CN207571572U - Current conversion station measure and control device based on PROFIBUS-DP buses - Google Patents
Current conversion station measure and control device based on PROFIBUS-DP buses Download PDFInfo
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- CN207571572U CN207571572U CN201721414179.0U CN201721414179U CN207571572U CN 207571572 U CN207571572 U CN 207571572U CN 201721414179 U CN201721414179 U CN 201721414179U CN 207571572 U CN207571572 U CN 207571572U
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Abstract
The utility model provides a kind of current conversion station measure and control device based on PROFIBUS DP buses, it is characterised in that：This measure and control device includes main processing block, fieldbus communications module, alternating current-direct current analog quantity processing module, intake module, the amount of outputing module, power module, bus backplane and indicating module；Wherein main processing block, alternating current-direct current analog quantity processing module and fieldbus communications module are intelligent object, they together constitute the multi-processor parallel processing system of close-coupled, to meet the requirement of multitasking, AC/DC sampling and field bus communication to processing speed.The utility model realizes the observing and controlling to current conversion station based on PROFIBUS DP buses, facilitates debugging and operation and maintenance, under the premise of safe and reliable operation is ensured, realizes the complete upgrading of function, can meet the requirement of various direct current transportation applications.
Description
Technical field
The utility model is related to a kind of current conversion station measure and control devices based on PROFIBUS-DP buses, belong to electrical detection skill
Art field.
Background technology
With extra-high voltage direct-current, transverter connection in series-parallel, current conversion station layer-specific access AC system, multiterminal element, flexible direct current
And the popularization of the New DC transmission application such as intelligent current conversion station, higher requirement is proposed to the performance of measure and control device.Observing and controlling
Device is as a kind of distributed AC servo system equipment, and the usage amount in a DC engineering is generally between 300 ~ 600.Early period
Measure and control device is generally there are processing capacity deficiency, and I/O resource distributions are dumb, and AC/DC sampling precision is not high, and synchronization function lacks
Lose, pair when mode is single and the weakness such as maintainable difference, be not suitable for the needs of Novel DC engineer application, should carry out complete
The technology upgrading in face.
DC control and protection system is typically divided into operator control layer in current conversion station, mechanical floor is protected in control and existing
Field three levels of key-course.Measure and control device is located at the field control layer of system, and major function is to realize primary system and equipment
The acquisition of operation data calculates storage and the output of control command.Because of the needs of Control protection system redundant configuration, control protection
The fieldbus of dual is generally configured between layer equipment and field control layer, in order to form the redundancy structure of needs.
The novel measure and control device of present apparatus development closely relies on more than engineering demand, in line with increase and enhanced feature and property
Can, the principle of debugging and operation and maintenance is facilitated to carry out innovative development.The PROFIBUS-DP fieldbus that the present apparatus uses defines
First layer, the second layer and user interface layer in seven-layer structure communication standard model, remainder layer are not used.This knot simplified
Structure so that application layer can direct access link layer data, so as to ensure that the high efficiency of transmission of data.Show by PROFIBUS-DP
In the field level communication system that field bus is formed, measure and control device is as a kind of intelligentized I/O slave stations, with controlling protective layer equipment
The two-way communication network of multiple spot is constituted, to realize the acquisition of field data and relevant control function.
Utility model content
The utility model provides a kind of current conversion station measure and control device based on PROFIBUS-DP buses, passes through following technical side
Case is realized：
Hardware design：Mainly include main processing block, fieldbus communications module, alternating current-direct current analog quantity processing module, open
Enter amount module, the amount of outputing module, power module, bus backplane and indicating module.
Each module connection relation is：Main processing block, alternating current-direct current analog quantity processing module and fieldbus communications module are equal
For intelligent object, they together constitute the multi-processor parallel processing system of close-coupled；Core bus is divided into conventional data
Two kinds of bus and quick I/O buses；Common data bus is realized as high-speed data and controlling bus between each processor module
Data interaction；Quick I/O buses then using general purpose I/O buses mouth of primary processor itself after decoding extends directly with open into
It measures, the amount of outputing module interface；PROFIBUS-DP bus communication modules use dual design to support redundancy communication framework；Dress
The envelop of function of its application can greatly be extended by putting the CAN interface of configuration, can not only be realized at the scene to measuring greatly
The networking debugging of control device can also be achieved the local chain control between multiple measure and control devices in control area.
The main processing block core processor selects 16 8-digit microcontroller XC167 of Infineon technical grades high-performance；Control
Device processed has Multiple Interrupt Sources, 16 Priority interrupts and high speed PEC (peripheral events controller) Interrupt Processing Model；On piece periphery
System can provide such as large capacity I/O, ADC, CAN physical interfaces；The piece of 16 M address spaces of controller translates code selectively by a piece of
CPLD realize, the FLASH memory spaces of each 512 KB of SRAM and two panels of 512 KB of configuration, can meet respectively code operation with
Parameter storage needs；CAN physical interfaces select isolation type bus transceiver CTM1050, and bus interface meets CAN 2.0B technologies
Specification.
The fieldbus module realizes that the bus interface of PROFIBUS-DP slave stations and link layer data exchange appoint at a high speed
Business；This module realizes that ASIC selects SIEMENS companies SPC3 PROFIBUS intelligent slave stations using MCU+ASIC chip forms
Communication protocol chip supports DPVO/V1, can automatic identification and support highest 12Mbit/s transmission rates；Completely redundantization design
Bus module provides two kinds of physical interfaces of electric signal and optical signal；Electrical interface uses RS485 level to be connected with D-SUB, optical interface
62.5/125 multimode optical cable is selected to be connected in a manner of ST；Bus interface selects high CMR（10 kV/us@VCM=1000V）Binary channels
Photo-coupler A2631 and quick Overvoltage suppressing pipe carry out signal isolation and protection.
The alternating current-direct current analog quantity processing module exchange input power converter using high-precision, high stability 1A and
100 V measurement type mutual inductors, DC analogue quantity use 0.05% linearity optically-coupled isolation amplifier C79B, can support 20mA or 5V
The isolation input of direct current signal.Forward direction acquisition channel configuration active low-pass filter (LPF), harmonic suppression type zero-crossing examination and same
When sampling ADC conversion circuit；ADC converters are adopted simultaneously for 16 6 channels of two panels protects SAR type low noise acoustical convertor AD7656, tool
Standby ± 10V bipolar voltages input, multi-disc Synchronization Control, maximum 250ksps sample rates, 4LSBs INL and high SNR（86.5dB,
During 50kHz）, meet to voltage and current ± 0.2%, the measurement demand of ± 0.5% accuracy of active reactive.
The intake module is using having capacitance-resistance filter, Phototube Coupling and Schmidt's property driving circuit design and reinforcing
Voltage threshold designs.
The amount of the outputing module is using the electromagnetic relay G6RN of high voltage, high interference immunity, the grouping volume that control circuit uses
Code and double-direction control technology can avoid accidentally exporting caused by internal circuit failure completely；The feedback of status access designed in device
The generation of monitoring failure in time and quick lock outlet.
The power module flows Hot Spare mode using the redundancy with minimum crash rate and coupling pressure drop is minimum
MOSFET coupled modes, it is ensured that the load overall stability of 5V output voltage ± 1%.
Software for Design：It is divided into configuration tool software and functional software two parts.Configuration tool software meets configuration, shows
Show, control, calibrating and diagnostic function, and being designed with electric vector spirogram, leading time Tcs measurement；Functional software follows distribution
Principle designs, and modularization, structured programming are carried out using C language, including main control processing software, bus communication software and hands over straight
Analog quantity software.
The main control processing software is responsible for PROFIBUS communications, quantity of state acquisition, analog quantity collection, logout, is opened
When going out control, synchronizing pair and CAN bus communication task, software use multipriority cycle task structure；Simultaneously by each son
The rational allocation in functional task period and optimization data input and output and control process algorithm.
The clock control circuit of the main control processing software can be real by the GPS interrupt modes that rising edge of a pulse is divided to trigger
Now it is not more than the time error of 50us, compatible hardware interface can also realize PPS, IRIG-B clock code time adjustment function.
The main control handles a kind of patterned programming interlock logic rule of Software for Design：The input of interlocking can be
The amount of outputing inputs or the internal state variable of DC control protection, output then need the controlled device interlocked for control；Dress
The programming and debugging by the Implement of Function Module application software such as patterned conditional function, logical function are put, is finally compiled into
Machine code is run.
The bus communication software is located at fieldbus module, completes and leads by PROFIBUS-DP field-bus interfaces
The communication stood；Module is using the protocol chip SPC3 for being integrated with DP state machines（ASll chips）To ensure that the behavior of more situations is consistent
Property, bus is in experience parametrization, configuration with being exchanged after user data transmission three phases into normal user data；Communication
The main working process of program is exactly the interruption generated according to SPC3, reads the state of interrupt register and receives number to SPC3
The user's output data sent according to the main website of buffering area dumps to common data bus DPRAM areas, while tissue is inputted through SPC3
Buffering area is sent to the slave station data of main website.
It is described that straight analog quantity software is handed over to use the sample frequency for violating point per the primitive period for of ac, meeting Nai Kuisi
Under the premise of special sampling thheorem, the measurement needs of 13 order harmonic components superposition are fully met；The 16 ADC converters selected can disappear
Except conversion and influence of the mathematical operation link quantization error to measurement result, while the zero crossing based on strong harmonic inhibition capability touches
Power Generation Road captures mechanism with the dynamic that controller PEC quick-speed interruptions response technology, Multifunction timed structure are mutually arranged in pairs or groups and is easily achieved
To fundamental frequency, accurately real-time tracking is with measuring, so as to synchronous change sampling time interval.
Description of the drawings
Fig. 1 is the overall technological scheme figure of the utility model；
Fig. 2 is the main control software task period profile figure of the utility model；
Fig. 3 is the major function plate schematic diagram of the utility model.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
Such as Fig. 1, the current conversion station measure and control device based on PROFIBUS-DP buses includes main processing block, fieldbus
Communication module, alternating current-direct current analog quantity processing module, intake module, the amount of outputing module, power module, bus backplane and instruction mould
Block.
Main processing block, alternating current-direct current analog quantity processing module and fieldbus communications module are intelligent object, they are common
With the multi-processor parallel processing system for constituting close-coupled, to meet multitasking, AC/DC sampling and fieldbus
The requirement to communicate to processing speed.
Core bus is divided into two kinds of common data bus and quick I/O buses；Common data bus as high-speed data and
Controlling bus realizes the data interaction between each processor module；Quick I/O buses then utilize general purpose I/O of primary processor itself
Bus mouth, directly with intake, the amount of outputing module interface, is controlled after decoding extends with meeting quantity of state Quick Acquisition with output
Needs.
PROFIBUS-DP bus communication modules use dual design to support redundancy communication framework；The CAN of device configuration
Bus interface can greatly extend the envelop of function of its application, can not only realize the networking to big measurement and control device at the scene
It debugs, can also be achieved the local chain control between multiple measure and control devices in control area.The high-speed comparator is using ultrafast
Type voltage comparator ADCMP567, equivalent inpnt rise time bandwidth are 5GHz, can compare 300MHz ~ 3GHz letters well
Number.
Such as Fig. 2, how excellent the main control processing software use of the current conversion station measure and control device based on PROFIBUS-DP buses is
First grade cycle task structure；Simultaneously by the rational allocation to each subfunction duty cycle and optimization data input and output with
Control process algorithm；The quantity of state acquisition of device is placed in 1 ms tasks, to meet the SER temporal resolutions of 1 ms, 4 ms
Channel and redundancy process cycle can be with engineering site typical bus message loop cycle timesMatch；Analog quantity belongs to slow
Fast transmission demand, being positioned over for 12 ms periods is sufficient for operation monitoring needs；Pair when with same period exit design for hard break triggering
Precision and the same period outlet quick acting needs when mode is to meet pulse pair.
Such as Fig. 3, the major function plate schematic diagram of the current conversion station measure and control device based on PROFIBUS-DP buses, exhibition
Main process task is showed, the hardware of three kinds of intelligent objects of fieldbus and analog quantity forms and catenation principle.
The main processing block core processor selects 16 8-digit microcontroller XC167 of Infineon technical grades high-performance；Control
Device processed has Multiple Interrupt Sources, 16 Priority interrupts and high speed PEC (peripheral events controller) Interrupt Processing Model；On piece periphery
System can provide such as large capacity I/O, ADC, CAN physical interfaces；The piece of 16 M address spaces of controller translates code selectively by a piece of
CPLD realize, the FLASH memory spaces of each 512 KB of SRAM and two panels of 512 KB of configuration, can meet respectively code operation with
Parameter storage needs；CAN physical interfaces select isolation type bus transceiver CTM1050, and bus interface meets CAN 2.0B technologies
Specification.
The fieldbus module realizes that the bus interface of PROFIBUS-DP slave stations and link layer data exchange appoint at a high speed
Business；This module realizes that ASIC selects SIEMENS companies SPC3 PROFIBUS intelligent slave stations using MCU+ASIC chip forms
Communication protocol chip supports DPVO/V1, can automatic identification and support 12 Mbit/s transmission rates of highest；Completely redundantization design
Bus module provides two kinds of physical interfaces of electric signal and optical signal；Electrical interface uses RS485 level to be connected with D-SUB, optical interface
Select 62.5/125 } m multimode optical cables connect in a manner of ST；Bus interface selects high CMR (10 kV/us@VCM=1 000 V) double
Channel photo-coupler A2631 and quick Overvoltage suppressing pipe carry out signal isolation and protection.
The alternating current-direct current analog quantity processing module exchange input power converter using high-precision, high stability 1A and
100 V measurement type mutual inductors, DC analogue quantity use 0.05% linearity optically-coupled isolation amplifier C79B, can support 20 mA or 5V
The isolation input of direct current signal.Forward direction acquisition channel configuration active low-pass filter (LPF), harmonic suppression type zero-crossing examination and same
When sampling ADC conversion circuit；ADC converters are adopted simultaneously for 16 6 channels of two panels protects SAR type low noise acoustical convertor AD7656, tool
Standby ± 10V bipolar voltages input, multi-disc Synchronization Control, maximum 250 ksps sample rates, 4 LSBs INL and high SNR (86.5
When dB, 50 kHz), meet to ± 0.2 % of voltage and current, the measurement demand of ± 0.5% accuracy of active reactive.
Finally it should be noted that：The above is only the preferred embodiment of the utility model, not to the utility model
It imposes any restrictions, those of ordinary skill in the art still can be to the specific implementation of the utility model with reference to above-described embodiment
Mode is modified or replaced equivalently, these without departing from the spirit and scope of the utility model any modification or equally replace
It changes, within the claims for applying for pending the utility model.
Claims (7)
1. the current conversion station measure and control device based on PROFIBUS-DP buses, it is characterised in that：Main processing block, field bus communication
Module, alternating current-direct current analog quantity processing module, intake module, the amount of outputing module, power module, bus backplane and indicating module；
Connection relation between each module is：
Main processing block, alternating current-direct current analog quantity processing module and fieldbus communications module are intelligent object, are together constituted
The multi-processor parallel processing system of close-coupled；Core bus is divided into two kinds of common data bus and quick I/O buses：It is general
Data/address bus realizes the data interaction between each processor module as high-speed data and controlling bus；Quick I/O buses are then sharp
With general purpose I/O buses mouth of primary processor itself after decoding extends directly with intake, the amount of outputing module interface, to meet shape
State amount Quick Acquisition and the needs of output control；PROFIBUS-DP bus communication modules use dual design to support redundancy
Communication construction.
2. the current conversion station measure and control device according to claim 1 based on PROFIBUS-DP buses, it is characterised in that：It is described
Main processing block core processor selects 16 8-digit microcontroller XC167 of Infineon technical grades high-performance.
3. the current conversion station measure and control device according to claim 1 based on PROFIBUS-DP buses, it is characterised in that：It is described
Fieldbus communications module is realized using MCU+ASIC chip forms；The ASIC selects SIEMENS company SPC3
PROFIBUS intelligent slave station communication protocol chips support DPVO/V1, can automatic identification and support 12 Mbit/s transmission rates of highest；
Electrical interface uses RS485 level to be connected with D-SUB, and optical interface selects 62.5/125um multimode optical cables to be connected in a manner of ST.
4. the current conversion station measure and control device according to claim 1 based on PROFIBUS-DP buses, it is characterised in that：It is described
The exchange input power converter of alternating current-direct current analog quantity processing module is mutual using high-precision, high stability 1A and 100 V measurement types
Sensor, DC analogue quantity use 0.05% linearity optically-coupled isolation amplifier C79B, can support 20 mA or 5V direct current signals every
From input；ADC converters for 16 6 channels of two panels are adopted and protect SAR type low noise acoustical convertors AD7656 simultaneously.
5. the current conversion station measure and control device according to claim 1 based on PROFIBUS-DP buses, it is characterised in that：It is described
Intake module, which uses, has capacitance-resistance filter, Phototube Coupling and Schmidt's property driving circuit design and the voltage threshold of reinforcing to set
Meter.
6. the current conversion station measure and control device according to claim 1 based on PROFIBUS-DP buses, it is characterised in that：It is described
The amount of outputing module uses the electromagnetic relay G6RN of high voltage, high interference immunity；Control circuit uses block encoding and double-direction control skill
Art.
7. the current conversion station measure and control device according to claim 1 based on PROFIBUS-DP buses, it is characterised in that：It is described
Power module uses the redundancy with minimum crash rate to flow Hot Spare mode and couples the minimum MOSFET coupled modes of pressure drop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721414179.0U CN207571572U (en) | 2017-10-30 | 2017-10-30 | Current conversion station measure and control device based on PROFIBUS-DP buses |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721414179.0U CN207571572U (en) | 2017-10-30 | 2017-10-30 | Current conversion station measure and control device based on PROFIBUS-DP buses |
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| CN207571572U true CN207571572U (en) | 2018-07-03 |
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| CN201721414179.0U Expired - Fee Related CN207571572U (en) | 2017-10-30 | 2017-10-30 | Current conversion station measure and control device based on PROFIBUS-DP buses |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085786A (en) * | 2018-09-04 | 2018-12-25 | 深圳市雷赛控制技术有限公司 | double-channel field bus design method, control system and computer terminal |
| CN110532204A (en) * | 2019-07-15 | 2019-12-03 | 北京欧蒙医学检验实验室有限公司 | A kind of method and engram analysis equipment of the transmission of multimode control instruction |
-
2017
- 2017-10-30 CN CN201721414179.0U patent/CN207571572U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085786A (en) * | 2018-09-04 | 2018-12-25 | 深圳市雷赛控制技术有限公司 | double-channel field bus design method, control system and computer terminal |
| CN110532204A (en) * | 2019-07-15 | 2019-12-03 | 北京欧蒙医学检验实验室有限公司 | A kind of method and engram analysis equipment of the transmission of multimode control instruction |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180703 Termination date: 20181030 |
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| CF01 | Termination of patent right due to non-payment of annual fee |