CN206696686U - A kind of PLC device with simultaneous interconnecting function - Google Patents
A kind of PLC device with simultaneous interconnecting function Download PDFInfo
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- CN206696686U CN206696686U CN201720376419.6U CN201720376419U CN206696686U CN 206696686 U CN206696686 U CN 206696686U CN 201720376419 U CN201720376419 U CN 201720376419U CN 206696686 U CN206696686 U CN 206696686U
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Abstract
The utility model discloses a kind of PLC device with simultaneous interconnecting function, it includes：Module subrack provided with CAN plate, CAN is provided with the CAN plate, and the main control module socket being connected in the CAN, power module socket and several basic IO sockets, wherein：CPU main control modules are plugged with the main control module socket, same period module is plugged with respectively on all or part of basic IO sockets, power module is plugged with the power module socket.Compared with prior art, CPU master controllers, same period module and power module are integrated in same module subrack by the utility model, realize the integration of PLC programmable functions and simultaneous interconnecting function, and it is particularly suitable for the application demand of micro-hydraulic station.
Description
Technical field
The utility model belongs to relay protection of power system and automation control area, and in particular to be it is a kind of have it is same
The PLC device of phase grid-connected function.
Background technology
The grid-connected frequent operation of breaker asynchronous switch-on in power system, the use of the same period (SYN) device are important and crucial.
Progress based on scientific and technological level, various intelligent, microcomputer type synchronous devices arise at the historic moment, and gradually instead of the manual of early stage
Synchronous device, analogue type synchronous device etc., efficiently solve that breaker closing angle error is big, the time arranged side by side is long, the degree of accuracy is low
Etc. various problems.
At this stage, in China's hydroelectric power system, intellectuality is stepping up with automatization level, automatically accurate by microcomputer
The asynchronous switch-on grid-connected system of synchronous device, microcomputer protecting controller and various programmable controllers (PLC) composition obtains
It is commonly used.The function of the above-mentioned asynchronous switch-on grid-connected system being made up of all kinds of self-contained units is very powerful, and it can be effectively
It ensure that the rapidity and accuracy of synchronization paralleling operation.Meanwhile there is this kind of huge asynchronous switch-on grid-connected system system to connect
Line is complicated, debugging is cumbersome, with high costs, safeguards many technical problems such as inconvenience, it is difficult to meet some micro-hydraulic stations
Application demand.
In view of problem above, it is necessary to develop that a kind of integrated level is higher, autgmentability is stronger, the grid-connected work(that possesses asynchronous switch-on
The logic programmable PLC device of energy, to meet the application demand of micro-hydraulic station.
Utility model content
In order to solve the above-mentioned technical problem, on the one hand the utility model provides a kind of PLC with simultaneous interconnecting function
Device, its technical scheme are as follows：
A kind of PLC device with simultaneous interconnecting function, it includes：The module subrack of CAN plate is installed, it is described
The main control module socket that CAN is provided with CAN plate and is connected in the CAN, if power module socket and
Dry basic IO socket, wherein：CPU main control modules, all or part of basic IO are plugged with the main control module socket
Same period module is plugged with socket respectively, power module is plugged with the power module socket.
In a specific embodiment, six basic IO sockets, six bases are provided with the CAN plate
The same period module is plugged with plinth IO sockets respectively.
In a specific embodiment, the CPU main control modules use model MPC8313 32 embedded microprocessors
Device, it which is provided with four serial ports and two Ethernet network interfaces.
In a specific embodiment, it also includes touch display screen, and the CPU main control modules are through a serial ports
It is connected with the touch display screen.
In a specific embodiment, the same period module is used based on model MK60DN512 32-bit microprocessor
Controller, it includes AC voltage sampling loop of the two-way with filter function, the passive 24V direct currents intake state-detection in four tunnels
The normally opened relay output loop of circuit and five tunnels with Phototube Coupling.
In a specific embodiment, the power module be used for by 220V exchange direct current be converted to+3.3V ,-
3.3V ,+12V, -12V ,+24V and -24V direct current, to meet the electricity consumption need of the CPU main control modules and the same period module
Ask.
It can be seen that the utility model proposes a kind of achievable hydroelectric power system or transformer station's inner breaker to switch the same period simultaneously
The PLC device of net closing operation, it can realize the synchronization paralleling to connecting breaker between unit and system, system and system
Operating function.
Compared with prior art, the PLC device provided by the utility model with simultaneous interconnecting function, it has following aobvious
Write advantage：1st, integrated level is high, and CPU master controllers, same period module and power module are integrated in same module subrack by it, real
The integration of PLC programmable functions and simultaneous interconnecting function is showed；2nd, the development cost of product is reduced, is particularly suitable for miniature water
Power power plant；3rd, can Configuration Online same period operational factor, the precision that measures the same period voltage and phase calibrate, and can be real
When check the running status of PLC device, facilitate field adjustable and test maintaining.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to this practicality
New limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.
Fig. 1 is the structural representation of the PLC device provided by the utility model with simultaneous interconnecting function in an embodiment；
Fig. 2 is the interface diagram of the CPU main control modules in Fig. 1；
Fig. 3 is the interface diagram of the power module in Fig. 1；
Fig. 4 is the interface diagram of the same period module in Fig. 1；
Fig. 5 is the operation principle schematic diagram of the PLC device with simultaneous interconnecting function in Fig. 1 embodiments.
Embodiment
It refer to shown in Fig. 1, it is in a specific embodiment, provided by the utility model with simultaneous interconnecting function
PLC device includes module subrack 1 and CAN plate 2, and the CAN plate 2 is arranged in the module subrack 1, the CAN
CAN is equipped with bus board 2.
One main control module socket 3, a power module socket 5 and six basic IO are installed on the CAN plate 2
Socket 4.The main control module socket 3, the basic IO sockets 4 and the power module socket 5 are realized through the CAN and led
Lead to and connect.
In the present embodiment, the main control module socket 3 is plugged with CPU main control modules 6, on six basic IO sockets 4
A same period module 7 is plugged with, power module 8 is plugged with the power module socket 5.Certainly, in other embodiments,
Two, three, four or five same period modules 7 of a grafting can also be selected, can be inserted on the basic IO sockets 4 being available
Other kinds of functional module is connect, to realize Function Extension.
It refer to shown in Fig. 2, in the present embodiment, the CPU main control modules 6 use model MPC8313 32 insertions
Microsever, it includes four serial ports 61 and two Ethernet network interfaces 62.
In the present embodiment, the CPU main control modules 6 are connected through a serial ports 61 with touch display screen (not shown),
To realize man-machine display function.The CPU main control modules 6 connect through an Ethernet network interface 62 and outside PC host computers
Connect, to realize to control of the present utility model and debugging.
The CPU main control modules 6 can realize that multitask real-time parallel is handled, and the function achieved by it includes processing number
According to, perform user program, with the data interaction of PC host computers, be the downloading-running parameter of same period module 7, issue control command to
Same period module 7, receive real time data that same period module 7 measures etc..
It refer to shown in Fig. 3, it illustrates the interface diagram of power module 8 described in the utility model.The power supply
Module 8 realize alternating current-direct current duplicate supply input, its 220V AC or DC electricity can be converted into+3.3V, -3.3V ,+12V, -
12V ,+24V and -24V direct current, to meet the power demand of the CPU main control modules 6 and the same period module 7.
Voltage conversion technology and specific photovoltaic conversion process are the ripe skill of this area used by power module 8
Art, it is not the scope of protection of the utility model yet, so this specification repeats no more.Persons skilled in the art can join
The definition of the interface shown in Fig. 3 and logical construction are examined to realize power module 8, the definition of other interfaces and logic knot can also be used
Structure realizes the power module 8, and the application is defined not to this.
It refer to shown in Fig. 4 and Fig. 5, in the present embodiment, the same period module 7 uses 32 of model MK60DN512
Microprocessor (MCU) is master controller, and it is passive that it includes AC voltage sampling loop, 4 tunnels of 2 road free band filter functions
The normally opened relay output loop of 24VDC intakes state detection circuit and 5 tunnels with Phototube Coupling.Wherein：The alternating voltage
Acquisition circuit is treated for realization and the voltage measurement of side (subject side) and system side and calculates phase, its voltage measurement scope
For 1.0V~130V.The intake state detection circuit be used for detection have pressure same period signal open into, without pressure same period signal open into,
Revocation/reset command and breaker closing signal, it is accessed with Phototube Coupling, can be effectively isolated the forceful electric power interference at scene.It is described
Normally opened relay output loop is used to realize close a floodgate output, voltage and frequency regulation pulse output.
Each same period module 7 included by the utility model can control a killer switch, by gathering, surveying
Real-time voltage, frequency and the phase of breaker closing switch both sides are measured, the same period module 7 can implement function such as：(1) it is, same
Under phase starting state, the same period module 7 calculates pressure difference, frequency difference and phase difference, and processing same period logical condition judges, automatic to carry out
Voltage, frequency regulation output, predict the asynchronous switch-on moment, carry previous leading time and send energization control signal, and by logical
Interrogate bus and the interaction data of CPU main control modules 6；(2) when, electricity or reset are run on CPU main control modules 6, the same period mould
Part 7 can receive the same period parameters that the CPU main control modules 6 issue；(3), in the normal operation of CPU main control modules 6, the same period
Module 7 transmits real-time measuring data to the communication bus, can conveniently be checked by the touch display screen of the present utility model
The real time execution situation of PLC device.
Please continue to refer to shown in Fig. 5, the operation principle for the PLC device with simultaneous interconnecting function that the present embodiment provides and
Implementation procedure is as follows：
(1) voltage, frequency, phase calculation.19/20 interface measurement combined floodgate breaker treats simultaneously side voltage on same period module 7,
21/22 interface measurement combined floodgate circuit breaker system side voltage, two voltage acquisition circuit independences, are provided with filtering process and PT turns
Change.The voltage signal handled after changing is delivered to the ADC channel of the master controller of same period module 7, through ADC sample conversions and Fu's formula
Calculate, obtain real-time voltage value.The voltage signal after changing will be handled through comparing amplifier processing, low and high level signal is obtained, send
To the PORT pins of the master controller of same period module 7, configure two pins and trigger interrupt mode for rising edge, each interrupting
Rising edge elapsed time twice in succession is calculated in process, and interrupts the TIMER counter values at moment.During according to passing through
Between calculate cycle and the frequency of both sides alternating voltage, calculate phase frequency difference value, i.e. phase according to two passage TIMER count difference values
Angular difference.
(2) open into state-detection.The passive 24VDC intakes state detection circuit in 4 tunnels of same period module 7 (has the pressure same period to open
Move, start without the pressure same period, same period revocation reset command, breaker closing auxiliary contact) switching signal is sent by light-coupled isolation
To each PORT mouths of the master controller of same period module 7, the tunnel of master controller inspection 4 of same period module 7 is opened into division state.
(3) have pressure/without pressure the same period order check.When the state for having pressure same period enabling signal is changed into " 1 " from " 0 ", it is believed that
There is pressure asynchronous switch-on order to need to perform；When being changed into " 1 " from " 0 " without pressure same period enabling signal, it is believed that whether there is pressure same period conjunction
Lock order needs to perform.Both are opened into state while only allow have a signal effective.No matter which kind of order under, when stateful
Open fashionable for the revocation/involution of " 1 ", same period deterministic process terminates, and calculating returns to original state.
(4) same period condition and logic judgment.When having pressure same period startup, it is desirable to treat and there is voltage side with system side.Work as pressure
When difference or frequency difference are excessive, the master controller of same period module 7 is according to the frequency modulation cycle in same period parameters or pressure regulation periodic intervals
To send excitation or voltage-regulating system of the regulation pulse signal to power plant, the width of pulse signal depends on the big of pressure difference or frequency difference
It is small, until when actual pressure differential and frequency difference all meet same period condition, stop regulation, then come in advance according to leading time in period parameters
Survey and catch asynchronous switch-on angle, the lead angle moment that prediction is reached in phase angle difference sends combined floodgate order.When starting without the pressure same period,
For line type same period object, arbitrarily there is side to be maintained at no-voltage condition, for Set Type same period object, be maintained at generator terminal side
When motor has electrical voltage system side no-voltage condition, you can send combined floodgate order.
(5) switching signal is pulse signal, and the retention time is leading time+100ms, recovers normally open.
(6) whenever, when having revocation/involution order, all same periods check and judge to stop immediately.
(7) in without same period implementation procedure, systems inspection will survey to when having corrective command according to normal conditions, i.e. object
There is equal state with system side, voltage is rated value 100V, frequency 50Hz/60Hz, phase difference are 0 to be corrected.
It can be seen that the utility model proposes a kind of PLC device of achievable killer switch simultaneous interconnecting closing operation, its
It can realize and the simultaneous interconnecting that breaker is connected between unit and system, system and system is operated.
More than, only it is preferred embodiment of the present utility model, not makees any formal limit to the utility model
System, any simple modification, equivalent change and modification made according to the technical essence of the utility model to above example, still
Belong in the range of technical solutions of the utility model.
Claims (6)
- A kind of 1. PLC device with simultaneous interconnecting function, it is characterised in that including：The module subrack of CAN plate is installed,CAN and the main control module socket being connected in the CAN, power module are provided with the CAN plate Socket and several basic IO sockets, wherein：CPU main control modules are plugged with the main control module socket, are plugged with respectively on all or part of basic IO sockets Same period module, power module is plugged with the power module socket.
- 2. there is the PLC device of simultaneous interconnecting function as claimed in claim 1, it is characterised in that set on the CAN plate Six basic IO sockets are equipped with, wherein, the same period module is plugged with respectively on six basic IO sockets.
- 3. there is the PLC device of simultaneous interconnecting function as claimed in claim 1, it is characterised in that the CPU main control modules are adopted With model MPC8313 32 embedded microprocessors, four serial ports and two Ethernet network interfaces are which is provided with.
- 4. there is the PLC device of simultaneous interconnecting function as claimed in claim 3, it is characterised in that the PLC device also includes There is touch display screen, the CPU main control modules are connected through a serial ports with the touch display screen.
- 5. there is the PLC device of simultaneous interconnecting function as claimed in claim 1, it is characterised in that the same period module uses Model MK60DN512 32-bit microprocessor is master controller, and the same period module includes friendship of the two-way with filter function Flow voltage acquisition circuit, the passive 24V direct currents intake state detection circuit in four tunnels and normally opened relay of five tunnels with Phototube Coupling Output loop.
- 6. there is the PLC device of simultaneous interconnecting function as claimed in claim 1, it is characterised in that the power module is used for By 220V exchange direct current be converted to+3.3V, -3.3V ,+12V, -12V ,+24V and -24V direct current, with described in satisfaction The power demand of CPU main control modules and the same period module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720376419.6U CN206696686U (en) | 2017-04-11 | 2017-04-11 | A kind of PLC device with simultaneous interconnecting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720376419.6U CN206696686U (en) | 2017-04-11 | 2017-04-11 | A kind of PLC device with simultaneous interconnecting function |
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| Publication Number | Publication Date |
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| CN206696686U true CN206696686U (en) | 2017-12-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110658376A (en) * | 2019-10-09 | 2020-01-07 | 国网江苏省电力有限公司 | Measurement and analysis method and system for distribution network line closed loop operation based on edge calculation |
| CN113075902A (en) * | 2020-05-18 | 2021-07-06 | 格联(上海)物联技术有限公司 | PLC data acquisition device |
-
2017
- 2017-04-11 CN CN201720376419.6U patent/CN206696686U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110658376A (en) * | 2019-10-09 | 2020-01-07 | 国网江苏省电力有限公司 | Measurement and analysis method and system for distribution network line closed loop operation based on edge calculation |
| CN110658376B (en) * | 2019-10-09 | 2022-09-23 | 国网江苏省电力有限公司 | Measurement and analysis method and system for distribution network line closed loop operation based on edge calculation |
| CN113075902A (en) * | 2020-05-18 | 2021-07-06 | 格联(上海)物联技术有限公司 | PLC data acquisition device |
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