CN114301173A - Intelligent safety power utilization management and control system based on miniature management terminal - Google Patents
Intelligent safety power utilization management and control system based on miniature management terminal Download PDFInfo
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Abstract
The invention discloses a smart safe electricity utilization management and control system based on a micro management terminal, which comprises a metering acquisition system, a data transmission system, a management platform, an alternating current residual current Internet of things monitoring terminal, a system host, a sensing unit, an intelligent operating system, an input unit, an output unit and a background server, wherein the management platform is connected with the system host, and the system host is connected with the alternating current residual current Internet of things monitoring terminal. According to the intelligent safety electricity utilization management and control system based on the micro management terminal, real-time operation data of an electric line are collected and uploaded through the micro intelligent circuit breaker, environment data are obtained through sensors of temperature, humidity, gas and the like, then the environment data are transmitted to the micro edge computing terminal, load data of temperature, voltage, current and the like of electrical equipment are analyzed and compared by means of temperature and humidity effect change and the basic principle of electromagnetic induction, and the control system conducts various data linear algorithm analysis on the changed amplitude value.
Description
Technical Field
The invention relates to the technical field of power distribution and utilization safety, energy conservation and power utilization, in particular to an intelligent safety power utilization management and control system based on a micro management terminal.
Background
The intelligent safety power utilization management and control system is an intelligent system for carrying out intelligent safety power utilization management and control, in recent years, along with production and management unit's electric line is old, the line hidden danger is many and disguised strong, numerous small and micro enterprises lack professional electrician, the electric hidden danger can not directly perceived to the naked eye, a series of difficult problems such as various hidden dangers are difficult to in time arrange for traditional detection means, make the monitoring and the early warning of electric conflagration hardly put in place, electric circuit emergence electric fault is the main factor that leads to electric conflagration to produce, for example, electric leakage, short circuit, contact failure, short circuit electric arc, etc. common electric fault. For the above factors of electrical fire, the conventional method for detecting electrical fire cannot meet the requirements. The invention provides a series of electric fire identification methods, which indicate the advancing direction for developing a monitoring model of the electric fire later, starts from the root of the occurrence of the electric fire by relying on an electric quantity characteristic identification technology, utilizes the identification of dangerous electric appliances and the capture of dangerous electric behaviors to accurately cut off the dangerous electric appliances, simultaneously utilizes a large amount of electric quantity characteristic identification monitoring terminals, introduces a multi-sensor data fusion technology into the electric fire monitoring field, organically combines advanced technologies such as signal processing, wireless/wired communication and the like, supports the advanced data mining technology of a cloud large data platform, realizes the purpose of predictively protecting the operation and abnormal electric events of the dangerous electric appliances in the area, has subversive theoretical significance on the traditional electric fire protection, and has greater research value. Simultaneously, mass data of the electricity consumption of the household user are collected, and plug and play of the distributed equipment is realized; the method adopts an informatization means, utilizes a price lever to mobilize the participation of power users in demander response, and realizes a demand side real-time response optimization technology based on novel load characteristics; integrating and developing a power distribution side/demand side comprehensive energy management system of energy management complete equipment, a wireless communication protocol and a demand side real-time response optimization technology; the demonstration engineering construction based on the comprehensive energy management system on the distribution network side/demand side is developed, a feasible reference scheme is provided for the technical problem of dual-carbon and electricity-limiting policy landing, and along with the continuous development of science and technology, the manufacturing process requirements of people on the intelligent safety electricity utilization management and control system are higher and higher.
The existing intelligent safety electricity utilization management and control system has certain disadvantages when in use, and several typical applications of the electrical fire detection system are CAN bus technology, Zigbee technology, PLC technology and the like, but a good solution is not provided for the problem of high false alarm rate of electrical fire detection; a multi-sensor data fusion fire monitoring model based on BP neural network and fuzzy logic technology improves fire detection precision to a certain extent, but detection accuracy is lower; the fuzzy BP neural network is directly used for carrying out fusion recognition on the detected electric fire characteristic parameters, certain detection precision is guaranteed, but the time sequence characteristics of the detection parameters are not considered, so that the anti-interference performance is poor. Although the upper electric fire detection method has certain theoretical significance, the upper electric fire detection method is difficult to be put into practice when falling to the ground in an area with high detection precision requirements, an effective solution is not provided at present, certain adverse effects are brought to the using process of people, and therefore the intelligent safety electricity utilization management and control system based on the micro management terminal is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an intelligent safety electricity utilization management and control system based on a micro management terminal, which is characterized in that real-time running data of an electric line is collected and uploaded through a micro intelligent circuit breaker, environment data is obtained by utilizing sensors of temperature, humidity, gas and the like, then the environment data is transmitted to a micro edge computing terminal, load data of temperature, voltage, current and the like of electric equipment are analyzed and compared by means of temperature and humidity effect change and the basic principle of electromagnetic induction, the control system performs various data linear algorithm analysis on the changed amplitude value, and the problems in the background technology can be effectively solved.
(II) technical scheme
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a wisdom safety power consumption management and control system based on miniature management terminal, includes measurement collection system, data transmission system, management platform, exchanges residual current thing networking monitor terminal, system's host computer, sensing unit, intelligent operating system, opens into the unit, opens out unit, backend server, management platform connected system host computer, system's host computer is connected and is exchanged residual current thing networking monitor terminal, data transmission system and intelligent operating system, data transmission system connects measurement collection system, measurement collection system connects sensing unit, intelligent operating system connects into the unit, open into the unit and connect out the unit, open out the unit connection backend server.
As an optimal technical scheme, the management platform controls a system host, the system host controls the alternating-current residual current Internet of things monitoring terminal and the intelligent operating system, and the system host receives data of the data transmission system, the metering acquisition system and the sensing unit.
As an optimal technical scheme of this application, open into unit connection isolator module, the intelligent ammeter module is connected to the isolator module, the control module is taken to the bluetooth is connected to the intelligent ammeter module, the user side is connected to the control module is taken to the bluetooth, the remote control module is connected to the user side, intelligent ammeter module, bluetooth are taken control module, user side and are for opening out the unit.
As a preferable technical scheme of the application, the method comprises the following steps:
s1: when the loop current is kept at the rated current value set by the miniature circuit breaker and below, the heat effect generated by the current causes the metal element to generate small deformation, and the automatic tripping mechanism cannot be tripped; when the loop current exceeds the set rated current, the temperature of a metal element of the miniature circuit breaker rises, enough thermal deformation can be generated, the free tripping mechanism is pushed to trip, at the moment, a moving contact and a static contact in a contact system are separated, the current loop is cut off, and the current overcurrent protection function is realized;
s2: the short-circuit protection system senses the change of loop current by the solenoid electromagnet, when the loop current is in a normal value or below a set short-circuit protection value, the electromagnetic attraction force generated by the solenoid electromagnet cannot overcome the acting force of a counter spring, and an iron core is kept at an initial position; when the current loop has short-circuit fault, the current is increased sharply, the electromagnetic force generated by the solenoid electromagnet overcomes the action of the counter-force spring and is opened quickly, the current loop is cut off, and the current short-circuit protection function is realized;
s3: the free tripping mechanism has the function that when the circuit has an overcurrent fault or other signals for forbidding closing commands, even if a handle of the miniature circuit breaker is operated to close the miniature circuit breaker, a moving contact of the miniature circuit breaker is still kept at a breaking position; when the circuit has over-current or short-circuit fault and sends out breaking instruction, the miniature circuit breaker is tripped to cut off the current circuit;
s4: the arc extinguishing system comprises an arc guide plate and an arc extinguishing chamber, and has the functions of realizing the trend of continuously increasing the limiting current, namely the current limiting function, through the action on electric arcs when the small-sized circuit breaker breaks off overlarge short-circuit current, and finally extinguishing the electric arcs.
As an optimal technical scheme, the system host has an intelligent power utilization management function, power utilization information of users is monitored in real time, the management platform is provided with a data analysis function, a basis is provided for management departments, and scientific and intelligent power utilization management is achieved.
As a preferred technical scheme, the management platform captures dynamic changes of the user electrical load sharply, extracts electrical variable quantities such as voltage, current, active power and power factor, identifies changes of the internal load of the user by comparing the electrical variable quantities with an electrical quantity characteristic identification feature library, and constructs a refined user portrait.
As an optimal technical scheme of this application, the MCU treater of ultra-low power consumption is adopted to the system host computer, gathers real time monitoring and shows values such as residual current, temperature, voltage, electric current and sends, adopts multiple modes such as local audible and visual alarm, cell-phone APP remote monitoring, SMS warning, telephone notification, to alarm signal and control signal, instructs the warning position, record and save alarm information.
As an optimal technical scheme of this application, intelligence operating system passes through miniature intelligent circuit breaker collection, upload electric circuit real-time operation data, utilize the humiture, sensor such as gas acquire environmental data, and carry miniature edge calculation terminal in, load data such as with the help of humiture effect change and electromagnetic induction carry out analysis and compare appearance to electrical equipment temperature and load data such as voltage electric current, control system carries out various data linear algorithm analysis to the amplitude numerical value of change, satisfy when handling numerical value and set for electric definite value and warning preset value, equipment auto-power-off, send alarm sound or light letter simultaneously, the system connection has touch display screen to be used for operation management.
(III) advantageous effects
Compared with the prior art, the invention provides an intelligent safety electricity utilization management and control system based on a micro management terminal, which has the following beneficial effects: the intelligent safety electricity utilization management and control system based on the micro management terminal aims at the problems of potential safety hazards and electricity waste in the existing electricity utilization technology, electric line real-time operation data are collected and uploaded through the micro intelligent circuit breaker, environment data are obtained through temperature, humidity, gas and other sensors and then are conveyed to the micro edge computing terminal, load data such as temperature, voltage and current of electrical equipment are analyzed and compared by means of basic principles of temperature and humidity effect change and electromagnetic induction, the control system conducts various data linear algorithm analysis on changed amplitude values, when the processed values meet set electrical fixed values and alarm preset values, the equipment can automatically cut off power, alarm sound or light signals are sent out to remind people, the system is connected with a touch display screen for operation and management of customers, the intelligent safety electricity utilization management and control system truly achieves the purposes that the potential safety hazards of electrical fires are found out in advance, The method has the advantages that the method is managed early, the conversion from people's air defense to technical air defense is realized, the problems of few personnel and difficult supervision are solved, the fire caused by the hidden danger of an electric circuit is prevented, the occurrence of the electric fire is restrained from the source, the method is a new mode of electric safe operation, the technologies of centralized load identification and management control, real-time energy internet demand response, interconnection of a power grid and users and the like are integrated, a hardware interface is unified, and various wireless and power line carrier communication protocols are supported; the leakage current constant value range setting (10mA-1000mA) can be customized, and the potential safety hazard that a human body cannot completely get rid of when the human body touches 30mA current is solved; the leakage self-checking work can be regularly executed every month, and the difficulty that 90% of users manually check the leakage button every month is overcome; the system can remotely inquire and set parameters such as three-phase current, three-phase voltage, leakage current, rated current value, over-voltage and under-voltage protection value, leakage action value, tripping times and the like in real time according to seasonal power load characteristics and line aging conditions, does not need to set equipment operation parameters on site, can monitor the circuit operation condition in real time, feeds back faults such as short circuit, over-current and over-voltage of the line in time, acquires early warning information of the line in advance, finds potential safety hazards of the line in time, and effectively reduces the occurrence of accidents such as fire, electric shock and the like; the intelligent electric energy meter with relatively large rated current (>100A) generally adopts a micro circuit breaker mode to realize various fee control functions and realize the intelligent control of various distributed electrical equipment, the micro circuit breaker is used together with the intelligent electric energy meter and can realize the functions of automatic brake opening and power failure due to arrearages and automatic switch closing and power continuation for fee charge, the micro circuit breaker and the electric energy meter are connected by two wires which are respectively a control signal wire and a feedback wire, the control wire adopts an AC220V level mode, a control unit supplies power to obtain power from the control signal wire, the power can be temporarily used from a phase wire during the brake pulling action, the leakage current of the phase wire after the action is finished is less than 0.2mA, a feedback signal also adopts an AC220V level mode, the feedback signal is output after being internally connected with a 100k omega resistor in series, and the control unit comprises a direct current motor for driving an actuating mechanism, drive circuit breaker separating brake and combined floodgate through the motor action to by the actual position of position sensor detection motor, whole wisdom safety power consumption management and control system simple structure, convenient operation, the effect of use is better for traditional mode.
Drawings
Fig. 1 is a schematic diagram of an overall structure of an intelligent security electricity management and control system based on a micro management terminal.
Fig. 2 is a schematic diagram of a circuit breaker connection structure in an intelligent safety power management and control system based on a micro management terminal according to the present invention.
Fig. 3 is a schematic structural diagram of a miniature circuit breaker in an intelligent safety electricity management and control system based on a miniature management terminal.
Fig. 4 is a schematic structural diagram of a system block diagram of a miniature circuit breaker in an intelligent safety electricity utilization management and control system based on a miniature management terminal.
Fig. 5 is a schematic structural diagram of a working schematic diagram of a UCC28910 chip in the intelligent security electricity management and control system based on the micro management terminal.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and the detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-5, an intelligent security electricity utilization management and control system based on miniature management terminal, includes measurement collection system, data transmission system, management platform, exchanges residual current thing networking monitor terminal, system host computer, sensing unit, intelligent operating system, opens into the unit, opens out unit, backend server, management platform connected system host computer, system host computer connects and exchanges residual current thing networking monitor terminal, data transmission system and intelligent operating system, data transmission system connects measurement collection system, measurement collection system connects the sensing unit, intelligent operating system connects the unit of opening into, open into unit connection and open out the unit, open out unit connection backend server.
Further, the management platform controls a system host, the system host controls the alternating-current residual current internet of things monitoring terminal and the intelligent operating system, and the system host receives data of the data transmission system, the metering acquisition system and the sensing unit.
Furthermore, it connects the isolator module to drive the unit, the intelligent ammeter module is connected to the isolator module, the control module is taken to the bluetooth is connected to the intelligent ammeter module, the control module is taken to the bluetooth connects the user, the remote control module is connected to the user, intelligent ammeter module, bluetooth are taken control module, user and are driven the unit.
Further, the method comprises the following steps:
s1: when the loop current is kept at the rated current value set by the miniature circuit breaker and below, the heat effect generated by the current causes the metal element to generate small deformation, and the automatic tripping mechanism cannot be tripped; when the loop current exceeds the set rated current, the temperature of a metal element of the miniature circuit breaker rises, enough thermal deformation can be generated, the free tripping mechanism is pushed to trip, at the moment, a moving contact and a static contact in a contact system are separated, the current loop is cut off, and the current overcurrent protection function is realized;
s2: the short-circuit protection system senses the change of loop current by the solenoid electromagnet, when the loop current is in a normal value or below a set short-circuit protection value, the electromagnetic attraction force generated by the solenoid electromagnet cannot overcome the acting force of a counter spring, and an iron core is kept at an initial position; when the current loop has short-circuit fault, the current is increased sharply, the electromagnetic force generated by the solenoid electromagnet overcomes the action of the counter-force spring and is opened quickly, the current loop is cut off, and the current short-circuit protection function is realized;
s3: the free tripping mechanism has the function that when the circuit has an overcurrent fault or other signals for forbidding closing commands, even if a handle of the miniature circuit breaker is operated to close the miniature circuit breaker, a moving contact of the miniature circuit breaker is still kept at a breaking position; when the circuit has over-current or short-circuit fault and sends out breaking instruction, the miniature circuit breaker is tripped to cut off the current circuit;
s4: the arc extinguishing system comprises an arc guide plate and an arc extinguishing chamber, and has the functions of realizing the trend of continuously increasing the limiting current, namely the current limiting function, through the action on electric arcs when the small-sized circuit breaker breaks off overlarge short-circuit current, and finally extinguishing the electric arcs.
Furthermore, the system host has an intelligent power consumption management function, the power consumption information of the user is monitored in real time, the management platform is provided with a data analysis function, a basis is provided for management departments, and scientific and intelligent power consumption management is achieved.
Furthermore, the management platform captures dynamic changes of the user electrical load sharply, extracts electrical variable quantities such as voltage, current, active power and power factor, identifies changes of the internal load of the user by comparing the electrical variable quantities with an electrical quantity characteristic identification feature library, and constructs a refined user portrait.
Further, the system host computer adopts the MCU treater of ultra-low power consumption, gathers real time monitoring and shows values such as residual current, temperature, voltage, electric current and sends, adopts multiple modes such as local audible and visual alarm, cell-phone APP remote monitoring, SMS warning, telephone notification, to alarm signal and control signal, instructs the warning position, records and preserves alarm information.
Furthermore, the intelligent operating system collects data through a miniature intelligent circuit breaker, uploads real-time running data of an electric line, utilizes sensors of temperature, humidity, gas and the like to acquire environmental data, and conveys the environmental data to a miniature edge computing terminal, analyzes and compares load data of temperature, voltage, current and the like of the electric equipment by means of basic principles of temperature and humidity effect change and electromagnetic induction, performs various data linear algorithm analysis on changed amplitude values by the control system, automatically powers off the equipment when processed values meet set electric fixed values and alarm preset values, and simultaneously gives out alarm sound or light signals, and the system is connected with a touch display screen for operation management.
The first embodiment is as follows:
as shown in fig. 3, 4 and 5, the miniature circuit breaker is used in cooperation with an intelligent electric meter, and can realize the functions of automatic brake opening and power interruption for arrears and automatic brake closing and power continuation for charge continuation, two lines are connected between the miniature circuit breaker and the electric meter and respectively comprise a control signal line and a feedback line, the control line adopts an AC220V level mode, the control unit supplies power and obtains power from the control signal line, the miniature circuit breaker can briefly consume power from a phase line during brake pulling action, the leakage current of the phase line needs to be less than 0.2mA after the action is finished, the feedback signal also adopts an AC220V level mode and is output after being internally connected with a 100k omega resistor in series, the control unit comprises a direct current motor for driving an actuating mechanism, the circuit breaker is driven to open and close by the action of the motor, and the actual position of the motor is detected by a position sensor.
According to the technical specification of external circuit breakers of electric energy meters, the miniature circuit breaker needs to meet the following technical requirements:
1) nominal control level voltage: AC 220V;
2) rated control level current: less than or equal to 1 mA;
3) phase line leakage current: after the control unit is switched on, the steady-state current consumed by each phase line is less than 0.2 mA;
4) rated frequency: 50Hz or 60 Hz;
5) automatic closing time: less than or equal to 3 s;
6) power-on time delay: the time is more than or equal to 4 s.
The miniature circuit breaker is a full-automatic circuit breaker and has the functions of arrearage brake opening, payment switch closing, charge control state indication, arrearage opening maintaining, state feedback and the like.
The technical parameters of the miniature circuit breaker require that phase line leakage current is less than 0.2mA after the control unit is switched on, so that an MCU with ultralow power consumption is adopted, and the specific technical requirements of the MCU are summarized according to the functions and the performances of the control unit of the miniature circuit breaker:
1) low power consumption: not more than 150 uA;
2) flash: about 4 KB;
3) RAM: about 1 KB;
4) the device is provided with an on-chip EEPROM;
5) packaging: 20 pins, TSSOP package;
6) ADC: 10 bit or 12 bit, 1 lane.
According to the specific technical requirements of the MCU, MSP430FR2111 of MSP430FR ferroelectric series is selected, which is an MCU with ultra-low power consumption tailored by TI company for the fields of miniature circuit breakers, charge pal, electronic cigarettes and the like.
The system adopts a DRV8848 scheme, one group of control outputs directly drive the direct current motor to execute the command, and the other group of outputs are used for controlling the power supply of the position Hall sensor DRV5023 to be switched on and off so as to reduce the power consumption of the system after switching on and further meet the requirement of 0.2mA input current.
The miniature circuit breaker needs to get electricity from an alternating current power supply line, and the scheme has high requirements on the volume, so that the scheme selects the UCC28910 source side control flyback scheme of the integrated MOSFET. The UCC28910 is specially used for isolating a flyback power supply, provides stable output voltage and current under the condition of not needing an optical coupler, and a built-in 700V starting and intelligent power management module can ensure that a device can close an internal high-voltage starting current source during normal work under the condition of ensuring that the device realizes high-voltage starting, so that the scheme can realize extremely low standby power to meet the requirement of 0.2mA input current. UCC28910 output voltage is 12V, supplies power for the direct current motor and the Hall sensor of miniature circuit breaker, converts 12V into 3.3V through TLV70433 and supplies power for MCU.
Example two:
as shown in fig. 3, 4 and 5, the system is based on a miniature circuit breaker, the device comprises a contact system, an arc extinguishing system, an operating mechanism, a free tripping mechanism, an overcurrent protection system and a short circuit protection system, the operating mechanism drives a moving contact in the contact system to move through an operating handle, so that the miniature circuit breaker is switched on and switched off, the control on an electric line is realized, and the protection is realized when the electric line has faults such as overload, short circuit and the like through the sensing of current thermal effect and magnetic effect.
(1) When the loop current is kept at the rated current value set by the miniature circuit breaker and below, the heat effect generated by the current causes the metal element to generate small deformation, and the automatic tripping mechanism cannot be tripped; when the loop current exceeds the set rated current, the temperature of the metal element of the miniature circuit breaker rises, enough thermal deformation can be generated, the free tripping mechanism is pushed to trip, at the moment, the moving contact and the static contact in the contact system are separated, the current loop is cut off, and the current overcurrent protection function is realized.
(2) The short-circuit protection system senses the change of loop current by the solenoid electromagnet, when the loop current is in a normal value or below a set short-circuit protection value, the electromagnetic attraction force generated by the solenoid electromagnet cannot overcome the acting force of a counter spring, and an iron core is kept at an initial position; when the current loop has short-circuit fault, the current is increased sharply, the electromagnetic force generated by the solenoid electromagnet overcomes the action of the counter-force spring and is opened quickly, the current loop is cut off, and the current short-circuit protection function is realized.
(3) The free tripping mechanism has the function that when the circuit has an overcurrent fault or other signals for forbidding closing commands, even if a handle of the miniature circuit breaker is operated to close the miniature circuit breaker, a moving contact of the miniature circuit breaker is still kept at a breaking position; when the circuit has over-current or short-circuit fault and sends out breaking instruction, the miniature circuit breaker is tripped to cut off the current circuit.
(4) The arc extinguishing system comprises an arc guide plate and an arc extinguishing chamber, and has the function of realizing the trend of continuously increasing the limiting current, namely the current limiting function, and finally extinguishing the arc through the function of the arc when the small circuit breaker breaks the overlarge short-circuit current. When the electric arc enters the arc extinguish chamber, the metal grid sheet in the arc extinguish chamber is divided into a plurality of sections, and each section of electric arc generates a near-pole voltage near the metal grid sheet, so that the voltage drop of the whole electric arc is rapidly improved, and the electric arc is rapidly extinguished.
In addition, the invention also provides an electric power fingerprint identification method, which is used for respectively identifying by establishing a model of single equipment, a transient event during switching and a steady-state operation condition within 5 minutes. The method mainly comprises the following steps: model-based identification, steady-state data-based identification, transient data-based identification.
(1) Model-based recognition
The modeling method is used for building models by utilizing simulink software for various types of household appliances (particularly illegal appliances).
② obtaining the voltage and current data actually measured by various electrical appliances (in the experiment, at present, trying the instantaneous value, effective value and harmonic wave data)
Thirdly, utilizing various electrical appliance models built in the first step, respectively inputting actual voltage data into each model (a controlled voltage source is used in the model), outputting current data, comparing the current data with the actual current data to obtain a difference value, and then continuously adjusting parameters such as resistance, inductance and the like in the model until the difference value reaches the minimum. Preliminary consideration is given to the use of optimization algorithms to adjust parameters, such as genetic algorithms, to enable multi-parameter optimization.
In the last step, optimal parameters are obtained for all measured electric appliance data in each model (if the parameter adjusting process cannot be converged, the electric appliance does not belong to the model), the electric appliance is classified according to the parameters by using a decision tree algorithm (considering that the corresponding minimum difference value under the optimal parameters is also used as a decision tree classification parameter), and whether the electric appliance belongs to the model is judged.
The working principle is as follows: the integrated system integrates the technologies of centralized load identification and management control, energy internet demand real-time response, power grid and user interconnection and the like, unifies hardware interfaces, and supports various wireless and power line carrier communication protocols; the leakage current constant value range setting (10mA-1000mA) can be customized, and the potential safety hazard that a human body cannot completely get rid of when the human body touches 30mA current is solved; the leakage self-checking work can be regularly executed every month, and the difficulty that 90% of users manually check the leakage button every month is overcome; the system can remotely inquire and set parameters such as three-phase current, three-phase voltage, leakage current, rated current value, over-voltage and under-voltage protection value, leakage action value, tripping times and the like in real time according to seasonal power load characteristics and line aging conditions, does not need to set equipment operation parameters on site, can monitor the circuit operation condition in real time, feeds back faults such as short circuit, over-current and over-voltage of the line in time, acquires early warning information of the line in advance, finds potential safety hazards of the line in time, and effectively reduces the occurrence of accidents such as fire, electric shock and the like; the intelligent electric energy meter with relatively large rated current (>100A) generally adopts a micro circuit breaker mode to realize various fee control functions and realize the intelligent control of various distributed electrical equipment, the micro circuit breaker is used together with the intelligent electric energy meter and can realize the functions of automatic brake opening and power failure due to arrearages and automatic switch closing and power continuation for fee charge, the micro circuit breaker and the electric energy meter are connected by two wires which are respectively a control signal wire and a feedback wire, the control wire adopts an AC220V level mode, a control unit supplies power to obtain power from the control signal wire, the power can be temporarily used from a phase wire during the brake pulling action, the leakage current of the phase wire after the action is finished is less than 0.2mA, a feedback signal also adopts an AC220V level mode, the feedback signal is output after being internally connected with a 100k omega resistor in series, and the control unit comprises a direct current motor for driving an actuating mechanism, the circuit breaker is driven to open and close through the action of the motor, and the actual position of the motor is detected by the position sensor.
It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (8)
1. The utility model provides a wisdom safety power consumption management and control system based on miniature management terminal, includes measurement collection system, data transmission system, management platform, exchanges residual current thing networking monitor terminal, system's host computer, sensing unit, intelligent operating system, opens into the unit, opens out unit, backend server, its characterized in that: the management platform is connected with a system host, the system host is connected with an alternating current residual current Internet of things monitoring terminal, a data transmission system and an intelligent operating system, the data transmission system is connected with a metering and collecting system, the metering and collecting system is connected with a sensing unit, the intelligent operating system is connected with an opening unit, the opening unit is connected with an opening unit, and the opening unit is connected with a background server.
2. The intelligent and safe electricity utilization management and control system based on the micro management terminal as claimed in claim 1, wherein: the management platform controls a system host, the system host controls the alternating residual current internet of things monitoring terminal and the intelligent operating system, and the system host receives data of the data transmission system, the metering acquisition system and the sensing unit.
3. The intelligent and safe electricity utilization management and control system based on the micro management terminal as claimed in claim 1, wherein: the intelligent electric meter comprises an opening unit, an isolating switch module, an intelligent electric meter module, a Bluetooth fee control module, a user side and a remote control module, wherein the opening unit is connected with the isolating switch module, the isolating switch module is connected with the intelligent electric meter module, the intelligent electric meter module is connected with the Bluetooth fee control module, the user side is connected with the remote control module, and the intelligent electric meter module, the Bluetooth fee control module and the user side are opening units.
4. The intelligent and safe electricity utilization management and control system based on the micro management terminal as claimed in claim 1, wherein: the method comprises the following steps:
s1: when the loop current is kept at the rated current value set by the miniature circuit breaker and below, the heat effect generated by the current causes the metal element to generate small deformation, and the automatic tripping mechanism cannot be tripped; when the loop current exceeds the set rated current, the temperature of a metal element of the miniature circuit breaker rises, enough thermal deformation can be generated, the free tripping mechanism is pushed to trip, at the moment, a moving contact and a static contact in a contact system are separated, the current loop is cut off, and the current overcurrent protection function is realized;
s2: the short-circuit protection system senses the change of loop current by the solenoid electromagnet, when the loop current is in a normal value or below a set short-circuit protection value, the electromagnetic attraction force generated by the solenoid electromagnet cannot overcome the acting force of a counter spring, and an iron core is kept at an initial position; when the current loop has short-circuit fault, the current is increased sharply, the electromagnetic force generated by the solenoid electromagnet overcomes the action of the counter-force spring and is opened quickly, the current loop is cut off, and the current short-circuit protection function is realized;
s3: the free tripping mechanism has the function that when the circuit has an overcurrent fault or other signals for forbidding closing commands, even if a handle of the miniature circuit breaker is operated to close the miniature circuit breaker, a moving contact of the miniature circuit breaker is still kept at a breaking position; when the circuit has over-current or short-circuit fault and sends out breaking instruction, the miniature circuit breaker is tripped to cut off the current circuit;
s4: the arc extinguishing system comprises an arc guide plate and an arc extinguishing chamber, and has the functions of realizing the trend of continuously increasing the limiting current, namely the current limiting function, through the action on electric arcs when the small-sized circuit breaker breaks off overlarge short-circuit current, and finally extinguishing the electric arcs.
5. The intelligent and safe electricity utilization management and control system based on the micro management terminal as claimed in claim 1, wherein: the system host has an intelligent power consumption management function, monitors the power consumption information of the user in real time, and the management platform has a data analysis function, so that a basis is provided for management departments, and scientific and intelligent power consumption management is realized.
6. The intelligent and safe electricity utilization management and control system based on the micro management terminal as claimed in claim 1, wherein: the management platform captures dynamic changes of the user power load sharply, extracts electrical variable quantities such as voltage, current, active power and power factor, identifies changes of the internal load of the user by comparing the electrical variable quantities with an electrical quantity characteristic identification feature library, and constructs a refined user portrait.
7. The intelligent and safe electricity utilization management and control system based on the micro management terminal as claimed in claim 1, wherein: the system host computer adopts the MCU treater of ultra-low power consumption, gathers real time monitoring and shows values such as residual current, temperature, voltage, electric current and sends, adopts multiple modes such as local audible and visual alarm, cell-phone APP remote monitoring, SMS warning, telephone notification, to alarm signal and control signal, instructs the warning position, records and preserves alarm information.
8. The intelligent and safe electricity utilization management and control system based on the micro management terminal as claimed in claim 1, wherein: the intelligent operating system acquires data through a miniature intelligent circuit breaker, uploads real-time operation data of an electric line, utilizes sensors of temperature, humidity, gas and the like to acquire environmental data, and conveys the environmental data to a miniature edge computing terminal, analyzes and compares load data of temperature, voltage, current and the like of electrical equipment by means of basic principles of temperature and humidity effect change and electromagnetic induction, performs various data linear algorithm analysis on changed amplitude values by a control system, sets an electrical fixed value and an alarm preset value when the processed values meet the requirements, automatically powers off the equipment, simultaneously sends alarm sound or light signals, and is connected with a touch display screen for operation management.
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