Intelligent miniature circuit breaker power-off information loss prevention system and methodTechnical Field
The invention relates to the technical field of digital information transmission, in particular to a system and a method for preventing loss of power-off information of an intelligent miniature circuit breaker.
Background
In the current production, the application scenes of the low-voltage equipment are more and more, the demand for automation and intellectualization is gradually increased, and the terminal of low-voltage power distribution is being changed from the traditional breaker to the application of the intelligent miniature breaker; the need for automatic and remote control is also raised.
The intelligent miniature circuit breaker is updated on the traditional circuit breaker distribution equipment, and the intelligent power consumption management such as the processing of the operation data of the distribution equipment, equipment state, early warning, alarm and the like is realized through the internet of things technology.
The intelligent miniature circuit breaker is generally composed of a miniature circuit breaker, a switching power supply and a communication gateway. The intelligent power utilization platform front end is connected with a power utilization device circuit through an intelligent miniature circuit breaker, and the intelligent miniature circuit breaker sends collected parameters such as power utilization loop voltage, current, electric leakage and temperature to a mobile phone APP and a computer WEB end of a manager in real time in a 4G/NB-IoT wireless mode; under the architecture, the power supply of the wireless gateway depends on the access of the commercial power to the miniature circuit breaker, and then the power supply is converted into direct current through the switching power supply to access the communication gateway, so that information is sent to the cloud platform. However, when the mains supply fails, the gateway also fails immediately, resulting in the device being in an off-line state, and for the platform side, no immediate data can be obtained to identify whether the power failure or the gateway itself fails to cause the off-line, and no relevant inference and improvement measures can be provided based on the operation monitoring data.
The current smart miniature circuit breaker has the following problems:
when the power supply is powered off, operation and maintenance personnel cannot identify whether the gateway equipment fails to cause offline or the power supply is powered off offline from the platform;
when the power supply is powered off, the intelligent miniature circuit breaker gateway is in a power-off state, and the data information acquired in real time cannot be reported;
the platform side is recorded without power failure, only the gateway is recorded offline, so that certain difficulty exists in operation and maintenance, and faults can be processed only through manual verification.
The platform side provides relevant alarms through data monitoring, but no specified treatment measures are given according to the alarms.
At present, the intelligent miniature circuit breaker and the cloud platform cannot solve the problems because monitoring information is not timely acquired when a fault occurs, and under the condition, the intelligent miniature circuit breaker is not so intelligent, and even people are required to find out the condition through other ways.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide the intelligent miniature circuit breaker outage prevention information loss system and method, by detecting power supply information and adopting a super capacitor to supply electric energy when power supply is abnormal, abnormal information is sent to a cloud platform, potential hazards and appointed treatment measures which possibly exist are presumed, and information management is facilitated.
In order to solve the technical problems, the invention adopts the following technical scheme: the invention provides an intelligent miniature circuit breaker power-off prevention information loss system, which comprises a circuit breaker, a cloud platform and a total station intelligent safety power utilization platform;
wherein:
the circuit breaker comprises a switching power supply and a communication gateway;
the switching power supply comprises a detection module, wherein the detection module is used for detecting power supply information and sending a detection result to the cloud platform through the communication gateway;
the communication gateway comprises a super capacitor and a communication module;
the super capacitor is used for providing power to the communication module when power supply is abnormal;
the communication module is used for sending power failure warning information to the cloud platform;
the cloud platform is used for carrying out alarm recognition and classification on abnormal information, screening fault reasons, feeding back the current state of electric equipment of the base station, recording remote personnel operation information, and transmitting data to the total station intelligent safe power utilization platform;
the total station intelligent safe power utilization platform is used for showing the online energy consumption condition of each electric equipment of the base station and monitoring the running condition of the circuit.
Preferably, the switching power supply further comprises an AC-DC module, a step-down module and a control module;
the AC-DC module is used for converting alternating current into direct current, the direct current is provided for the control module through the voltage reduction module, and meanwhile, the direct current charges the super capacitor;
the voltage reduction module is used for reducing and stabilizing voltage by changing the duty ratio;
the control module is used for stabilizing voltage and protecting a power supply.
Preferably, when the detection module detects power interruption, the super capacitor provides power for the communication module, and the communication gateway sends power failure warning information to the cloud platform.
The invention also provides a method for preventing the loss of the power-off information of the intelligent miniature circuit breaker, which comprises the following steps:
the detection module acquires power supply information, whether power supply abnormality occurs is presumed according to the detection result, when the power supply abnormality occurs, the super capacitor supplies electric energy to the communication module, the communication module sends the detection result to the cloud platform, and the cloud platform executes the following steps:
s1, recording using parameters of communication gateway equipment in real time, and predicting the current fault of the communication gateway and designating treatment measures: the use parameters comprise first networking time, latest offline time, offline duration, signal strength and version information;
s2, collecting various index data of the circuit breaker to form real-time data and historical data, and presuming potential hazards possibly existing in a circuit and appointed treatment measures through the index data;
s3, alarming, identifying and classifying the abnormal information, screening fault information, feeding back the current equipment state and recording remote personnel operation information.
Preferably, when it is estimated from the detection result whether or not the power supply abnormality occurs, it includes:
1) When the circuit breaker is connected to A, B, C three-phase power to work normally, the communication gateway works normally, and the online state of the communication gateway is TRUE;
2) And the detection module detects whether the phase A, the phase B and the phase C are defective: if one or two phases of power supply are abnormal, the phase is lost, and the communication gateway sends a phase-lost alarm to the cloud platform;
3) When the detection module detects that the phase A is normal, the communication gateway is in fault at the moment, the online state is FALSE, and the cloud platform judges that the communication gateway is in fault offline;
4) And if the detection module detects that the three phases are all powered off, judging that the power supply is interrupted, providing auxiliary power by the super capacitor, wherein the gateway is TRUE in an on-line state, and sending power supply and power failure warning information to the platform by the communication gateway.
Preferably, when performing the current fault prediction and the specified handling measures of the communication gateway, the method includes:
1) According to the power failure detection, the gateway equipment is presumed to be in a power failure state, and communication with a power supply department is carried out;
2) According to the online gateway, the miniature circuit breaker is offline, and the miniature circuit breaker equipment is presumed to have power failure or faults, so as to perform field inspection;
3) According to the offline frequency and offline time, predicting that the gateway has fault hidden danger, and performing on-site inspection on the gateway;
4) According to the off-line frequency and the signal intensity, the gateway network signal is presumed to be low, and an external antenna is added;
5) And identifying version information to realize remote firmware upgrading.
Preferably, the step of predicting potential hazards and specifying processing measures which may exist in the circuit by the index data includes:
1) Collecting current electric quantity data through a circuit breaker, identifying whether the input voltage has a phase failure, an over-high/low voltage and an over-temperature state, and performing on-site investigation or communication with a power supply department;
2) Checking electric quantity service conditions of different time periods through electric energy information counted by the cloud platform;
3) And checking electric energy information monitored by the circuit breakers in different time periods according to historical data counted by the cloud platform, predicting potential hazards possibly existing in the circuit, and sending a periodic check signal to operation and maintenance personnel.
Preferably, the detection module detects A, B, C three-phase power supply conditions every 10ms-30 ms.
Preferably, the electrical energy information includes voltage, current, quantity of electricity, temperature, power, and leakage information.
Preferably, the alarm identification categories comprise leakage tripping, surge early warning, motor locked-rotor, phase-defect alarm, over-temperature tripping, overload tripping, overvoltage tripping, under-voltage tripping, power overrun tripping, current overrun tripping, metering chip fault and switching position fault.
The invention also provides a method for preventing the loss of the power-off information of the intelligent miniature circuit breaker, which comprises the following steps:
the detection module acquires power supply information, whether power supply abnormality occurs is presumed according to the detection result, when the power supply abnormality occurs, the super capacitor supplies electric energy to the communication module, the communication module sends the detection result to the cloud platform, and the cloud platform executes the following steps:
s1, recording using parameters of communication gateway equipment in real time, and predicting the current fault of the communication gateway and designating treatment measures: the use parameters comprise first networking time, latest offline time, offline duration, signal strength and version information;
s2, collecting various index data of the circuit breaker to form real-time data and historical data, and presuming potential hazards possibly existing in a circuit and appointed treatment measures through the index data;
s3, alarming, identifying and classifying the abnormal information, screening fault information, feeding back the current equipment state and recording remote personnel operation information.
When the power supply abnormality is presumed to occur according to the detection result, the method comprises the following steps:
1) When the circuit breaker is connected to A, B, C three-phase power to work normally, the communication gateway works normally, and the online state of the communication gateway is TRUE;
2) And the detection module detects whether the phase A, the phase B and the phase C are defective: if one or two phases of power supply are abnormal, the phase is lost, and the communication gateway sends a phase-lost alarm to the cloud platform;
3) When the detection module detects that the phase A is normal, the communication gateway is in fault at the moment, the online state is FALSE, and the cloud platform judges that the communication gateway is in fault offline;
4) And if the detection module detects that the three phases are all powered off, judging that the power supply is interrupted, providing auxiliary power by the super capacitor, wherein the gateway is TRUE in an on-line state, and sending power supply and power failure warning information to the platform by the communication gateway.
Preferably, when performing the current fault prediction and the specified handling measures of the communication gateway, the method includes:
1) According to the power failure detection, the gateway equipment is presumed to be in a power failure state, and communication with a power supply department is carried out;
2) According to the online gateway, the miniature circuit breaker is offline, and the miniature circuit breaker equipment is presumed to have power failure or faults, so as to perform field inspection;
3) According to the offline frequency and offline time, predicting that the gateway has fault hidden danger, and performing on-site inspection on the gateway;
4) According to the off-line frequency and the signal intensity, the gateway network signal is presumed to be low, and an external antenna is added or communicated with an operator;
5) And identifying version information to realize remote firmware upgrading.
Preferably, the step of predicting potential hazards and specifying processing measures which may exist in the circuit by the index data includes:
1) Collecting current electric quantity data through a circuit breaker, identifying whether the input voltage has a phase failure, an over-high/low voltage and an over-temperature state, and performing on-site investigation or communication with a power supply department;
2) Checking electric quantity service conditions of different time periods through electric energy information counted by the cloud platform;
3) And checking electric energy information monitored by the circuit breakers in different time periods according to historical data counted by the cloud platform, predicting potential hazards possibly existing in the circuit, and sending a periodic check signal to operation and maintenance personnel.
Preferably, the detection module detects A, B, C three-phase power supply conditions every 10ms-30 ms.
Preferably, the electric energy information comprises voltage, current, electric quantity, temperature, power and electric leakage information.
Preferably, the alarm identification categories comprise leakage tripping, surge early warning, motor locked-rotor, phase-defect alarm, over-temperature tripping, overload tripping, overvoltage tripping, under-voltage tripping, power overrun tripping, current overrun tripping, metering chip fault and switching position fault.
The invention has the beneficial effects that:
1. when the power supply is powered off, the intelligent miniature circuit breaker capable of preventing the loss of power-off information can provide auxiliary power, can continuously supply power, maintains the metering chip and the communication gateway to continuously work for a certain time, provides a guarantee for the communication gateway to identify the power supply and power off state, and is convenient for subsequent management.
2. When the communication gateway fails and does not report the outage data, the gateway equipment is judged to be in outage due to the failure, the outage data can be clearly collected, hidden dangers are eliminated according to the outage data reasons, and the subsequent outage information loss condition is prevented.
3. The cloud platform can record the online time and offline reasons of the gateway equipment and the network information intensity in real time, deduce the possible problems and appointed treatment measures of the gateway at present, and is easy to manage.
4. The cloud platform collects various index data of micro-breaking during power-off and keep-alive to form historical data, a statistical report can be displayed or derived in a graphical mode, potential hazards possibly existing in a circuit are presumed through the index data, and specified treatment measures are easy to manage.
5. The cloud platform recognizes and classifies the alarm, feeds back the current state, records the information of remote personnel operation, and is easy to manage.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a miniature circuit breaker according to the present invention.
FIG. 2 is a schematic diagram of a system architecture according to the present invention.
FIG. 3 is a flow chart of the present invention for predicting whether a power failure occurs.
Fig. 4 is a schematic diagram of parameters used by a communication gateway device according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of electricity usage in different time periods according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of information of power monitored by a circuit breaker in different time periods according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of fault information according to an embodiment of the present invention.
Fig. 8 is a wiring diagram of a smart micro circuit breaker according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples: as shown in fig. 1 to 7, the invention provides an intelligent miniature circuit breaker power failure information loss prevention system, which comprises a circuit breaker, a cloud platform and a total station intelligent safety power utilization platform;
wherein:
as shown in fig. 1, the circuit breaker includes a switching power supply and a communication gateway;
the switching power supply comprises a detection module, wherein the detection module is used for detecting power supply information and sending a detection result to the cloud platform through the communication gateway;
the communication gateway comprises a super capacitor and a communication module;
the super capacitor is used for providing power to the communication module when the power supply is abnormal;
the communication module is used for sending power failure warning information to the cloud platform;
the cloud platform is used for carrying out alarm recognition and classification on abnormal information, screening fault reasons, feeding back the current state of electric equipment of the base station, recording remote personnel operation information, and transmitting data to the total station intelligent safe power utilization platform;
the total station intelligent safe power utilization platform is used for showing the online energy consumption condition of each electric equipment of the base station and monitoring the running condition of the circuit.
Specifically, the switching power supply further comprises an AC-DC module, a voltage reduction module and a control module;
the AC-DC module is used for converting alternating current into direct current, the direct current is provided for the control module through the voltage reduction module, and meanwhile, the direct current charges the super capacitor;
the voltage reduction module is used for reducing and stabilizing voltage by changing the duty ratio;
when the control module works, the detection module samples from the output end and compares the output end with a set value, and the result is sent to the control module to control the voltage reduction module, so that the pulse width or pulse frequency of the voltage reduction module is changed, and the output is stable;
according to the data provided by the detection module, the control module performs various protection measures on the power supply by using the control circuit;
more specifically, the invention also provides a standby power supply, and the standby power supply assists in supplying power when the electric quantity of the super capacitor is started.
The detection module recognizes that the circuit is broken, and the control module starts the auxiliary power supply to supply power.
Specifically, when the detection module detects power interruption, the super capacitor provides power for the communication module, and the communication gateway sends power failure warning information to the cloud platform.
As shown in fig. 2, the system of the present invention is divided into three layers, namely an infrastructure layer, a data communication layer and an application display layer.
The bottommost layer of the platform is a basic equipment layer and is connected with each electricity utilization unit in the communication base station, wherein the electricity utilization units comprise lighting equipment, an air conditioner, a water pump, a power socket and other electric equipment. Each equipment power is connected to intelligent miniature circuit breaker in the wisdom electronic box, and different circuit breakers control different consumer.
The intelligent miniature circuit breaker, the communication gateway and the cloud platform are data communication layers and are responsible for collecting electricity data, monitoring electricity safety, controlling a circuit switch and communicating with an upper platform. The circuit breaker is provided with a collection module which can collect and monitor the power utilization state of the load equipment, including voltage, current, power factor, electric energy, temperature, leakage detection and electric leakage. The intelligent circuit breaker is connected with the communication gateway, the gateway is connected with the network in a WIFi/4G/NB-IoT mode and the like, the power utilization state information of the load equipment is uploaded to the cloud platform, the data are processed through the data center desk of the cloud platform, and finally the online energy consumption condition of each electric equipment of the base station is displayed on the intelligent safety power utilization platform of the whole station, and the running condition of the circuit is monitored.
The total station intelligent safe electricity utilization platform and the third party application are application display layers, and electricity utilization conditions, data and alarms of electric equipment in the total base station are comprehensively displayed in various modes.
The invention also provides a method for preventing the loss of the power-off information of the intelligent miniature circuit breaker, which comprises the following steps:
the detection module acquires power supply information and presumes whether power supply abnormality occurs according to a detection result;
as shown in fig. 3, when it is presumed from the detection result that the power supply abnormality has occurred, it includes:
when the circuit breaker is connected to A, B, C three-phase power to work normally, the communication gateway works normally, and the online state of the communication gateway is TRUE;
the detection module detects A, B, C three-phase power supply conditions once every 10ms-30 ms;
the detection module detects phase A, phase B and phase C, and if the phase A, the phase B and the phase C have defects: if one or two phases of power supply are abnormal, the phase is lost, and the communication gateway sends a phase-lost alarm to the cloud platform;
when the detection module detects that the A phase is normal, the communication gateway is in fault at the moment, the online state is FALSE, and the cloud platform judges that the communication gateway is in fault offline;
the detection module detects that all three phases are powered off, and judges that power supply is interrupted, the super capacitor provides auxiliary power, the gateway on-line state is TRUE, and the communication gateway sends power supply and power failure alarm information to the platform;
when power supply abnormality occurs, the super capacitor supplies electric energy to the communication module, the communication module sends a detection result to the cloud platform, and the cloud platform executes the following steps:
s1, as shown in FIG. 4, recording the using parameters of the communication gateway equipment in real time, and carrying out current fault prediction and designated treatment measures of the communication gateway:
more specifically, the usage parameters include a first networking time, a last offline time, an offline duration, a signal strength, and version information;
more specifically, when the current fault prediction and the specified treatment measures of the communication gateway are performed, the method includes:
s11, according to the power failure detection, presuming that the gateway equipment is in a power failure state, and communicating with a power supply department;
s12, according to the online gateway, the miniature circuit breaker is offline, and the existence of power failure or faults of the miniature circuit breaker equipment is presumed, and field inspection is carried out;
s13, predicting that the gateway has fault hidden danger according to the offline frequency and the offline time, and checking the gateway on site;
s14, according to the off-line frequency and the signal intensity, presuming that the gateway network signal is low, adding an external antenna or communicating with an operator;
s15, identifying version information to realize remote firmware upgrading;
s2, collecting various index data of the circuit breaker to form real-time data and historical data, and presuming potential hazards possibly existing in a circuit and appointed treatment measures through the index data;
more specifically: when potential hazards and specified processing measures possibly exist in the index data speculation circuit, the method comprises the following steps:
s21, collecting current electric quantity data through a circuit breaker, identifying whether an input voltage has a phase failure, an over-high/under-low voltage and an over-temperature state, and performing on-site investigation or communication with a power supply department;
s22, as shown in FIG. 5, checking the electricity consumption conditions of different time periods through the electric energy information counted by the cloud platform;
s23, as shown in FIG. 6, checking electric energy information monitored by the circuit breakers in different time periods according to historical data counted by the cloud platform, predicting potential hazards possibly existing in the circuit, and sending a periodic check signal to operation and maintenance personnel;
s3, as shown in FIG. 7, carrying out alarm recognition and classification on abnormal information, screening fault information, feeding back the current equipment state and recording remote personnel operation information, wherein the alarm recognition types comprise electric leakage tripping, surge early warning, motor stalling, open-phase alarming, over-temperature tripping, overload tripping, overvoltage tripping, under-voltage tripping, power overrun tripping, current overrun tripping, metering chip fault and switching-on and switching-off position fault;
more specifically, the electrical energy information includes voltage, current, electrical quantity, temperature, power, and leakage information.
Example two
As shown in fig. 8, the present invention further provides a wiring diagram of the smart miniature circuit breaker according to the present invention:
and a super capacitor (> 1200 mu F) is connected into the communication gateway, and the super capacitor is used for auxiliary power supply. Because the super capacitor stores charges, the charges can be rapidly replenished and released, and the battery needs to be charged and discharged in a chemical reaction mode. When the power supply is stopped, the super capacitor can provide short-time power in a certain time, and the stability of the power supply is ensured. In this case, the detection module may detect a power outage state, and the communication gateway is responsible for uploading the power outage information and records to the platform side.
And by adding the super capacitor, the normal working voltage of the communication gateway is provided.
The super capacitor has the characteristics of high reliability, maintenance-free, long service life and wide working temperature range, so that the super capacitor can be used as a standby power supply and can provide stable power.
According to the intelligent miniature circuit breaker, the intelligent miniature circuit breaker with the function of preventing losing of power-off information is adopted, under the condition that the basic function of the original intelligent miniature circuit breaker is unchanged, the auxiliary power is added to supply power in a short time when the power is off, so that the fault cause can be rapidly screened, and data and equipment state information can be uploaded to the cloud platform.
The device of the invention has the following functional characteristics:
when the power supply is powered off, the intelligent miniature circuit breaker capable of preventing the loss of power-off information can provide auxiliary power, can continuously supply power for about 1-15s, and maintains the metering chip and the communication gateway to continuously work for a certain time. The communication gateway recognizes that the power is powered down.
When the communication gateway itself fails and the outage data is not reported, the outage is caused for the failure of the gateway equipment.
The cloud platform records the online time length and offline reason of the gateway equipment, the network information intensity, deduces the possible problems of the gateway and appoints the treatment measures.
The cloud platform collects various index data of the micro-outage during the outage and the activation period to form historical data, and a statistical report can be displayed or exported in a graphical mode. By the index data, potential hazards which may exist in the circuit are presumed, and processing measures are specified.
The cloud platform identifies and classifies the alarm, feeds back the current state and records information of remote personnel operation.
Performance characteristics of auxiliary power supply equipment
The technology for preventing the loss of power-off information of the intelligent miniature circuit breaker adopts auxiliary power supply equipment capable of storing energy in a short time. According to various auxiliary power supply equipment on the market, including super capacitors, lithium ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries and the like, the comparison analysis is carried out. The dimensions of performance, price, service life and the like are compared, and a super capacitor is used as auxiliary power supply equipment.
The super capacitor and the battery are the biggest difference in energy storage principle that the super capacitor utilizes a physical energy storage mode and the battery utilizes a chemical energy storage mode. Meanwhile, the decision factors of the energy storage of the super capacitor and the battery are different.
Therefore, the super capacitor is selected as auxiliary power supply equipment, and has the following advantages:
the super capacitor has ultra-low series equivalent resistance, the power density is more than tens times of that of the energy storage device adopting the lithium ion battery, and the super capacitor is suitable for large-current discharge.
Super capacitor has super long service life, and charge and discharge times of more than 50 ten thousand times, 500 times of that of lithium ion battery, 1000 times of that of nickel-hydrogen and nickel-cadmium battery.
The super capacitor can be charged with large current, has short charging and discharging time, has simple requirement on a charging circuit and has no memory effect.
The super capacitor is maintenance-free and can be sealed.
The super capacitor has wide temperature range, wide applicability and temperature range of-40 ℃ to +70 ℃, and the common battery is-20 ℃ to 60 ℃.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.