CN104852466A - Distribution network automation terminal - Google Patents
Distribution network automation terminal Download PDFInfo
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- CN104852466A CN104852466A CN201510182452.0A CN201510182452A CN104852466A CN 104852466 A CN104852466 A CN 104852466A CN 201510182452 A CN201510182452 A CN 201510182452A CN 104852466 A CN104852466 A CN 104852466A
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Abstract
The invention discloses a distribution network automation terminal. Each functional unit is provided with a CPU. Each CPU firstly organizes, analyzes, and stores original data of the unit, and then the data is sent to a core processing unit through a communication bus, and the CPU receives data of the core processing unit and controls execution action, preventing the core processing unit from collecting the original data of each functional unit, and improving reaction speed of the core processing unit. Each CPU is connected with the core processing unit through the communication bus, so that the number of system signal lines is reduced, mutual interference of the signal lines is reduced, and system anti-interference capability is enhanced. Each functional unit communicates with the core processing unit through double networks. When a main communication network has faults, a standby communication network is started immediately, so that anti-fault communication capability of the system is improved. Each functional unit is provided with a ferroelectric storage, so as to independently store data and SOE events, and the data and the SOE events are not lost in power-off. Each CPU automatically identifies the address coding of a bus board, so that whole system wiring is concise. The distribution network automation terminal simplifies design and saves cost.
Description
Technical field
The present invention relates to distribution automation technical field, in particular a kind of distribution automation terminal.
Background technology
Existing distribution automation terminal comprises a master controller and multiple functional unit, and same functional unit (as analog acquisition unit) may arrange multiple simultaneously, each functional unit must be connected with master controller, the information feed back collected to master controller or the order performing master controller.But because the functional unit in distribution automation terminal is numerous, master controller directly must carry out information or output command to each functional unit, the work disposal amount of master controller is very large, has a strong impact on the reaction efficiency of master controller; And each functional unit is connected by holding wire with master controller, signal line linking line quantity is various, self also can disturb other holding wires while every root holding wire is disturbed by other holding wires, cause the poor anti jamming capability of whole system, have a strong impact on the operation accuracy of system.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The object of the present invention is to provide a kind of distribution automation terminal, be intended to solve existing distribution automation terminal master controller work disposal amount large, reaction efficiency is slow, functional unit and master controller signal line linking line quantity various, system rejection to disturbance ability, influential system runs the problem of accuracy.
Technical scheme of the present invention is as follows:
A kind of distribution automation terminal, comprise bus board, power subsystem, core processing and externally communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit, described power subsystem, core processing and externally communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit are arranged on the functional unit interface of bus board respectively, wherein, described man-machine interaction unit, On-off signal unit, analog acquisition unit and the equal separate configurations of switch amount output unit arrange respective initial data, analyze and the CPU stored, core processing and externally communication unit realize communication with the CPU of each functional unit and are connected, the CPU joined in each functional unit is issued to core processing and external communication unit self initial data, accept the data of core processing and external communication unit simultaneously, and perform corresponding actions.
Described distribution automation terminal, wherein, the functional unit interface on described bus board solidifies different geocodings, the automatic identification address of CPU of joining in it after each functional unit is arranged on functional unit interface.
Described distribution automation terminal, wherein, described bus board is integrated with communication bus, and described core processing and externally communication unit realize double-network communication by communication bus with the CPU of each functional unit and be connected.
Described distribution automation terminal, wherein, described bus board is integrated with power bus, power subsystem is connected, for each functional unit provides power supply with core processing and external communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit by power bus.
Described distribution automation terminal, wherein, described man-machine interaction unit, On-off signal unit, analog acquisition unit and the equal separate configurations of switch amount output unit have the ferroelectric memory stored in setting-up time respective initial data, and described ferroelectric memory is connected with the interior CPU joined.
Described distribution automation terminal, wherein, all being equipped in described core processing and externally communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit makes each functional unit realize charged hot-swappable plug-and-play circuit, and described plug-and-play circuit is connected with the CPU in each functional unit and power bus respectively.
Described distribution automation terminal, wherein, is equipped with the high accuracy instrument transformer making analog acquisition avoid calibrating debugging in described analog acquisition unit.
Described distribution automation terminal, wherein, described power subsystem, core processing and external communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit are arranged on the functional unit interface of bus board respectively by Europlug.
Described distribution automation terminal, wherein, the functional unit interface on described bus board adopts the design that misplaces up and down.
Described distribution automation terminal, wherein, described man-machine interaction unit is provided with liquid crystal display district, LED viewing area and key zone, described liquid crystal display district, LED viewing area are all connected with the CPU joined in man-machine interaction unit with key zone, by CPU control action.
Beneficial effect of the present invention: the present invention is by providing a kind of distribution automation terminal, high-performance CPU is joined in each functional unit is equal, the CPU of each functional unit first arranges the initial data of this unit, analyze and store, again by inner double-network communication bus incoming communication system, the data distributing of each functional unit to core processing unit, accept the data of core processing unit simultaneously, and controlling functions unit performs corresponding actions, the initial data of core processing unit to each functional unit is avoided to collect, improve the reaction speed of core processing unit, each functional unit CPU is connected with core processing unit communication by communication bus, greatly reduces the holding wire quantity of whole system, reduces interfering with each other between holding wire, enhance the antijamming capability of whole system, each functional unit and the inner double-network communication of core processing unit, a main communication network, a communication network for subsequent use, enables communication network for subsequent use when main communication network breaks down at once, improves system fault-resistant ability to communicate, each functional unit all configures Large Copacity ferroelectric memory, and preserve data, SOE, event etc. are independent, power down is not lost, geocoding on the automatic identification bus plate of CPU that each functional unit is joined in utilizing, realize address self adaptation, make often kind of functional unit general, simplified design, saves production cost simultaneously, each functional unit sets up data exchange channel by double-network communication, and make the distribution network of whole distribution automation terminal more succinct, the volume of whole distribution automation terminal can do less, meets the instructions for use of various occasion.
Accompanying drawing explanation
Fig. 1 is the functional unit connection diagram of distribution automation terminal in the present invention.
Fig. 2 is power subsystem and bus board connection diagram in the present invention.
Fig. 3 is core processing and externally communication unit and bus board connection diagram in the present invention.
Fig. 4 is man-machine interaction unit and bus board connection diagram in the present invention.
Fig. 5 is breaker in middle amount input unit of the present invention and bus board connection diagram.
Fig. 6 is analog acquisition unit and bus board connection diagram in the present invention.
Fig. 7 is breaker in middle amount output unit of the present invention and bus board connection diagram.
Embodiment
For making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.
As shown in Figure 1, this distribution automation terminal comprises bus board, power subsystem, core processing and external communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit, described bus board is provided with multiple functional unit interface, functional unit interface solidifies different geocodings, for the automatic identification address of each functional unit, described bus board is also integrated with communication bus and power bus, described power subsystem, core processing and external communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit are arranged on the functional unit interface of bus board respectively, power subsystem is connected, for each functional unit provides power supply with core processing and external communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit by power bus, described man-machine interaction unit, On-off signal unit, analog acquisition unit and the equal separate configurations CPU of switch amount output unit, core processing and externally communication unit realize double-network communication by communication bus with the CPU of each functional unit and are connected: man-machine interaction unit, On-off signal unit, after analog acquisition unit and switch amount output unit are arranged on corresponding functional unit interface, the geocoding of the CPU automatic identification function unit interface place solidification of joining in it, again geocoding is transferred to core processing and external communication unit, core processing and externally communication unit are according to this geocoding and the accurate communication of each functional unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit arrange, analyze and store respective initial data, by the interior CPU joined, initial data is issued to core processing and external communication unit, accept the data of core processing and external communication unit simultaneously, and perform corresponding actions.
Each functional unit realizes double-network communication with core processing and external communication unit by communication bus and is connected, power subsystem is then by power bus and core processing and external communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit is connected with switch amount output unit provides power supply, like this, by at man-machine interaction unit, On-off signal unit, separate configurations CPU in analog acquisition unit and switch amount output unit, utilize the setting of communication bus and power bus, avoid each functional unit to be directly connected with core processing and external communication unit signal, greatly reduce the holding wire quantity of whole system, reduce interfering with each other between holding wire, enhance the antijamming capability of whole system, and the CPU joined in each functional unit first arranges the initial data in respective functional unit, analyzes and store, again initial data is issued to core processing and external communication unit, doing so avoids core processing and externally the initial data of communication unit to each functional module collect, improve the treatment effeciency of core processing and external communication unit, geocoding on the automatic identification bus plate of CPU that each functional unit is joined in utilizing, realizes address self adaptation, makes the distribution network of whole distribution automation terminal more succinct, each functional unit and the inner double-network communication of core processing unit, a main communication network, a communication network for subsequent use, enables communication network for subsequent use when main communication network breaks down at once, improves system fault-resistant ability to communicate.
Wherein, described man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit are all configured with Large Copacity ferroelectric memory, described ferroelectric memory is connected with the interior CPU joined: man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit arrange, analyze and store respective initial data, by the interior CPU joined, initial data is issued to core processing and external communication unit, accept the data of core processing and external communication unit simultaneously, and perform corresponding actions; The Large Copacity ferroelectric memory of each functional unit is preserved separately to data such as data, SOE, events, power down is not lost, certain hour (this storage time can establish) is stored to initial data, like this, need to change even if core processing and externally communication unit break down, be kept at interior data all to lose, as long as the initial data be stored in each functional unit ferroelectric memory is taken out, complete data integrity docking, core processing and externally communication unit, just Data-Link again seamless foundation, reduce to minimum the impact of the system failure.
In order to avoid a certain functional unit break down time, whole distribution automation terminal must be closed, fault functional unit pull-out maintenance or could change, have a strong impact on the operation of whole system, described core processing and externally communication unit, man-machine interaction unit, On-off signal unit, all plug-and-play circuit is equipped with in analog acquisition unit and switch amount output unit, described plug-and-play circuit is connected with the CPU in each functional unit and power bus, like this, when changing a certain fault functional unit, whole distribution automation terminal still can normally run, the impact of the system failure is reduced to minimum.
Be equipped with high accuracy instrument transformer in described analog acquisition unit, described high accuracy instrument transformer make analog acquisition unit obtain analog acquisition avoid calibration debugging.
In the present embodiment, described power subsystem, core processing and external communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit are arranged on the functional unit interface of bus board respectively by Europlug.Functional unit interface on bus board adopts the design that misplaces up and down, prevents functional unit wrong plug position.
Conveniently distribution automation is controlled, described man-machine interaction unit is provided with liquid crystal display district, LED viewing area and key zone, described liquid crystal display district, LED viewing area are all connected with the CPU joined in man-machine interaction unit with key zone, by CPU control action.
Each functional unit division of labor of this distribution automation is clear and definite:
1. power subsystem (as shown in Figure 2): inside establish overcurrent protection, when power supply input break down time, can protection power source unit not damaged; High strength anti-interference process is carried out to input power, suppresses the harm of surge and low-and high-frequency pulse signal; Step-down is carried out to the power supply of input; dividing potential drop exports; the power supply of output is made to be applicable to distribution automation terminal; simultaneously to distribution automation terminal output short-circuit, overcurrent, overheat protector; power supply after filtering, after voltage stabilizing process is delivered on the power bus of bus board, for whole distribution automation terminal provide totally, stablize, power supply reliably.
2. core processing and externally communication unit (as shown in Figure 3): gather 8 way switch amount inputs, resolution can reach 1ms, generates SOE event information, and arrange as initial data stores; Possess the process of switch acquisition stabilization, the stabilization time can establish; Automatic identification bus plate geocoding, sets up system communication system by inner double-network communication bus; Collect the initial data of other functional units, arrange, analyze and store; After Logic judgment, analysis, issue data to other functional units; When carrying out system school; Can realize charged hot-swappable; Configure 2 tunnels independently ethernet communication interface, 1 road RS485 communication interface, 1 road RS232 communication interface, provides the various communications protocols such as MODBUS RTU, IEC60870-5-101,00003-IEC60870-5-104, DNP3.0.
3. man-machine interaction unit (as shown in Figure 4): identification bus plate geocoding automatically, by inner double-network communication bus connecting system communication system; Arrange, analyze and the initial data of memory module; Issue data to core processing module; Accept the data of core processing module, and perform corresponding actions; Can realize charged hot-swappable.
4. switch acquisition unit (as shown in Figure 5): gather 36 way switch amount inputs, resolution reaches 1ms, generates SOE event information, and arrange as initial data stores; The process of switch acquisition stabilization, the stabilization time can establish; Automatic identification bus plate geocoding, by inner double-network communication bus connecting system communication system; Arrange, analyze and the initial data of memory module; Issue data to core processing module; Accept the data of core processing module; Can realize charged hot-swappable.
5. analog acquisition unit (as shown in Figure 6): gather 1 road 4-20mA direct current, precision reaches 2 ‰; Gather 1 road 0-60V direct voltage, precision reaches 2 ‰; Gather 9 road 0-6A alternating currents, precision reaches 2 ‰; Gather 3 road 0-120V alternating voltages, precision reaches 2 ‰; Automatic identification bus plate geocoding, by inner double-network communication bus connecting system communication system; Arrange, analyze and the initial data of memory module; Issue data to core processing module; Accept the data of core processing module; Calculate meritorious and the multiple electricity such as reactive power, power factor, and arrange as initial data stores; Three-step charging, inverse time current protection (three kinds of curves), two-part zero-sequence current protection, all protections generate SOE event information, and arrange as initial data stores; All Protection parameters all have anti-correction process, and when namely this analog acquisition unit powers on, Protection parameters compares with the corresponding stored data of core processing and external communication unit, if inconsistent, and warning reminding; Can realize charged hot-swappable.
6. switch amount output unit (as shown in Figure 7): provide No. 12 relay idle contacts to export, export maximum switch current and reach 31A, capacity reaches 7750VA, and dielectric withstanding voltage reaches 2500V1min between getting an electric shock; Automatic identification bus plate geocoding, by inner double-network communication bus connecting system communication system; Arrange, analyze and the initial data of memory module; Issue data to core processing module; Accept the data of core processing module, and perform corresponding actions; Relay power two-step evolution, prevents malfunction; Confirming operation two-step evolution, prevents malfunction; Can realize charged hot-swappable.
Each functional unit division of labor of this whole distribution automation terminal is clear and definite, and distribution network is succinct, and the volume of whole distribution automation terminal can do less, meets the instructions for use of various occasion.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to claims of the present invention.
Claims (10)
1. a distribution automation terminal, comprise bus board, power subsystem, core processing and externally communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit, described power subsystem, core processing and externally communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit are arranged on the functional unit interface of bus board respectively, it is characterized in that, described man-machine interaction unit, On-off signal unit, analog acquisition unit and the equal separate configurations of switch amount output unit arrange respective initial data, analyze and the CPU stored, core processing and externally communication unit realize communication with the CPU of each functional unit and are connected, the CPU joined in each functional unit is issued to core processing and external communication unit self initial data, accept the data of core processing and external communication unit simultaneously, and perform corresponding actions.
2. distribution automation terminal according to claim 1, is characterized in that, the functional unit interface on described bus board solidifies different geocodings, the automatic identification address of CPU of joining in it after each functional unit is arranged on functional unit interface.
3. distribution automation terminal according to claim 1, is characterized in that, described bus board is integrated with communication bus, and described core processing and externally communication unit realize double-network communication by communication bus with the CPU of each functional unit and be connected.
4. distribution automation terminal according to claim 1, it is characterized in that, described bus board is integrated with power bus, power subsystem is connected, for each functional unit provides power supply with core processing and external communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit by power bus.
5. distribution automation terminal according to claim 1, it is characterized in that, described man-machine interaction unit, On-off signal unit, analog acquisition unit and the equal separate configurations of switch amount output unit have the ferroelectric memory stored in setting-up time respective initial data, and described ferroelectric memory is connected with the interior CPU joined.
6. distribution automation terminal according to claim 1, it is characterized in that, all being equipped in described core processing and externally communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit makes each functional unit realize charged hot-swappable plug-and-play circuit, and described plug-and-play circuit is connected with the CPU in each functional unit and power bus respectively.
7. distribution automation terminal according to claim 1, is characterized in that, is equipped with the high accuracy instrument transformer making analog acquisition avoid calibrating debugging in described analog acquisition unit.
8. distribution automation terminal according to claim 1, it is characterized in that, described power subsystem, core processing and external communication unit, man-machine interaction unit, On-off signal unit, analog acquisition unit and switch amount output unit are arranged on the functional unit interface of bus board respectively by Europlug.
9. distribution automation terminal according to claim 8, is characterized in that, the functional unit interface on described bus board adopts the design that misplaces up and down.
10. distribution automation terminal according to claim 1, it is characterized in that, described man-machine interaction unit is provided with liquid crystal display district, LED viewing area and key zone, described liquid crystal display district, LED viewing area are all connected with the CPU joined in man-machine interaction unit with key zone, by CPU control action.
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| CN106598902A (en) * | 2016-12-09 | 2017-04-26 | 积成电子股份有限公司 | CPU (Central Processing Unit) control board capable of realizing hot plug of board card and implementation method thereof |
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