The invention relates to the field of power system monitoring, in particular to a subentry metering circuit breaker device based on a non-invasive technology.
Background
The traditional circuit breaker only has the protection function of breaking a circuit under an abnormal state, and the protection function is designed only aiming at the monitored line general parameters, such as the protection of faults of general port short circuit, overload, pressure application and the like. And for the illegal phenomenon that the overall parameters on the line are not over-limited, such as the use of forbidden electric appliances in students' dormitories, the abnormal electric appliance operation characteristics in office environments, and the industrial or commercial load operation characteristics in resident environments, the traditional circuit breaker can not be used.
Therefore, a novel circuit breaker capable of performing overrun judgment according to the characteristics of the electrical appliances on the line is urgently needed, and investigation and line protection are performed on the operation of forbidden loads.
Disclosure of Invention
The invention aims to make up the defects of the prior art, and provides a subentry metering circuit breaker device based on a non-invasive technology, which can capture and alarm forbidden loads appearing on a monitored line in real time and carry out trip protection according to an alarm threshold.
In order to solve the technical problems, the invention adopts the following technical scheme:
a subentry metering circuit breaker device based on a non-invasive technology comprises a non-invasive electric energy information acquisition module, an MCU module, a relay module, a motor module and a communication module; the non-invasive electric energy information acquisition module is respectively connected with the monitored circuit and the MCU module and is used for acquiring bus electrical parameters of the monitored circuit in real time and transmitting the bus electrical parameters to the MCU module; the MCU module is respectively connected with the communication module, the relay module and the non-invasive electric energy information acquisition module, decomposes bus electric parameters by using a non-invasive electric power load decomposition algorithm, extracts load characteristic information from the bus electric parameters, matches the load characteristic information with the load characteristic template library, identifies a load type, presets a load characteristic threshold of an illegal load as an alarm threshold, and sends out alarm information if the identified load characteristic threshold of the load is within the alarm threshold, the MCU module sends a protection breaking signal to the relay module according to the alarm information, and the MCU module uploads the processed bus electric parameters, the load characteristic information, the load characteristic template library, the load type and the alarm information to a server through the communication module; the relay module is respectively connected with the MCU module and the motor module, and is used for isolating and converting the protection breaking signal sent by the MCU module and sending the protection breaking signal to the motor module; and the motor module is connected with the relay module and used for receiving the protection breaking signal sent by the relay module and driving the electric operating mechanism through photoelectric isolation to execute breaking protection for the circuit.
Further, the load characteristic template library is an independent load characteristic template library which is generated autonomously, and the specific process is as follows: extracting load characteristics reflecting independent loads by high-frequency acquisition of electrical parameters of a bus, wherein the load characteristics comprise transient characteristics of a load starting transition state, steady-state characteristics after the load runs stably and duration and frequency of load running in a fixed time window, identifying the load characteristics in a certain threshold range as load characteristics of the same class, accumulating and classifying the load characteristics, performing characteristic clustering on similar loads in the class to obtain a typical scalar value and a floating threshold of the load class, and thus completing automatic generation of a load characteristic template library of the load; after the load characteristic template base is generated, when a subsequent load performs a new round of working cycle, the generated load characteristic template base is traversed in sequence, and when the load characteristic template base is matched with a matched template base, the load characteristic and the related electric quantity generated by the current working cycle are marked as the matched template base, so that the load characteristic identification of the load is completed; therefore, a mechanism for automatically generating the load characteristic template library in a strange environment is formed by reciprocating circulation, and meanwhile, an independent load characteristic template library with high pertinence is generated for different monitoring environments.
Further, the MCU module is interactively connected with the server through the communication module; and the server is interactively connected with the user software terminal.
Further, the user software terminal comprises a desktop web terminal and/or a mobile APP terminal.
Furthermore, the non-invasive electric energy information acquisition module adopts a DSP chip.
Further, the MCU module adopts a 51-chip microcomputer.
Further, the relay module adopts an optical coupling isolation circuit.
Further, the communication module adopts a network chip with a built-in PHY.
Further, the non-invasive electric energy information acquisition module, the MCU module, the relay module, the motor module and the communication module are integrated in a shell of a molded case circuit breaker.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a circuit breaker device capable of checking and processing the operation of forbidden loads and protecting circuits, which integrates a non-invasive electric energy information acquisition module and an MCU module, realizes real-time capture and alarm of the forbidden loads on a monitored circuit under the protection of conventional bus parameters based on a non-invasive load monitoring technology, and can perform trip protection according to a preset alarm threshold.
Drawings
In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings.
FIG. 1 is a system architecture diagram of the present invention;
FIG. 2 is a schematic diagram of the interface of the communication module circuit and the corresponding module of the present invention;
FIG. 3 is a schematic diagram of the interface between the MCU module circuit and the corresponding module in the present invention;
fig. 4 is a schematic diagram of a non-invasive electric energy information acquisition module circuit and a corresponding interface according to the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail so as not to obscure the embodiments of the invention.
In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The following detailed description of preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1 to 4, the itemized metering circuit breaker apparatus based on the non-invasive technology provided by the present invention includes a non-invasive electric energy information collecting module, an MCU module, a relay module, a motor module, and a communication module. The input end of the non-invasive electric energy information acquisition module is connected with the monitored line, and the output end of the non-invasive electric energy information acquisition module is connected with the input end of the MCU module; the output end of the MCU module is connected with the input end of the relay module; the output end of the relay module is connected with the input end of the motor module; the MCU module is also in interactive connection with the server through the communication module; and the server is interactively connected with the user software terminal.
As a further scheme of the invention: the non-invasive electric energy information acquisition module is respectively connected with the monitored circuit and the MCU module and is used for acquiring the bus electrical parameters of the monitored circuit in real time and transmitting the bus electrical parameters to the MCU module. The non-invasive electric energy information acquisition module is used as monitoring equipment and is installed at a user entrance of a monitored line. Preferably, the non-invasive electric energy information acquisition module adopts a DSP chip.
As a further scheme of the invention: and the MCU module is respectively connected with the communication module, the relay module and the non-invasive electric energy information acquisition module, and is used for carrying out thread control management on the communication module, the relay module and the non-invasive electric energy information acquisition module and ensuring that all the modules cooperatively and stably operate according to a time sequence. The MCU module analyzes and processes the acquired bus electrical parameters based on a non-invasive load monitoring technology, specifically, the bus electrical parameters are decomposed by a non-invasive power load decomposition algorithm, load characteristic information is extracted from the bus electrical parameters and is matched with the load characteristic template library, the load type is identified, the load characteristic threshold of an illegal load is preset as an alarm threshold, if the identified load characteristic threshold of the load is within the alarm threshold, the MCU module sends out alarm information, the MCU module sends a protection breaking signal to the relay module according to the alarm information, and the MCU module uploads the processed bus electrical parameters, the load characteristic information, the load characteristic template library, the load type and the alarm information to a server through the communication module. Preferably, the MCU module adopts a 51-chip microcomputer.
The load characteristic template library is an independent load characteristic template library which is generated independently, and the specific process is as follows: extracting load characteristics reflecting independent loads by high-frequency acquisition of electrical parameters of a bus, wherein the load characteristics comprise transient characteristics of a load starting transition state, steady-state characteristics after the load runs stably, load running duration and frequency in a fixed time window and the like, identifying the load characteristics in a certain threshold range as the same type of load characteristics, accumulating and classifying the load characteristics, performing characteristic clustering on similar loads in the type to obtain a typical scalar value and a floating threshold of the load type, and thus completing automatic load generation of a load characteristic template library; after the load characteristic template base is generated, when a subsequent load performs a new round of working cycle, the generated load characteristic template base is traversed in sequence, and when the load characteristic template base is matched with a matched template base, the load characteristic and the related electric quantity generated by the current working cycle are marked as the matched template base, so that the load characteristic identification of the load is completed; therefore, the reciprocating circulation forms a mechanism for automatically generating the load characteristic template library in a strange environment, and meanwhile, an independent load characteristic template library with strong pertinence is generated for different monitoring environments, so that the identification precision is greatly improved compared with that of a general template library.
The alarm threshold is set by a background system, wherein the alarm threshold is set by a load characteristic threshold which is judged to be an illegal load in the equipment. For example, in an office environment, the electric heater can be set as an illegal load, the running characteristic of the electric heater is that the basic steady-state power is more than 800W, and the running characteristic has an obvious fluctuation characteristic, namely that the electric heater is started and stopped 15-20 times per minute. Therefore, the load characteristic threshold power of the electric heater can be set to be 800W, the running frequency is 20 times/minute, plus or minus 3% (standard of fluctuation threshold range of electric heating type load) floating power and plus or minus 2 times/minute floating frequency are added at the same time to serve as characteristic parameters, the electric heater is trained, when the training frequency is enough, a corresponding electric heater load characteristic library can be generated in the electric heater, and at the moment, the electric heater characteristic library is set to be forbidden load. Subsequently, once the load meeting the feature library is identified, the equipment immediately gives an alarm for illegal loads to the system, and simultaneously drives an actuating mechanism to disconnect a loop accessed by the corresponding illegal loads.
As a further scheme of the invention: and the relay module is respectively connected with the MCU module and the motor module, is used for isolating and converting the protection breaking signal sent by the MCU module and sends the protection breaking signal to the motor module. Preferably, the relay module adopts an optical coupling isolation circuit.
As a further scheme of the invention: and the motor module is connected with the relay module, receives the protection breaking signal sent by the relay module, drives the electric operating mechanism through photoelectric isolation and executes breaking protection for the circuit. Preferably, the electric operating mechanism is a molded case electric operating mechanism.
As a further scheme of the invention: and the communication module is respectively and interactively connected with the MCU module and the server and is used for realizing data transmission and communication between the MCU module and the server. Preferably, the communication module employs a network chip with a built-in PHY.
As a further scheme of the invention: the non-invasive electric energy information acquisition module, the MCU module, the relay module, the motor module and the communication module are integrated in a shell of the molded case circuit breaker.
As a further scheme of the invention: the server is mainly used for storing and displaying data such as bus electrical parameters, subentry load characteristic information and alarm information processed by the MCU module, the server and the MCU module are in interactive connection through the communication module, the processed data can be mainly pushed to the server by the MCU module, and the data processed by the MCU module can also be obtained by sending an instruction through the server.
As a further scheme of the invention: and the user software terminal is interactively connected with the server through a public network and is used for acquiring data stored and displayed on the server, wherein the data can be directly pushed to the user software terminal by the server or acquired by the user software terminal by sending a request. The user can carry out acquisition, alarm and management result query through the user software terminal. Preferably, the user software terminal comprises a desktop web terminal and/or a mobile APP terminal.
The invention integrates the non-invasive electric energy information acquisition module and the MCU module, realizes real-time capture and alarm of forbidden loads on a monitoring line under the protection of conventional bus parameters based on the non-invasive load monitoring technology, and can perform trip protection according to a preset alarm threshold.
In summary, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can propose other embodiments within the technical teaching of the present invention, but these embodiments are included in the scope of the present invention.
Claims (9)
1. A subentry metering circuit breaker device based on a non-invasive technology is characterized by comprising a non-invasive electric energy information acquisition module, an MCU module, a relay module, a motor module and a communication module;
the non-invasive electric energy information acquisition module is respectively connected with the monitored circuit and the MCU module and is used for acquiring bus electrical parameters of the monitored circuit in real time and transmitting the bus electrical parameters to the MCU module;
the MCU module is respectively connected with the communication module, the relay module and the non-invasive electric energy information acquisition module, decomposes bus electric parameters by using a non-invasive electric power load decomposition algorithm, extracts load characteristic information from the bus electric parameters, matches the load characteristic information with the load characteristic template library, identifies a load type, presets a load characteristic threshold of an illegal load as an alarm threshold, and sends out alarm information if the identified load characteristic threshold of the load is within the alarm threshold, the MCU module sends a protection breaking signal to the relay module according to the alarm information, and the MCU module uploads the processed bus electric parameters, the load characteristic information, the load characteristic template library, the load type and the alarm information to a server through the communication module;
the relay module is respectively connected with the MCU module and the motor module, and is used for isolating and converting the protection breaking signal sent by the MCU module and sending the protection breaking signal to the motor module;
and the motor module is connected with the relay module and used for receiving the protection breaking signal sent by the relay module and driving the electric operating mechanism through photoelectric isolation to execute breaking protection for the circuit.
2. The apparatus of claim 1, wherein the load signature template library is an independent load signature template library generated autonomously, and the specific process is as follows:
extracting load characteristics reflecting independent loads by high-frequency acquisition of electrical parameters of a bus, wherein the load characteristics comprise transient characteristics of a load starting transition state, steady-state characteristics after the load runs stably and duration and frequency of load running in a fixed time window, identifying the load characteristics in a certain threshold range as load characteristics of the same class, accumulating and classifying the load characteristics, performing characteristic clustering on similar loads in the class to obtain a typical scalar value and a floating threshold of the load class, and thus completing automatic generation of a load characteristic template library of the load;
after the load characteristic template base is generated, when a subsequent load performs a new round of working cycle, the generated load characteristic template base is traversed in sequence, and when the load characteristic template base is matched with a matched template base, the load characteristic and the related electric quantity generated by the current working cycle are marked as the matched template base, so that the load characteristic identification of the load is completed;
therefore, a mechanism for automatically generating the load characteristic template library in a strange environment is formed by reciprocating circulation, and meanwhile, an independent load characteristic template library with high pertinence is generated for different monitoring environments.
3. The itemized metering circuit breaker device based on the non-invasive technology according to claim 1 or 2, wherein the MCU module is interactively connected with the server through the communication module; and the server is interactively connected with the user software terminal.
4. The apparatus of claim 3, wherein the user software terminal comprises a desktop web terminal and/or a mobile APP terminal.
5. The device as claimed in claim 1 or 2, wherein the non-invasive power information acquisition module is a DSP chip.
6. The itemized metering circuit breaker device based on the non-intrusive technology according to claim 1 or 2, characterized in that the MCU module adopts a 51-chip microcomputer.
7. A subentry metering circuit breaker apparatus based on non-intrusive technology as defined in claim 1 or 2, characterized in that the relay module employs an optical coupling isolation circuit.
8. The apparatus according to claim 1 or 2, wherein the communication module employs a network chip with a built-in PHY.
9. The itemized metering circuit breaker apparatus based on the non-intrusive technology as set forth in claim 1 or 2, wherein the non-intrusive power information collection module, the MCU module, the relay module, the motor module and the communication module are integrated in a case of a molded case circuit breaker.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010715906.7A CN111740501B (en) | 2020-07-23 | 2020-07-23 | Subentry metering breaker device based on non-invasive technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010715906.7A CN111740501B (en) | 2020-07-23 | 2020-07-23 | Subentry metering breaker device based on non-invasive technology |
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| CN111740501A true CN111740501A (en) | 2020-10-02 |
| CN111740501B CN111740501B (en) | 2023-08-18 |
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| CN210490558U (en) * | 2019-10-21 | 2020-05-08 | 北京人民电器厂有限公司 | Modular electric power information monitoring system |
| CN210722907U (en) * | 2019-09-17 | 2020-06-09 | 北京京人电器有限公司 | Circuit breaker with at least two poles |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5196982A (en) * | 1991-08-23 | 1993-03-23 | The Fleming Group | Electrical power monitoring system |
| CN105550798A (en) * | 2015-12-07 | 2016-05-04 | 河南许继仪表有限公司 | Non-intruding type load decomposition and monitoring system |
| CN106124852A (en) * | 2016-06-13 | 2016-11-16 | 国网天津宝坻供电有限公司 | Non-intrusion type load monitor system |
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