CN202453723U - DCS of solar photovoltaic power station - Google Patents

DCS of solar photovoltaic power station Download PDF

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Publication number
CN202453723U
CN202453723U CN2012200427253U CN201220042725U CN202453723U CN 202453723 U CN202453723 U CN 202453723U CN 2012200427253 U CN2012200427253 U CN 2012200427253U CN 201220042725 U CN201220042725 U CN 201220042725U CN 202453723 U CN202453723 U CN 202453723U
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China
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control unit
array
management
power station
dcs
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CN2012200427253U
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Chinese (zh)
Inventor
黄忠
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四川钟顺太阳能开发有限公司
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
    • Y02P90/14
    • Y02P90/18

Abstract

The utility model discloses a distributed control system (DCS) of a solar photovoltaic power station, which comprises a field control layer, an array control layer, a main control layer and a management layer, wherein the field control layer comprises a tracking controller, a header box, an inverter, a booster transformer and a meteorological station; the array control layer comprises an array controller and a 485 line concentrator; the main control layer comprises a region server, LINK and a 485 line concentrator; and the management layer is composed of a field management system and a remote management system and is used for receiving signals transmitted from the main control layer and conducting full-automatic monitoring management of the equipment of the entire power station. The distributed control system disclosed by the utility model can effectively improve the stability, expandability and easiness of maintenance, monitoring and management or a large-sized tracking type photovoltaic power station from network structure, control concept to modern management manner, and is significant for promoting the construction of large-sized tracking type photovoltaic power stations, especially condensation photovoltaic power stations.

Description

Solar photovoltaic power plant DCS Distributed Control System (DCS)

Technical field

The utility model relates to photovoltaic plant control system technical field, particularly a kind of solar photovoltaic power plant DCS Distributed Control System (DCS).

Background technology

Current, China's photovoltaic plant construction be in the demonstrative project construction period in extensive transitional period stage of popularization, relatively weaker on the large-scale photovoltaic power station monitoring management system.And photovoltaic plant usually remote, have inconvenient traffic, lower robotization, information system management level are for bringing many difficulties in the aspect that administers and maintains in power station.Unit control model or master slave mode are mainly adopted in existing tracing type photovoltaic power station, and majority is based on the control solution of PLC.

Field bus technique through adopting the communications control mode of full dispersion, total digitalization, two-way multiple spot, has remarkable advantage at aspects such as real-time, reliability, maintainability, realization property.The application of fieldbus in photovoltaic plant is less, and idol has that to represent also be that it is transplanted to the photovoltaic field by force, does not develop network structure and equipment targetedly to this field.Because aspects such as cost, stability, system reliability, expansibilities, the control model in existing tracing type photovoltaic power station can't satisfy the needs of large-scale tracing type photovoltaic power plant construction.In the tracing type photovoltaic power station, the application in the collecting and distributing control in particularly large-scale tracing type photovoltaic power station still is in the desk study stage.

The utility model content

The goal of the invention of the utility model is: to the problem of above-mentioned existence; A kind of photovoltaic plant intelligent monitoring management system that is applicable to diversified tracing type photovoltaic generating set is provided; Can form dissimilar tracing type photovoltaic generator such as tracking plane, tracing collection, uniaxiality tracking, double-axis tracking, different scales carries out effectively unified monitoring, decentralised control and diversified telemanagement from net/parallel networking type photovoltaic power station.

The technical scheme of the utility model is achieved in that solar photovoltaic power plant DCS Distributed Control System (DCS), it is characterized in that: comprise field control layer, array key-course, master control layer and administration and supervision authorities;

Said field control layer comprises tracking control unit, header box, inverter, step-up transformer and the weather station that is used to drive the photovoltaic module aligning sun, and the tracking control unit of same type machine perhaps has the tracking control unit of common trait to constitute an array;

Said array key-course comprises array control unit and 485 hubs; Each array of being made up of solar photovoltaic assembly connects with corresponding array control unit through the RS485 bus; Said array control unit is connected with 485 hubs through the RS485 bus, and said header box, inverter, step-up transformer and weather station connect with another corresponding 485 hub through the RS485 bus respectively;

Said master control layer comprises region server and LINK; Said array control unit is connected with region server through 485 corresponding hubs, and UTC time and longitude and latitude come time synchronized and information inquiry and control are carried out in the tracking control unit time service in whole zone said region server accurately through obtaining GPS;

Said administration and supervision authorities are made up of field management system and long-distance management system, are used to receive the signal of master control layer transmission, and the equipment in whole power station is carried out full-automatic monitoring management.

The described solar photovoltaic power plant DCS of the utility model Distributed Control System (DCS), its said region server, array control unit, LINK, tracking control unit be have autonomous intelligence automatically control based on ARM+RTOS Embedded System Structure.

The described solar photovoltaic power plant DCS of the utility model Distributed Control System (DCS), they are in administration and supervision authorities, and said field management system is used for whole power station All Ranges server, weather station, tracking control unit, header box, inverter are carried out full-automatic monitoring management; Said long-distance management system comprises long-range monitoring power station and mobile monitor.

The described solar photovoltaic power plant DCS of the utility model Distributed Control System (DCS); It is in long-distance management system; Said long-range monitoring power station is realized whole power station all devices is monitored and managed through INTERNET, and said mobile monitor is realized whole power station all devices is monitored and managed through GPRS.

The utility model is based on the theory of field tracking device type and decentralised control centralized management is carried out area dividing to the large-sized photovoltaic power station; Zone and zone isolation; Array and array are isolated in the zone; Tracking control unit and the separate operation of tracking control unit in the array; Such division makes expansion, maintenance or one of them zone of power station inner region break down can not influence other regional operations; The expansion of array in regional, maintenance or one of them array break down and can not influence the operation of other arrays in the one's respective area, and the expansion of tracking control unit in the array, maintenance or one of them tracking control unit break down can not influence the operation of interior other tracking control units of this array.The control in zone is the basis based on easy to operate, easy care, the simple design concept of control then, can realize the time synchronized of on-the-spot all devices through the mode of time service; Mode through broadcasting realizes that on-the-spot all devices entering is windproof, the snow defence state; Through can successively finding each equipment of field control layer to operate separately to the addressing of network node.Divide for field management and telemanagement two big modules at management aspect; And be divided into two kinds of different patterns of internet and GPRS for telemanagement; The telemanagement that adds the GPRS pattern can realize mobile management and maintenance anywhere or anytime; Let the power plant maintenance slip-stick artist can understand the running status in power station anywhere or anytime, compare with the management in traditional power station and can save lot of manpower and material resources and can obviously raise the efficiency.Can both effectively promote large-scale tracing type photovoltaic power station stability, extensibility, easy care, be prone to the monitoring ease of manageability no matter native system is structure or control theory and the modern way to manage of network, to promote extensive tracing type photovoltaic power station especially the construction in condensation photovoltaic power station positive effect is arranged.

Description of drawings

Fig. 1 is one of them regional system architecture synoptic diagram of the utility model.

Fig. 2 is the system architecture synoptic diagram of the utility model.

Embodiment

Below in conjunction with accompanying drawing, the utility model is done detailed explanation.

For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

As illustrated in fig. 1 and 2, a kind of solar photovoltaic power plant DCS Distributed Control System (DCS) comprises field control layer, array key-course, master control layer and administration and supervision authorities.

Said field control layer comprises several tracking control units, inverter, header box, step-up transformer and weather station; The tracking control unit of same type machine perhaps has the tracking control unit of common trait to constitute an array; Wherein, Said tracking control unit adopts the processor of ARM architecture, has the functional module of the moving control of commercial Application and professional motor, with system control moduleization; Simplified the control system one-piece construction, the stabilizability that has improved control system with reduced development difficulty and shortened the construction cycle.

Said array key-course comprises array control unit and 485 hubs; Each array of being made up of solar photovoltaic assembly connects with corresponding array control unit through the RS485 bus; Said array control unit is connected with 485 hubs through the RS485 bus, and said header box, inverter, step-up transformer and weather station connect with another corresponding 485 hub through the RS485 bus respectively.

Said master control layer comprises region server, 485 hubs and LINK; Said array control unit is connected with region server through 485 corresponding hubs; UTC time and longitude and latitude come time synchronized and information inquiry and control are carried out in the tracking control unit time service in whole zone said region server accurately through obtaining GPS; Communication protocols such as said LINK integrated inverse device, header box, weather station; These device data acquisition management are uploaded to upper layer network again, wherein, said region server, array control unit and LINK be have autonomous intelligence automatically control based on ARM+RTOS Embedded System Structure.Said region server core is time dissemination system and administration module.Wherein time dissemination system is responsible at official hour the tracking control unit under it being carried out time service, time synchronized; Administration module is the warning message that makes progress of unified management and downward control command then; Because whole power station is to divide according to the Planning Model of section; So every region server also has the unique sign address in the power station, in the whole power station region server address=himself sign address.Said array control unit is core with the management, connects upper strata and management lower floor.Array control unit is the most directly supvr of solar energy tracking controller; In like manner; Every array row controller has unique sign address below region server, in whole power station, and array control unit address under the address of array control unit=region server address+this server.Said 485 hubs have very important network characteristic; It can be independent with each array control unit; On hardware, accomplish light-coupled isolation, can not be delivered to other arrays when dangerous like this and fault produces on some arrays, also can not have influence on upper system simultaneously.The mode that adopts many 485 hubs to be connected in series can be expanded the capacity of whole region server greatly.

Said administration and supervision authorities comprise field management system and long-distance management system.Wherein the major function of field management system is with the fastest recently mode the ruuning situation in whole power station to be monitored.Field management system can be simple and fast all devices to whole power station control, the inquiry.When noting abnormalities, carry out different classes of warning according to unusual seriousness; Long-distance management system comprises the management and the monitoring of internet and GPRS network.Internet is connected to preservation and the demonstration that enterprise's director server carries out data, and GPRS network then can be realized monitoring anywhere or anytime.Field management system finding can to send warning message to enterprise headquarters and senior engineer respectively behind higher level unusual the power plant project teacher can be gone and found out what's going on and then express-analysis and proposition solution in the very first time.

The control method of a kind of solar photovoltaic power plant DCS of the utility model Distributed Control System (DCS) is:

A), region server is obtained the current UTC time and local latitude and longitude information is carried out time synchronized to each array from GPS;

B), region server adopts high-performance CPU with the CORTEX-M3 kernel as the control core, and each array is carried out information inquiry and important control;

C), the field tracking controller after time synchronized, calculate sun current location according to real-time time and latitude and longitude information according to the horizontal system of coordinates, drive motor is followed the tracks of.

At the scene in the key-course; Real-time collection site parameters in weather station and equipment such as inverter and header box insert the LINK of master control layer through the MODBUS agreement; And be transmitted through the fiber to administration and supervision authorities via 485 hubs of master control layer, by the environment and the ruuning situation in the whole power station of the clear displaying of field management system.

In administration and supervision authorities, the Management System Data source is divided into initiatively visit and uploads dual mode automatically; Said active query mode is a upper layer software (applications) to the visit of every the tracking control unit in one's respective area all is to obtain through address lookup; When upper layer software (applications) need be visited certain or certain array apparatus; Need provide this equipment address accurately, and device address=region server address+array control unit address+tracking control unit address.Tracking control unit can in time be replied after receiving orders; Said upload automatically mode be tracking control unit spontaneous to the upper strata Data transmission; Tracking control unit need add the address of oneself during transmission; Array control unit need add the address of array control unit again and then data uploaded again after receiving; Region server sends the address interpolation of region server oneself after receiving again, and administration and supervision authorities are just known the accurate source of these data after receiving final data then.

The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.

Claims (4)

1. solar photovoltaic power plant DCS Distributed Control System (DCS) is characterized in that: comprise field control layer, array key-course, master control layer and administration and supervision authorities;
Said field control layer comprises tracking control unit, header box, inverter, step-up transformer and the weather station that is used to drive the photovoltaic module aligning sun, and the tracking control unit of same type machine perhaps has the tracking control unit of common trait to constitute an array;
Said array key-course comprises array control unit and 485 hubs; Each array of being made up of solar photovoltaic assembly connects with corresponding array control unit through the RS485 bus; Said array control unit is connected with 485 hubs through the RS485 bus, and said header box, inverter, step-up transformer and weather station connect with another corresponding 485 hub through the RS485 bus respectively;
Said master control layer comprises region server and LINK; Said array control unit is connected with region server through 485 corresponding hubs, and UTC time and longitude and latitude come time synchronized and information inquiry and control are carried out in the tracking control unit time service in whole zone said region server accurately through obtaining GPS;
Said administration and supervision authorities are made up of field management system and long-distance management system, are used to receive the signal of master control layer transmission, and the equipment in whole power station is carried out full-automatic monitoring management.
2. solar photovoltaic power plant DCS Distributed Control System (DCS) according to claim 1 is characterized in that: said region server, array control unit, LINK, tracking control unit be have autonomous intelligence automatically control based on ARM+RTOS Embedded System Structure.
3. solar photovoltaic power plant DCS Distributed Control System (DCS) according to claim 2; It is characterized in that: in administration and supervision authorities, said field management system is used for whole power station All Ranges server, weather station, tracking control unit, header box, inverter are carried out full-automatic monitoring management; Said long-distance management system comprises long-range monitoring power station and mobile monitor.
4. solar photovoltaic power plant DCS Distributed Control System (DCS) according to claim 3; It is characterized in that: in long-distance management system; Said long-range monitoring power station is realized whole power station all devices is monitored and managed through INTERNET, and said mobile monitor is realized whole power station all devices is monitored and managed through GPRS.
CN2012200427253U 2012-02-10 2012-02-10 DCS of solar photovoltaic power station CN202453723U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102541031A (en) * 2012-02-10 2012-07-04 四川钟顺太阳能开发有限公司 Fieldbus-based large tracking photovoltaic plant distributed control system and control method thereof
CN103235221A (en) * 2013-04-18 2013-08-07 河海大学常州校区 Fault detecting system and fault detecting method for photovoltaic power station remote monitoring
CN103441536A (en) * 2013-08-23 2013-12-11 中海阳能源集团股份有限公司 Local power supply dual-network distributed control system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102541031A (en) * 2012-02-10 2012-07-04 四川钟顺太阳能开发有限公司 Fieldbus-based large tracking photovoltaic plant distributed control system and control method thereof
CN102541031B (en) * 2012-02-10 2014-04-09 四川钟顺太阳能开发有限公司 Fieldbus-based large tracking photovoltaic plant distributed control system and control method thereof
CN103235221A (en) * 2013-04-18 2013-08-07 河海大学常州校区 Fault detecting system and fault detecting method for photovoltaic power station remote monitoring
CN103441536A (en) * 2013-08-23 2013-12-11 中海阳能源集团股份有限公司 Local power supply dual-network distributed control system
CN103441536B (en) * 2013-08-23 2015-10-28 中海阳能源集团股份有限公司 The two net Distributed Control System of local power

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