WO2014102706A1 - A method for operating renewable energy power plant and a system therefor - Google Patents

A method for operating renewable energy power plant and a system therefor Download PDF

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Publication number
WO2014102706A1
WO2014102706A1 PCT/IB2013/061272 IB2013061272W WO2014102706A1 WO 2014102706 A1 WO2014102706 A1 WO 2014102706A1 IB 2013061272 W IB2013061272 W IB 2013061272W WO 2014102706 A1 WO2014102706 A1 WO 2014102706A1
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Prior art keywords
power plant
renewable energy
energy power
information
atleast
Prior art date
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Ceased
Application number
PCT/IB2013/061272
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French (fr)
Inventor
Anitha Varghese
Mallikarjun Kande
Guntram Scheible
Jithendrian SUNDARAVARADAN
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ABB Research Ltd Switzerland
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ABB Research Ltd Switzerland
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Publication of WO2014102706A1 publication Critical patent/WO2014102706A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H04L67/62—Establishing a time schedule for servicing the requests
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network
    • H02J13/13—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network characterised by the transmission of data to equipment in the power network
    • H02J13/1331—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network characterised by the transmission of data to equipment in the power network using wireless data transmission
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
    • H02J2101/20—Dispersed power generation using renewable energy sources
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
    • H02J2101/20—Dispersed power generation using renewable energy sources
    • H02J2101/22—Solar energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
    • H02J3/381—Dispersed generators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/18—Network protocols supporting networked applications, e.g. including control of end-device applications over a network

Definitions

  • the invention relates to a renewable energy power plant, and more particularly to a method for operating renewable energy power plant through improved communication, and to a system therefor.
  • renewable energy comes from various natural resources such as sunlight, wind, rain, tides, waves and geothermal heat.
  • many sources such as solar plants, windmills, etc have active surfaces such as wind blades or solar panels, mirrors etc employed to convert energy from one form to another. Co-ordinated movement of these elements is sometimes necessary to ensure optimal power production.
  • the reliability and availability of renewable energy power plant using renewable sources of energy such as solar, wind etc, for generating power depends on the reliable function of the active surfaces, mechanisms to optimize power generation from solar or wind energy or the like, communication between various components of power plant, etc. Accordingly, solar power plant comprises of elemental components like solar panels, trackers, local controllers, central controller etc.
  • the wind mill essentially comprises rotor blades, the orientation of which in relation to the wind direction becomes important. These components function in coordination with each other towards producing power. Such coordination requires proper communication between these components, especially the local controllers and of the central controller.
  • the communication in the power plant can be established either in wired or wireless manner, sometimes through a hybrid communication involving both wired and wireless means of communication.
  • Wireless communication may be preferred over the wired communication, at least in terms of the physical wires getting eliminated.
  • a further object of the invention is to provide a solar system having optimal installation of the components deployed therein, and operating in accordance with the method of the invention.
  • the present invention relates to a method for operating renewable energy power plant.
  • the method of the invention comprises the steps of: establishing wireless communication amongst and between local controllers and a central controller for communicating information; communicating information wirelessly. Communicating information herein includes scheduling transmission of information based on the channel state of the local controllers in corresponding relation to its access point.
  • the method also includes monitoring the said renewable energy power plant and of the components thereof by the central controller remotely; and controlling the said renewable energy power plant and of the components thereof by and / or through the local controller remotely.
  • the present invention relates to a system for operating renewable energy power plant in accordance with the method of the invention.
  • the system comprises: at least one local controller corresponding to elements of the renewable power plant.
  • the local controllers are being wirelessly connected to its corresponding master controller through wireless access points and clients.
  • the central controller is provided for scheduling transmission of information amongst and between the local controller and a central controller for communicating information; and for monitoring and / or controlling the renewable energy power plant remotely.
  • Fig. 1 shows a system for operating solar power plant in accordance with the invention
  • Fig. 2 representing Figs. 2a through 2c shows the orientation of the antenna and the corresponding access point to illustrate the steering of the antenna, antenna beam pattern, and an example of mounting the antenna.
  • a system (100) for operating solar power plant is shown.
  • the system (100) has a plurality of local controllers (101), each of the local controller (101) is associated with a device on the field and represented through a node.
  • One or more local controllers (101) grouped together are wirelessly connected to a central controller (103) through an access point (102).
  • a hybrid connection involving both wired and wireless connection may be employed to realize the network and / or communication connection in the solar power plant.
  • the central controller (103) polls the devices i.e., their respective nodes one by one until all the devices under each of the access point (102) are included in the network.
  • the local controllers (101) are deployed to perform localized control in respect of the device(s) associated therewith. Accordingly, a solar panel (202) having an antenna (201) fixed thereto is controlled by a local controller (101) corresponding to it to provide or enable proper or appropriate orientation of the antenna (201) and its corresponding or respective access point (102) through steering of the antenna (201) or of the solar panel (202). Such orientation adjustments are indeed required for proper or efficient transmission of information.
  • an antenna (201) fixed on a solar panel (202) have proper orientation with the access point (102), where there is proper transmission of information.
  • channel state of the local controller is used in the application layer.
  • Channel state is determined as a function of the packet loss, delay in transmission of information etc., experienced with regard to a communication that takes place in the system.
  • the nodes associated with a particular local controller (101) which is farther away from its corresponding access point (102) have a bad channel state and is more vulnerable to packet loss and delays in transmission.
  • the retransmission attempts and timeout period for transmission of information should be raised. By this the redundancy may be increased as and when the need arises.
  • the communication in the system is performed through request-response protocol at the application layer, by which the transmission is made available for one local controller at any time instance.
  • the central controller (103) tracks the channel state pertaining to all the local controllers (101) deployed in the plant.
  • the monitoring of the solar power plant is done by the central controller (103) that includes but not limited to scheduling of transmission including the retransmission attempts, timeout period and periodicity of transmission etc., which are accordingly managed and administered by the central controller (103).
  • Suitable controlling is also effected in the plant.
  • the invention provides a method and system by which the solar power plant can be operated including monitoring and controlling from a remote location, and can be automated. It could be effected by the invention to monitor the plant during its operational period and that to subject it for any upgrades or maintenance during its non-operational period, as in the case of the plant being non-operational during nights due to lack of solar energy. This further increases the efficacy and utility of the system and of the plant.
  • the invention can also be coextensively employed with other sources of renewable energy like wind etc besides solar energy. Only certain features of the invention have been specifically illustrated and described herein, and many modifications and changes will occur to those skilled in the art. The invention is not restricted by the preferred embodiment described herein in the description. It is to be noted that the invention is explained by way of exemplary embodiment and is neither exhaustive nor limiting. Certain aspects of the invention that not been elaborated herein in the description are well understood by one skilled in the art. Also, the terms relating to singular form used herein in the description also include its plurality and vice versa, wherever applicable. Any relevant modification or variation, which is not described specifically in the specification are in fact to be construed of being well within the scope of the invention. The appended claims are intended to cover all such modifications and changes which fall within the spirit of the invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Computing Systems (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Selective Calling Equipment (AREA)

Abstract

The present relates to a method for operating renewable energy power plant. The method of the invention comprises the steps of: establishing wireless communication amongst and between local controllers and a central controller for communicating information; communicating information wirelessly. Communicating information herein includes scheduling transmission of information based on the channel state of the local controllers in corresponding relation to its access point. The method also includes monitoring the said renewable energy power plant and of the components thereof by the central controller remotely; and controlling the said renewable energy power plant and of the components thereof by and / or through the local controller remotely. The invention also relates to a system for operating renewable energy power plant in accordance with the method of the invention.

Description

A METHOD FOR OPERATING RENEWABLE ENERGY POWER PLANT
AND A SYSTEM THEREFOR
FIELD OF INVENTION
The invention relates to a renewable energy power plant, and more particularly to a method for operating renewable energy power plant through improved communication, and to a system therefor.
BACKGROUND
Renewable energy comes from various natural resources such as sunlight, wind, rain, tides, waves and geothermal heat. In generation of electric power using renewable energy, many sources, such as solar plants, windmills, etc have active surfaces such as wind blades or solar panels, mirrors etc employed to convert energy from one form to another. Co-ordinated movement of these elements is sometimes necessary to ensure optimal power production. The reliability and availability of renewable energy power plant using renewable sources of energy such as solar, wind etc, for generating power depends on the reliable function of the active surfaces, mechanisms to optimize power generation from solar or wind energy or the like, communication between various components of power plant, etc. Accordingly, solar power plant comprises of elemental components like solar panels, trackers, local controllers, central controller etc. In the case of a wind mill, the wind mill essentially comprises rotor blades, the orientation of which in relation to the wind direction becomes important. These components function in coordination with each other towards producing power. Such coordination requires proper communication between these components, especially the local controllers and of the central controller.
The communication in the power plant can be established either in wired or wireless manner, sometimes through a hybrid communication involving both wired and wireless means of communication. Wireless communication may be preferred over the wired communication, at least in terms of the physical wires getting eliminated.
However, in a setup involving wireless communication, the problems associated with data and of its transmission are often encountered. Typically, data packet loss, delays in data transmission, data collision, timeouts, orientation of antenna and the access point etc, are some of the problems that are usually encountered with, which drastically reduces the reliability in operation of the renewable energy power plant in entirety.
Therefore, there is a need for an invention that provides a solution for improved communication and optimal installation of wireless components in the renewable energy power plant. OBJECTS OF THE INVENTION
It is an object of the invention to provide a method for operating renewable energy power plant catering towards increased reliability and efficiency in operation.
It is also an object of the invention to provide a method for operating renewable energy power plant with improved communication and using multiple antennas, beam steering antennas, antenna mounting methods, dynamic power adjustment, heterogeneous wired and wireless communication configuration.
It is another object of the invention to provide a method for operating renewable energy power plant with the communication having cross layer optimization, and controlling packet transmission and antenna patterns or the like from the application layer.
It is also another object of the invention to provide a method for operating renewable energy power plant in which the communication has extended range for its access points.
It is yet another object of the invention to provide a method for operating renewable energy power plant with increased redundancy in communication according to the need thereof.
It is further object of the invention to provide a method for operating renewable energy power plant with remote monitoring through long haul wireless technique.
Also, a further object of the invention is to provide a solar system having optimal installation of the components deployed therein, and operating in accordance with the method of the invention.
SUMMARY OF THE INVENTION
Accordingly the present invention relates to a method for operating renewable energy power plant. The method of the invention comprises the steps of: establishing wireless communication amongst and between local controllers and a central controller for communicating information; communicating information wirelessly. Communicating information herein includes scheduling transmission of information based on the channel state of the local controllers in corresponding relation to its access point. The method also includes monitoring the said renewable energy power plant and of the components thereof by the central controller remotely; and controlling the said renewable energy power plant and of the components thereof by and / or through the local controller remotely. Accordingly, the present invention relates to a system for operating renewable energy power plant in accordance with the method of the invention. The system comprises: at least one local controller corresponding to elements of the renewable power plant. The local controllers are being wirelessly connected to its corresponding master controller through wireless access points and clients. The central controller is provided for scheduling transmission of information amongst and between the local controller and a central controller for communicating information; and for monitoring and / or controlling the renewable energy power plant remotely.
BRIEF DESCRIPTION OF THE DRAWINGS:
With reference to the accompanying drawings in which:
Fig. 1 shows a system for operating solar power plant in accordance with the invention, and
Fig. 2 representing Figs. 2a through 2c shows the orientation of the antenna and the corresponding access point to illustrate the steering of the antenna, antenna beam pattern, and an example of mounting the antenna.
DETAILED DESCRIPTION
The invention is further described herein after through a non-exhaustive exemplary embodiment of a solar power plant, and with reference to Figs 1 and 2.
In Figs. 1 and 2, a system (100) for operating solar power plant is shown. The system (100) has a plurality of local controllers (101), each of the local controller (101) is associated with a device on the field and represented through a node. One or more local controllers (101) grouped together are wirelessly connected to a central controller (103) through an access point (102). There may be one or more group of local controllers (101) that are connected to the central controller (103) through their corresponding or respective access points (102). This allows deploying increased number of nodes in relation to a particular access point, and also flexibility and increased optimal deployment therein may be realized suitably. A hybrid connection involving both wired and wireless connection may be employed to realize the network and / or communication connection in the solar power plant.
The central controller (103) polls the devices i.e., their respective nodes one by one until all the devices under each of the access point (102) are included in the network. The local controllers (101) are deployed to perform localized control in respect of the device(s) associated therewith. Accordingly, a solar panel (202) having an antenna (201) fixed thereto is controlled by a local controller (101) corresponding to it to provide or enable proper or appropriate orientation of the antenna (201) and its corresponding or respective access point (102) through steering of the antenna (201) or of the solar panel (202). Such orientation adjustments are indeed required for proper or efficient transmission of information. In Fig. 2a, an antenna (201) fixed on a solar panel (202) have proper orientation with the access point (102), where there is proper transmission of information. In Fig. 2b, it can be seen that the orientation referred here above is not proper owing to the positional change of the solar panel (202) and of the antenna (201). Such positional change disturbs the transmission of information and hence needs to be rectified to have proper transmission of information, for which the beam steering is required to provide proper transmission of information as can be seen from Fig. 2c.
It is understood that the communication plays a vital role in the operation of the solar power plant, and such communication established therein needs to be reliable and robust besides being safe and efficient. Accordingly, to enable this, channel state of the local controller is used in the application layer. Channel state is determined as a function of the packet loss, delay in transmission of information etc., experienced with regard to a communication that takes place in the system. For instance, the nodes associated with a particular local controller (101), which is farther away from its corresponding access point (102) have a bad channel state and is more vulnerable to packet loss and delays in transmission. For those local controllers, the retransmission attempts and timeout period for transmission of information should be raised. By this the redundancy may be increased as and when the need arises. Also, it becomes imperative to avoid collision of information emanating from and to various local controllers at any time instance. Hence, in order to eliminate the collision as referred herein before, the communication in the system is performed through request-response protocol at the application layer, by which the transmission is made available for one local controller at any time instance.
The central controller (103) tracks the channel state pertaining to all the local controllers (101) deployed in the plant. The monitoring of the solar power plant is done by the central controller (103) that includes but not limited to scheduling of transmission including the retransmission attempts, timeout period and periodicity of transmission etc., which are accordingly managed and administered by the central controller (103). Suitable controlling is also effected in the plant. Thus the invention provides a method and system by which the solar power plant can be operated including monitoring and controlling from a remote location, and can be automated. It could be effected by the invention to monitor the plant during its operational period and that to subject it for any upgrades or maintenance during its non-operational period, as in the case of the plant being non-operational during nights due to lack of solar energy. This further increases the efficacy and utility of the system and of the plant.
The invention can also be coextensively employed with other sources of renewable energy like wind etc besides solar energy. Only certain features of the invention have been specifically illustrated and described herein, and many modifications and changes will occur to those skilled in the art. The invention is not restricted by the preferred embodiment described herein in the description. It is to be noted that the invention is explained by way of exemplary embodiment and is neither exhaustive nor limiting. Certain aspects of the invention that not been elaborated herein in the description are well understood by one skilled in the art. Also, the terms relating to singular form used herein in the description also include its plurality and vice versa, wherever applicable. Any relevant modification or variation, which is not described specifically in the specification are in fact to be construed of being well within the scope of the invention. The appended claims are intended to cover all such modifications and changes which fall within the spirit of the invention.
Thus, it will be appreciated by those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The presently disclosed embodiments are therefore considered in all respects to be illustrative and not restricted. The scope of the invention is indicated by the appended claims rather than the foregoing description and all changes that come within the meaning and range and equivalence thereof are intended to be embraced therein.

Claims

WE CLAIM:
1. A method for operating renewable energy power plant, the said method comprising the steps of:
establishing wireless communication amongst and between atleast one local controller and a central controller for communicating information;
communicating information wirelessly, wherein said communicating information includes scheduling transmission of information based on the channel state of the local controllers in corresponding relation to atleast one access point;
monitoring the said renewable energy power plant and of the components thereof by the said central controller remotely; and
controlling the said renewable energy power plant and of the components thereof by and / or through the said atleast one local controller remotely.
2. The method as claimed in claim 1, wherein the said communicating information is based on request response protocol.
3. The method as claimed in claim 1, wherein the said channel state is a function of one or more of packet loss, delay in communication or the like.
4. The method as claimed in claim 1 or 3, wherein the said scheduling transmission includes one or more retransmission of information, or allocating future or current longer timeouts for transmission of information depending on the said channel state, or both.
5. The method as claimed in claim 1, wherein monitoring the said renewable energy power plant includes tracking the packet loss, delay in communication, channel states, orientation of antenna and the corresponding access point etc.
6. The method as claimed in claim 1 or 5, wherein controlling the said renewable energy power plant includes steering the antenna or antenna pattern or the solar panels or combination thereof.
7. The method as claimed in any one of the preceding claims, further comprising operating the renewable energy power plant through and / or from application layer in relation to transmission of information, retransmission of information, antenna beam steering etc or the like.
8. A system for operating renewable energy power plant in accordance with the method as claimed in any one of the preceding claims, wherein the said system comprises:
atleast one local controller corresponding to active elements of the renewable power plant, and wirelessly connected to atleast one access point; a central controller to which the said atleast one local controller is connected through the said atleast one access point, wherein the said central controller is provided for scheduling transmission of information amongst and between the said atleast one local controller and a central controller for communicating information; and for monitoring and / or controlling the said renewable energy power plant remotely.
9. The system as claimed in claim 8, wherein the said local controller is provided for steering the antenna and/or antenna pattern to establish optimal orientation with the corresponding access point and / or of the solar panel thereof.
10. The system as claimed in claim 8, wherein the said central controller is provided for polling the devices in the said renewable energy power plant represented by its respective nodes correspondingly connected to the said access point, and to allocate a time period for transmission of information, a time out period, and the periodicity od such transmission for each of the said node.
PCT/IB2013/061272 2012-12-28 2013-12-23 A method for operating renewable energy power plant and a system therefor Ceased WO2014102706A1 (en)

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EP3474096A1 (en) * 2017-10-18 2019-04-24 ABB Schweiz AG A control system for power conversion apparatuses
WO2020141009A1 (en) 2019-01-04 2020-07-09 Vestas Wind Systems A/S A hybrid renewable power plant

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3474096A1 (en) * 2017-10-18 2019-04-24 ABB Schweiz AG A control system for power conversion apparatuses
WO2020141009A1 (en) 2019-01-04 2020-07-09 Vestas Wind Systems A/S A hybrid renewable power plant

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