CN115149653A - Safety management system for rail transit power supply equipment - Google Patents
Safety management system for rail transit power supply equipment Download PDFInfo
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- CN115149653A CN115149653A CN202211075607.7A CN202211075607A CN115149653A CN 115149653 A CN115149653 A CN 115149653A CN 202211075607 A CN202211075607 A CN 202211075607A CN 115149653 A CN115149653 A CN 115149653A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M5/00—Arrangements along running rails or at joints thereof for current conduction or insulation, e.g. safety devices for reducing earth currents
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00028—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
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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
Abstract
The invention discloses a safety management system for rail transit power supply equipment, which comprises a judgment module: and judging whether the fault is real according to the double monitoring data of the monitoring module/the shooting module, sending the data to the processing module for processing after the fault is determined, controlling the alarm module to send out an alarm prompt by the processing module, and controlling the management module to send out an operation instruction. According to the invention, the data information is comprehensively judged by the judgment module according to the matched monitoring of the monitoring module and the shooting module, the fault area and the fault level are judged after the fault is confirmed to be correct, and the information is sent to the processing module for integration, and then the management module sends out a corresponding operation instruction.
Description
Technical Field
The invention relates to the technical field of power supply management systems, in particular to a safety management system for rail transit power supply equipment.
Background
The rail transit is one of the important infrastructures for the current urban economic development, and has great development in a new period due to the prominent effects of solving the problem of urban traffic jam, improving the environmental quality, adjusting the urban regional structure and industrial layout and pulling the continuous development and reasonable layout of the urban social economy, and the rail transit is used as an equipment asset intensive industry, and the huge scale of the rail transit corresponds to massive equipment, so that how to more scientifically and efficiently ensure the normal and reliable operation of the equipment is realized, and the rail transit has great significance for the safe and efficient operation of the rail transit.
The safe operation of the rail transit is not separated from a safe, standard and reliable power supply system, the power supply system is blood of rail transit transportation and is a core system, once the power supply system breaks down or is interrupted, the power supply system not only can cause paralysis of urban rail transit transportation, but also can endanger life safety of passengers, and brings huge pressure to ground wire public transport, thereby causing adverse effects on social stability and urban image.
The prior art has the following defects: when current management system monitoring track traffic power supply unit, generally for monitoring power supply unit's interior operating condition, confirm the trouble back, need patrol and examine personnel and look for the trouble region to judge the fault level by patrolling and examining personnel in the testing process, not only increase artifical burden, artifical the patrolling and examining needs the certain time moreover, thereby increase the risk that power supply unit used.
Disclosure of Invention
The invention aims to provide a safety management system for rail transit power supply equipment, which aims to solve the defects in the background technology.
In order to achieve the above purpose, the invention provides the following technical scheme: a safety management system for rail transit power supply equipment comprises a processing module, an alarm module, a management module and a safety management module
A shooting module: for monitoring peripheral conditions of the power supply device;
a monitoring module: the power supply equipment monitoring system is used for monitoring the inner circumference condition of the power supply equipment;
a judging module: and judging whether the fault is a false alarm according to the dual monitoring data of the monitoring module/the shooting module, sending the data to the processing module for processing after determining the fault, controlling the alarm module to send out an alarm prompt by the processing module, and controlling the management module to send out an operation instruction.
Preferably, the monitoring module includes a data acquisition unit, an equipment monitoring unit and a cloud computing platform:
the data acquisition unit acquires data or starts data actively uploaded by the monitoring mode collection equipment;
the device monitoring unit acquires protocol data and transmits the protocol data and cloud data through an HTTPS protocol;
a cloud computing platform: the dataset and the update data are transmitted over HTTPS protocol.
Preferably, the data acquisition unit adopts an edgexfluor frame for data acquisition and forwarding; the device monitoring unit acquires data from the ActiveMQ through an MQTT protocol by adopting a SpringBoot and Layui development framework; the cloud computing platform adopts a private cloud framework to build an LSTM fault prediction model.
Preferably, the data acquisition unit sends a request instruction to the device terminal to realize data acquisition, analyzes the acquired data, and finally exports the data to the ActiveMQ for the device monitoring unit to call the data.
Preferably, the judging module receives data of the monitoring module and the shooting module, deletes or interpolates abnormal data, normalizes the data, and finally divides the data set into a training set and a test set.
Preferably, the LSTM fault prediction model maps sample data of the characteristic parameters to a range between [0,1] by using normalization processing, and the conversion formula is:
wherein:
is the minimum value of the sample data,
is the maximum value of the sample data,
in order to obtain the sample data before conversion,
the sample data generated after conversion.
Preferably, the model prediction deviation formula of the LSTM fault prediction model is as follows:
wherein the content of the first and second substances,
for the number of test sets to be tested,
in order to be a true value of the gas concentration,
for the gas concentration values predicted by the model,
to test the number of concentration values,
the resulting root mean square error was calculated for the n test set data.
Preferably, the management system further comprises a positioning module, the monitoring module or the recording module monitors the fault of the power supply equipment, and the positioning module is positioned to the corresponding recording module or the monitoring module for secondary monitoring.
Preferably, the management module includes device management, integrated management, and two-ticket management, wherein,
the equipment management comprises equipment addition, equipment deletion, equipment inquiry and equipment operation data check;
the comprehensive management comprises the steps of sending an instruction according to the monitoring information, and enabling corresponding inspection equipment and inspection personnel to correspondingly manage the equipment according to the instruction;
the two-ticket management comprises a work ticket and an operation ticket.
Preferably, the equipment addition comprises electrical equipment addition and sensing equipment addition; the equipment operation data viewing comprises viewing data of the on-line electrical equipment and the off-line electrical equipment.
Preferably, the monitoring module further comprises an intelligent sensing unit, after the polarization potential of the underground metal structure, the voltage between the steel rail and the track bed main body structure and the voltage drop of the steel rail with a specific length are subjected to signal processing through a signal conditioning circuit, the signal range is kept within an input allowable value of an A/D converter, the A/D converter converts an analog signal into a digital signal and transmits the digital signal to a single chip microcomputer system for further processing, when the intelligent sensing unit sends a communication request to the sensor, the sensor sends measured data to the intelligent sensing unit, and a clock is set to keep the synchronism of monitoring parameters and realize automatic detection of natural body potential when the urban rail transit train stops running;
preferably, the intelligent sensing unit comprises a signal conditioning circuit and an a/D conversion circuit, wherein,
preferably, the signal conditioning circuit conditions and converts an input analog signal to a range matched with the input of the A/D converter, a CLC1200 precision amplifier chip is adopted, the gain is high, the power consumption, offset voltage, drift, noise and the like of the signal conditioning circuit can be kept at a low level, the system requirements can be met, the input signal range of the steel rail potential is large, and the signal conditioning circuit is conditioned after voltage division is needed;
preferably, the chip adopted by the A/D conversion circuit of the intelligent sensor is a 16-bit A/D chip AD7705 which is provided with a gain programmable amplifier, has higher resolution, can self-calibrate and wide dynamic range and is very suitable for the application requirement of the sensor, the A/D conversion chip can be directly connected with an STC89S52 type single chip microcomputer chip, the single chip microcomputer controls data or instructions to be input into a DIN pin, a data output DOUT pin and a serial clock input SCLK pin through a data line, a data output register is ready after data conversion is finished, and a DRDY state signal indicates the single chip microcomputer to read digital quantity.
Preferably, the intelligent sensing unit monitors various power supply devices by being connected with various monitoring sensors, monitors stray current by being connected with a steel rail and a reference electrode and measuring and preventing a terminal, when the stray current is monitored, the current is drained through the current drainage cabinet, the two ends of the current drainage cabinet are respectively connected with the current drainage network and a power substation negative busbar through wiring terminals to realize electrical connection, and the current drainage cabinet adopts a polarity drifting mode to lead the stray current collected by the current drainage network underground to the negative electrode of a power substation rectifier.
In the technical scheme, the invention provides the following technical effects and advantages:
1. the management system has double internal and external detection processing on the power supply equipment, so that false alarm is effectively avoided, the fault area and the fault level can be timely judged according to the monitoring information, the management efficiency of the power supply equipment is effectively improved, and the running risk of the power supply equipment is reduced;
2. according to the invention, the stray currents generated in the power supply equipment and the power supply system are monitored by the intelligent sensing unit, and after the stray currents are found, the drainage cabinet is controlled in time to discharge the stray currents on the steel rail, the reference electrode and the measurement and prevention terminal, so that the stray currents are prevented from causing large-scale electrochemical corrosion damage to reinforced concrete of the urban rail transit main body structure, and the protection of the underground metal structure along the urban rail transit is realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a circuit block diagram of a management system according to the present invention.
Fig. 2 is a flow chart of the operation of the present invention.
Fig. 3 is a schematic diagram of the operation of the recording module and the monitoring module according to the present invention.
FIG. 4 illustrates monitoring according to the present invention the physical architecture diagram of the module.
FIG. 5 is a timing diagram of the monitoring and warning unit according to the present invention.
FIG. 6 is a schematic diagram of an A/D conversion circuit according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments 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.
Example 1
Referring to fig. 1, the safety management system for a rail transit power supply device in the embodiment includes a processing module, a recording module, a monitoring module, a determining module, an alarm module, and a management module;
wherein, the first and the second end of the pipe are connected with each other,
a monitoring module: the monitoring device is used for monitoring the internal operation condition of the power supply equipment.
A shooting module: for monitoring peripheral operating conditions of the power supply unit.
A judging module: judging a fault area, whether false alarm exists and the like according to data information monitored by a monitoring module/a shooting module;
the processing logic of the judging module is as follows: when a certain monitoring module monitors that an electrical device inside the power supply equipment has a fault, a judging module compares an internal set threshold (initial voltage, current) with a current fault threshold (fault voltage, current), if the fault threshold is not equal to the set threshold, the judging module judges the fault of the power supply equipment and controls a shooting module corresponding to the monitoring module to operate, the shooting module monitors the peripheral condition of the power supply equipment, the monitoring module positions the equipment, and the judging module judges the fault grade by combining the equipment internal data monitored by the monitoring module and the equipment external data collected by the shooting module (for example, the voltage of the power supply equipment is increased, the external fire phenomenon does not occur, the fault grade is judged to be small, and if the voltage of the power supply equipment is increased, the external fire phenomenon occurs, and the fault grade is judged to be large).
The specific steps of the judging module for positioning the equipment through the monitoring module are as follows:
(1) Numbering X1, X2 and X3 to all power supply equipment,. Xi, and numbering Y1, Y2 and Y3 to monitoring modules arranged in the corresponding power supply equipment,. Yi;
(2) The monitoring module numbers correspond to the power supply equipment numbers one by one, Y1 corresponds to X1, Y2 corresponds to X2, and Yi corresponds to Xi;
(3) When a monitoring module monitors that the equipment fails, the equipment is positioned through the serial number of the monitoring module (for example, the X3 monitoring module feeds back a signal, and the judgment module can timely position the equipment to the Y3 equipment according to the X3 monitoring module).
According to the above, the recording modules can be numbered as Z1, Z2, and Z3.. Zi, where Z1 corresponds to X1, Z2 corresponds to X2, and Zi corresponds to Xi, so that the apparatus can be positioned by the monitoring module, the recording module can be positioned by the monitoring module, or the monitoring module can be positioned by the recording module.
A processing module: the receiving and judging module confirms the data information of the fault area and the fault grade, processes and integrates the data information and feeds the data information back to the management module;
an alarm module: sending out an alarm prompt according to the processing information of the processing module;
the management module is used for: and sending out a corresponding operation instruction according to the data information to timely manage the power supply equipment.
Referring to fig. 2 and 3, according to the present invention, the monitoring module monitors the inner periphery operation status of the power supply device, the camera module monitors the outer periphery operation status of the power supply device, the monitoring module and the camera module are used for monitoring, the judging module performs comprehensive judgment on data information, after the fault is confirmed to be correct, the fault area and the fault level are judged, and after the information is sent to the processing module for integration, the management module sends out a corresponding operation instruction.
The management system further comprises a positioning module, when the monitoring module monitors that the internal periphery of the power supply equipment has a fault, the positioning module is timely positioned to the corresponding shooting and recording module, the area shooting and recording module sends the peripheral condition of the power supply equipment to the judging module together, and similarly, if the shooting and recording module monitors that the peripheral running of the power supply equipment has a fault, the positioning module positions the corresponding monitoring module, the monitoring module sends the internal periphery condition of the power supply equipment to the judging module together, and by arranging the positioning module, when the monitoring module or the shooting and recording module monitors that the power supply equipment has a fault, the monitoring module can be timely positioned to the shooting and recording module or the monitoring module corresponding to the monitoring module or the shooting and recording module, so that the fault area can be quickly positioned, and the fault level can be conveniently confirmed.
In this embodiment, the power supply device monitored by the management system includes a transformer, a gas insulated fully-enclosed combined electrical appliance, a high-voltage circuit breaker and a lightning arrester;
wherein the content of the first and second substances,
the inner periphery monitoring of the transformer comprises oil chromatography on-line monitoring, partial discharge on-line monitoring, temperature on-line monitoring, iron core grounding on-line monitoring and sleeve dielectric loss on-line monitoring;
peripheral monitoring of the transformer includes appearance and ambient environment.
The inner periphery monitoring of the gas insulated totally-enclosed combined electrical apparatus comprises poor contact of a contact and partial discharge;
the gas insulated totally-enclosed combined electrical apparatus peripheral monitoring comprises appearance and surrounding environment.
The monitoring of the inner periphery of the high-voltage circuit breaker comprises switching times and current waveforms;
high voltage circuit breaker peripheral monitoring includes mechanical properties, appearance, and ambient environment.
Monitoring the inner periphery of the lightning arrester comprises internal resistive current;
the lightning arrester peripheral monitoring includes appearance and surrounding environment.
The management module comprises equipment management, integrated management and two-ticket management, wherein,
the equipment management comprises equipment addition, equipment deletion, equipment inquiry and equipment operation data check;
newly adding equipment: the equipment adding comprises electrical equipment adding and sensing equipment adding, monitoring staff enter an electrical equipment list page or a sensing equipment list page, clicking an equipment adding button, completely filling a pop-up form, and returning an information popup box of equipment adding success to indicate that the equipment adding is successful;
equipment deletion: selecting corresponding equipment in an operation column of the equipment list, clicking a delete button, and completely deleting the equipment;
equipment query: selecting equipment id, equipment name or equipment model, searching corresponding one or more equipment, inputting electrical equipment id in a sensing equipment list, and returning a sensor belonging to the electrical equipment in the list;
and viewing equipment operation data: on the data statistical analysis page of the equipment management, the data of the current on-line electrical equipment and off-line electrical equipment can be checked, the line graphs of newly added electrical equipment and sensing equipment can be checked every month, the number of spare parts can be checked, and the like.
In order to facilitate information query of the power supply equipment, a power supply equipment information data table is manufactured, and the following table specifically shows:
| name of field | Type (B) | Main key | Description of the preferred embodiment |
| Id | ObjectId | Is that | Electrical equipment numbering |
| Name | String | Whether or not | Electric equipment name |
| Model | String | Whether or not | Model of electrical equipment |
| Company | String | Whether or not | Electrical equipment factory |
| Suppler | String | Whether or not | Supplier of electrical equipment |
| Data__of_production | Date | Whether or not | Date of delivery |
| First_use_data | Date | Whether or not | Date of first use |
| Life_span | String | Whether or not | Theoretical life |
| Describe | String | Whether or not | Description of the invention |
| State | String | Whether or not | State of electrical equipment |
The power supply apparatus information data table is used to store data information related to the electrical apparatus, and the Id field is a primary key of the table.
And the comprehensive management comprises the step of sending an instruction according to the monitoring information so that the corresponding inspection equipment and the inspection personnel perform corresponding management on the equipment according to the instruction.
The two-ticket management comprises a work ticket and an operation ticket, the work ticket strictly unifies the work mode, and the operation ticket conforms to the national security standard.
Example 2
In this embodiment, the monitoring module includes a monitoring and early warning unit, a failure prediction unit, and a maintenance support unit, where the monitoring and early warning unit includes device online monitoring, early warning record management, failure diagnosis, message routing management, rule engine management, and scene service management.
Referring to fig. 5, the monitoring and warning unit: when a detector enters a rule engine subunit, firstly, a getresults List () method is called to send a request for obtaining list information to a ruleController, the ruleController continuously sends a request to a ruleServiceImpl implementation class, in the implementation class, a getresults List () method is called to send a request to a database, the rule engine list information is obtained and returned to a user, when the user performs equipment addition operation, equipment is clicked to newly add, an addRule () method is called to send a newly added request, after the request reaches the ruleServiceImpl class, the ruleServiceImpl class calls ruleDao verification form information, and after the verification is passed, rule engine information is added to the database, and the rule engine addition is completed.
A failure prediction unit: when a detection person enters a fault prediction unit, a getPrectionList () method is called to send a list information acquisition request to a FailurePrectionController, the FailurePrectionController continuously sends a request to a FailurePrectionServiceImpl implementation class, the getPrectionList is called in the implementation class (the method sends the request to a database to acquire the predicted fault record list information and returns the predicted fault record list information to a user, when the user performs a state change operation, the recording state is clicked to modify, the updatatestatus () method is called to send an update request, and after the request reaches the FailurePrectionServiceImpl class, the FailurePrectionDao class calls FailureDepdao to complete data update.
Maintenance support unit: when a user carries out maintenance task adding operation, clicking the new maintenance task and calling addTask (sending a new adding request by the method, and after the request reaches the MaintranceServicelmpl class, calling the MaintranceServiceDao verification form information by the MaintranceServicesDao verification form information, and adding the maintenance task information to the database after verification, thereby completing the new maintenance task.
Referring to fig. 4, a technical architecture of the monitoring module includes a data acquisition unit, an equipment monitoring unit, and a cloud computing platform, wherein,
(1) A data acquisition unit: an EdgexFoundation framework is adopted for data acquisition and forwarding, data is acquired or data actively uploaded by a monitoring mode collection device is started, the received data is analyzed to generate data in a specified format, namely, a go language is used for developing device services of corresponding devices, then an export module is arranged, the data is uploaded to an ActiveMQ, and the data is waited for being consumed by a device monitoring unit;
the data acquisition unit firstly sends a request instruction to the equipment terminal to realize data acquisition, analyzes the acquired data, and finally exports the data to an ActiveMQ for the equipment monitoring unit to call the data;
the data acquisition unit finishes sending the instruction, 1448 bytes are read each time, the first 8 bytes are deleted, the remaining 1440 bytes are sensing data, the high and low bits of two bytes are taken each time for interchange and converted into double-byte integer data, and then the double-byte integer data is converted into single-precision floating point data.
The data analysis logic of the data acquisition unit is as follows:
let the received byte array be data,
data No. 1, data [8], [ data 9];
data No. 2, data [10] data [11];
data No. 3, data [12], [ data 13];
data No. 4, data [14], [ data 15];
data of item 5, data [16], [ data 17];
data No. 6, data [18] data [19];
data of item 7, data [20], [ data 21];
the 8 th data, data [22] data [23], is another group of 8 data, 1440 bytes of which are 90 groups of data in total, and the first group of data is taken for analysis;
the data [ ] is firstly converted into a string type with 16 systems and then converted into a numerical type with 16 systems, the high and low bits of the data are exchanged by the first data, the data [9] is converted into the high bit, the data [8] is converted into the low bit, and according to the formula:
temp=int32(data[9]*256)+int32(data[9])
then, the temp in 16 system is converted into integer or floating point number in 10 system according to the requirement, and the same method is used for other 7 data, so that the data analysis is completed.
(2) A device monitoring unit: acquiring data from the ActiveMQ through an MQTT protocol by adopting a Springboot and Layui development framework, requesting and responding a sent control instruction through an HTTPS, and transmitting the data with the cloud end by using the HTTPS protocol;
(3) The cloud computing platform: and (3) establishing an LSTM fault prediction model by adopting a private cloud framework, transmitting a data set and daily updating data from the equipment monitoring unit through an HTTPS protocol, and sending the predicted content to a monitoring platform through the HTTPS protocol.
Example 3
The LSTM fault prediction model normalizes the data so as to find out the relation between the data, and finally divides the data set into a training set and a test set;
(1) Exception data handling
Due to the difference of detection environments or data loss of historical transformer oil chromatogram online data, abnormal data exist, the prediction accuracy of the model is influenced, and the abnormal data in sample data are processed by using an interpolation method, so that the accuracy of the prediction model is ensured;
(2) Data normalization processing
And mapping the sample data of the characteristic parameters between [0,1] by adopting normalization processing, wherein the conversion formula is as follows:
wherein:
is the minimum value of the sample data,
is the maximum value of the sample data,
in order to obtain the sample data before conversion,
the sample data generated after conversion.
(3) Data set partitioning
Setting a data set as a data set of the concentration of dissolved gas in certain power supply equipment, wherein the data set comprises 8 columns, the first column is time, and the second column to the eighth column are respectively H 2 、CH 4 、C 2 H 6 、C 2 H 4 、C 2 H 2 、CO、CO 2 The data set has 900 rows of data, the first 80% of the data set is used as a training set, and the last 20% of the data set is used as a test set;
the method comprises the following steps of collecting seven gases in a data set to predict the concentration, training the seven gases as input characteristic parameters to build a prediction model, and evaluating the prediction deviation of the model by the following formula:
wherein the content of the first and second substances,
in order to test the number of sets,
in order to be a true value of the gas concentration,
for the gas concentration values predicted by the model,
in order to test the number of concentration values,
and (3) calculating the root mean square error obtained by the n test set data, before calculating the prediction error of the model, firstly carrying out reverse normalization processing on the obtained prediction result data and the test data subjected to scaling processing, and calculating the root mean square error by adopting a predicted value and a real value of an actual proportion so as to evaluate the prediction error of the model.
Example 4
Because stray current exists in a power supply system of the rail transit, in the implementation, the monitoring module further comprises an intelligent sensing unit, after the polarization potential of an underground metal structure, the voltage between a steel rail and a track bed main body structure and the voltage drop of the steel rail with a specific length are subjected to signal processing through a signal conditioning circuit, the signal range is kept within an input allowable value of an A/D converter, the A/D converter converts an analog signal into a digital signal and transmits the digital signal to a single chip microcomputer system for further processing, when the intelligent sensing unit sends a communication request to a sensor, the sensor sends measured data to the intelligent sensing unit, and a clock is set to keep the synchronism of monitoring parameters and realize automatic detection of natural body potential when the urban rail transit train stops;
the intelligent sensing unit comprises a signal conditioning circuit and an A/D conversion circuit, wherein,
the signal conditioning circuit conditions and transforms an input analog signal to a range matched with the input of the A/D converter, a CLC1200 precision amplifier chip is adopted, the gain is high, meanwhile, the power consumption, offset voltage, drift, noise and the like of the signal conditioning circuit can be kept at a low level, the system requirements can be met, the input signal range of the steel rail potential is large, and the signal conditioning circuit is required to condition the signal after voltage division;
referring to fig. 6, the chip adopted by the a/D conversion circuit of the intelligent sensor is a 16-bit a/D chip AD7705, which has a gain programmable amplifier, a high resolution, a self-calibration capability, a wide dynamic range, and is very suitable for the application requirements of the sensor, the a/D conversion chip can be directly connected to an STC89S52 type single chip microcomputer chip, the single chip microcomputer controls data or instructions to be input to a DIN pin, a data output DOUT pin, and a serial clock input SCLK pin through a data line, after the data conversion is completed, a data output register is ready, and a DRDY state signal indicates the single chip microcomputer to read digital quantity.
The intelligent sensing unit monitors various power supply devices by being connected with various monitoring sensors, stray current is monitored by connecting a steel rail, a reference electrode and a monitoring and preventing terminal, when the stray current is monitored, current drainage is performed through a current drainage cabinet, the two ends of the current drainage cabinet are respectively connected with a current drainage network and a substation negative busbar through wiring terminals, the current drainage cabinet adopts a polarity drifting mode to lead the stray current collected by the current drainage network underground to the negative electrode of a substation rectifier, electrochemical corrosion harm on a large scale to reinforced concrete of an urban rail transit main body structure is prevented by the stray current, and protection of the urban rail transit underground metal structure along the line is realized.
Stray current that produces in monitoring power supply unit and the power supply system simultaneously through intelligent sensing unit, behind discovery stray current, in time control drainage cabinet will be located rail, reference electrode and survey and prevent the stray current on the terminal and discharge to prevent that stray current from causing electrochemical corrosion harm on a large scale to urban rail transit major structure's reinforced concrete, realize the protection to urban rail transit underground metal structure along the line.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are 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 phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides a track traffic safety control system for power supply unit, includes processing module, alarm module and management module, its characterized in that: also comprises
A shooting module: for monitoring peripheral conditions of the power supply device;
a monitoring module: the power supply equipment monitoring system is used for monitoring the inner circumference condition of the power supply equipment;
a judgment module: judging whether the fault is real according to the double monitoring data of the monitoring module/the shooting module, sending the data to the processing module for processing after the fault is determined, controlling the alarm module to send out an alarm prompt by the processing module, and controlling the management module to send out an operation instruction;
a positioning module: when the monitoring module monitors that the internal periphery of the power supply equipment has an operation fault, the positioning module is positioned to the shooting module corresponding to the monitoring module, and when the shooting module monitors that the external periphery of the power supply equipment has an operation fault, the positioning module is positioned to the monitoring module corresponding to the shooting module.
2. The safety management system for the rail transit power supply equipment according to claim 1, characterized in that: the monitoring module comprises a data acquisition unit, an equipment monitoring unit and a cloud computing platform:
the data acquisition unit acquires data or starts a monitoring mode to collect data actively uploaded by equipment;
the equipment monitoring unit acquires protocol data and transmits the protocol data with cloud data through an HTTPS (hypertext transfer protocol secure protocol);
a cloud computing platform: the data sets and update data are transmitted over HTTPS protocol.
3. The safety management system for the rail transit power supply equipment according to claim 2, characterized in that: the data acquisition unit adopts an EdgexFoundry frame to acquire and forward data; the device monitoring unit acquires data from the ActiveMQ through an MQTT protocol by adopting a SpringBoot and Layui development framework; the cloud computing platform adopts a private cloud framework to build an LSTM fault prediction model.
4. The safety management system for the rail transit power supply equipment according to claim 3, characterized in that: the data acquisition unit sends a request instruction to the equipment terminal to realize data acquisition, analyzes the acquired data, and finally exports the data to an ActiveMQ for the equipment monitoring unit to call the data.
5. The safety management system for the rail transit power supply equipment according to claim 1, characterized in that: the judging module receives the data of the monitoring module and the shooting module, deletes or interpolates the abnormal data, normalizes the data, and finally divides the data set into a training set and a testing set.
6. The safety management system for the rail transit power supply equipment according to claim 3, characterized in that: the LSTM fault prediction model maps the sample data of the characteristic parameters to [0,1] by adopting normalization processing, and the conversion formula is as follows:
wherein:
is the minimum value of the sample data,
is the maximum value of the sample data,
in order to obtain the sample data before conversion,
the sample data generated after conversion.
7. The safety management system for the rail transit power supply equipment according to claim 6, characterized in that: the model prediction deviation formula of the LSTM fault prediction model is as follows:
wherein, the first and the second end of the pipe are connected with each other,
for the number of test sets to be tested,
in order to be a true value of the gas concentration,
for the gas concentration values predicted by the model,
to test the number of concentration values,
the resulting root mean square error was calculated for the n test set data.
8. The safety management system for the rail transit power supply equipment according to claim 1, characterized in that: the management module comprises equipment management, integrated management and two-ticket management, wherein,
the equipment management comprises equipment addition, equipment deletion, equipment inquiry and equipment operation data check;
the comprehensive management comprises the steps of sending an instruction according to the monitoring information, and enabling corresponding inspection equipment and inspection personnel to correspondingly manage the equipment according to the instruction;
the two-ticket management comprises a work ticket and an operation ticket.
9. The safety management system for the rail transit power supply equipment according to claim 8, characterized in that: the equipment newly-added comprises newly-added electrical equipment and newly-added sensing equipment; the equipment operation data viewing comprises viewing data of the on-line electrical equipment and the off-line electrical equipment.
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