CN110412926A - A kind of electric power channel ambient intelligence monitoring system based on LoRa technology - Google Patents
A kind of electric power channel ambient intelligence monitoring system based on LoRa technology Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
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Abstract
The present invention relates to power channel monitoring technology fields, more particularly to a kind of electric power channel ambient intelligence monitoring system based on LoRa technology, the environmental information in electric power channel environment can be acquired continuous, dynamically, in real time, and keypoint part includes the running state information of cable and cable intermediate joint, and collected information is sent respectively to monitoring center or the mobile monitor end of intelligent Actuator and distal end.By the operating status for monitoring the live transmission line of electricity of system feedback, intelligent Actuator can be started automatically according to preset service condition, stop or other execute movement, also it can receive distally to execute instruction act accordingly and environment be adjusted, so as to improve the operating status or environment of transmission line of electricity in electric power channel conditions.Meanwhile the present invention is based on the three-phase imbalance adjustment control method that above-mentioned intelligent monitor system also proposed a kind of multi-data fusion, it can more effectively improve the running environment of transmission line of electricity in electric power channel conditions.
Description
Technical field
The present invention relates to power channel monitoring technology field more particularly to a kind of electric power channel environment based on LoRa technology
Intelligent monitor system.
Background technique
Power cable is the key that the primary equipment of urban power distribution network, in order to guarantee the operation of distribution network system, promotion pair
Early warning and the Ability of emergency management of electric power channel inner cable, cable intermediate joint failure or emergency event guarantee operation maintenance personnel work
The safety for making environment carries out continuous, dynamic, real-time dynamic monitoring to electric power channel, and it is intelligent, long-range to environmental abnormality into
Row actively improves and intervenes particularly significant.
Present electric power channel environmental monitoring has the following problems:
1. lacking to the dynamic of electric power channel environment, real-time, continuous monitoring capacity.Usual power cable layer is in electric power
In channel or tunnel, environment is opposite to be occluded, and electric power channel is easy accumulation pernicious gas and water, and harmful gas concentration is excessively high or long-pending
Water seriously can all cause the danger of operation maintenance personnel or O&M difficult.When O&M, existing technical solution is main or scene is supervised
It surveys, is influenced by work surface, can not achieve continuous, dynamic, real-time monitoring.
2. lacking the intelligent intervention capacity to electric power channel environment.Because every disk cable has fixed length, in order to lay
Longer cable run, it is necessary to which multistage is connected by cable intermediate joint.The of low quality of cable intermediate joint, connection are not
Tightly, contact resistance is excessive, and the exception of transition joint working condition timely cannot be found and be handled in the process of running, can be caused
It overheats cable connector and punctures insulation, cause electric power channel that fire occurs.Existing technology cannot find becoming for dangerous generation
Gesture, and actively make counter-measure.
3. lacking the information transmission means for being suitble to electric power channel conditions.Electric power channel geographical location span is big, inside channel
Wireless signal covering is poor, and the various kinds of sensors, intelligent controller and remote monitoring terminal in channel realize that remote-wireless is logical
Letter is more difficult or communication quality is not good enough.And it is laid with the higher cost of cable network, maintenance difficulties are big.
Summary of the invention
The technical problem to be solved in the present invention are as follows: provide a kind of based on LoRa technology electric power channel ambient intelligence monitoring system
System includes cable and cable with continuous, dynamic, the real-time environmental information acquired in electric power channel environment and keypoint part
The running state information of transition joint, and collected information is sent respectively to the monitoring center of intelligent Actuator and distal end
Or mobile monitor end.Intelligent Actuator can be started automatically according to preset service condition, be stopped or other execution
Movement.Intelligent Actuator also can receive remote monitoring center or executing instruction for mobile monitor end is executed accordingly
Movement.By monitoring the operating status of the live transmission line of electricity of system feedback, operation ring of the intelligent Actuator to transmission line of electricity
The automatic adjustment in border, or be adjusted according to remote control commands, so as to improve the operation of transmission line of electricity in electric power channel conditions
State or environment avoid that power failure occurs, to improve the reliability of transmission line of electricity, ensure power supply quality.And it solves
Networking in existing electric power channel environment and the problems such as information exchange is difficult and O&M cost is high.Meanwhile the present invention is based on upper
Stating intelligent monitor system also proposed a kind of three-phase imbalance adjustment control method of multi-data fusion, can more have and effectively change
The running environment of transmission line of electricity in kind electric power channel conditions.
Technical solution of the present invention are as follows: a kind of electric power channel ambient intelligence monitoring system based on LoRa technology, including environment
Monitoring modular (1), cable monitoring running state module (2), cable intermediate joint monitoring running state module (3), LoRa gateway/
Base station (4), LoRa node module (5), Internet network (6), remote terminal unit RTU (7), three-phase imbalance regulating device
(8), single-chip microcontroller (9), intelligent Actuator (10), remote monitoring center computer (11), telemedicine education end (12), and
The power supply module (13) of each equipment and module, the environment monitoring module (2) include the biography connecting respectively with the single-chip microcontroller (9)
Sensor (14), the sensor (14) are set to inside the electric power channel for monitoring environmental parameter, and the single-chip microcontroller (9) is logical
Bus connection LoRa node module (5) is crossed, single-chip microcontroller (9) judges that environmental parameter reaches preset threshold in the electric power channel
When, the LoRa network and Internet network (6) being made up of LoRa gateway/base station (4) and LoRa node module (5) respectively to
Intelligent Actuator (10), remote monitoring center computer (11) and telemedicine education end (12) send observing and controlling information, described
Cable monitoring running state module (2) includes the temperature sensor (15) connecting respectively with the single-chip microcontroller (9), and the temperature passes
Sensor (15) is set to cable surface for monitoring cable surface temperature, the cable intermediate joint monitoring running state module
It (3) include the temperature sensor (16) being connect respectively with the single-chip microcontroller (9), the temperature sensor of single-chip microcontroller (9) connection
(16) it is placed in cable intermediate joint and judges the cable surface for monitoring the temperature of cable intermediate joint, single-chip microcontroller (9)
Or/and the cable intermediate joint temperature reach preset temperature threshold when, by LoRa network respectively to remote terminal unit
RTU (7), three-phase imbalance regulating device (8), intelligent Actuator (10), remote monitoring center computer (11) and long-range shifting
Dynamic monitoring client (12) send observing and controlling information.
Further, the sensor (14) is Temperature Humidity Sensor (17), and the intelligent Actuator (10) is intelligence
Ventilation device (19) and/or intelligent cooling dehumidification device (20), Temperature Humidity Sensor (17) are set to inside the electric power channel
For monitoring temperature and humidity, when single-chip microcontroller (9) judges that temperature and humidity reaches preset first threshold value in the electric power channel, pass through
LoRa network sends observing and controlling information to intelligent Actuator (10), starts Intelligent ventilating apparatus (19) and/or intelligent cooling dehumidifying
Device (20) simultaneously improves power channel environment, to electric power channel in temperature and humidity be lower than first threshold when stop working, it is no
Then, when single-chip microcontroller (9) judges that temperature and humidity reaches default second threshold in electric power channel, pass through LoRa network and Internet
Alarm signal is sent to remote monitoring center computer (11) and/or telemedicine education end (12) by network (6).
Further, the sensor (14) is combustible gas sensor (21) and/or toxic gas sensor (22), institute
Stating intelligent Actuator (10) is Intelligent ventilating apparatus (19), combustible gas sensor (21) and/or toxic gas sensor
(22) it is set to for monitoring the gas concentration of fuel gas and/or toxic gas inside the electric power channel, single-chip microcontroller (9) is sentenced
When gas concentration reaches preset first threshold value in the disconnected electric power channel out, sent out by LoRa network to Intelligent ventilating apparatus (19)
Observing and controlling information is sent, Intelligent ventilating apparatus (19) are started and power channel environment is improved, arrives gas concentration in electric power channel
It stops working when lower than first threshold, otherwise, single-chip microcontroller (9) judges that gas concentration reaches default second threshold in electric power channel
When, alarm signal is sent to by remote monitoring center computer (11) and/or remote by LoRa network and Internet network (6)
Journey mobile monitor end (12).
Further, the sensor (14) is oxygen sensor (23), and the intelligent Actuator (10) is that intelligence is logical
Wind apparatus (19), oxygen sensor (23) are set to inside the electric power channel for monitoring oxygen gas concentration, single-chip microcontroller (9)
When judging in the electric power channel gas concentration lower than preset first threshold value, by LoRa network to Intelligent ventilating apparatus (19)
Observing and controlling information is sent, Intelligent ventilating apparatus (19) are started and power channel environment is improved, it is dense to arrive gas in electric power channel
Degree stops working when being higher than first threshold, and otherwise, single-chip microcontroller (9) judges that gas concentration is lower than default second threshold in electric power channel
When value, by LoRa network and Internet network (6) by alarm signal be sent to remote monitoring center computer (11) and/or
Telemedicine education end (12).
Further, the single-chip microcontroller (9) judges that the cable surface or/and the temperature of the cable intermediate joint arrive
When up to preset temperature threshold, observing and controlling information is sent to intelligent Actuator (10) by LoRa network, starts intelligent Actuator
(10) cooling down and to cable or/and the cable intermediate joint is low to cable or/and the cable intermediate joint temperature
It stops working when first threshold, otherwise, the single-chip microcontroller (9) judges that temperature reaches default second threshold in the electric power channel
When value, by LoRa network and Internet network (6) to remote monitoring center computer (11) and/or telemedicine education end
(12) observing and controlling information is sent, active control intervention is carried out by operation maintenance personnel, it is low to cable or/and the cable intermediate joint temperature
It stops working when first threshold, otherwise, the single-chip microcontroller (9) judges that temperature reaches default third threshold in the electric power channel
When value, control instruction is issued to remote terminal unit RTU (7) by LoRa network and Internet network (6), is opened long-range whole
The overcurrent protection relay of end device RTU (7).
Further, the temperature sensor (16) is DS1820 temperature sensor (24), and the single-chip microcontroller (9) of connection is
AT89C52 single-chip microcontroller (25), AT89C52 single-chip microcontroller (25) are connected with LoRa node module (4) by RS485 bus, cable fortune
Row status monitoring uses point type temperature monitoring, several temperature sensors are according to the requirement scattered resettlement of monitoring in important on cable
Monitoring position.
Further, the temperature sensor (15) is GSDTS-04-10 temperature sensor (26), GSDTS-04-10 temperature
Spending sensor (26) is distributed optical fiber temperature sensor, three distribution type fiber-optics of GSDTS-04-10 temperature sensor (26)
The surface of insulating layer of cable is respectively disposed on according to 120 ° of angles.
Further, the Intelligent ventilating apparatus (19) includes paddle motor (27), A.C. contactor (28).
Further, the LoRa node module (4) is EML3047 (29), and EML3047 (29) includes STM32L071
(30) and SX1278 (31), wherein STM32L071 is responsible for RTOS, LoRa protocol stack, cloud docking agreement, Encryption Algorithm and AT
The operation of instruction, SX1278 carry out LoRa radio-frequency modulations demodulation process.EML3047 module scheme is integrated with peripheral crystal oscillator, radio frequency
The circuits such as matching.
Further, the remote monitoring center computer (11) and telemedicine education end (12) include human-machine operation
The virtual control panel (32) of interface intelligent Actuator, for remotely controlling intelligent Actuator (10).
Further, the three-phase imbalance regulating device (8) includes load-side three-phase imbalance regulating device (33)
And/or source side three-phase imbalance regulating device (34), the load-side three-phase imbalance regulating device (33) includes commutation
Module (35), one-chip computer module (9), signal detection module (36) and LoRa node module (4), signal detection module (36) input
It is connected to three-phase wire, signal detection module (36) output is connected with one-chip computer module (9), and one-chip computer module (9) passes through bus
It connects LoRa node module (4), and is connected to LoRa network, the output of one-chip computer module (9) and the control of commutation module (35)
Circuit is connected, and the input side of commutation module (35) major loop and A, B, C threephase cable of distribution line connect, the commutation
The input side of module (35) major loop, which is set, is connected to output there are three static contact and a moving contact, moving contact, as the connection of L line
Onto the power supply phase terminal terminal of load, with N phase line be jointly single-phase load power supply, three static contacts respectively with distribution line
The connection of A, B, C threephase cable, moving contact can need switch between three static contacts according to phase modulation, realize single-phase load
L line switched between A, B, C threephase cable, the source three-phase imbalance regulating device (34) is by switch motion mould
Block IGBT (37), reactor and capacitor group (38), one-chip computer module (9), LoRa node module (4) are constituted, switch motion mould
Block IGBT (37) is parallel on the threephase cable of source side power grid by conducting wire and breaker, switch motion module I GBT's (37)
Output is connected to reactor and capacitor group (38), and one-chip computer module (9) is connected by conducting wire and switch motion module I GBT (37)
It connecing, multiple groups is provided in reactor and capacitor group (38) group and compensate grade, switching control is realized by one-chip computer module (9),
One-chip computer module (9) connects LoRa node module (4) by bus, and is connected to LoRa network.
A kind of multi-data fusion three-phase imbalance adjustment control method for above-mentioned intelligent monitor system, by detection
Three-phase current signal and the temperature signal of threephase cable carry out fusion as three-phase imbalance and adjust control signal, including it is following
Implementation steps:
Step 1: signal detection module detects load-side three-phase current signal I respectivelya, Ib, Ic；
Step 2: cable monitoring running state module detects the temperature signal T of threephase cable respectivelya, Tb, Tc；
Step 3: setting two-stage threephase load current unbalance factor threshold value δil, δih, wherein δilFor under current unbalance factor
Limit threshold value, δihFor current unbalance factor upper limit threshold, threephase cable temperature degree of unbalancedness threshold value δtl, δth, wherein δtlFor three-phase
The temperature degree of unbalancedness lower threshold of cable, δthFor the temperature degree of unbalancedness upper limit threshold of threephase cable；
Step 4: calculating separately threephase load current unbalance factor δiWith threephase load temperature degree of unbalancedness δt, in which:
Step 5: if δi≤δil, and δt≤δtl, 10 are thened follow the steps, if δi≥δihAnd/or δt≥δthThen execute step
Rapid 6, if δil< δi< δih, and δt≤δtl7 are thened follow the steps, if δtl< δt< δth, and δi≤δil8 are thened follow the steps, such as
Fruit δil< δi< δih, and δtl< δi< δthThen follow the steps 9；
Step 6: δi≥δihAnd/or δt≥δth, then called by remote monitoring center computer and telemedicine education end excellent
The optimisation strategy for changing commutation determines that commutation instructs and sends commutation instruction to different load-side regulator control systems, controls moving contact
Its phase sequence of powering of movement switching, executes step 1 after having implemented load-side regulator control system commutation operation again；
Step 7: δil< δi< δih, and δt≤δtl, with δiFor adjustment foundation, the power factor of the source side is calculated, and
According to power factor, judgement is inductive reactive power or capacitive reactive power, then carries out capacitive current compensation if it is inductive reactive power, if
The reactive power characteristic is that capacitive reactive power then carries out inductance current compensation, executes step 1 again after having implemented adjustment；
Step 8: δtl< δt< δth, and δi≤δil, with δtFor adjustment foundation, the power factor of the source side is calculated, and
According to power factor, judgement is inductive reactive power or capacitive reactive power, then carries out capacitive current compensation if it is inductive reactive power, if
The reactive power characteristic is that capacitive reactive power then carries out inductance current compensation, executes step 1 again after having implemented adjustment；
Step 9: δil< δi< δih, and δtl< δt< δth, merge δiAnd δtFor δit, then
With δitFor adjust foundation, calculate the power factor of the source side, and according to power factor, judgement be inductive reactive power also
It is capacitive reactive power, then carries out capacitive current compensation if it is inductive reactive power, if the reactive power characteristic is capacitive reactive power
Inductance current compensation is carried out, executes step 1 again after having implemented adjustment；
Step 10: being sampled next time according to the sampling period of setting, execute step 1.
Beneficial effects of the present invention: present invention design realizes a kind of electric power channel ambient intelligence prison based on LoRa technology
Control system, including environment monitoring module, cable monitoring running state module, cable intermediate joint monitoring running state module,
LoRa gateway/base station, LoRa node module, remote terminal unit RTU, three-phase imbalance regulating device, single-chip microcontroller, intelligence execute
Mechanism, remote monitoring center computer, telemedicine education end and each equipment and module power supply module.Pass through this system
Operation can include to electric power channel environmental information and keypoint part cable and cable intermediate joint running state information into
Row is continuous, dynamic, acquires in real time, and collected information is sent respectively to the monitoring center of intelligent Actuator and distal end
Or mobile monitor end.Intelligent Actuator can be started automatically according to preset service condition, be stopped or other execution
Movement.Intelligent Actuator also can receive remote monitoring center or executing instruction for mobile monitor end is executed accordingly
Movement.By monitoring the operating status of the live transmission line of electricity of system feedback, operation ring of the intelligent Actuator to transmission line of electricity
The automatic adjustment in border, or be adjusted according to remote control commands, so as to improve the operating status of transmission line of electricity in electric power channel
Or environment, it avoids that power failure occurs, to improve the reliability of transmission line of electricity, ensures power supply quality.And it solves existing
Networking in electric power channel environment and the problems such as information exchange is difficult and O&M cost is high.Meanwhile the present invention is based on above-mentioned intelligence
Energy monitoring system also proposed a kind of three-phase imbalance adjustment control method of multi-data fusion, can more there is effective improvement electricity
The running environment of transmission line of electricity in power channel conditions.
Detailed description of the invention
The connection figure of power channel ambient intelligence monitoring system of the Fig. 1 based on LoRa technology
Fig. 2 environment monitoring module and LoRa node module connection figure
Fig. 3 cable intermediate joint monitoring running state module and LoRa node module connection figure
Fig. 4 cable monitoring running state module and LoRa node module connection figure
The surface-mount type optical fiber and cabling diagram of Fig. 5 cable monitoring running state module
Fig. 6 intelligent control ventilation device connection figure
Fig. 7 EML3047 node module hardware frame
Fig. 8 source side loads balance control connection figure
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
According to embodiment of the present invention, a kind of power channel ring based on LoRa technology of the invention in conjunction with Fig. 1
Border intelligent monitor system, including environment monitoring module (1), cable monitoring running state module (2), cable intermediate joint run shape
State monitoring modular (3), LoRa gateway/base station (4), LoRa node module (5), Internet6, remote terminal unit RTU (7),
It is three-phase imbalance regulating device (8), single-chip microcontroller (9), intelligent Actuator (10), remote monitoring center computer (11), long-range
The power supply module (13) of mobile monitor end (12) and each equipment and module.
According to embodiment of the present invention, in conjunction with the sensor of the environment monitoring module of the present invention of Fig. 2,3,6 (1)
It (14) is Temperature Humidity Sensor (17) that intelligent Actuator (10) is Intelligent ventilating apparatus (19) and/or intelligent cooling dehumidifying dress
It sets (20), Temperature Humidity Sensor is set to inside the electric power channel for monitoring temperature and humidity.Wherein, Intelligent ventilating apparatus
(19) and/or between intelligent cooling dehumidification device (20) and A.C. contactor it is connect using 3 phase contacts.Work as Intelligent ventilating apparatus
(19) and/or intelligent cooling dehumidification device (20) is in running order, and 3 phase contacts are in attracting state；It disconnects in controller
Relay normally-closed contact, circuit is in off state at this time, and contactor disconnects, and three phase mains power supply stops.In controller
Single-chip microcontroller (9) use atmel corp AT89C52 single-chip microcontroller (25).Temperature Humidity Sensor (17) is Temperature Humidity Sensor
SHT10, for measuring the temperature and humidity in electric power channel.SHT10 sensor is single-chip digital temperature and humidity integrated sensor.The sensing
Device is made of 1 capacitive polymer wetting components and 1 energy gap type temperature measurement element, and with 1 14 A/D converter and 1
A 2-wire digital interface seamless combination in single-chip.
It according to embodiment of the present invention, is combustible gas sensor (21) in conjunction with Fig. 2 inventive sensor (14)
And/or toxic gas sensor (22), the intelligent Actuator (10) are Intelligent ventilating apparatus (19), combustible gas sensor
(21) and/or toxic gas sensor (22) is set to inside the electric power channel for monitoring fuel gas and/or having poison gas
The gas concentration of body.
According to embodiment of the present invention, it is in conjunction with the single-chip microcontroller of Fig. 3 cable monitoring running state module of the present invention
AT89C52 single-chip microcontroller (25), temperature sensor (16) are DS1820 (24), and single-chip microcontroller is AT89C52 single-chip microcontroller (25) and LoRa
Node module (5) is connected by RS485 bus, and cable monitoring running state uses point type temperature monitoring, several temperature sensing
Device is according to the requirement scattered resettlement of monitoring in monitoring position important on cable.
According to embodiment of the present invention, in conjunction with Fig. 4, the single-chip microcontroller of 5 cable monitoring running state modules of the present invention
For AT89C52 single-chip microcontroller (25), temperature sensor (15) is distributed optical fiber temperature sensor, i.e. GSDTS-04-10 temperature passes
Sensor (26), AT89C52 single-chip microcontroller (25) are connected with LoRa node module (5) by RS485 bus, cable monitoring running state
Optical fiber type temperature monitoring, three distributed optical fiber temperature sensors are respectively disposed on the insulating layer table of cable according to 120 ° of angles
Face.
It according to embodiment of the present invention, is EML3047 (29), EML3047 in conjunction with Fig. 7 LoRa node module (5)
It (29) include STM32L071 (30) MCU and SX1278 (31) RF IC, wherein STM32L071 (30) is responsible for RTOS, LoRa agreement
Stack, cloud docking agreement, Encryption Algorithm and the operation of AT instruction, SX1278 (31) carry out LoRa radio-frequency modulations demodulation process.
EML3047 module scheme is integrated with the circuits such as peripheral crystal oscillator, radio-frequency match.
According to embodiment of the present invention, in conjunction with Fig. 8 three-phase imbalance regulating device (8) include load-side three-phase not
Balance regulator (33) and/or source side three-phase imbalance regulating device (34), the load-side three-phase imbalance are adjusted
Device (33) includes commutation module (35), one-chip computer module (9), signal detection module (36) and LoRa node module (4), signal
Detection module (36) input is connected to three-phase wire, and signal detection module (36) output is connected with one-chip computer module (9), single-chip microcontroller
Module (9) connects LoRa node module (4) by bus, and is connected to LoRa network, the output and commutation of one-chip computer module (9)
The control loop of module (35) is connected, the input side of commutation module (35) major loop and A, B, C threephase cable of distribution line
Connection, the input side of described commutation module (35) major loop is set to be connected to there are three static contact and a moving contact, moving contact
Output, is connected on the power supply phase terminal terminal of load as L line, is jointly single-phase load power supply, three stationary contacts with N phase line
Head is connect with A, B, C threephase cable of distribution line respectively, and moving contact can need to carry out between three static contacts according to phase modulation
Switching, realizes that the L line of single-phase load switches between A, B, C threephase cable, and the source three-phase imbalance adjusts dress
(34) are set by switch motion module I GBT (37), reactor and capacitor group (38), one-chip computer module (9), LoRa node module
(4) it constitutes, switch motion module I GBT (37) is parallel on the threephase cable of source side power grid by conducting wire and breaker, is switched
The output of action module IGBT (37) is connected to reactor and capacitor group (38), and one-chip computer module (9) passes through conducting wire and switch
In action module IGBT (37) connection, reactor and capacitor group (38) group be provided with multiple groups compensate grade, switching control by
One-chip computer module (9) realizes that one-chip computer module (9) connects LoRa node module (4) by bus, and is connected to LoRa network.
According to embodiment of the present invention, a kind of multi-data fusion three-phase for above-mentioned intelligent monitor system is uneven
Weigh adjustment control method, carries out fusion by the temperature signal of three-phase current signal and threephase cable to detection and is used as three-phase not
Balance adjustment controls signal, including following implementation steps:
Step 1: signal detection module detects load-side three-phase current signal I respectivelya=5, Ib=10, Ic=15；
Step 2: cable monitoring running state module detects the temperature signal T of threephase cable respectivelya=55 DEG C, Tb=45 DEG C,
Tc=74 DEG C；
Step 3: setting two-stage threephase load current unbalance factor threshold value δil=20%, δih=60%, threephase cable temperature
Degree of unbalancedness threshold value δtl=20%, δth=60%,；
Step 4: calculating separately threephase load current unbalance factor δiWith threephase load temperature degree of unbalancedness δt, in which:
Step 5: acquiring δi=50%, δt=28%, δil< δi< δih, and δtl< δt< δthThen follow the steps 9；
Step 9: δil< δi< δih, and δtl< δi< δth, merge δiAnd δtFor δit, then
With δit=42% is adjustment according to load balance compensation is carried out, and step 1 is executed after adjustment；
The above is present pre-ferred embodiments, for the ordinary skill in the art, according to the present invention
Introduction, in the case where not departing from the principle of the present invention and spirit, changes, modifications, replacement and change that embodiment is carried out
Shape is still fallen within protection scope of the present invention.
Claims (10)
1. a kind of electric power channel ambient intelligence monitoring system based on LoRa technology, including the operation of environment monitoring module (1), cable
State monitoring module (2), cable intermediate joint monitoring running state module (3), LoRa gateway/base station (4), LoRa node module
(5), Internet network (6), remote terminal unit RTU (7), three-phase imbalance regulating device (8), single-chip microcontroller (9), intelligence are held
Row mechanism (10), remote monitoring center computer (11), telemedicine education end (12) and each equipment and module power supply mould
Block (13), the environment monitoring module (2) include the sensor (14) connecting respectively with the single-chip microcontroller (9), the sensor
(14) it is set to inside the electric power channel for monitoring environmental parameter, the single-chip microcontroller (9) connects LoRa node by bus
Module (5) passes through LoRa gateway/base station when single-chip microcontroller (9) judges that environmental parameter reaches preset threshold in the electric power channel
(4) and LoRa node module (5) composition LoRa network and Internet network (6) respectively to intelligent Actuator (10), far
Range monitoring central computer (11) and telemedicine education end (12) send observing and controlling information, the cable monitoring running state module
It (2) include the temperature sensor (15) being connect respectively with the single-chip microcontroller (9), the temperature sensor (15) is set to cable meter
Face for monitoring cable surface temperature, the cable intermediate joint monitoring running state module (3) include respectively with the monolithic
The temperature sensor (16) of the temperature sensor (16) of machine (9) connection, single-chip microcontroller (9) connection is placed in cable intermediate joint
For monitoring the temperature of cable intermediate joint, single-chip microcontroller (9) judges the cable surface or/and the cable intermediate joint
When temperature reaches preset temperature threshold, dress is adjusted to remote terminal unit RTU (7), three-phase imbalance respectively by LoRa network
It sets (8), intelligent Actuator (10), remote monitoring center computer (11) and telemedicine education end (12) and sends observing and controlling letter
Breath.
2. a kind of electric power channel ambient intelligence monitoring system based on LoRa technology according to claim 1, feature exist
In the sensor (14) be Temperature Humidity Sensor (17), the intelligent Actuator (10) be Intelligent ventilating apparatus (19) and/
Or intelligent cooling dehumidification device (20), Temperature Humidity Sensor (17) are set to inside the electric power channel for monitoring temperature and wet
Degree is held by LoRa network to intelligence when single-chip microcontroller (9) judges that temperature and humidity reaches preset first threshold value in the electric power channel
Row mechanism (10) sends observing and controlling information, starts Intelligent ventilating apparatus (19) and/or intelligent cooling dehumidification device (20) and to electric power
Channel environment is improved, to electric power channel in temperature and humidity be lower than first threshold when stop working, otherwise, single-chip microcontroller 9 is judged
When temperature and humidity reaches default second threshold in electric power channel, alarm signal is sent out by LoRa network and Internet network (6)
It send to remote monitoring center computer (11) and/or telemedicine education end (12).
3. a kind of electric power channel ambient intelligence monitoring system based on LoRa technology according to claim 1, feature exist
It is combustible gas sensor (21) and/or toxic gas sensor (22), the intelligent Actuator in the sensor (14)
It (10) is Intelligent ventilating apparatus (19), combustible gas sensor (21) and/or toxic gas sensor (22) are set to the electricity
For monitoring the gas concentration of fuel gas and/or toxic gas inside power channel, single-chip microcontroller (9) judges the electric power channel
When interior gas concentration reaches preset first threshold value, observing and controlling information, starting are sent to Intelligent ventilating apparatus (19) by LoRa network
Intelligent ventilating apparatus (19) simultaneously improves power channel environment, to electric power channel in gas concentration be lower than first threshold when stop
It only works, otherwise, when single-chip microcontroller (9) judges that gas concentration reaches default second threshold in electric power channel, passes through LoRa network
And alarm signal is sent to remote monitoring center computer (11) and/or telemedicine education end by Internet network (6)
(12)。
4. a kind of electric power channel ambient intelligence monitoring system based on LoRa technology according to claim 1, feature exist
It is DS1820 temperature sensor (24) in the temperature sensor (16), the single-chip microcontroller (9) of connection is AT89C52 single-chip microcontroller
(25), AT89C52 single-chip microcontroller (25) is connected with LoRa node module (4) by RS485 bus.
5. a kind of electric power channel ambient intelligence monitoring system based on LoRa technology according to claim 1, feature exist
It is GSDTS-04-10 temperature sensor (26) in the temperature sensor (15).
6. a kind of electric power channel ambient intelligence monitoring system based on LoRa technology according to claim 1, feature exist
It is EML3047 (29) in the LoRa node module (4), EML3047 (29) includes STM32L071 (30) and SX1278 (31).
7. a kind of electric power channel ambient intelligence monitoring system based on LoRa technology according to claim 1, feature exist
In the remote monitoring center computer (11) and telemedicine education end (12) include man machine operation interface intelligence execution machine
The virtual control panel (32) of structure, for remotely controlling intelligent Actuator (10).
8. a kind of electric power channel ambient intelligence monitoring system based on LoRa technology according to claim 1, feature exist
In the three-phase imbalance regulating device (8) include load-side three-phase imbalance regulating device (33) and/or source side three-phase
Uneven regulating device (34), the load-side three-phase imbalance regulating device (33) include commutation module (35), single-chip microcontroller
Module (9), signal detection module (36) and LoRa node module (4), signal detection module (36) input are connected to three-phase wire,
Signal detection module (36) output is connected with one-chip computer module (9), and one-chip computer module (9) connects LoRa node module by bus
(4), and it is connected to LoRa network, the output of one-chip computer module (9) is connected with the control loop of commutation module (35), commutation mould
The input side of block (35) major loop and A, B, C threephase cable of distribution line connect, described commutation module (35) major loop
Input side, which is set, is connected to output there are three static contact and a moving contact, moving contact, and the power supply phase line of load is connected to as L line
On connecting terminal, with N phase line be jointly single-phase load power supply, three static contacts respectively with A, B, C threephase cable of distribution line
Connection, moving contact can need to switch between three static contacts according to phase modulation, realize the L line of single-phase load in A, B, C tri-
It is switched between phase cable, the source three-phase imbalance regulating device (34) is by switch motion module I GBT (37), electricity
Anti- device and capacitor group (38), one-chip computer module (9), LoRa node module (4) are constituted, and switch motion module I GBT (37) passes through
Conducting wire and breaker are parallel on the threephase cable of source side power grid, and the output of switch motion module I GBT (37) is connected to reactance
Device and capacitor group (38), one-chip computer module (9) are connect by conducting wire with switch motion module I GBT (37), reactor and capacitor
It is provided with multiple groups in device group (38) group and compensates grade, switching control is realized that one-chip computer module (9) is logical by one-chip computer module (9)
Bus connection LoRa node module (4) is crossed, and is connected to LoRa network.
9. a kind of electric power channel ambient intelligence monitoring based on LoRa technology as claimed in any of claims 2 to 3
System, it is characterised in that the Intelligent ventilating apparatus (19) includes paddle motor (27), A.C. contactor (28).
10. a kind of multi-data fusion three-phase imbalance adjustment control method for above-mentioned intelligent monitor system, by detection
Three-phase current signal and the temperature signal of threephase cable carry out fusion as three-phase imbalance and adjust control signal, including it is following
Implementation steps:
Step 1: signal detection module detects load-side three-phase current signal I respectivelya, Ib, Ic；
Step 2: cable monitoring running state module detects the temperature signal T of threephase cable respectivelya, Tb, Tc；
Step 3: setting two-stage threephase load current unbalance factor threshold value δil, δih, wherein δilFor current unbalance factor lower limit threshold
Value, δihFor current unbalance factor upper limit threshold, threephase cable temperature degree of unbalancedness threshold value δtl, δth, wherein δtlFor threephase cable
Temperature degree of unbalancedness lower threshold, δthFor the temperature degree of unbalancedness upper limit threshold of threephase cable；
Step 4: calculating separately threephase load current unbalance factor δiWith threephase load temperature degree of unbalancedness δt, in which:
Step 5: if δi≤δil, and δt≤δtl, 10 are thened follow the steps, if δi≥δihAnd/or δt≥δthThen follow the steps 6,
If δil< δi< δih, and δt≤δtl7 are thened follow the steps, if δtl< δt< δth, and δi≤δil8 are thened follow the steps, if δil
< δi< δih, and δtl< δi< δthThen follow the steps 9；
Step 6: δi≥δihAnd/or δt≥δth, then optimization is called to change by remote monitoring center computer and telemedicine education end
The optimisation strategy of phase determines that commutation instructs and sends commutation instruction to different load-side regulator control systems, controls moving contact movement
Switch its phase sequence of powering, executes step 1 again after having implemented load-side regulator control system commutation operation；
Step 7: δil< δi< δih, and δt≤δtl, with δiTo adjust foundation, the power factor of the source side is calculated, and according to
Power factor, judgement are inductive reactive power or capacitive reactive power, capacitive current compensation are then carried out if it is inductive reactive power, if described
Reactive power characteristic is that capacitive reactive power then carries out inductance current compensation, executes step 1 again after having implemented adjustment；
Step 8: δtl< δt< δth, and δi≤δil, with δtTo adjust foundation, the power factor of the source side is calculated, and according to
Power factor, judgement are inductive reactive power or capacitive reactive power, capacitive current compensation are then carried out if it is inductive reactive power, if described
Reactive power characteristic is that capacitive reactive power then carries out inductance current compensation, executes step 1 again after having implemented adjustment；
Step 9: δil< δi< δih, and δtl< δt< δth, merge δiAnd δtFor δit, then
With δitFor adjust foundation, calculate the power factor of the source side, and according to power factor, judgement be inductive reactive power or
Capacitive reactive power then carries out capacitive current compensation if it is inductive reactive power, if the reactive power characteristic be capacitive reactive power if into
The compensation of row inductance current, executes step 1 after having implemented adjustment again；
Step 10: being sampled next time according to the sampling period of setting, execute step 1.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110658875A (en) * | 2019-11-08 | 2020-01-07 | 中国三峡建设管理有限公司 | Dam corridor warm and humid air on-line monitoring and intelligent control system |
| CN111132094A (en) * | 2019-11-22 | 2020-05-08 | 国网江苏省电力有限公司电力科学研究院 | Communication network and communication method suitable for power transmission line sensing system |
| CN112595371A (en) * | 2021-03-02 | 2021-04-02 | 成都工百利自动化设备有限公司 | Sensing system for working state of handcart type high-voltage circuit breaker contact |
| CN113110257A (en) * | 2021-05-21 | 2021-07-13 | 武汉伏佳安达电气技术有限公司 | Intelligent monitoring system and method for electric power tunnel |
| CN113406539A (en) * | 2021-05-06 | 2021-09-17 | 广州番禺电缆集团有限公司 | Operation monitoring method and device for intelligent cable connector |
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2019
- 2019-08-17 CN CN201910782163.2A patent/CN110412926A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110658875A (en) * | 2019-11-08 | 2020-01-07 | 中国三峡建设管理有限公司 | Dam corridor warm and humid air on-line monitoring and intelligent control system |
| CN111132094A (en) * | 2019-11-22 | 2020-05-08 | 国网江苏省电力有限公司电力科学研究院 | Communication network and communication method suitable for power transmission line sensing system |
| CN112595371A (en) * | 2021-03-02 | 2021-04-02 | 成都工百利自动化设备有限公司 | Sensing system for working state of handcart type high-voltage circuit breaker contact |
| CN113406539A (en) * | 2021-05-06 | 2021-09-17 | 广州番禺电缆集团有限公司 | Operation monitoring method and device for intelligent cable connector |
| CN113110257A (en) * | 2021-05-21 | 2021-07-13 | 武汉伏佳安达电气技术有限公司 | Intelligent monitoring system and method for electric power tunnel |
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