WO2017067585A1 - Procédé d'amélioration de la stabilité de micro-réseau électrique avec contrôleurs mgc - Google Patents

Procédé d'amélioration de la stabilité de micro-réseau électrique avec contrôleurs mgc Download PDF

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Publication number
WO2017067585A1
WO2017067585A1 PCT/EP2015/074311 EP2015074311W WO2017067585A1 WO 2017067585 A1 WO2017067585 A1 WO 2017067585A1 EP 2015074311 W EP2015074311 W EP 2015074311W WO 2017067585 A1 WO2017067585 A1 WO 2017067585A1
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WO
WIPO (PCT)
Prior art keywords
microgrid
control
asset
controller
control mode
Prior art date
Application number
PCT/EP2015/074311
Other languages
English (en)
Inventor
Ritwik MAJUMDER
Antonis MARINOPOULOS
Original Assignee
Abb Schweiz Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Abb Schweiz Ag filed Critical Abb Schweiz Ag
Priority to PCT/EP2015/074311 priority Critical patent/WO2017067585A1/fr
Publication of WO2017067585A1 publication Critical patent/WO2017067585A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—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 parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/388—Islanding, i.e. disconnection of local power supply from the network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—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 parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—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 parallely feeding a single network by two or more generators, converters or transformers
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/14—District level solutions, i.e. local energy networks
    • 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

Definitions

  • the i nvention relates to a method of controlling power in a microgrid and a microgrid controller for controlling a distri ubbed generator.
  • microgrid is, in general , meant a small grid at the distribution side of a main grid , which small grid includes distri cited generators that can contribute to the supply of power.
  • a prior patent application WO 2015/003729 A1 ('729) describes a method to balance the power in a microgrid when the microgrid loses its connection to a main grid .
  • the microgrid prepares for load sheddi ng in the microgrid when the microgrid is connected to a main grid , and effectuates the load shedding if the connection to the main grid is lost.
  • a potential load shedding is calculated in advance to speed up balancing of the power in the microgrid in case the grid connection is lost.
  • An aim of the method described in '729 is therefore to balance the power in the microgrid duri ng the transition from grid connected operation to islanded operation .
  • the transition, between grid connected operation and islanded operation is a short phase of the operation that is referred to as islanding , or islanding operation .
  • WO2015/1 13637 describes a system and method for distributed control of a microgrid .
  • the microgrid assets (“DGs” or “intelligent devices 1 ") calculate their capabilities (see page 7, line 1 1 -14), and communicate the calculated capabilities to the other microgrid assets.
  • the microgrid assets of '637 use a data model of the microgrid , and its elements, in order to determine the exchange of power within the microgrid . This makes it possible to plan for the production of the active power, reactive power and harmonic power withi n the microgrid .
  • An aim of the present invention is to provide a better stability within a microgrid duri ng islandi ng .
  • the present i nvention provides a method for controlling a microgrid .
  • the microgrid comprises a plurality of microgrid assets, each microgrid asset comprising a microgrid controller and an associated distributed generator, wherei n each microgrid controller is configured to control the associated distributed generator.
  • the method comprises:
  • the determining of individual control modes comprises:
  • the method further comprises determining whether a disconnection from the main grid occur, wherein
  • the method i n cludes repeating the steps of determining an individual control mode for each microgrid asset as a preparation for islanding operation , and wherein
  • the islanding operation comprises controlling each microgrid asset in accordance with the determined control mode for the microgrid asset.
  • the method of the invention can provide a fast stabilization by prepari ng for an un-planned disconnection from the main grid . As long as no disconnection occur, the method will determine new control modes in dependence of the current state of the microgrid assets, so that the microgrid is able to apply control modes of good balancing capacity whenever an unexpected disconnection occur, and always are prepared for un-planned disconnections.
  • the microgrid controllers control the distributed generators i n control modes in the grid-connected state, and determines other control modes for use if disconnected . These determined control modes are adapted for islanding operation and are only applied if the microgrid becomes disconnected , otherwise the control of the microgrid assets continues with the control modes of the grid- connected operation .
  • At least one of the determined control modes consists of:
  • At least one of the determined control modes consists of frequency regulation i n the microgrid and at least one of the determi ned control modes consists of voltage regulation in the microgrid .
  • control modes are selected from a group of control modes that comprises:
  • control of reactive power i n the microgrid and which group preferably also comprises control modes that consists of a combination of
  • the calculating of the capability of each microgrid asset is performed by the microgrid controller of the microgrid asset, and wherein the method further comprises:
  • each microgrid controller receives the calculated capabilities of the other microgrid assets from the other microgrid controllers.
  • the determi ning of a specific control mode for each microgrid asset is performed in every microgrid controller, which determining for each microgrid controller is based on the calculated control mode of the associated microgrid asset of the microgrid controller and the capabilities of the other microgrid assets as received from the other microgrid controllers, and wherei n the method further comprises
  • the method further includes:
  • the method further includes:
  • the microgrid assets are ranked in a hierarchical list of priority and wherei n the correcting includes performing a new determination of the control modes of some of the microgrid assets, while keeping the calculated control mode of at least one microgrid asset i ncludi ng keeping the calculated control mode of the microgrid asset that has the highest priority.
  • the calculating of the capability of each microgrid asset is performed by the microgrid controller of the microgrid asset, and the method further comprises:
  • each microgrid controller communicates from each microgrid controller the calculated capabilities to a central controller, which central controller performs the determining of a specific control mode for each microgrid asset i n case of islanding , based on the calculated control modes, and wherein the method further comprises:
  • each microgrid controller receives the control mode of the microgrid asset it belongs to, incl uding its associated distributed generator, which control mode should be used for the microgrid asset in case of islanding .
  • the present i nvention provides a microgrid controller for controlling the supply of power from a distri ubbed generator to a microgrid .
  • the microgrid controller is configured for connection to a distributed generator and together with the distributed generator provide a microgrid asset that is capable of supplying power to, and regulating power i n, the microgrid .
  • the microgrid controller comprises a control unit and a communication unit and is configured to communicate with other microgrid assets and determine an individual control mode for island operation of each microgrid asset of the microgrid .
  • the microgrid controller is adapted to:
  • the specific control modes may be determined based on the calculated control mode of its own microgrid asset and the received capabilities of the other microgrid assets.
  • microgrid controller is configured to:
  • microgrid controller is further configured to:
  • the microgrid controller is further adapted to:
  • the microgrid controller is further adapted to:
  • At least one of the determi ned control modes consists of a combination of frequency regulation and voltage regulation in the microgrid , or
  • At least one of the determined control modes consists of frequency regulation i n the microgrid and at least one of the determi ned control modes consists of voltage regulation in the microgrid .
  • control modes are selected from a group of control modes that comprises:
  • the microgrid controller comprises a voltage source converter.
  • the present i nvention provides a computer program product that is storable on a data carrier and comprises computer readable code that when executed by means of a microgrid controller enables the microgrid controller to perform the method of the first aspect includi ng the embodiments of the first aspect and/or configures the microgrid controller to perform the functions of the microgrid controller of the second aspect of the invention including the embodiments of the second aspect.
  • Figure 1 illustrates a microgrid .
  • Figure 2 illustrates a method of controlling a microgrid in accordance with the i nvention .
  • Figure 3 illustrates an embodiment of the method of controlling a microgrid .
  • Figure 4 illustrates an embodiment of a microgrid controller in accordance with the i nvention and a computer program product for controlling the microgrid controller.
  • FIG. 1 is an illustration of a microgrid 1 that comprises a connection 10 to a mai n grid (not illustrated), which connection often is referred to as a poi nt of common coupling (PCC).
  • PCC poi nt of common coupling
  • the microgrid 1 is configured to continuously monitor the status of the connection 10 to the main grid , so as to immediately detect disconnection from the main grid .
  • the microgrid 1 is arranged at a distribution side of the main grid and comprises loads 7, but also includes power sources, or microgrid assets 2.
  • the microgrid 1 includes feeder lines 4 and the loads 7 and microgrid assets 2 are interconnected by means of the feeder lines 4 and connected by means of the feeder lines 4 to the connection 10 to the mai n grid .
  • Each of the microgrid assets 2 comprises a distri ubbed generator 22 and a microgrid controller 21 and are connected to one of the feeder lines 4.
  • the distributed generators 22 may for example include a photovoltaic array, a wind power turbine, a gas turbine, or fuel cells and each microgrid controller 21 is configured to control its associated distributed generator 22 and the supply of power from the microgrid asset 2 to the microgrid 1 .
  • the microgrid controller 21 preferably includes a voltage source converter, such as an AC/DC-converter or AC/AC-converter dependi ng on the type of distri minded generator 22 to which it is connected .
  • the microgrid 1 may also comprise energy storages (not illustrated) such as electric battery storages and/or flywheel energy storages, provided for temporal power injections. There could be other types of temporal power injecting assets withi n the microgrid 1 .
  • Each microgrid controller 21 performs a primary control of the power provided by the associated distributed generator 22 , and may also provide a secondary control of the power in the microgrid 1 by means of regulating the power provided from the microgrid asset 2 to the microgrid 1 .
  • the microgrid 1 may comprise a central controller 5 for providing the secondary control of the power in the microgrid by transferring control commands to each microgrid controller 21 .
  • a central controller 5 for providing the secondary control of the power in the microgrid by transferring control commands to each microgrid controller 21 .
  • usi ng a central controller 5 is vul nerable in case of a failure i n the central controller 5. Therefore a distri ubbed control of the power in the microgrid 1 by means of the microgrid controllers 21 , one in each microgrid asset 2, is preferred , even though a central controller 5 is an alternative and not an excl uded option of the present invention.
  • the microgrid controllers 21 are communicatively connected to each other, and to the central controller 5 when such a central controller 5 is utilized .
  • the microgrid controllers 21 are preferably directly interconnected to each other by means of respective dedicated communication links 8.
  • a dedicated communication link 8 is also provided to inform each microgrid controller 21 of the status of the grid connection 1 0.
  • a network control system 1 1 is also arranged in the microgrid 1 , and is configured to monitor the status and power flow of the grid connection 10, shed loads 7, communicate with the mai n grid and the distributed microgrid controllers 21 of the microgrid assets 2.
  • the frequency in the microgrid 1 is usually stable.
  • the microgrid 1 may be disconnected from the mai n grid and enter into island operation, and should in such a case provide stability by itself.
  • the microgrid 1 is configured to prepare for a disconnection from the main grid , and is configured to stabilize itself during the transition , called islanding , when moving from grid connected operation to island operation .
  • a method for providing stability during islanding and subsequent entering i nto island operation will be descri bed with reference to figure 2.
  • the microgrid 1 is provided with means, in the form of the network control system 1 1 , for monitoring the connection 10 to the mai n grid and is configured to communicate status i nformation of the connection 10 to the microgrid controllers 21 .
  • a specific embodiment of controlling the microgrid 1 will be descri bed with reference to figure 3.
  • the microgrid 1 , and especially the microgrid assets 2 are configured to perform these methods.
  • the network control system 1 1 is configured to perform a load sheddi ng when the microgrid 1 becomes disconnected from the main grid .
  • the network control system 1 1 is configured to shed loads to provide an initial balancing of the power production and the loads 7 of the microgrid 1 when islanding , especially immediately upon detecting that the connection 10 to the main grid is lost.
  • Load shedding is not a main focus of the present invention , which present invention is more concerned with the problem of dynamic stabilization during islanding after the load sheddi ng.
  • the preparation for a disconnection may i nclude a central controller 5, however distri ubbed control for stabilizing the microgrid duri ng islanding performed by means of the microgrid controllers 21 is preferred .
  • the microgrid 1 comprises a number of microgrid controllers 21 , each of which is configured to control a respective distributed generator 22. Together each pair of a microgrid controller 21 and associated distributed generator 22 makes up a microgrid asset 2.
  • each microgrid controller 21 is configured to determine the capability of its associated distributed generator and in view of its own capability determi ne the capability of the microgrid asset 2 to contribute to voltage regulation , frequency regulation , power production and power stability during islanding and the following islanded state.
  • Each microgrid controller 21 is configured to control its associated distributed generator 22 to participate in different control modes; such as individual active power control , frequency regulation , voltage regulation and control of reactive power.
  • each microgrid controller 21 is configured to: - calculate the capability for the microgrid asset 2, i ncludi ng the associated distributed generator 22 , to contribute i n each of the available control modes for the distributed generator,
  • each microgrid controller 21 is further configured to cooperate with the other microgrid controllers 21 i n correcti ng the control modes if the microgrid controllers 21 have not come to the same control mode scheme. Such a correction may be done by repeating the process of determining i ndividual control modes for at least the differing control modes of the control mode scheme.
  • the microgrid controllers 21 may be ranked i n importance, such as capability order, and the control mode of the highest ramked microgrid controller 21 may be selected by the highest microgrid controller 21 and locked during the re-calculation of the control modes.
  • At least one control mode of the control modes of the microgrid assets 2 should incl ude frequency regulation and at least one should include voltage regulation .
  • each microgrid controllers 21 is further configured to control the associated distributed generator 22 in accordance with the control mode scheme when the microgrid 1 becomes disconnected from the mai n grid i .e. during islanding , and in the su bsequent island state.
  • the embodiment of central control differs in that the central controller 5 receives the capacities from the microgrid controllers 21 and prepares a control mode scheme that is transmitted , in return for the capabilities, to each microgrid asset 2 , especially each microgrid controller 21 .
  • Figure 2 illustrates a method for controlling a microgrid 1 that includes preparing for islanding , which preparing is performed when the microgrid 1 is connected to the main grid . The method is started duri ng grid-connected operation 101 , and incl udes determi ning 200 individual control modes for each one of the microgrid assets 2 of the microgrid 1 in case of losing the connection to the main grid .
  • the determining 200 of i ndividual control modes for each microgrid asset comprises:
  • the calculating 201 of the capability of the microgrid assets 2 is made i n view of their capabilities to operate during islanding and a subsequent island state.
  • the microgrid controller 21 may determi ne the capabilities based on local measurements of voltage, current, real power and reactive power output. Usi ng such measurements and in view of the power rating of the distributed generator 22 and the available controllability of the distributed generator 22 and microgrid controller 21 , the available capabilities can be determined for e.g . active and reactive power control and current injection capacity etc. In view of such capability factors, the capabilities for different control functions can be specified , such as: - voltage control with an available number of power units for reactive power;
  • MPPT Maximum Power Point Tracking
  • control modes may i nclude a combination of two types of control . It is preferred that the selectable control modes include:
  • the method continues with determining 203 a control scheme for controlling the microgrid 1 in case of islandi ng .
  • the control scheme specifies one control mode for each microgrid asset 2 to be used if the connection to the main grid is lost.
  • the control modes of the control mode scheme are selected in order to provide dynamic stability in the microgrid during islanding .
  • At least one control mode of the selected control scheme should include frequency regulation and at least one control mode should include voltage regulation , e.g . one control mode consisting of a combination of frequency regulation and voltage regulation . It is also desireable to include control of reactive power and/or individual power production , if possi ble. However, control of the frequency and voltage are the most important in order to provide a dynamic stabilization of the microgrid 1 during islanding .
  • control modes can be selected in accordance with methods known from the prior art that are used for example for performing a black start, i .e. starting in an island state, of a microgrid 1 .
  • an important feature of the present invention is that the control modes are determined when the microgrid 1 is connected to a mai n grid .
  • the method conti nues with monitoring if the grid connection is lost. If the grid connection is not lost, the method i ncludes repeating the steps of determining 200 individual control modes. This determi ning 200 can be repeated at regular intervals, such as once every 60 seconds or 30 seconds or once every 1 0 seconds.
  • the method continues with applying 301 the control modes of the control scheme immediately, so that each microgrid asset 2 is controlled in accordance with its determined control mode.
  • the network control system 1 1 of the microgrid 1 may perform a load shedding immediately when losing the connection 10 to the main grid .
  • the load shedding is suitably determi ned in advance already during operation i n the grid- connected state.
  • Figure 3 illustrates a specific embodiment of the method in more detail .
  • the specific embodiment of figure 3 describes the case wherei n the steps of determining 200 the i ndividual control modes are performed i n a distri ubbed manner by means of the microgrid assets 2 themselves, without the need for a central microgrid controller 5.
  • the determining 200 of the i ndividual control modes for each microgrid asset 2 is performed i n a distributed way by means of joint cooperation of the microgrid controllers 21 .
  • the determining 200 of the individual control modes for each microgrid asset 2 that includes a distributed generator 22 begins with calculations made by each microgrid controller 21 .
  • Each microgrid controller 21 (“MGC") calculates 201 the capabilities of each available control mode of the microgrid asset 2, i ncluding its associated distributed generator 22 , to contribute to the control the power of the microgrid 1 in case of islanding .
  • the determining 200 of the individual control modes is performed when the microgrid 1 is connected to the main grid , as a preparation for an un-expected or un-planned , disconnection and subsequent island operation .
  • the microgrid controller 21 When each microgrid controller 21 has calculated the available control modes, and the available capacity of each control mode, the microgrid controller 21 communicate 202 the capabilities of the microgrid asset in question to the other microgrid controllers 21 .
  • Each microgrid controller 21 may also be configured to transfer a message indicating that it could or would not participate in the distributed control of the microgrid 1 , for example when its associated distributed generator 22 is disconnected from the microgrid 1 , or if the microgrid controller 21 experiences difficulties with the power production, or its control functions.
  • Each one of the microgrid controllers 21 receives the control mode capabilities and uses these as a bases to determine 203 a control mode scheme for the microgrid 1 , which scheme includes one control mode for each microgrid asset 2 to be used in case of islanding .
  • the determined control mode scheme for island operation of the microgrid is communicated 204 by each microgrid controller 21 to the other microgrid controllers 21 .
  • the method conti nues with each microgrid controller 21 making a cross-check 205 of the communicated control schemes.
  • each microgrid controller 21 applies the control mode that belong to the microgrid asset 2 in question , including its associated distri ubbed generator 22 , and thus, starts controlling the associated distributed generator 21 and regulate the power supplied to, voltage or frequency of, the microgrid 1 i n accordance with the determined control mode for the microgrid asset 2 in question. If, however, the connection to the main grid is not lost, the process of determining 200 individual control modes for each microgrid asset 2 is repeated . This repetition may be made at time intervals, for example every 60, 30 or 10 seconds.
  • the microgrid controllers 21 determines that one or more microgrid controllers 21 has/have determined a differing control mode scheme than the other microgrid controllers 21 , the microgrid controllers 21 starts correcting 206 the control scheme.
  • the correction 206 of the control mode scheme can be performed in different ways.
  • the microgrid assets 2 can be ordered i n a priority list and the microgrid asset 2 havi ng the highest priority can select the control mode that has been determi ned , i n step 203. Such a selection can be made and the selection for the microgrid asset 2 that has the highest priority is locked to that control mode, where after the control modes for the other microgrid assets are determined 203 again . These newly determi ned control modes are then communicated 204 and crosschecked 205.
  • each individual control mode for a number of the highest prioritized microgrid assets 2 have been determined to be the same duri ng the cross-checking 205, all these can be locked , and only the lower prioritized microgrid assets 2 may be the su bjects of a re-calculation 203 of control modes for the control mode scheme.
  • FIG 4 is a simplified illustration of a microgrid controller 21 of the i nvention , which illustrates specific control functions of the microgrid controller 21 .
  • the microgrid controller 21 comprises a communication unit 42 and a control unit 41 , and is configured to determi ning an i ndividual control mode for island operation for a plurality of microgrid assets of a microgrid .
  • the control unit 41 is configured with functions for performing the method steps of the microgrid controller 21 , which functions is provided by means of a combination of hardware and software, such as software functions implemented in the control unit 41 .
  • the exemplified control unit 41 of the microgrid controller 21 comprises a capacity calculator 43 configured to the capability of the microgrid asset 2, i .e.
  • the microgrid controller 21 and an associated distri authored generator 22 to contribute in each of a plurality of possible control modes of the microgrid asset 2.
  • the possible control modes comprises active power control of the distri authored generator 22 , frequency regulation in the microgrid , voltage regulation in the microgrid 1 , and reactive power control in the microgrid 1 .
  • the control unit 41 further comprises a control mode determiner 44 configured to determine a specific/individual control mode for each of the pl urality of microgrid assets 2 of the microgrid 1 , which individual control modes are the control modes by which the microgrid assets should be controlled in case of islanding .
  • the control modes of all the microgrid assets 2 is preferably provided as a control mode scheme.
  • the control unit 41 of the microgrid controller 21 is configured to exchange the determined control modes, e.g . the control mode schemes, with the other microgrid controllers 21 of the microgrid , by means of the communication units.
  • the control unit 41 also comprises a cross-checking unit 45 configured for ensuring that the control modes, e.g . the control mode schemes, as determined by the microgrid controllers are the same.
  • the control unit 41 is also configured to correct the control mode schemes if these do not comply, in cooperative communication with the other microgrid controllers 21 .
  • Figure 4 also illustrates a computer disc 46 stored with computer readable code that when executed i n a microgrid controller 21 enables a microgrid controller to perform the functions of the microgrid controller 21 of the present invention .
  • a method for controlling a microgrid 1 comprising a plurality of microgrid assets 2, and microgrid controllers 21 for distri ubbed control of the method have been described in the embodiments.
  • the described method comprises determining 200 an individual control mode for island operation for each microgrid asset 2 , which determining of i ndividual control modes for island operation is performed when the microgrid 1 is connected to a main grid .
  • the described embodiments of determining 200 the individual control modes comprises calculating 201 the capability of each microgrid asset 2 to contribute in each of the available control modes of the microgrid asset 2 , and determining 203 a specific control mode for each microgrid asset 2 in case of islanding .
  • the embodiments of the method further comprises determining 1 1 0 whether a disconnection from the main grid occur.
  • the embodiments of the method incl udes repeating the steps of determining 200 an individual control mode for each microgrid asset 2 as a preparation for islanding operation .
  • the embodiments of the method includes controlling 301 each microgrid asset 2 in accordance with the determined control mode for the microgrid asset.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

L'invention concerne un procédé de contrôle d'un micro-réseau électrique (1) comprenant une pluralité d'actifs de micro-réseau électrique (2), consistant à déterminer (200) un mode de commande individuel pour un fonctionnement en îlot de chaque actif de micro-réseau électrique (2), laquelle détermination de modes de commande individuels pour un fonctionnement en îlot est effectuée lorsque le micro-réseau électrique (1) est connecté. La détermination (200) consiste à calculer (201) la capacité de chaque actif de micro-réseau électrique (2) pour contribuer dans chacun des modes de commande disponibles de l'actif de micro-réseau électrique (2), et à déterminer (203) un mode de commande spécifique pour chaque actif de micro-réseau électrique (2) en cas d'îlotage. Le procédé consiste en outre à déterminer (110) s'il se produit une déconnexion du réseau électrique principal. Lorsque le micro-réseau électrique (1) est toujours connecté au réseau électrique principal, le procédé consiste à répéter les étapes consistant à déterminer (200) un mode de commande individuel pour chaque actif de micro-réseau électrique (2) à titre de préparation d'un fonctionnement en îlotage. Lorsque le micro-réseau électrique (1) est déconnecté du réseau électrique principal, le procédé consiste à contrôler (301) chaque actif de micro-réseau électrique (2) en fonction du mode de commande déterminé pour l'actif de micro-réseau électrique. L'invention concerne également des contrôleurs de micro-réseau électrique 21 pour une commande distribuée du procédé.
PCT/EP2015/074311 2015-10-21 2015-10-21 Procédé d'amélioration de la stabilité de micro-réseau électrique avec contrôleurs mgc WO2017067585A1 (fr)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108521345A (zh) * 2018-04-04 2018-09-11 燕山大学 一种考虑通信中断的孤岛微电网的信息物理协同应对方法
EP3627433A1 (fr) * 2018-09-19 2020-03-25 ABB Schweiz AG Détermination de la résilience dans un microréseau
TWI714034B (zh) * 2018-04-18 2020-12-21 日商日立製作所股份有限公司 電力變換裝置及電力變換控制方法
CN113454867A (zh) * 2019-02-22 2021-09-28 Abb瑞士股份有限公司 控制包括微电网的电力配电系统的方法
CN113839420A (zh) * 2021-11-02 2021-12-24 国网黑龙江省电力有限公司电力科学研究院 一种基于动态相量法的孤岛微电网稳定性分析方法
US11271403B2 (en) 2017-10-06 2022-03-08 Vestas Wind Systems A/S Method for operating a wind power facility

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130054038A1 (en) * 2011-08-31 2013-02-28 General Electric Company Systems and Methods for Performing Islanding Operations
US20140100705A1 (en) * 2012-10-09 2014-04-10 Nec Laboratories America, Inc. Distributed generation control for microgrid during islanding
WO2015003729A1 (fr) 2013-07-08 2015-01-15 Abb Technology Ltd Régulation de la puissance dans un micro-réseau
US20150039145A1 (en) * 2013-07-31 2015-02-05 Abb Technology Ag Microgrid Energy Management System and Method for Controlling Operation of a Microgrid
WO2015113637A1 (fr) 2014-02-03 2015-08-06 Green Power Technologies, S.L. Système et procédé de commande et de gestion distribuées d'un miniréseau

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130054038A1 (en) * 2011-08-31 2013-02-28 General Electric Company Systems and Methods for Performing Islanding Operations
US20140100705A1 (en) * 2012-10-09 2014-04-10 Nec Laboratories America, Inc. Distributed generation control for microgrid during islanding
WO2015003729A1 (fr) 2013-07-08 2015-01-15 Abb Technology Ltd Régulation de la puissance dans un micro-réseau
US20150039145A1 (en) * 2013-07-31 2015-02-05 Abb Technology Ag Microgrid Energy Management System and Method for Controlling Operation of a Microgrid
WO2015113637A1 (fr) 2014-02-03 2015-08-06 Green Power Technologies, S.L. Système et procédé de commande et de gestion distribuées d'un miniréseau

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11271403B2 (en) 2017-10-06 2022-03-08 Vestas Wind Systems A/S Method for operating a wind power facility
CN108521345B (zh) * 2018-04-04 2021-01-08 燕山大学 一种考虑通信中断的孤岛微电网的信息物理协同应对方法
CN108521345A (zh) * 2018-04-04 2018-09-11 燕山大学 一种考虑通信中断的孤岛微电网的信息物理协同应对方法
TWI714034B (zh) * 2018-04-18 2020-12-21 日商日立製作所股份有限公司 電力變換裝置及電力變換控制方法
JP7032608B2 (ja) 2018-09-19 2022-03-08 ヒタチ・エナジー・スウィツァーランド・アクチェンゲゼルシャフト マイクログリッドにおけるレジリエンスの判断
EP3627433A1 (fr) * 2018-09-19 2020-03-25 ABB Schweiz AG Détermination de la résilience dans un microréseau
WO2020058040A1 (fr) * 2018-09-19 2020-03-26 Abb Schweiz Ag Détermination de résilience dans un micro-réseau
CN112714991A (zh) * 2018-09-19 2021-04-27 Abb电网瑞士股份公司 微电网韧性的测定
JP2021529503A (ja) * 2018-09-19 2021-10-28 アー・ベー・ベー・パワー・グリッズ・スウィツァーランド・アクチェンゲゼルシャフトＡｂｂ Ｐｏｗｅｒ Ｇｒｉｄｓ Ｓｗｉｔｚｅｒｌａｎｄ Ａｇ マイクログリッドにおけるレジリエンスの判断
US11163281B2 (en) 2018-09-19 2021-11-02 Abb Power Grids Switzerland Ag Resiliency determination in a microgrid
AU2019343715B2 (en) * 2018-09-19 2022-04-21 Hitachi Energy Ltd Resiliency determination in a microgrid
CN113454867A (zh) * 2019-02-22 2021-09-28 Abb瑞士股份有限公司 控制包括微电网的电力配电系统的方法
US20220166218A1 (en) * 2019-02-22 2022-05-26 Abb Power Grids Switzerland Ag Method of controlling a power distribution system including a microgrid
CN113839420A (zh) * 2021-11-02 2021-12-24 国网黑龙江省电力有限公司电力科学研究院 一种基于动态相量法的孤岛微电网稳定性分析方法

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