CN109546754A - A kind of region small hydropower station active reactive control system based on Internet of Things - Google Patents
A kind of region small hydropower station active reactive control system based on Internet of Things Download PDFInfo
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- CN109546754A CN109546754A CN201910063898.XA CN201910063898A CN109546754A CN 109546754 A CN109546754 A CN 109546754A CN 201910063898 A CN201910063898 A CN 201910063898A CN 109546754 A CN109546754 A CN 109546754A
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- H02J13/0075—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
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Abstract
The region small hydropower station active reactive control system based on Internet of Things that the invention discloses a kind of, it includes small power station's active reactive control device based on Internet of Things chip wireless communication module, is connect with the mobile private network base station radio of Internet of Things；The mobile private network base station of Internet of Things is connect with region small hydropower station active reactive control system main website；The region small hydropower station active reactive control system main website includes acquisition interchanger, and the mobile private network base station of Internet of Things after public network safety protection equipment with acquisition interchanger by connecting；Acquisition interchanger is connect with acquisition server, calculation server, application server, database server and management server respectively；Solves the communication mode that prior art small power station active reactive control device uses 4G or GPRS wireless public network transmitted data on network, that there are mobile model entity SIM cards is stolen, supervisory efficiency is low, small product size is big, the communication reliability of wireless public network transmitted data on network, the problems such as stability is poor.
Description
Technical field
The invention belongs to active distribution network automatic control technology field more particularly to a kind of region little Shui based on Internet of Things
Power station active reactive control system.
Background technique
Small power station as a kind of cleanliness without any pollution, green energy resource renewable and that there is good ecology and social benefit,
Importance becomes increasingly conspicuous.The development of small power station can drive local socio-economic development, alleviate power distribution network electricity consumption not foot phenomenon,
Improve production and living conditions, while energy-saving and emission-reduction can also be promoted, promotes the construction of green network.China's development of small scale hydropower station has reached
Considerable scale, especially after the requirement that country proposes energy-saving and emission-reduction, green scientific development, small power station has obtained more rapid hair
Exhibition.
But the access power grid of a large amount of small power stations makes the trend of route in power grid no longer be original unidirectional flowing,
Structure and operation to whole region network system also have a huge impact.With the access of small power station, power grid in power distribution network
As each season rainfall is different, small power station's generated energy is different and fluctuates, this will affect the electric energy of user side for active and reactive distribution
Quality also brings huge challenge to major network voltage, frequency adjusting.
The voltage problem major embodiment of small power station's power distribution network are as follows: the small water at dry season and higher load, in power distribution network
Electric generated energy cannot be supplied to local load completely, therefore major network needs to convey a part of electric power to power distribution network, and electric energy is from major network
It transmits and consumes to power distribution network, power distribution network is gradually decreased along line voltage, this may make line end brownout；Wet season and use
When electric load is lower, small power station's generated energy is higher, some electric energy is transported to major network from small power station, is being rich in small power station
In power distribution network, it is possible to the voltage along power distribution network can be made to increase, or even cause terminal voltage out-of-limit.Meanwhile small power station's unit
Network re-active power caused by the unpredictability of power output, uncontrollability fluctuates, and asks so as to cause the fluctuation of mains frequency
Topic.Therefore, carrying out the coordinated control of active reactive to the small power station in region is to solve the problems, such as that small power station is active and reactive in region
The powerful measure highlighted.
The principal element for the coordinated control realization that active reactive is carried out to the small power station in region is influenced precisely due to majority
Distributed water current potential is difficult to cover in remote mountain area, the power communication means of mainstream, seriously affects information collection and control refers to
Order issues, at present in addition to part small hydropower station can realize communication function by dispatch data net and dispatching terminal, mostly still 4G or
The communication mode of GPRS wireless public network transmitted data on network, there are mobile model entity SIM cards to be stolen, supervisory efficiency is low, product body
Product is big, wireless public network transmitted data on network communication reliability, the problems such as stability is poor.And due to the most cloth of small hydropower station
Power grid weakness zone or remote districts are placed in, running environment condition is poor, can not use 4G or GPRS wireless public network network transmission
The communication mode of data, meanwhile, in region small hydropower station and small power station's active reactive control device lack unified pipe
Reason, data supporting, analysis platform, there are power grids to be unable to monitor the information such as its operating status and load, also can not be to small power station
The problems such as carrying out the control of active reactive rapid coordination.
Summary of the invention:
The technical problem to be solved by the present invention is providing a kind of region small hydropower station active reactive control system based on Internet of Things
System, to solve the communication that prior art small power station active reactive control device uses 4G or GPRS wireless public network transmitted data on network
Mode, there are mobile model entity SIM cards to be stolen, supervisory efficiency is low, small product size is big, the communication of wireless public network transmitted data on network
The problems such as reliability, poor stability；With in region small hydropower station and small power station's active reactive control device lack system
One management, data supporting, analysis platform, there are power grids to be unable to monitor the information such as its operating status and load, also can not be right
Small power station carries out the problems such as active reactive rapid coordination control.
Technical solution of the present invention:
A kind of region small hydropower station active reactive control system based on Internet of Things, it includes being wirelessly communicated based on Internet of Things chip
Small power station's active reactive control device of module, small power station's active reactive based on Internet of Things chip wireless communication module control dress
It sets and is connect with the mobile private network base station radio of Internet of Things；The mobile private network base station of Internet of Things and the control of region small hydropower station active reactive are
The connection of system main website；The region small hydropower station active reactive control system main website includes acquisition interchanger, the mobile private network of Internet of Things
Base station is connect after passing through public network safety protection equipment with acquisition interchanger；Interchanger is acquired to take with acquisition server, calculating respectively
Business device, application server, database server are connected with management server.
Small power station's active reactive control device based on Internet of Things chip wireless communication module, it includes: small power station
Active reactive control device, switching value, which is opened, to be outputed module and Analog input mModule respectively into module, switching value and has with small power station
Control device conducting wire connection that function is idle；Small power station's active reactive control device with based on built-in e-SIM card Internet of Things chip it is wireless
The communication unit conducting wire of communication module connects.
The communication unit based on built-in e-SIM card Internet of Things chip wireless communication module includes that communication device core is micro-
Controller, communication device Core Microcontroller are connect with user's operation panel, storage unit and data acquisition module conducting wire respectively；
Communication device Core Microcontroller is connect with the wireless communication module conducting wire of built-in e-SIM card Internet of Things chip.
Communication device Core Microcontroller is connect with GPS wireless module conducting wire.
It further includes main electricity module and standby power supply module, the main electricity module and standby power supply module
It is connect respectively with communication device power detecting and switching module conducting wire；Communication device power detecting and switching module and communication device
The connection of Core Microcontroller conducting wire.
Data acquisition module is connect with external communication interface module conducting wire.
GPS wireless module is configured with hardware clock synchronization interface.
The wireless communication module of built-in e-SIM card Internet of Things chip and intelligent low-pressure comprehensive distribution box management system main website without
Line connection.
The invention has the advantages that:
The present invention is by the mobile private network of small power station's active reactive control device, Internet of Things based on Internet of Things chip wireless communication module
Base station, active reactive control system main website, region small power station are constituted.Pass through the small water based on Internet of Things chip wireless communication module
Electric active reactive control device, it is strong, anti-interference using the stability based on built-in e-SIM card Internet of Things chip wireless communication module
Property it is strong, small in size, low energy consumption, accurate positioning, can real-time monitoring, e-SIM card Internet of Things chip inner embedded integrated design etc. it is excellent
Gesture feature can be realized with Internet of Things mobile network base station by the mobile private network wireless communication of Internet of Things using Internet of Things private network
The acquisition and monitoring of small power station's active reactive control device real time data, while small power station's active reactive control system may be implemented
The active and reactive control instruction that main website issues small power station's active reactive control device, small power station's unit, to solve using 4G or
The communication mode of GPRS wireless public network transmitted data on network, there are the communication reliabilities of wireless public network transmitted data on network, stabilization
The problems such as property is poor.And in some power grid weakness zones of small hydropower station online, it is wireless that Internet of Things chip is based on by one kind
The Internet of Things chip wireless communication module of small power station's active reactive control device of communication module, it is active that establishment is exclusively used in small power station
Strong flexibility, high stability, the Internet of Things private wire network of high reliability of idle control device, it is ensured that Internet of Things can be utilized
Private network realizes that the acquisition, monitoring and active reactive of small hydropower station real time data automatically control, and solves the small hydropower station in region
And small power station's active reactive control device lacks unified management, data supporting, analysis platform, there are power grids to be unable to monitor it
The information such as operating status and load also can not carry out the problems such as active reactive rapid coordination controls to small power station；It solves existing
Technology small power station active reactive control device uses the communication mode of 4G or GPRS wireless public network transmitted data on network, and there are movements
Type entity SIM card is stolen, supervisory efficiency is low, small product size is big, the communication reliability of wireless public network transmitted data on network, stability
The problems such as poor；With in region small hydropower station and small power station's active reactive control device lack unified management, data
Support, analysis platform, there are power grids to be unable to monitor the information such as its operating status and load, can not also carry out to small power station active
The problems such as idle rapid coordination controls.
Figure of description:
Fig. 1 is schematic structural view of the invention；
Fig. 2 is small hydropower station active reactive controling device structure diagram；
Fig. 3 is that the present invention is based on the communication unit structural schematic diagrams of built-in e-SIM card Internet of Things chip wireless communication module.
Specific embodiment:
The present invention is by the mobile private network of small power station's active reactive control device, Internet of Things based on Internet of Things chip wireless communication module
Base station, region small hydropower station active reactive control system main website composition.
Active reactive control system main website, region small power station is serviced by public network safety protection equipment, acquisition interchanger, acquisition
Device, calculation server, application server, database server, management server are constituted.
It is connected based on small power station's active reactive control device of Internet of Things chip wireless communication module according to its affiliated area
The mobile private network base station of Internet of Things divide, the mobile private network base station of Internet of Things have it is N number of, wherein the mobile private network base station 1 of the 1st Internet of Things
It include the total active nothing of i small hydropower station of small hydropower station active reactive control device 1 ~ small hydropower station active reactive control device i
Function control device, the mobile private network base station N of n-th Internet of Things includes that small hydropower station active reactive 1 ~ small hydropower station of control device has
Function the is idle total j small hydropower station active reactive control device of control device j.
The mobile private network base of small power station's active reactive control device and Internet of Things based on Internet of Things chip wireless communication module
It is realized between standing using the mobile private network communication of Internet of Things, the mobile private network base station of Internet of Things and the active nothing of region small power station
It installs public network safety protection equipment between acquisition interchanger in function control system main website additional, and is connected using the connection of wired optical cable,
For by the collected analog quantity of small hydropower station active reactive control device (including small power station generator terminal voltage Ua, Ub,
Uc, small power station generator generator terminal electric current Ia, Ib, Ic, small power station generator excitation voltage Uf, small power station's exciter current of generator
If, small hydropower station high side bus voltage Ux, small hydropower station high-voltage side bus frequency F) and switching value open into signal (including unit
Governor fault signal allows AGC to control signal, electrical hazard alarm signal, water dispenser accident alarm signal, have halt command announcement
Alert signal) etc. real time datas and information private network base station is moved by Internet of Things and is transferred to region small power station active reactive control system
Main website.
Acquisition server in active reactive control system main website, region small power station is connected with acquisition interchanger, for realizing
Acquisition and data check, processing to small hydropower station active reactive control device upload information；
Calculation server in active reactive control system main website, region small power station is connected with acquisition interchanger, for realizing power station
The specific calculating on the backstages such as idle quick control, the active quick control in power station services, and for application service invocation；
Application server in active reactive control system main website, region small power station is connected with acquisition interchanger, for realizing system
All application functions such as idle quick control, active quick control；
Database server in active reactive control system main website, region small power station is connected with acquisition interchanger, for realizing right
Small hydropower station active reactive control device acquires information and data analysis, the data storage of decision information.
Management server in active reactive control system main website, region small power station is connected with acquisition interchanger, for controlling
Server work runs, handles hardware, operating system and application software in active reactive control system main website, region small power station
Upgrading and system resource management, performance maintenance and configuration monitoring.
Small power station's active reactive control device based on Internet of Things chip wireless communication module includes small power station's active reactive
Control device, the communication unit based on built-in e-SIM card Internet of Things chip wireless communication module, switching value are opened into module and auxiliary
Contact, switching value output module and auxiliary contact, Analog input mModule composition；Small power station's active reactive control device is PLC
Controller.
Small power station's active reactive control device is opened with switching value to be connected into module and auxiliary contact, opens for acquiring switching value
Enter signal, including machine unit speed regulating device fault-signal, permission AGC control signal, electrical hazard alarm signal, water dispenser accident and alert letter
Number, have halt command alarm signal.
Small power station's active reactive control device is connected with Analog input mModule, for acquiring small power station's generator generator terminal electricity
Ua, Ub, Uc are pressed, small power station generator generator terminal electric current Ia, Ib, Ic, small power station generator excitation voltage Uf, small power station's generator encourages
Magnetoelectricity stream If, small hydropower station high side bus voltage Ux, small hydropower station high-voltage side bus frequency F.
Small power station's active reactive control device outputs module with switching value and auxiliary contact is connected, for controlling small power station's machine
Group speedup is slowed down, and small power station's unit increases excitation, excitation reduction, and the booting of small power station's unit enables, shuts down order.
Small power station's active reactive control device and the communication unit based on built-in e-SIM card Internet of Things chip wireless communication module
RS232 or RS485 data line can be used between member to be connected.For by collected analog quantity (including small power station's generator generator terminal
Voltage Ua, Ub, Uc, small power station generator generator terminal electric current Ia, Ib, Ic, small power station generator excitation voltage Uf, small power station's generator
Exciting current If, small hydropower station high side bus voltage Ux, small hydropower station high-voltage side bus frequency F) and switching value open into signal
(including machine unit speed regulating device fault-signal, permission AGC control signal, electrical hazard alarm signal, water dispenser accident alarm signal, have
Halt command alarm signal) be sent to by the communication unit based on built-in e-SIM card Internet of Things chip wireless communication module it is small
Water power active reactive control system main website is judged whether to issue control instruction to small power station's unit.Meanwhile it being also used for receiving
The instruction of active reactive control system main website, small power station, instruction include control small power station's unit speedup, slow down, small power station's unit
Increase excitation, excitation reduction, the booting of small power station's unit enables, shuts down order, controlling small power station's unit.
Communication unit based on built-in e-SIM card Internet of Things chip wireless communication module mainly includes GPS wireless module, outside
Portion's communication interface modules, main collection, diversity antenna module, data acquisition module, communication device Core Microcontroller, communication device electricity
Source detection and switching module, main power supply module, standby power supply module, storage unit, the nothing of built-in e-SIM card Internet of Things chip
Line communication module, user's operation panel.
GPS wireless module is connected with communication device Core Microcontroller, for receiving small power station's active reactive control system
The GPS system clock synchronization information of main website, realizes unified network clock synchronization.Meanwhile the accuracy to guarantee clock, GPS wireless module
Equipped with unified hardware clock synchronization interface, it is subjected to difference pulse per second (PPS), sectors punching, IRIG-B clock synchronization etc..
External communication interface module is connected with small power station's active reactive control device, for realizing built-in e-SIM card is based on
The external communication interface module of the communication unit of Internet of Things chip wireless communication module and small power station's active reactive control device it
Between carry out data information interaction.Meanwhile external communication interface module is connected with data acquisition module, is used for the active nothing of small power station
The data information transfer of function control device is to data acquisition module.
It is main collection, diversity antenna module be connected with the wireless communication module of built-in e-SIM card Internet of Things chip, for transmission with
Receive the radiofrequency signal of the wireless communication module of built-in e-SIM card Internet of Things chip.
Data acquisition module is connected with communication device Core Microcontroller, logical for giving collected data information transfer
T unit Core Microcontroller carries out data processing.
Communication device Core Microcontroller is using the high-performance 32-bit technical grade network processes for configuring high-capacity and high-speed memory
Device, with data acquisition module, communication device power detecting and switching module, storage unit, built-in e-SIM card Internet of Things chip
Wireless communication module, user's operation panel are connected, and for handling and checking the data information of transmission and receiving, can satisfy small water
Requirement of the electric active reactive control system to data processing speed.
Communication device power detecting and switching module, with main power supply module, standby power supply module is connected.For detecting master
Whether power module and standby power supply module have that there are DC power supply 5V/24V.When main power supply module power loss, can not export
When DC power supply, DC power supply is automatically switched to be powered by standby power supply module by communication device power detecting and switching module.When
After main power supply module recovery power supply, communication device power detecting and switching module automatically switch DC power supply by main power supply
Module for power supply.
Wherein, main power supply module, for providing the communication based on built-in e-SIM card Internet of Things chip wireless communication module
The main power supply of unit, by will be based on the friendship in small power station's active reactive control device of Internet of Things chip wireless communication module
Galvanic electricity source 220V/380V is converted into DC power supply 5V/24V(and is determined according to user demand), receiving communication device power supply
After detection and switching module instruction, communication device Core Microcontroller is powered.
Standby power supply module, for providing the communication unit based on built-in e-SIM card Internet of Things chip wireless communication module
Backup power source, provide DC power supply 5V/24V(by configuring small-sized super capacitor and determined according to user demand), receiving
After communication device power detecting and switching module instruction, communication device Core Microcontroller is powered.
Storage unit uses technical grade storage chip, and reliability with higher, shock resistance, anti-interference are filled with communicate
It sets Core Microcontroller to be connected, for storing the data information of idle compensating control transmission.
The wireless communication module of built-in e-SIM card Internet of Things chip and main collection, diversity antenna module, communication device core are micro-
Controller is connected, and sends communication device core micro-control to for realizing the data information for receiving main collection, the acquisition of diversity antenna module
Device processed, and need the data information transmitted to be sent to by main collection, diversity antenna module communication device Core Microcontroller
Active reactive control system main website, small power station.
User's operation panel is connected with communication device Core Microcontroller, reads and communicates from communication device Core Microcontroller
Unit operating parameter, live data values, communication unit configuration parameter, for realizing having access to and checking communication unit letter on the spot
Breath, while communication unit configuration parameter can be modified in user's operation panel, and be transmitted to communication device core microcontroller
Device is applied.
Claims (8)
1. a kind of region small hydropower station active reactive control system based on Internet of Things, it includes being based on Internet of Things chip channel radio
Believe small power station's active reactive control device of module, it is characterised in that: the small power station based on Internet of Things chip wireless communication module
Active reactive control device is connect with the mobile private network base station radio of Internet of Things；The mobile private network base station of Internet of Things and region small hydropower station
The connection of active reactive control system main website；The region small hydropower station active reactive control system main website includes acquisition interchanger,
The mobile private network base station of Internet of Things after public network safety protection equipment with acquisition interchanger by connecting；Acquire interchanger respectively with acquisition
Server, calculation server, application server, database server are connected with management server.
2. a kind of region small hydropower station active reactive control system based on Internet of Things according to claim 1, feature
Be: small power station's active reactive control device based on Internet of Things chip wireless communication module, it includes: that small power station is active
Idle control device, switching value open into module, switching value output module and Analog input mModule respectively with the active nothing of small power station
The connection of function control device conducting wire；Small power station's active reactive control device is wirelessly communicated with based on built-in e-SIM card Internet of Things chip
The communication unit conducting wire of module connects.
3. a kind of region small hydropower station active reactive control system based on Internet of Things according to claim 2, feature
Be: the communication unit based on built-in e-SIM card Internet of Things chip wireless communication module includes communication device core micro-control
Device processed, communication device Core Microcontroller are connect with user's operation panel, storage unit and data acquisition module conducting wire respectively；It is logical
T unit Core Microcontroller is connect with the wireless communication module conducting wire of built-in e-SIM card Internet of Things chip.
4. a kind of region small hydropower station active reactive control system based on Internet of Things according to claim 2, feature
Be: communication device Core Microcontroller is connect with GPS wireless module conducting wire.
5. a kind of region small hydropower station active reactive control system based on Internet of Things according to claim 2, feature
Be: it further includes main electricity module and standby power supply module, and the main electricity module and standby power supply module divide
It is not connect with communication device power detecting and switching module conducting wire；Communication device power detecting and switching module and communication device core
The connection of heart microcontroller conducting wire.
6. a kind of region small hydropower station active reactive control system based on Internet of Things according to claim 2, feature
Be: data acquisition module is connect with external communication interface module conducting wire.
7. a kind of region small hydropower station active reactive control system based on Internet of Things according to claim 2, feature
Be: GPS wireless module is configured with hardware clock synchronization interface.
8. a kind of region small hydropower station active reactive control system based on Internet of Things according to claim 3, feature
Be: the wireless communication module of built-in e-SIM card Internet of Things chip and intelligent low-pressure comprehensive distribution box management system main website are wireless
Connection.
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| CN110535845A (en) * | 2019-08-21 | 2019-12-03 | 四川中鼎科技有限公司 | A kind of GROUP OF HYDROPOWER STATIONS remote date transmission method, system, terminal and storage medium based on Internet of Things |
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