CN205921457U - Little electric wire netting control system - Google Patents
Little electric wire netting control system Download PDFInfo
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- CN205921457U CN205921457U CN201620981231.XU CN201620981231U CN205921457U CN 205921457 U CN205921457 U CN 205921457U CN 201620981231 U CN201620981231 U CN 201620981231U CN 205921457 U CN205921457 U CN 205921457U
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
Abstract
The utility model discloses a little electric wire netting control system, including detecting sensor, little electric wire netting controller and static switch. The utility model discloses a silicon controlled rectifier SCR1 of two reverse parallel connections and SCR1, main network side circuit breaker CB1, little electric wire netting side circuit breaker CB2, bypass circuit breaker CB3. When little electric wire netting isolated island operation, main network side circuit breaker CB1, little electric wire netting side circuit breaker CB2, bypass circuit breaker CB3 are off -state, when little electric wire netting in -process that is incorporated into the power networks, the main network side of closing a floodgate earlier circuit breaker CB1, little electric wire netting side circuit breaker CB2 detect static switch both sides voltage amplitude, frequency, phase place and satisfy and be incorporated into the power networks when requiring, and little electric wire netting controller sends pulse signal control SCR1, SCR2, and the bidirectional thyristor switches on when the voltage zero passage, has weakened the impact of the process of being incorporated into the power networks, realizes that little electric wire netting smoothness is incorporated into the power networks. The utility model discloses a based on the static switch of silicon controlled rectifier, realize that the unperturbed between little electric wire netting networking operation mode and the isolated island operation mode switches, satisfy the demand that electric power industry developed rapidly better.
Description
Technical field
This utility model belongs to supply of electric power auxiliary facility control technology field and in particular to a kind of micro-capacitance sensor controls system
System.
Background technology
The drawbacks of in order to solve existing for bulk power grid, improve electrical network power supply reliability, improve the quality of power supply, improve distributed
The permeability of plant-grid connection electrical network, reduces the adverse effect to bulk power grid for the distributed power source, makes full use of regenerative resource simultaneously,
One rationally effectively solution be the angle from system, distributed power source and corresponding load are formed one is
System --- micro-capacitance sensor.American Electric Power reliability engineering solution association (certs) defines the concept of " micro-capacitance sensor " for the first time: micro-
Electrical network is a kind of system being collectively constituted by load and micro power, and it can provide a user with electric energy and heat energy；In micro-capacitance sensor
TRT mainly carries out accessing electrical network after energy conversion by power electronics interface arrangement, it is desirable to provide necessary control.Therefore,
The control of micro-capacitance sensor is the condition that micro-capacitance sensor operation must be resolved, and the performance of micro grid control system is steady for micro-capacitance sensor
Determine reliability service particularly significant.Micro grid control system is communicated with micro source controller, energy storage controller, load governor
Carry out information exchange, realize micro-capacitance sensor and monitor in real time and coordinate to control；Meanwhile, micro grid control system is accepted by communication mode
Distribution management center (dms) United Dispatching and management, and by the important information real-time Transmission of micro-capacitance sensor to distribution management center.State
The interior development to micro grid control system and exploitation are also immature, and the micro grid control system using at present is based on dsp mostly
Design, static switch adopts traditional chopper, there is more problem, first, dsp chip main advantage is at numeral
Reason, is short of communication management, and dsp chip itself does not support ethernet communication, needs external ethernet controller just to enable ether
Network telecommunication function, complexity realized by software, can affect the process speed of controller when integrating digital processing and communication management again
Degree and performance；Secondly, the ad sampling unit sampling channel that dsp chip carries in itself is few, resolution low it is impossible to meet actually used
Require, need in addition to connect ad sampling A/D chip and could meet sampling channel and sampling precision requirement；Again, micro-capacitance sensor and major network connection
Static switch adopt traditional chopper, breaker closing or turn-off time long, and certain disturbance can be produced it is impossible to realize
No-harass switch between micro-capacitance sensor networking operation pattern and islet operation pattern.
Utility model content
The technical problems to be solved in the utility model be provide a kind of speed faster, precision higher, realize micro-capacitance sensor networking
The micro grid control system of no-harass switch between operational mode and islet operation pattern.
This utility model is to solve above-mentioned technical problem, adopts the following technical scheme that,
A kind of micro grid control system, including detection sensor, micro-capacitance sensor controller and static switch it is characterised in that
Described detection sensor detection voltage and current value, including the second current detecting sensing being arranged on main grid side
Device, the first voltage sensor being arranged on micro-capacitance sensor side and the first current sensor；
Described micro-capacitance sensor controller includes data processing module, communication unit, switching input module, output switch parameter mould
Block, data memory module, power module,
Described data processing module acquisition testing voltage and current value, and send control signal to Group of Silicon Controlled Rectifier, chopper；
The up communication with distribution management center, descending with micro-capacitance sensor in micro source controller, energy storage controller, load governor
Communication；
Described data processing module communication stitch and communication unit connect, and described communication unit provides communication carrier, carries out
The up communication with distribution management center, descending with micro-capacitance sensor in micro source controller, energy storage controller, load governor
Communication；
Described data processing module input stitch and switching input module connect, and described switching input module detects institute
State the working condition of chopper, and send to described data processing module
Described data processing module output stitch and switching value output module connect, and described switching value output module exports number
The control signal sending according to processing module, and send to described chopper；
Described data processing module storage stitch data memory module connects, and opens described in described data memory module storage
Magnitude of voltage and the current value that input module detects described static switch is measured in pass, stores the controlled quentity controlled variable that described data processing module sends
Signal；
Described data processing module data acquisition stitch and detection sensor connect, acquisition testing voltage and current value；
The epwm stitch of described data processing module and Group of Silicon Controlled Rectifier connect, and send control signal to Group of Silicon Controlled Rectifier；
Described data processing module power supply stitch and power module connect, input service power supply；
Described static switch includes Group of Silicon Controlled Rectifier and chopper,
Described Group of Silicon Controlled Rectifier is controllable silicon scr1 and scr2 of two reverse parallel connections；
Described chopper includes major network side chopper cb1, micro-capacitance sensor side chopper cb2 and bypass breaker cb3；
On described main electrical network, the second current detection sensor is set, then is connected by major network side chopper cb1 and Group of Silicon Controlled Rectifier
Connect, pass through micro-capacitance sensor side chopper cb2, first voltage sensor and the first current sensor afterwards and be connected with micro-capacitance sensor；Described
Bypass cable connects the two ends of Group of Silicon Controlled Rectifier by bypass breaker cb3.
As optimization, described data processing module is f28m35 double-core chip；Described f28m35 double-core chip internal is integrated
C2000 processor and m3 processor, the up communication with distribution management center of described m3 processor, descending with micro-capacitance sensor in micro-
Power-supply controller of electric, energy storage controller, the communication of load governor；Described c2000 processor acquisition testing voltage and current value, and
Send control signal to Group of Silicon Controlled Rectifier, chopper；
As optimization, described micro-capacitance sensor controller also includes active crystal oscillator module, provides base to described data processing module
Quasi- frequency；
As optimization, described communication unit includes can communication module, rs485 communication module, rs232 communication module, ether
Net transceiver module；
Described ethernet transceiver module and described data processing module ethernet controller stitch connect, and realize communication
Ethernet transmits；Described ethernet transceiver module is dp83848c ethernet transceiver；
Described can communication module and described data processing module can stitch connect, and realize the can bus transfer of communication；
Described rs485 communication module passes through electrical level transferring chip and described data processing module uart2 stitch connects, and realizes
The rs485 transmission of communication；
Described rs232 communication module passes through electrical level transferring chip and described data processing module uart1 stitch connects, and realizes
The rs232 transmission of communication；
As optimization, described micro-capacitance sensor controller also includes zero-crossing detection circuit, described zero-crossing detection circuit defeated
Go out end and described data processing module ecap stitch connects；Described zero-crossing detection circuit in alternating current, when waveform is from just half
Circumferential negative half period is changed when zero-bit, exports detection signal；
As optimization, described micro-capacitance sensor controller also includes watchdog module, and described watchdog module data processes mould
Block is connected；Described watchdog module makes regular check on data processing module situation, makes a mistake just to number once data processing module
Send Restart Signal according to processing module；
As optimization, described micro-capacitance sensor controller also includes lcd display module and/or indicating lamp module, and described lcd shows
Voltage data, current data, On-off signal data and output switch parameter data that module video data processing module obtains；Institute
State indicating lamp module video data processing module working condition；Described lcd display module and/or indicating lamp module and described data
Processing module gpio stitch connects；
As optimization, described micro-capacitance sensor controller also includes voltage/current signals modulate circuit, described voltage/current letter
Number magnitude of voltage that modulate circuit detects to described detection sensor and current value enter line translation, filtering and voltage division processing successively, place
The data acquisition stitch that signal after reason inputs f28m35 double-core chip in a differential manner is sampled.
This utility model includes controllable silicon scr1 and scr1 of two reverse parallel connections, major network side chopper cb1, micro-capacitance sensor side
Chopper cb2, bypass breaker cb3.When micro-capacitance sensor islet operation, major network side chopper cb1, micro-capacitance sensor side chopper cb2,
Bypass breaker cb3 is off-state；During micro-grid connection, first break in combined floodgate major network side chopper cb1, micro-capacitance sensor side
Road device cb2, detects static switch both sides voltage magnitude, when frequency, phase place meet grid-connected requirement, and micro-capacitance sensor controller sends arteries and veins
Rush signal and control scr1, scr2, bidirectional triode thyristor turns in voltage zero-cross, reduce the impact of simultaneously network process, realize micro- electricity
Net is smooth grid-connected；After stability of grid connection is run, first close bypass breaker cb3, then cut-off breaker major network side chopper cb1, micro-
Grid side chopper cb2, is connected the synchronous operation of main electrical network and micro-capacitance sensor by bypass breaker cb3, reduces bidirectional triode thyristor long
Phase is run and damages；When micro-capacitance sensor controller according to isolated island criterion judge micro-capacitance sensor need islet operation or with bulk power grid isolation
When, micro-capacitance sensor controller controls bypass breaker cb3 to disconnect.This utility model adopts based on silicon controlled static switch,
Make that micro grid control system function is more sophisticated, speed faster, precision higher, realize micro-capacitance sensor networking operation pattern and isolated island fortune
No-harass switch between row mode, preferably meets the demand that power industry develops rapidly.
Brief description
Fig. 1 this utility model is in the application structure figure of low pressure micro-capacitance sensor；
Fig. 2 is network communication configuration figure of the present utility model；
Fig. 3 is hardware architecture block diagram of the present utility model.
Specific embodiment
With reference to the accompanying drawings and examples, it is further elaborated on content of the present utility model.
As Figure 1-3, a kind of micro grid control system, including detection sensor, micro-capacitance sensor controller and static switch,
Described detection sensor detection voltage and current value, including the second current detection sensor being arranged on main grid side
Pt2, first voltage detection sensor ct1 being arranged on micro-capacitance sensor side and the first current detection sensor pt1；
Described micro-capacitance sensor controller includes data processing module, communication unit, switching input module, output switch parameter mould
Block, data memory module, active crystal oscillator module, zero-crossing detection circuit, watchdog module, lcd display module and/or display lamp
Module, voltage/current signals modulate circuit, power module,
Described data processing module acquisition testing voltage and current value, and send control signal to Group of Silicon Controlled Rectifier, chopper；
The up communication with distribution management center dms, descending with micro-capacitance sensor in micro source controller, energy storage controller, spatial load forecasting
The communication of device；Described data processing module is f28m35 double-core chip；The integrated c2000 process of described f28m35 double-core chip internal
Device and m3 processor, the up communication with distribution management center of described m3 processor, descending and in micro-capacitance sensor micro battery controls
Device, energy storage controller, the communication of load governor；Described c2000 processor acquisition testing voltage and current value, and to controllable silicon
Group, chopper send control signal；
Described data processing module communication stitch and communication unit connect, and described communication unit provides communication carrier, carries out
The up communication with distribution management center, descending with micro-capacitance sensor in micro source controller, energy storage controller, load governor
Communication；Described communication unit includes can communication module, rs485 communication module, rs232 communication module, ethernet transceiver mould
Block；Described ethernet transceiver module and described data processing module ethernet controller stitch connect, and realize the ether of communication
Net transmission；Described ethernet transceiver module is dp83848c ethernet transceiver；At described can communication module and described data
Reason module can stitch connects, and realizes the can bus transfer of communication；Described rs485 communication module passes through electrical level transferring chip and institute
State data processing module uart2 stitch to connect, realize the rs485 transmission of communication；Described rs232 communication module passes through level conversion
Chip and described data processing module uart1 stitch connect, and realize the rs232 transmission of communication；
Described data processing module input stitch and switching input module connect, and described switching input module detects institute
State the working condition of chopper, and send to described data processing module
Described data processing module output stitch and switching value output module connect, and described switching value output module exports number
The control signal sending according to processing module, and send to described chopper；
Described data processing module storage stitch data memory module connects, and opens described in described data memory module storage
Magnitude of voltage and the current value that input module detects described static switch is measured in pass, stores the controlled quentity controlled variable that described data processing module sends
Signal；
Described data processing module data acquisition stitch and detection sensor connect, acquisition testing voltage and current value；
The epwm stitch of described data processing module and Group of Silicon Controlled Rectifier connect, and send control signal to Group of Silicon Controlled Rectifier；
Described active crystal oscillator module and described data processing module, provide reference frequency to described data processing module；
The outfan of described zero-crossing detection circuit and described data processing module ecap stitch connect；Described zero crossing inspection
Slowdown monitoring circuit, in alternating current, when waveform is changed through zero-bit from just half circumferential negative half period, exports detection signal；
Described watchdog module data processing module is connected；Described watchdog module makes regular check on data processing module shape
Condition, makes a mistake once data processing module and just sends Restart Signal to data processing module；
The voltage data of described lcd display module video data processing module acquisition, current data, On-off signal data
With output switch parameter data；Described indicating lamp module video data processing module working condition；Described lcd display module and/or
Indicating lamp module and described data processing module gpio stitch connect；
To described detection sensor, the magnitude of voltage detecting and current value are carried out described voltage/current signals modulate circuit successively
Conversion, filtering and voltage division processing, the data acquisition stitch that the signal after process inputs f28m35 double-core chip in a differential manner enters
Row sampling；
Described data processing module power supply stitch and power module connect, input service power supply；
Described static switch includes Group of Silicon Controlled Rectifier and chopper,
Described Group of Silicon Controlled Rectifier is controllable silicon scr1 and scr2 of two reverse parallel connections；
Described chopper includes major network side chopper cb1, micro-capacitance sensor side chopper cb2 and bypass breaker cb3；
Second current detection sensor pt2 is arranged on described main electrical network, then passes through major network side chopper cb1 and Group of Silicon Controlled Rectifier
Connect, pass through afterwards micro-capacitance sensor side chopper cb2, first voltage detection sensor ct1 and the first current detection sensor pt1 with
Micro-capacitance sensor connects；Described bypass cable connects the two ends of Group of Silicon Controlled Rectifier by bypass breaker cb3.
This utility model selects f28m35 double-core chip, makes full use of its abundant internal resource.F28m35 double-core chip
It is integrated with two processors, a m3 processor, a c2000 processor, wherein m3 processor have powerful Communication processing
Ability, c2000 processor has powerful data-handling capacity, using the respective advantage of two processors, it is possible to achieve micro- electricity
The requirement to communication management data disposal ability for the network control system.In f28m35 double-core chip, m3 processor has four synchronizations
Serial line interface (ssi)/Serial Peripheral Interface (SPI) (spi), two internal integrated circuit i2c, Liang Ge controller local area network can,
Individual 10/100 Ethernet (enet) 1588 medium independent interface, 2kb inter-processor communication (ipc) message ram.C2000 processor
There is a serial communication interface sci, a Serial Peripheral Interface (SPI) spi, an internal integrated circuit i2c, logical between 2kb processor
Letter (ipc) message ram, with the addition of viterbi, complex mathematical, crc unit (vcu) instruction accelerator, and execution is efficient
Viterbi, complex arithmetic computing, 16 fast Fourier transforms (fft) and crc algorithm, have very strong data-handling capacity.
C2000 processor carries 20 sampling channels, double 12 analog-digital converters (adc), can meet micro grid control system to quiet
State switchs the requirement of both sides voltage x current sampling.
As shown in figure 1, this utility model is in the application structure figure of low pressure micro-capacitance sensor, the specific work process of this utility model
As follows:
1st, micro-capacitance sensor controller real-time monitoring contact line voltage, electric current, frequency and each micro battery, energy storage device, load
Running status, by uplink communication mode to distribution management center send in real time micro-capacitance sensor get in touch with line voltage, electric current, frequency,
Power and static switch state, are easy to scheduling and the monitoring at distribution management center；By judging major network side chopper cb1, micro-
Grid side chopper cb2, bypass breaker cb3 are off carrying out isolated island detection, quickly judge island state；
2nd, during micro-capacitance sensor networking operation, major network side chopper cb1, micro-capacitance sensor side chopper cb2 are off, bypass
Chopper cb3 is in "on" position, and bidirectional triode thyristor so can be made to be chronically at off-state, extends bidirectional triode thyristor and uses
In the life-span, decrease the power attenuation causing due to bidirectional triode thyristor.Each micro source controller and energy storage controller adopt pq to control,
Micro grid control system calculates through Optimized Operation, by each micro source controller, the active power of energy storage controller, idle work(
Rate setting value and load governor need the load of excision to be sent to each controller by downgoing communication mode, realize micro-capacitance sensor
Optimized Operation；
3rd, when micro-capacitance sensor is in island state through isolated island detection judgement, micro-capacitance sensor controller remote control disconnects bypass open circuit
Device cb3, and quickly excise insignificant load, the control of master control generator unit is switched to v/f control model, provides for micro-capacitance sensor
Voltage and frequency support, and islet operation mode state signal is passed through communication and sends to each micro source controller, respectively from the micro- electricity of control
Control strategy is switched to island mode by source controller, and common coordination maintains micro-capacitance sensor voltage and frequency stable；
4th, when distribution management center requires micro-grid connection, micro-grid connection control device elder generation breaks remote control combined floodgate major network side
Road device cb1, micro-capacitance sensor side chopper cb2, the then voltage of detection static switch both sides, frequency, phase place, by voltage deviation, frequently
Rate deviation is added in the v/f control of its master control generator unit, adjusts voltage and the frequency of micro-capacitance sensor, when above-mentioned parameter deviation is full
During sufficient grid-connected conditions, meet the grid-connected conditions moment by catching phase contrast, send Pulse Width Control scr1, scr2 conducting, realize certainly
Dynamic smooth grid-connected, after micro-capacitance sensor stable operation, combined floodgate bypass breaker cb3, disconnect major network side chopper cb1, break in micro-capacitance sensor side
Road device cb2, micro-capacitance sensor networking operation.
As Fig. 2, being embodied as can be with four kinds of communication mode, rs232 bus, rs485 bus, can bus and Ethernet.
In Fig. 2, with micro grid control system as main equipment in downlink communication mode, other devices are to have between equipment, master-slave equipment
Two kinds of communication modes standby each other, are respectively as follows: rs485 bus communication mode and can bus communication mode；Uplink communication adopts
Ethernet communication mode, the Ethernet interface of micro grid control system is accessed wide area network by router.F28m35 double-core core
Piece has been internally integrated 5 uart communication interfaces, has been realized in general rs232 and rs485 standard interface at present, can be by state
Family's power industry standard 104 stipulations or self-defined stipulations are communicated with micro source controller, energy storage controller, load governor,
Can realize communicating with micro source controller, energy storage controller, load governor by can bus；By ethernet communication side
Formula and distribution management center to center communications.
As Fig. 3, in the present embodiment, physical circuit is described in detail as follows:
1st, the governor circuit of device is realized, the core apparatus that micro grid control system controls as micro-capacitance sensor, needs quick
Data processing and multiple communication capacity, and controller as whole system core it is necessary to have abundant inside
Resource and the external hardware interface being easy to extension.The first set product in the concerto series of products that the present embodiment is selected
F28m35 double-core chip, has had both the data-handling capacity of c2000 and the multi-communication mode feature of m3, it has been internally integrated
The shared ram of ram and 64kb of flash, 32kb of 512kb, substantial amounts of universal or special i/o, integrated multi-channel buffering simultaneously
Serial ports mcbsp, uart generic asynchronous serial mouth, spi Serial Peripheral Interface (SPI), sci serial communication interface, can controller area net
The peripheral interface circuit that network, ethernet communication interface etc. are commonly used.F28m35 has been internally integrated can bus module, completely compatible
Can2.0b standard agreement.There are 32 programmable message mailbox, can run on low-power consumption mode, programmable bus wake up, to remote
Journey request message automatic-answering back device, retransmits after arbitration is lost or transmission malfunctions automatically.This device is carried using f28m35 double-core chip
Can controller design can bus hardware communicate with micro source controller, energy storage controller, load governor.Can is to external
After the isolation of photoelectrical coupler, external can Bus Interface Chip collectively forms can bus to mouth pin cantxa and canrxa
Communication unit.The ethernet communication interface external ethernet transceiver chip that this device is carried using f28m35 double-core chip
Dp83848c realizes ethernet communication.Pass through between the m3 processor of f28m35 double-core chip internal and c2000 processor to process
Between device, communication (ipc) message ram realizes information sharing；
2nd, the data acquisition circuit of device is realized, and plurality of voltages, Multi-path electricity stream are mutual respectively through voltage transformer pt, electric current
Sensor ct conversion, resistance sampling and capacitor filtering are transformed to be suitable for the AC signal of collection, and then input ad turns in a differential manner
Change and in chip, carry out sample conversion, monitor and coordinate the real-time controlling, the present embodiment knot to improve micro grid control system
Close f28m35 carry 20 sampling channels, double 12 analog-digital converters (adc) very easily realize voltage, current signal is adopted
Collection.Major network side and micro-capacitance sensor Ce Ge mono- road voltage, through voltage transformer pt, then enter f28m35's through signal conditioning circuit
Ecap module, for measuring major network and micro-capacitance sensor frequency；Multichannel remote signalling amount (break by chopper major network side chopper cb1, micro-capacitance sensor side
Road device cb2, bypass breaker cb3, the state of feeder breaker) after Phototube Coupling, the then gpio60- through f28m35
Gpio65 mouth inputs, in case reading remote signalling information；The gpio68- gpio73 mouth of f28m35 is through Phototube Coupling control relay
Disconnection or adhesive, remote pilot chopper major network side chopper cb1, micro-capacitance sensor side chopper cb2, bypass breaker cb3 with
And feeder breaker closes a floodgate and trips；Two-way pulse is exported by the epwm module of f28m35 quiet through Phototube Coupling output control
Two controllable silicons of state switch；
3rd, data memory module is realized, and combines the spi interface of f28m35 double-core chip, to be deposited using sd card in the present embodiment
Storage data, memory capacity is big, and reading speed is fast.Sd card has two kinds of mode bus, i.e. sd mode bus and spi mode bus.Its
Middle sd mode bus adopt four data line transmission data, and message transmission rate is high, but host-host protocol is complicated, and uses software
Method simulation sd bus is again comparatively laborious, and can reduce the message transmission rate of sd card；And spi mode bus only have a data
Transmission line, although message transmission rate is relatively low, the host-host protocol of spi mode bus is simple, it is easy to accomplish, and m3 process
Utensil has four synchronous serial interfaces (ssi)/Serial Peripheral Interface (SPI) (spi), can adopt spi mode bus for this design.
This utility model adopts the up-to-date f28m35 double-core chip design micro grid control system of ti company, improves micro- electricity
The processing speed of network control system and reliability.F28m35 double-core chip carries 20 sampling channels, double 12 analog-digital converters
(adc), voltage/current signals modulate circuit enters line translation, filtering and voltage division processing successively to monitored signal, the letter after process
Number in a differential manner the ad sampling unit of input f28m35 double-core chip is sampled, and is then read by c2000 processor and deposits
Enter data memory module, sample rate is fast, reliability is high.This utility model is connect using the spi of sd card and f28m35 double-core chip
Mouth completes Large Volume Data with file mode quick storage, meets the requirement to memory space for the huge data.This practicality is new
Type adopt f28m35 double-core chip be core devices, carry out special communication management using m3 processor it is established that multichannel each other
Standby telecommunication mode, has rs485 communication, rs232, can communication and ethernet communication, wherein f28m35 double-core chip
Carry ethernet interface, using ethernet transceiver chip dp83848c realize mass data high-speed remote transmission so that
Software development time greatly shortens, and reliability is also improved.
Claims (8)
1. a kind of micro grid control system, including detection sensor, micro-capacitance sensor controller and static switch it is characterised in that
Described detection sensor detection voltage and current value, including the second current detection sensor, the peace that are arranged on main grid side
It is contained in first voltage sensor and first current sensor of micro-capacitance sensor side；
Described micro-capacitance sensor controller include data processing module, communication unit, switching input module, switching value output module,
Data memory module, power module,
Described data processing module acquisition testing voltage and current value, and send control signal to Group of Silicon Controlled Rectifier, chopper；Up
With the communication at distribution management center, descending with micro-capacitance sensor in micro source controller, energy storage controller, load governor logical
Letter；
Described data processing module communication stitch and communication unit connect, and described communication unit provides communication carrier, carries out up
With the communication at distribution management center, descending with micro-capacitance sensor in micro source controller, energy storage controller, load governor logical
Letter；
Described data processing module input stitch and switching input module connect, and described switching input module detection is described disconnected
The working condition of road device, and send to described data processing module,
Described data processing module output stitch and switching value output module connect, at described switching value output module output data
The control signal that reason module sends, and send to described chopper；
Described data processing module storage stitch data memory module connects, and described data memory module stores described switching value
Input module detects magnitude of voltage and the current value of described static switch, stores the controlled quentity controlled variable letter that described data processing module sends
Number；
Described data processing module data acquisition stitch and detection sensor connect, acquisition testing voltage and current value；
The epwm stitch of described data processing module and Group of Silicon Controlled Rectifier connect, and send control signal to Group of Silicon Controlled Rectifier；
Described data processing module power supply stitch and power module connect, input service power supply；
Described static switch includes Group of Silicon Controlled Rectifier and chopper,
Described Group of Silicon Controlled Rectifier is controllable silicon scr1 and scr2 of two reverse parallel connections；
Described chopper includes major network side chopper cb1, micro-capacitance sensor side chopper cb2 and bypass breaker cb3；
On described main electrical network, the second current detection sensor is set, then is connected by major network side chopper cb1 and Group of Silicon Controlled Rectifier, it
Pass through micro-capacitance sensor side chopper cb2, first voltage sensor and the first current sensor afterwards to be connected with micro-capacitance sensor；Described bypass electricity
Cable connects the two ends of Group of Silicon Controlled Rectifier by bypass breaker cb3.
2. micro grid control system as claimed in claim 1 is it is characterised in that described data processing module is f28m35 double-core core
Piece；The integrated c2000 processor of described f28m35 double-core chip internal and m3 processor, described m3 processor is up and distribution management
The communication at center, descending with micro-capacitance sensor in micro source controller, energy storage controller, the communication of load governor；Described c2000
Processor acquisition testing voltage and current value, and send control signal to Group of Silicon Controlled Rectifier, chopper.
3. micro grid control system as claimed in claim 1 is it is characterised in that described micro-capacitance sensor controller also includes active crystal oscillator
Module, provides reference frequency to described data processing module.
4. micro grid control system as claimed in claim 1 it is characterised in that described communication unit include can communication module,
Rs485 communication module, rs232 communication module, ethernet transceiver module；
Described ethernet transceiver module and described data processing module ethernet controller stitch connect, and realize the ether of communication
Net transmission；Described ethernet transceiver module is dp83848c ethernet transceiver；
Described can communication module and described data processing module can stitch connect, and realize the can bus transfer of communication；
Described rs485 communication module passes through electrical level transferring chip and described data processing module uart2 stitch connects, and realizes communication
Rs485 transmission；
Described rs232 communication module passes through electrical level transferring chip and described data processing module uart1 stitch connects, and realizes communication
Rs232 transmission.
5. micro grid control system as claimed in claim 1 is it is characterised in that described micro-capacitance sensor controller also includes zero crossing inspection
Slowdown monitoring circuit, the outfan of described zero-crossing detection circuit and described data processing module ecap stitch connect；Described zero crossing inspection
Slowdown monitoring circuit, in alternating current, when waveform is changed through zero-bit from just half circumferential negative half period, exports detection signal.
6. micro grid control system as claimed in claim 1 is it is characterised in that described micro-capacitance sensor controller also includes house dog mould
Block, described watchdog module data processing module is connected；Described watchdog module makes regular check on data processing module situation, and one
Denier data processing module makes a mistake and just sends Restart Signal to data processing module.
7. micro grid control system as claimed in claim 1 is it is characterised in that described micro-capacitance sensor controller also includes lcd shows
Module and/or indicating lamp module, voltage data that described lcd display module video data processing module obtains, current data, open
Pass amount input data and output switch parameter data；Described indicating lamp module video data processing module working condition；Described lcd shows
Show that module and/or indicating lamp module and described data processing module gpio stitch connect.
8. micro grid control system as claimed in claim 1 is it is characterised in that described micro-capacitance sensor controller also includes voltage/electricity
Stream signal conditioning circuit, magnitude of voltage and current value that described voltage/current signals modulate circuit detects to described detection sensor
Enter line translation, filtering and voltage division processing successively, the data that the signal after process inputs f28m35 double-core chip in a differential manner is adopted
Collection stitch is sampled.
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| CN201620981231.XU CN205921457U (en) | 2016-08-30 | 2016-08-30 | Little electric wire netting control system |
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| CN201620981231.XU CN205921457U (en) | 2016-08-30 | 2016-08-30 | Little electric wire netting control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107577141A (en) * | 2017-09-11 | 2018-01-12 | 深圳市沃尔奔达新能源股份有限公司 | The grid-connected watch dog monitoring system of dual redundant and electricity generation system |
| CN113162092A (en) * | 2021-05-20 | 2021-07-23 | 南京国电南自新能源科技有限公司 | Distributed energy storage aggregation system and control method thereof |
| US11967858B2 (en) | 2019-10-30 | 2024-04-23 | Ls Electric Co., Ltd. | Static transfer switch, and ups module to which static transfer switch is applied |
-
2016
- 2016-08-30 CN CN201620981231.XU patent/CN205921457U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107577141A (en) * | 2017-09-11 | 2018-01-12 | 深圳市沃尔奔达新能源股份有限公司 | The grid-connected watch dog monitoring system of dual redundant and electricity generation system |
| CN107577141B (en) * | 2017-09-11 | 2021-09-10 | 深圳市沃尔奔达新能源股份有限公司 | Dual-redundancy grid-connected watchdog monitoring system and power generation system |
| US11967858B2 (en) | 2019-10-30 | 2024-04-23 | Ls Electric Co., Ltd. | Static transfer switch, and ups module to which static transfer switch is applied |
| CN113162092A (en) * | 2021-05-20 | 2021-07-23 | 南京国电南自新能源科技有限公司 | Distributed energy storage aggregation system and control method thereof |
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