CN111740501B - Subentry metering breaker device based on non-invasive technology - Google Patents
Subentry metering breaker device based on non-invasive technology Download PDFInfo
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- CN111740501B CN111740501B CN202010715906.7A CN202010715906A CN111740501B CN 111740501 B CN111740501 B CN 111740501B CN 202010715906 A CN202010715906 A CN 202010715906A CN 111740501 B CN111740501 B CN 111740501B
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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
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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)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a subentry metering 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; the server is interactively connected with the user software end. The invention can grasp and alarm the forbidden load on the monitored line in real time and perform trip protection according to the alarm threshold.
Description
Technical Field
The invention relates to the field of power system monitoring, in particular to a subentry metering breaker device based on a non-invasive technology.
Background
The traditional circuit breaker only has the protection function of breaking the circuit under the abnormal state, and the protection function is designed only aiming at the monitored line total parameters, such as the protection of faults such as total port short circuit, overload, pressure application and the like. However, for the phenomenon of violations that the overall parameters of the circuit are not out of limits, such as the use of forbidden electrical appliances in students' dormitories, the abnormal electrical appliance operation characteristics in office environments, and the load operation characteristics in industrial or commercial properties in resident environments, the traditional circuit breaker cannot be used.
Therefore, there is an urgent need for a new circuit breaker that can perform overrun judgment according to the characteristics of the electrical appliances on the circuit, and check and protect the circuit from the operation of the forbidden load.
Disclosure of Invention
The invention aims to make up the defects of the prior art and provides a non-invasive technology-based subentry metering breaker device which can grab and alarm forbidden loads on a monitored line in real time and perform tripping protection according to an alarm threshold.
In order to solve the technical problems, the invention adopts the following technical scheme:
a subentry metering 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 line and the MCU module, and is used for acquiring bus electric parameters of the monitored line in real time and transmitting the bus electric 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 utilizing a non-invasive electric power load decomposition algorithm, extracts load characteristic information therefrom, is matched with a load characteristic template library, identifies a load type, presets a load characteristic threshold value of an illegal load as an alarm threshold value, if the identified load characteristic threshold value of the load is within the alarm threshold value, the MCU module sends alarm information, sends a protection breaking signal to the relay module according to the alarm information, and 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; the motor module is connected with the relay module and is 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 through high-frequency acquisition of electrical parameters of a bus, wherein the load characteristics comprise transient characteristics of a load starting transition state, steady characteristics of the load after steady operation and duration and frequency of load operation under a fixed time window, the load characteristics within a certain threshold range are recognized as the same type of load characteristics, accumulation and classification are carried out, and characteristic clustering is carried out on similar loads within the types to obtain typical scalar values and floating thresholds of the load types, so that a load characteristic template library for automatically generating the loads is completed; after the load characteristic template library is generated, when a new cycle of work is performed on a subsequent load, traversing the generated load characteristic template library in sequence, and after the load characteristic template library is matched with a matched template library, marking the load characteristic and the related electric quantity generated by the current cycle as the matched template library to finish load characteristic identification of the load; therefore, the reciprocating circulation forms a mechanism for automatically generating the load characteristic template library in unfamiliar environments, and simultaneously generates an independent load characteristic template library with stronger pertinence aiming at 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 end.
Further, the user software end comprises a desktop web end and/or a mobile APP terminal.
Further, the non-invasive electric energy information acquisition module adopts a DSP chip.
Further, the MCU module adopts a 51 single 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 the 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 protecting a circuit for the operation of forbidden loads, which integrates a non-invasive electric energy information acquisition module and an MCU module, is based on a non-invasive load monitoring technology, and can simultaneously grasp and alarm the forbidden loads on a monitoring circuit in real time under the protection of conventional bus parameters and 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 a communication module circuit and corresponding module interface according to the present invention;
FIG. 3 is a schematic diagram of the MCU module circuit and the corresponding module interface in the present invention;
fig. 4 is a schematic diagram of a non-invasive electrical energy information acquisition module circuit and corresponding interface in 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 details. In other instances, well-known features have not been described in detail in order to avoid obscuring the embodiments of the invention.
In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present invention. It will be apparent that embodiments of the invention may be practiced without limitation to the specific details that are set forth by those skilled in the art. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments in addition to these detailed descriptions.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1 to 4, the invention provides a subentry metering 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; the server is interactively connected with the user software end.
As a further scheme of the invention: and the non-invasive electric energy information acquisition module is respectively connected with the monitored line and the MCU module, and is used for acquiring bus electric parameters of the monitored line in real time and transmitting the bus electric parameters to the MCU module. The non-invasive electric energy information acquisition module is used as monitoring equipment and is arranged at the user entrance of the monitored line. Preferably, the non-invasive power information acquisition module employs 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 performing thread control management on the communication module, the relay module and the non-invasive electric energy information acquisition module, so that the coordinated stable operation of the modules according to time sequence is ensured. The MCU module analyzes and processes the acquired bus electrical parameters based on a non-invasive load monitoring technology, specifically, a non-invasive power load decomposition algorithm is utilized to decompose the bus electrical parameters, load characteristic information is extracted from the bus electrical parameters and is matched with a load characteristic template library, a load type is identified, a load characteristic threshold value of an illegal load is preset as an alarm threshold value, if the identified load characteristic threshold value of the load is within the alarm threshold value, the MCU module sends alarm information, the MCU module sends a protection breaking signal to the relay module according to the alarm information, and the MCU module further uploads the processed bus electrical parameters, the load characteristic information, the load characteristic template library, the load type and the alarm information to the server through the communication module. Preferably, the MCU module adopts a 51 single-chip microcomputer.
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 through 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 of the load after steady operation, duration, frequency and the like of load operation under a fixed time window, recognizing the load characteristics within a certain threshold range as the same type of load characteristics, accumulating and classifying the load characteristics, and performing characteristic clustering on similar loads within the types to obtain typical scalar values and floating thresholds of the load types, so that a load characteristic template library for automatically generating the loads is completed; after the load characteristic template library is generated, when a new cycle of work is performed on a subsequent load, traversing the generated load characteristic template library in sequence, and after the load characteristic template library is matched with a matched template library, marking the load characteristic and the related electric quantity generated by the current cycle as the matched template library to finish load characteristic identification of the load; therefore, a mechanism for automatically generating the load characteristic template library in an unfamiliar environment is formed by reciprocating circulation, and meanwhile, aiming at different monitoring environments, an independent load characteristic template library with high pertinence is generated, and compared with the identification precision of a general template library, the identification precision of the load characteristic template library is greatly improved.
The alarm threshold is set by a background system to set a load characteristic threshold which is judged to be forbidden load in the equipment. For example, in an office environment, an electric heater can be set as forbidden load, and the running characteristic of the electric heater is that the basic steady-state power is more than 800W, and the running characteristic of the electric heater has obvious fluctuation characteristics, namely, 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 800W, the running frequency is 20 times/min, meanwhile, the floating power of +/-3% (standard of the electric heating load fluctuation threshold range) and the floating frequency of +/-2 times/min are added as characteristic parameters, the electric heater is trained, and when the training times are enough, a corresponding electric heater load characteristic library is 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 characteristic library is identified, the device immediately alarms the forbidden load to the system, and meanwhile, drives the actuating mechanism to disconnect a loop accessed by the corresponding forbidden load.
As a further scheme of the invention: and 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. Preferably, the relay module employs an optocoupler 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 and drives the electric operating mechanism through photoelectric isolation to execute 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 the shell of the molded case circuit breaker.
As a further scheme of the invention: the server is mainly used for storing and displaying the data such as the electrical parameters of the bus, the sub-load characteristic information, the alarm information and the like processed by the MCU module, and the server and the MCU module are connected with each other through the communication module, so that the MCU module can push the processed data to the server, and the server can send instructions to acquire the processed data of the MCU module.
As a further scheme of the invention: the user software end is connected with the server in an interactive way through the public network and used for acquiring data stored and displayed on the server, wherein the data can be directly pushed to the user software end by the server or acquired by the user software end through sending a request. The user can collect, alarm and manage the inquiry of the result through the user software end. Preferably, the user software end comprises a desktop web end and/or a mobile APP terminal.
The invention integrates the non-invasive electric energy information acquisition module and the MCU module, realizes real-time capturing and alarming of forbidden loads on the monitoring line under the protection of conventional bus parameters based on a non-invasive load monitoring technology, and can perform tripping protection according to a preset alarming threshold.
In view of the foregoing, the present invention is not limited to the above-described embodiments, and those skilled in the art may devise other embodiments that fall within the spirit and scope of the invention.
Claims (8)
1. The breaker device based on the 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 line and the MCU module, and is used for acquiring bus electric parameters of the monitored line in real time and transmitting the bus electric 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 utilizing a non-invasive electric power load decomposition algorithm, extracts load characteristic information therefrom, is matched with a load characteristic template library, identifies a load type, presets a load characteristic threshold value of an illegal load as an alarm threshold value, if the identified load characteristic threshold value of the load is within the alarm threshold value, the MCU module sends alarm information, sends a protection breaking signal to the relay module according to the alarm information, and 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;
the motor module is connected with the relay module and is used for receiving a protection breaking signal sent by the relay module and driving the electric operating mechanism through photoelectric isolation to execute breaking protection for a circuit;
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 through high-frequency acquisition of electrical parameters of a bus, wherein the load characteristics comprise transient characteristics of a load starting transition state, steady characteristics of the load after steady operation and duration and frequency of load operation under a fixed time window, the load characteristics in a threshold range are recognized as the same type of load characteristics, accumulation and classification are carried out, and characteristic clustering is carried out on similar loads in the types to obtain typical scalar values and floating threshold values of the load types, so that a load characteristic template library for automatically generating the loads is completed;
after the load characteristic template library is generated, when a new cycle of work is performed on a subsequent load, traversing the generated load characteristic template library in turn, and then adapting to a matched template library, namely marking the load characteristic and the related electric quantity generated by the current cycle as an adaptive template library to finish load characteristic identification of the load;
therefore, the reciprocating circulation forms a mechanism for automatically generating the load characteristic template library in unfamiliar environments, and simultaneously, a targeted independent load characteristic template library is generated aiming at different monitoring environments.
2. A non-invasive technique based itemized breaker arrangement according to claim 1, characterized in that the MCU module is interactively connected with the server through the communication module; and the server is interactively connected with the user software end.
3. A non-invasive technology based itemized breaker arrangement according to claim 2, characterized in that the user software side comprises a desktop web side and/or a mobile APP terminal.
4. The non-invasive technique based itemized circuit breaker apparatus according to claim 1, wherein the non-invasive electrical energy information acquisition module employs a DSP chip.
5. The non-invasive technology based itemized metering circuit breaker device according to claim 1, wherein the MCU module employs a 51-chip microcomputer.
6. A non-invasive technique based itemized circuit breaker arrangement according to claim 1, wherein the relay module employs an optocoupler isolation circuit.
7. A non-intrusive technology based itemized metering breaker device according to claim 1, wherein the communications module employs a network chip with a built-in PHY.
8. The non-invasive technology based itemized circuit breaker device according to claim 1, wherein the non-invasive electrical energy information acquisition module, the MCU module, the relay module, the motor module and the communication module are integrated in a housing of a molded case circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010715906.7A CN111740501B (en) | 2020-07-23 | 2020-07-23 | Subentry metering breaker device based on non-invasive technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010715906.7A CN111740501B (en) | 2020-07-23 | 2020-07-23 | Subentry metering breaker device based on non-invasive technology |
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| Publication Number | Publication Date |
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| CN111740501A CN111740501A (en) | 2020-10-02 |
| CN111740501B true CN111740501B (en) | 2023-08-18 |
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| CN202010715906.7A Active CN111740501B (en) | 2020-07-23 | 2020-07-23 | Subentry metering breaker device based on non-invasive technology |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108132379A (en) * | 2017-12-11 | 2018-06-08 | 武汉大学 | Non-intrusion type load monitor system and recognition methods based on cloud platform |
| CN108173347A (en) * | 2018-03-06 | 2018-06-15 | 南京赫曦电气有限公司 | Non-intrusion type based on Internet of Things Network Communication matches power load monitoring device and method |
| CN110288113A (en) * | 2019-03-19 | 2019-09-27 | 浙江工业大学 | A kind of non-intrusion type load intelligent identifying system |
| CN110672934A (en) * | 2019-08-23 | 2020-01-10 | 北京中电飞华通信股份有限公司 | Non-invasive load identification method, terminal and 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 |
| 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 |
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2020
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