CN117674432A - Intelligent power distribution cabinet monitoring system and power distribution cabinet applying same - Google Patents
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 173
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 33
- 229910052802 copper Inorganic materials 0.000 claims description 33
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- 238000013500 data storage Methods 0.000 claims description 12
- 239000003822 epoxy resin Substances 0.000 claims description 11
- 229920000647 polyepoxide Polymers 0.000 claims description 11
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- 238000009529 body temperature measurement Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
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- 239000004593 Epoxy Substances 0.000 description 1
- 241000728173 Sarima Species 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007787 long-term memory Effects 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
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- YHXISWVBGDMDLQ-UHFFFAOYSA-N moclobemide Chemical compound C1=CC(Cl)=CC=C1C(=O)NCCN1CCOCC1 YHXISWVBGDMDLQ-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses an intelligent power distribution cabinet monitoring system and a power distribution cabinet applying the same, and belongs to the technical field of power distribution cabinets. The monitoring system comprises a monitoring controller, a power distribution cabinet data acquisition module, a monitoring alarm module and an adapter plate, wherein the power distribution cabinet data acquisition module is connected to the monitoring controller and comprises an electric parameter acquisition transmitter, a power distribution cabinet internal temperature transmitter and a power distribution module port temperature transmitter; the monitoring alarm module comprises a display screen and an audible and visual alarm which are connected with the monitoring controller; the switching board is provided with a plurality of groups of photoelectric isolation modules, a common-ground wiring seat, a cabinet temperature intervention wiring seat, a circuit breaking intervention wiring seat and an electric parameter intervention wiring seat; the intelligent power distribution cabinet monitoring system and the power distribution cabinet applying the system can intervene in safety hidden trouble in time, and have strong universality; and the result can be predicted according to the currently acquired power distribution cabinet data, and the predicted result has real-time performance, accuracy and completeness.
Description
Technical Field
The invention particularly relates to an intelligent power distribution cabinet monitoring system and a power distribution cabinet applying the system, and belongs to the technical field of power distribution cabinets.
Background
The safe and stable operation of the power distribution cabinet is directly related to normal production and daily life; major potential safety hazards in the operation process of the power distribution cabinet include electric fire, phase loss, overvoltage, overcurrent and the like; in order to ensure the safe operation of the power distribution cabinet, a set of safety monitoring system is required to be configured for the power distribution cabinet, so that the power distribution cabinet can be timely warned when hidden danger occurs, and maintenance personnel can conveniently know the operation condition inside the power distribution cabinet, such as Chinese patent publication number: CN116094155A discloses an intelligent power distribution cabinet monitoring system and a power distribution cabinet applying the system, and real-time data of the power distribution cabinet are sent to a mobile terminal through a power distribution receiving and transmitting module, so that maintenance personnel can know actual conditions of the power distribution cabinet conveniently, and the actual conditions can be found in time when data abnormality occurs; however, the monitoring system with the structure has no intervention measures, can only monitor data, cannot safely intervene in the power distribution cabinet when potential safety hazards occur, has an intervention function in the part of the existing monitoring system on the market, has low universality, and can only be generally suitable for monitoring and intervention of the power distribution cabinet with the corresponding model; in addition, in order to improve predictability of monitoring of the power distribution cabinet, the existing part of monitoring systems adopt a prediction model to predict operation parameters of the power distribution cabinet, training samples are lacked in the early stage of the structure, a large amount of computing resources of the monitoring system are required to be consumed during later training, and an upper computer is adopted for prediction, and a prediction result is fed back to a prediction scheme of the monitoring system, so that a large delay is caused to the prediction result.
Disclosure of Invention
In order to solve the problems, the invention provides an intelligent power distribution cabinet monitoring system and a power distribution cabinet applying the system, which can intervene in safety hidden trouble in time and has strong universality; and the real-time performance, accuracy and completeness of the prediction result can be ensured.
The invention discloses an intelligent power distribution cabinet monitoring system, which comprises:
a monitor controller;
the power distribution cabinet data acquisition module is connected to the monitoring controller and comprises an electric parameter acquisition transmitter, a power distribution cabinet internal temperature transmitter and a power distribution module port temperature transmitter; the electric parameter acquisition transmitter acquires bus current, three-phase voltage, power factors and the like; the temperature transmitter inside the power distribution cabinet collects the total temperature inside the power distribution cabinet, the port temperature transmitter of the port of each power distribution module collects the port temperature of each power distribution module, and as each power distribution module is connected through copper wires, the copper wires have good conductivity, any one of the adjacent power distribution modules has a high temperature phenomenon and can be timely detected by the port temperature transmitter of the power distribution module, so that the fault heating phenomenon of the power distribution module can be timely found through temperature detection;
the monitoring alarm module comprises a display screen connected with the monitoring controller and an audible and visual alarm; the power distribution cabinet data acquisition module acquires power distribution cabinet operation data and sends the power distribution cabinet operation data to the monitoring controller, the monitoring controller sends the acquired data to the display screen for timely display, meanwhile, the acquired data is compared with preset data in the monitoring controller, and when an alarm value is reached, the audible and visual alarm gives an alarm in time;
the switching board is provided with a plurality of groups of photoelectric isolation modules, a common-ground wiring seat, a cabinet temperature intervention wiring seat, a circuit breaking intervention wiring seat and an electric parameter intervention wiring seat; the common ground wire holder is connected to the grounding end of the monitoring controller, and the cabinet temperature intervention wire holder, the circuit breaking intervention wire holder and the electric parameter intervention wire holder are connected to an IO port of the monitoring controller through the photoelectric isolation module; the cabinet temperature intervention wiring seat and the electric parameter intervention wiring seat output digital switch signals or PWM switch signals, and the circuit breaking intervention wiring seat outputs digital switch signals; the adapter plate is directly connected to working intervention equipment of the power distribution cabinet through an electric control switch; the electric control switch is a relay switch circuit and a soft switch circuit. When the monitoring controller monitors that certain acquired data exceeds a set value, the monitoring controller outputs a control instruction corresponding to an IO port, for example, when the temperature of a power distribution cabinet or a power distribution module exceeds a first threshold value, the monitoring controller sends the control instruction to a cabinet temperature intervention wiring seat, the control instruction is a digital switching signal or a PWM switching signal, thereby working intervention equipment signals of the power distribution cabinet, for example, a heat dissipation fan signal is given, the heat dissipation fan is triggered to conduct heat dissipation work, for example, when the temperature of the power distribution cabinet or the power distribution module exceeds a second threshold value, the monitoring controller sends the control instruction to a circuit breaking intervention wiring seat, the circuit breaking intervention wiring seat controls working intervention equipment of the power distribution cabinet through an electric control switch, for example, a circuit breaker auxiliary circuit is controlled to break, so that a main circuit of the circuit breaker is broken, and then, for example, when a power factor is lower than the set value, the electric parameter intervention wiring seat controls a switching module of a power compensation unit to act, so that power compensation is conducted on a bus of the power distribution cabinet; before the monitoring system is applied, the control modes and the quantity of working intervention equipment in the power distribution cabinet and the association relation between the working intervention equipment and a data acquisition module of the power distribution cabinet are determined, and a direct access cabinet temperature intervention wire holder, a circuit breaking intervention wire holder and an electric parameter intervention wire holder are selected; or an electric control switch is connected; the control end of the electric control switch is connected to the cabinet temperature intervention wiring seat, the circuit breaking intervention wiring seat and the electric parameter intervention wiring seat, and the control end of the electric control switch is respectively connected with working intervention equipment and a power supply, so that the power supply size can be selected according to requirements; when the intelligent power distribution cabinet is used, the intervention control mode can be flexibly adjusted according to the structure of the power distribution cabinet; meanwhile, a photoelectric isolation module is arranged between the working intervention equipment and the monitoring controller, so that the monitoring controller can be protected.
Further, the power distribution module port temperature transmitter comprises a copper nose arranged at an input port of the power distribution module, and the copper nose is encapsulated with a temperature measuring unit through epoxy resin; the temperature measuring unit is connected to the monitoring controller through a wiring; the temperature transmitter inside the power distribution cabinet is fixed at the top of the inner side of the power distribution cabinet; the electric parameter acquisition transmitter comprises a contact transmitter or a mutual inductance transmitter sleeved on an input/output port wiring of the power distribution module; the contact transmitter comprises a copper nose, a joint wire is welded on the inner side of the copper nose, and the outer part of the joint wire is encapsulated by epoxy resin; the joint line is connected to the electric parameter sampling module, and the mutual inductance transmitter and the electric parameter sampling module are connected to the monitoring controller;
the copper nose is conveniently connected into the input port or the output port of the power distribution module, and has good electrical conductivity and thermal conductivity, so that the current electrical parameters of the port of the power distribution module can be transmitted to the joint line in real time, or the temperature value can be transmitted to the temperature measuring unit in real time; the front ends of the temperature measuring unit and the joint wire are poured and packaged in the copper nose by epoxy resin, the joint wire transmits electric parameters to the electric parameter acquisition transmitter, and the electric parameter acquisition transmitter is used for sampling and sending the electric parameters to the monitoring controller; the temperature measurement unit transmits the real-time acquisition temperature to the monitoring controller;
further, when the input port or the output port of the power distribution module is provided with the contact type transmitter and the power distribution module port temperature transmitter at the same time, the contact type transmitter and the power distribution module port temperature transmitter are formed by an integrated acquisition unit; the integrated acquisition unit comprises a copper nose, a joint wire is welded in the copper nose, and an insulating heat-shrinkable sleeve is sleeved outside the joint wire; a temperature measuring unit is attached to the outside of the insulating heat-shrinkable sleeve; the temperature measuring unit and the insulating heat-shrinkable sleeve are encapsulated on the inner side of the copper nose through epoxy resin; when the same port of the power distribution module needs to be used for temperature measurement and electrical parameter measurement, an integrated acquisition unit can be adopted, and synchronous acquisition of temperature and electrical parameters is realized by utilizing a copper nose.
Further, the monitoring controller is also connected with a monitoring prediction module, the monitoring prediction module is connected to the monitoring controller, and the monitoring prediction module comprises two groups of prediction operation modules; the two groups of prediction operation modules are composed of prediction controllers; the monitoring controller and the monitoring prediction module are respectively in communication connection with the temporary storage module; the temporary storage module is accessed to the upper computer through the network communication module; the upper computer is in communication connection with a data storage unit, a model memory and a prediction optimization module; during operation, the monitoring controller obtains the power distribution cabinet monitoring data through the power distribution cabinet data acquisition module, the power distribution cabinet monitoring data are respectively forwarded to the temporary storage module and the prediction operation module in a working state, then, the monitoring controller compares the power distribution cabinet monitoring data with a threshold value, the prediction operation module predicts the result after obtaining the power distribution cabinet monitoring data, the prediction result is fed back to the monitoring controller, the monitoring controller displays the prediction data in real time through the monitoring alarm module, the prediction result is compared with a set threshold value, and the monitoring alarm module alarms when the set threshold value is reached.
Further, the temporary storage module is formed by two storage units or is formed by dividing one storage unit into two storage areas, and the two storage units or the two storage areas are adopted, and one storage area is used for storing a prediction model sent by the upper computer, so that data transmission between the upper computer and the monitoring prediction module is realized; and the other is used for storing the monitoring data of the power distribution cabinet forwarded by the monitoring controller, so that the data transmission between the monitoring controller and the upper computer is realized.
Further, the upper computer acquires monitoring data acquired by the power distribution cabinet data acquisition module from the temporary storage module through the network communication module, the monitoring data are stored in the data storage unit, the prediction optimization module interacts with the data storage unit and the model memory respectively, and a general prediction model is acquired from the model memory, wherein the model memory stores prediction models of all models, each prediction model has completed basic training, and when the prediction models of all models are subjected to basic training, the prediction models are trained by collecting historical data of the power distribution cabinets of all models to obtain a basic general prediction model of corresponding models; the general prediction model can be used for carrying out rough prediction on a certain type of power distribution cabinet, continuously collecting operation data in the operation state of the power distribution cabinet, continuously optimizing the general prediction model through the operation data to enable the general prediction model to be more matched with the monitored power distribution cabinet, and when the general prediction model is in operation, the upper computer is used for calling the prediction model from the model memory according to the type of the power distribution cabinet, sending the prediction model to the temporary storage module, waiting for the monitoring prediction module to receive and update, and at the moment, monitoring the collection data sent by the prediction module from the monitoring controller and carrying out result prediction through the prediction model; meanwhile, the upper computer continuously sends the monitoring data of the power distribution cabinet in the temporary storage module to the data storage unit, the prediction optimization module acquires the monitoring data of the power distribution cabinet from the model memory, takes the monitoring data as a training sample, continuously carries out training optimization on a general prediction model to obtain an optimized prediction model, and periodically sends the optimized prediction model to the temporary storage module, waits for the monitoring prediction module to receive and update, and two groups of prediction operation modules alternately participate in the prediction work; the other group of prediction operation modules continuously conduct prediction work, and when a certain group of prediction operation modules complete the reading and updating of the prediction model, the monitoring controller switches the prediction operation modules to a working state, and the other group of prediction operation modules are switched to a silent state.
Further, the two groups of prediction operation modules predict the working alternation time points as follows: when the prediction model in a certain group of prediction operation modules is updated, a switching request is sent to a monitoring controller, the monitoring controller waits until the monitoring controller sends the last group of real-time acquisition data to the currently operated prediction operation module, the working states of the two groups of prediction operation modules are switched, the monitoring controller sends the real-time acquisition data to the switched prediction operation module, after the switching, the monitoring controller reads the prediction operation module in the working state before switching, outputs the last group of prediction data, and then waits for receiving the prediction operation module after switching to output the prediction data; the two groups of prediction operation modules are used for predicting the operation in the alternating mode, so that the timeliness of receiving the collected data by the prediction operation module in the working state after switching can be guaranteed, meanwhile, the completeness of receiving the collected data by the prediction operation module in the working state before switching can be guaranteed, and in addition, the continuity of outputting the prediction result can be guaranteed in the alternating mode.
The intelligent power distribution cabinet is applied to the intelligent power distribution cabinet monitoring system and further comprises a cabinet body, wherein an incoming line unit, a power distribution module and an outgoing line unit are arranged on the inner side of the cabinet body; the wire inlet unit is connected to the input end of the power distribution module, and the output end of the power distribution module is connected to the wire outlet unit; the cabinet body is also internally provided with working intervention equipment; the working intervention equipment comprises a heat radiation fan, a circuit breaker or a compensation unit which are fixed on the inner side of the cabinet body; the circuit breaker is connected in series between the incoming line unit and the power distribution module, and the compensation unit is connected in parallel with the outgoing line unit; and the control end of the cooling fan, the control end of the auxiliary loop of the circuit breaker and the control end of the switching module of the compensation unit are connected into the intelligent power distribution cabinet monitoring system.
Compared with the prior art, the intelligent power distribution cabinet monitoring system and the power distribution cabinet applying the system can realize monitoring of the running state of the power distribution cabinet, can intervene in time when hidden danger occurs, can flexibly adjust the control mode according to the type of the power distribution cabinet, and have strong universality; the model is used for remote training and optimization, the optimized model is used for a field prediction mode, prediction result delay is not caused, the model can be guaranteed to be continuously optimized, the model is enabled to be matched with a monitored power distribution cabinet, accordingly prediction accuracy is guaranteed, the monitoring prediction module adopts two groups of mutually redundant modes, one group of prediction work is achieved, and the other group of prediction work is silent or model receiving and updating are carried out; and when the two groups of prediction operation modules are switched, the integrity and the continuity of the prediction result can be ensured, and the phenomenon of frame dropping of data or frame dropping of the prediction result can not occur.
Drawings
Fig. 1 is a schematic overall structure of embodiment 1 of the present invention.
FIG. 2 is a schematic diagram of a power distribution module port temperature transmitter of the present invention.
FIG. 3 is a schematic diagram of a touch transmitter of the present invention.
Fig. 4 is a schematic diagram of an integrated acquisition unit according to the present invention.
Fig. 5 is a schematic overall structure of embodiment 2 of the present invention.
Fig. 6 is a schematic workflow diagram of embodiment 2 of the present invention.
Fig. 7 is a schematic diagram of a working state switching flow of two sets of prediction operation modules according to embodiment 2 of the present invention.
Reference numerals: 1. copper nose, 2, epoxy, 3, temperature measuring unit, 4, joint line, 5, electric parameter acquisition transmitter, 6, insulating heat shrinkage bush.
Detailed Description
Example 1:
the intelligent power distribution cabinet monitoring system as shown in fig. 1 comprises:
a monitor controller;
the power distribution cabinet data acquisition module is connected to the monitoring controller and comprises an electric parameter acquisition transmitter, a power distribution cabinet internal temperature transmitter and a power distribution module port temperature transmitter; the electric parameter acquisition transmitter acquires bus current, three-phase voltage, power factors and the like; the temperature transmitter inside the power distribution cabinet collects the total temperature inside the power distribution cabinet, the port temperature transmitter of the port of each power distribution module collects the port temperature of each power distribution module, and as each power distribution module is connected through copper wires, the copper wires have good conductivity, any one of the adjacent power distribution modules has a high temperature phenomenon and can be timely detected by the port temperature transmitter of the power distribution module, so that the fault heating phenomenon of the power distribution module can be timely found through temperature detection;
the monitoring alarm module comprises a display screen connected with the monitoring controller and an audible and visual alarm; the power distribution cabinet data acquisition module acquires power distribution cabinet operation data and sends the power distribution cabinet operation data to the monitoring controller, the monitoring controller sends the acquired data to the display screen for timely display, meanwhile, the acquired data is compared with preset data in the monitoring controller, and when an alarm value is reached, the audible and visual alarm gives an alarm in time;
the switching board is provided with a plurality of groups of photoelectric isolation modules, a common-ground wiring seat, a cabinet temperature intervention wiring seat, a circuit breaking intervention wiring seat and an electric parameter intervention wiring seat; the common ground wire holder is connected to the grounding end of the monitoring controller, and the cabinet temperature intervention wire holder, the circuit breaking intervention wire holder and the electric parameter intervention wire holder are connected to an IO port of the monitoring controller through the photoelectric isolation module; the cabinet temperature intervention wiring seat and the electric parameter intervention wiring seat output digital switch signals or PWM switch signals, and the circuit breaking intervention wiring seat outputs digital switch signals; the adapter plate is directly connected to working intervention equipment of the power distribution cabinet through an electric control switch; the electric control switch is a relay switch circuit and a soft switch circuit. When the monitoring controller monitors that certain acquired data exceeds a set value, the monitoring controller outputs a control instruction corresponding to an IO port, for example, when the temperature of a power distribution cabinet or a power distribution module exceeds a first threshold value, the monitoring controller sends the control instruction to a cabinet temperature intervention wiring seat, the control instruction is a digital switching signal or a PWM switching signal, thereby working intervention equipment signals of the power distribution cabinet, for example, a heat dissipation fan signal is given, the heat dissipation fan is triggered to conduct heat dissipation work, for example, when the temperature of the power distribution cabinet or the power distribution module exceeds a second threshold value, the monitoring controller sends the control instruction to a circuit breaking intervention wiring seat, the circuit breaking intervention wiring seat controls working intervention equipment of the power distribution cabinet through an electric control switch, for example, a circuit breaker auxiliary circuit is controlled to break, so that a main circuit of the circuit breaker is broken, and then, for example, when a power factor is lower than the set value, the electric parameter intervention wiring seat controls a switching module of a power compensation unit to act, so that power compensation is conducted on a bus of the power distribution cabinet; before the monitoring system is applied, the control modes and the quantity of working intervention equipment in the power distribution cabinet and the association relation between the working intervention equipment and a data acquisition module of the power distribution cabinet are determined, and a direct access cabinet temperature intervention wire holder, a circuit breaking intervention wire holder and an electric parameter intervention wire holder are selected; or an electric control switch is connected; the control end of the electric control switch is connected to the cabinet temperature intervention wiring seat, the circuit breaking intervention wiring seat and the electric parameter intervention wiring seat, and the control end of the electric control switch is respectively connected with working intervention equipment and a power supply, so that the power supply size can be selected according to requirements; when the intelligent power distribution cabinet is used, the intervention control mode can be flexibly adjusted according to the structure of the power distribution cabinet; meanwhile, a photoelectric isolation module is arranged between the working intervention equipment and the monitoring controller, so that the monitoring controller can be protected.
As shown in fig. 2 and 3, the power distribution module port temperature transmitter comprises a copper nose 1 installed at an input port of a power distribution module, wherein the copper nose 1 is encapsulated with a temperature measuring unit 3 through epoxy resin 2; the temperature measuring unit 3 is connected to a monitoring controller through a wiring; the temperature transmitter inside the power distribution cabinet is fixed at the top of the inner side of the power distribution cabinet; the electric parameter acquisition transmitter comprises a contact transmitter or a mutual inductance transmitter sleeved on an input/output port wiring of the power distribution module; the contact transmitter comprises a copper nose 1, wherein a joint wire 4 is welded on the inner side of the copper nose 1, and the outer part of the joint wire 4 is encapsulated by epoxy resin 2; the joint line 4 is connected to an electric parameter sampling module, and the mutual inductance transmitter and the electric parameter sampling module are connected to a monitoring controller;
the copper nose 1 is conveniently connected into an input port or an output port of the power distribution module, and the copper nose 1 has good electrical conductivity and thermal conductivity, so that the current electrical parameters of the port of the power distribution module can be transmitted to the joint line 4 in real time, or the temperature value can be transmitted to the temperature measuring unit 3 in real time; the front ends of the temperature measuring unit 3 and the joint wire 4 are poured and packaged in the copper nose 1 by epoxy resin 2, the joint wire 4 transmits electric parameters to the electric parameter acquisition transmitter 5, and the electric parameter acquisition transmitter 5 is used for sampling and sending the electric parameters to the monitoring controller; the temperature measuring unit 3 transmits the real-time acquisition temperature to the monitoring controller;
as shown in fig. 4, when the input port or the output port of the power distribution module is provided with the contact type transmitter and the power distribution module port temperature transmitter at the same time, the contact type transmitter and the power distribution module port temperature transmitter are formed by an integrated acquisition unit; the integrated acquisition unit comprises a copper nose 1, a joint wire 4 is welded in the copper nose 1, and an insulating heat-shrinkable sleeve is sleeved outside the joint wire 4; the outside of the insulating heat-shrinkable sleeve 6 is attached with a temperature measuring unit 3; the temperature measuring unit 3 and the insulating heat-shrinkable sleeve 6 are packaged on the inner side of the copper nose 1 through epoxy resin 2; when the same port of the power distribution module needs to perform temperature measurement and electrical parameter measurement, an integrated acquisition unit can be adopted, and synchronous acquisition of temperature and electrical parameters is realized by using one copper nose 1.
Example 2:
the intelligent power distribution cabinet monitoring system shown in fig. 5 is characterized in that the monitoring controller is also connected with a monitoring prediction module, the monitoring prediction module is connected to the monitoring controller, and the monitoring prediction module comprises two groups of prediction operation modules; the two groups of prediction operation modules are composed of prediction controllers; the monitoring controller and the monitoring prediction module are respectively in communication connection with the temporary storage module; the temporary storage module is accessed to the upper computer through the network communication module; the upper computer is in communication connection with a data storage unit, a model memory and a prediction optimization module; during operation, the monitoring controller obtains the power distribution cabinet monitoring data through the power distribution cabinet data acquisition module, the power distribution cabinet monitoring data are respectively forwarded to the temporary storage module and the prediction operation module in a working state, then, the monitoring controller compares the power distribution cabinet monitoring data with a threshold value, the prediction operation module predicts the result after obtaining the power distribution cabinet monitoring data, the prediction result is fed back to the monitoring controller, the monitoring controller displays the prediction data in real time through the monitoring alarm module, the prediction result is compared with a set threshold value, and the monitoring alarm module alarms when the set threshold value is reached.
The temporary storage module is composed of two storage units or is composed of two storage areas divided by one storage unit, and the two storage units or the two storage areas are adopted, wherein one storage area is used for storing a prediction model sent by an upper computer, so that data transmission between the upper computer and the monitoring prediction module is realized; and the other is used for storing the monitoring data of the power distribution cabinet forwarded by the monitoring controller, so that the data transmission between the monitoring controller and the upper computer is realized.
As shown in fig. 6, the upper computer acquires monitoring data acquired by the power distribution cabinet data acquisition module from the temporary storage module through the network communication module, stores the monitoring data in the data storage unit, interacts with the data storage unit and the model memory respectively, and acquires a general prediction model from the model memory, wherein the model memory stores prediction models of all models, each prediction model has completed basic training, and when the prediction models of all models are subjected to basic training, the prediction models are trained by collecting historical data of the power distribution cabinets of all models to obtain a basic general prediction model of a corresponding model; the general prediction model can be used for carrying out rough prediction on a certain type of power distribution cabinet, continuously collecting operation data in the operation state of the power distribution cabinet, continuously optimizing the general prediction model through the operation data to enable the general prediction model to be more matched with the monitored power distribution cabinet, and when the general prediction model is in operation, the upper computer is used for calling the prediction model from the model memory according to the type of the power distribution cabinet, sending the prediction model to the temporary storage module, waiting for the monitoring prediction module to receive and update, and at the moment, monitoring the collection data sent by the prediction module from the monitoring controller and carrying out result prediction through the prediction model; meanwhile, the upper computer continuously sends the monitoring data of the power distribution cabinet in the temporary storage module to the data storage unit, the prediction optimization module acquires the monitoring data of the power distribution cabinet from the model memory, takes the monitoring data as a training sample, continuously carries out training optimization on a general prediction model to obtain an optimized prediction model, and periodically sends the optimized prediction model to the temporary storage module, waits for the monitoring prediction module to receive and update, and two groups of prediction operation modules alternately participate in the prediction work; the other group of prediction operation modules continuously conduct prediction work, and when a certain group of prediction operation modules complete the reading and updating of the prediction model, the monitoring controller switches the prediction operation modules to a working state, and the other group of prediction operation modules are switched to a silent state.
The method comprises the steps of establishing and training a prediction model, namely establishing a current prediction model, a voltage prediction model, a power factor prediction model, a correlation factor prediction model, a bus load prediction model and the like according to requirements, for example, establishing a bus load prediction model of a power distribution cabinet, acquiring current data and temperature data on a bus through a power distribution cabinet data acquisition module (or collecting historical acquisition data of the power distribution cabinet of the model), and acquiring a first training sample set of the power distribution cabinet, wherein each training sample in the first training sample set comprises current data of each historical moment; the label of the data is the current of the bus corresponding to the time; and then, training to obtain a bus load prediction model by using a first training sample set through machine learning (LSTM model, ARIMA model or SARIMA model), establishing a long-term and short-term memory neural network, and training a load information prediction model.
As shown in fig. 7, the two groups of prediction operation modules predict the working alternation time points as follows: when the prediction model in a certain group of prediction operation modules is updated, a switching request is sent to a monitoring controller, the monitoring controller waits until the monitoring controller sends the last group of real-time acquisition data to the currently operated prediction operation module, the working states of the two groups of prediction operation modules are switched, the monitoring controller sends the real-time acquisition data to the switched prediction operation module, after the switching, the monitoring controller reads the prediction operation module in the working state before switching, outputs the last group of prediction data, and then waits for receiving the prediction operation module after switching to output the prediction data; the two groups of prediction operation modules are used for predicting the operation in the alternating mode, so that the timeliness of receiving the collected data by the prediction operation module in the working state after switching can be guaranteed, meanwhile, the completeness of receiving the collected data by the prediction operation module in the working state before switching can be guaranteed, and in addition, the continuity of outputting the prediction result can be guaranteed in the alternating mode.
The intelligent power distribution cabinet is applied to the intelligent power distribution cabinet monitoring system and further comprises a cabinet body, wherein an incoming line unit, a power distribution module and an outgoing line unit are arranged on the inner side of the cabinet body; the wire inlet unit is connected to the input end of the power distribution module, and the output end of the power distribution module is connected to the wire outlet unit; the cabinet body is also internally provided with working intervention equipment; the working intervention equipment comprises a heat radiation fan, a circuit breaker or a compensation unit which are fixed on the inner side of the cabinet body; the circuit breaker is connected in series between the incoming line unit and the power distribution module, and the compensation unit is connected in parallel with the outgoing line unit; and the control end of the cooling fan, the control end of the auxiliary loop of the circuit breaker and the control end of the switching module of the compensation unit are connected into the intelligent power distribution cabinet monitoring system.
The above embodiments are merely preferred embodiments of the present invention, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are therefore intended to be embraced therein.
Claims (8)
1. An intelligent power distribution cabinet monitored control system, its characterized in that: comprising the following steps:
a monitor controller;
the power distribution cabinet data acquisition module is connected to the monitoring controller and comprises an electric parameter acquisition transmitter, a power distribution cabinet internal temperature transmitter and a power distribution module port temperature transmitter;
the monitoring alarm module comprises a display screen connected with the monitoring controller and an audible and visual alarm;
the switching board is provided with a plurality of groups of photoelectric isolation modules, a common-ground wiring seat, a cabinet temperature intervention wiring seat, a circuit breaking intervention wiring seat and an electric parameter intervention wiring seat; the common ground wire holder is connected to the grounding end of the monitoring controller, and the cabinet temperature intervention wire holder, the circuit breaking intervention wire holder and the electric parameter intervention wire holder are connected to an IO port of the monitoring controller through the photoelectric isolation module; the cabinet temperature intervention wiring seat and the electric parameter intervention wiring seat output digital switch signals or PWM switch signals, and the circuit breaking intervention wiring seat outputs digital switch signals; the adapter plate is directly connected to working intervention equipment of the power distribution cabinet through an electric control switch; the electric control switch is a relay switch circuit and a soft switch circuit.
2. The intelligent power distribution cabinet monitoring system of claim 1, wherein: the power distribution module port temperature transmitter comprises a copper nose arranged at an input port of the power distribution module, and the copper nose is encapsulated with a temperature measuring unit through epoxy resin; the temperature measuring unit is connected to the monitoring controller through a wiring; the temperature transmitter inside the power distribution cabinet is fixed at the top of the inner side of the power distribution cabinet; the electric parameter acquisition transmitter comprises a contact transmitter or a mutual inductance transmitter sleeved on an input/output port wiring of the power distribution module; the contact transmitter comprises a copper nose, a joint wire is welded on the inner side of the copper nose, and the outer part of the joint wire is encapsulated by epoxy resin; the joint line is connected to the electric parameter sampling module, and the mutual inductance transmitter and the electric parameter sampling module are connected to the monitoring controller.
3. The intelligent power distribution cabinet monitoring system of claim 2, wherein: when the input port or the output port of the power distribution module is provided with the contact type transmitter and the power distribution module port temperature transmitter at the same time, the contact type transmitter and the power distribution module port temperature transmitter are formed by an integrated acquisition unit; the integrated acquisition unit comprises a copper nose, a joint wire is welded in the copper nose, and an insulating heat-shrinkable sleeve is sleeved outside the joint wire; a temperature measuring unit is attached to the outside of the insulating heat-shrinkable sleeve; the temperature measuring unit and the insulating heat-shrinkable sleeve are packaged on the inner side of the copper nose through epoxy resin.
4. The intelligent power distribution cabinet monitoring system of claim 1, wherein: the monitoring controller is also connected with a monitoring prediction module, the monitoring prediction module is connected to the monitoring controller, and the monitoring prediction module comprises two groups of prediction operation modules; the two groups of prediction operation modules are composed of prediction controllers; the monitoring controller and the monitoring prediction module are respectively in communication connection with the temporary storage module; the temporary storage module is accessed to the upper computer through the network communication module; and the upper computer is in communication connection with a data storage unit, a model memory and a prediction optimization module.
5. The intelligent power distribution cabinet monitoring system of claim 4 wherein: the temporary storage module is composed of two storage units or is composed of two storage areas divided by one storage unit.
6. The intelligent power distribution cabinet monitoring system of claim 4 wherein: the upper computer acquires monitoring data acquired by the power distribution cabinet data acquisition module from the temporary storage module through the network communication module, stores the monitoring data in the data storage unit, interacts with the data storage unit and the model memory respectively, acquires a general prediction model from the model memory, acquires the monitoring data from the data storage unit, takes the monitoring data as a training sample of the prediction model, continuously carries out training optimization on the prediction model, and periodically sends the prediction model which is completed to the temporary storage module, two groups of prediction operation modules alternately participate in prediction work, and after the prediction model in the temporary storage module is updated, the prediction operation module in an idle mode reads the prediction model in the temporary storage module and updates the prediction model; the other group of prediction operation modules continuously conduct prediction work, and when a certain group of prediction operation modules complete the reading and updating of the prediction model, the monitoring controller switches the prediction operation modules to a working state, and the other group of prediction operation modules are switched to a silent state.
7. The intelligent power distribution cabinet monitoring system of claim 6 wherein: the two groups of prediction operation modules predict working alternation time points as follows: when the prediction model in a certain group of prediction operation modules is updated, a switching request is sent to the monitoring controller, the monitoring controller waits until the monitoring controller sends the last group of real-time acquisition data to the currently-working prediction operation module, the working states of the two groups of prediction operation modules are switched, the monitoring controller sends the real-time acquisition data to the switched prediction operation module, after the switching, the monitoring controller reads the prediction operation module in the working state before switching, outputs the last group of prediction data, and then waits for receiving the switched prediction operation module to output the prediction data.
8. An intelligent power distribution cabinet applying the intelligent power distribution cabinet monitoring system of any one of claims 1 to 7, characterized in that: the power distribution cabinet further comprises a cabinet body, wherein an incoming line unit, a power distribution module and an outgoing line unit are arranged on the inner side of the cabinet body; the wire inlet unit is connected to the input end of the power distribution module, and the output end of the power distribution module is connected to the wire outlet unit; the cabinet body is also internally provided with working intervention equipment; the working intervention equipment comprises a heat radiation fan, a circuit breaker or a compensation unit which are fixed on the inner side of the cabinet body; the circuit breaker is connected in series between the incoming line unit and the power distribution module, and the compensation unit is connected in parallel with the outgoing line unit; and the control end of the cooling fan, the control end of the auxiliary loop of the circuit breaker and the control end of the switching module of the compensation unit are connected into the intelligent power distribution cabinet monitoring system.
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| WO2017084186A1 (en) * | 2015-11-18 | 2017-05-26 | 华南理工大学 | System and method for automatic monitoring and intelligent analysis of flexible circuit board manufacturing process |
| CN106849366A (en) * | 2017-03-24 | 2017-06-13 | 合肥羿振电力设备有限公司 | A kind of power distribution cabinet intellectual monitoring management system |
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