WO2013064377A2 - Unité d'alimentation et ensemble générateur et consommateur de courant - Google Patents

Unité d'alimentation et ensemble générateur et consommateur de courant Download PDF

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Publication number
WO2013064377A2
WO2013064377A2 PCT/EP2012/070608 EP2012070608W WO2013064377A2 WO 2013064377 A2 WO2013064377 A2 WO 2013064377A2 EP 2012070608 W EP2012070608 W EP 2012070608W WO 2013064377 A2 WO2013064377 A2 WO 2013064377A2
Authority
WO
WIPO (PCT)
Prior art keywords
feed
phase
power
network
consumption
Prior art date
Application number
PCT/EP2012/070608
Other languages
German (de)
English (en)
Other versions
WO2013064377A3 (fr
Inventor
Lothar Schindele
Wolfgang Bronner
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2013064377A2 publication Critical patent/WO2013064377A2/fr
Publication of WO2013064377A3 publication Critical patent/WO2013064377A3/fr

Links

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
    • H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
    • 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
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • 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
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • 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
    • Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks

Definitions

  • the invention relates to a feed unit of a direct current generator connected to a three-phase alternating current network via a home feed point, in particular a photovoltaic system, at the house feed point of which at least part of the energy produced is at least temporarily removed directly. Furthermore, it relates to a power generation and consumption arrangement with such a feed unit.
  • feed-in units can generate or convert AC, single, dual or three-phase AC voltage and transfer it into power grids.
  • Two- and three-phase supply units are today designed in such a way that they feed the converted power symmetrically as alternating current / voltage.
  • buildings have a three-phase grid consisting of phases LI, L2, L3.
  • Feeder units such as inverters in or on the building (eg photovoltaic inverters) feed the energy generated to one, two or three of these Phases.
  • the feed is evenly “distributed" to all power phases in the power grid, but consumers usually receive their operating power over one phase (eg refrigerator), only with higher power consumption over three phases (eg stove)
  • the arrangement comprises a photovoltaic system 11 as a direct current generator and an inverter 13 as a simple supply unit, which converts the exemplary DC output power of 6 kW of the direct current generator 11 into AC output power and uniformly, So with shares ever 2 kW, fed into the three phases of a public three-phase network 15.
  • Claim 1 provided. Furthermore, a power generation and consumption arrangement with the features of claim 7 is proposed.
  • Advantageous developments of the inventive concept are the subject of the dependent claims.
  • the term "house entry point" is to be understood not only as the entry point of a residential building, but in a broader sense as the entry point of each decentralized, smaller plant for energy production, which may well be distributed over several buildings and / or Can include open space components.
  • the invention includes the idea of creating an "intelligent" feed-in unit which dynamically phase-selectively controls the grid feed, taking into account the active and reactive powers occurring at the feed-in point and the phase-selective detection of internal demand or an admissible feed-in power Furthermore, it is proposed that the feed-in unit has an input side with the power status detection means and own power requirement Detection means and / or power supply default means connected Phaseneinspeise control unit and via the Phaseneinspeise control unit at least e Iner phase of the three-phase AC power supply with a predetermined power feed switchable inverter.
  • the phase-selective control of the infeed enables the maximum self-use of the energy generated by decentralized generators (eg in photovoltaics), while at the same time avoiding unbalanced loads at the connection point of the building, and thus contributes to minimizing the unbalanced loads in the network.
  • decentralized generators eg in photovoltaics
  • the control of the feed distributed to the respective phases can additionally take place by presetting in the device, manually by an operator interface or via a communication interface by a higher-order switching point (eg of the intelligent building electricity meter or the network operator). Through such measures, higher transmission losses in the electrical supply network can be minimized.
  • the feed-in unit comprises a first communication interface for receiving externally provided data for admissible grid feed-in or output data for their determination and / or for the active and reactive powers occurring at the feed-in point. This ensures that functionally essential operating parameters of the network or of the special feed-in point are available for the feed-in unit.
  • phase feed control unit or the inverter has power limiting means for establishing a maximum amount of the phase-selective power supply. This version ensures, even without special communication technology, an overload protection for the individual phases of the network.
  • the inverter has three individually stepwise or analog controllable outputs for connection to one phase of the three-phase alternating current network.
  • the inverter has a controllable via a control input B6 bridge circuit.
  • a further embodiment of the feed unit is characterized in that the inverter has means for potential separation.
  • the proposed power generation and consumption arrangement with a DC generator connected to the three-phase alternating current network comprises at least one current consumer and / or energy store connected to the feed point on at least one phase of the network and a feed-in unit of the type described above, which together form a sub-network of the (public) network with autonomous feed-in and consumption control.
  • the arrangement has a feed and Verbrauchsterrorismer adopted for detecting and, in particular time-dependent, registration of fed and consumed power at the feed point for the individual phases of the network.
  • the arrangement has a (second) communication interface for transmitting meter data from the feed-in and consumption meter device to a network control center.
  • a (second) communication interface for transmitting meter data from the feed-in and consumption meter device to a network control center.
  • Yet another embodiment finally comprises an operator interface for manual influencing, in particular for time programming, parameters of the grid feed and / or self-consumption and / or an energy supply to the energy storage or a withdrawal of energy from this.
  • FIG. 2 shows, in a representation similar to FIG. 1, how, in a power generation and consumption arrangement 20, the power delivered by a DC generator 21 is DC-controlled in a phase-selectively controllable feed unit 22 comprising an inverter 23 having a control input 23a / AC conversion is selectively distributed to the three phases of a network 25.
  • FIG. 3 shows, again in a similar representation, a power generation and consumption arrangement 30 which, in addition to a power generator 31, also includes a local power consumer 37.
  • the feed unit 32 which in turn comprises a controllable inverter 33 with control input 33a, operated such that in the first phase 35a of the (public) network 35, to which the local load 37 is connected, a power of 4 kW is fed, while in the two remaining phases 35b and 35c only one power of 1 kW is fed in each case.
  • This control mode is set at the level of the 4 kW fed into the corresponding phase in view of the power consumption of the local consumer and, as explained above, avoids significant losses and unbalanced loads. With conventional "symmetrical" feeding into the three phases, the local consumer would need an additional 37
  • FIG. 4 shows by way of example the structure of an embodiment of the feed unit 32 of FIG. 3 with the inverter 33.
  • the feed unit comprises power status detection means 32a for phase-selective detection of the active and reactive power P, Q, own-demand detection means 32b for the phase-selective detection occurring at the feed-in point of existing (phase selective) personal use P
  • phase feed control unit 32d which are hardware and software-based for the processing of the provided parameters and to provide a control record C at the control input 33a of the inverter 33 is equipped.
  • the inverter itself comprises means for potential separation 33b and has three individually controllable analog outputs 34a, 34b and 34c for connection to one phase of the three-phase alternating current network 35 (FIG. 3).
  • the inverter power limiter means 32e for determining a maximum amount of the phase-selective power supply (regardless of the control signal C, which was possibly calculated. Taking into account a current mains supply maximum value).
  • the inverter may include three separately packaged components for each network phase linked by communication services.
  • the components 32a, 32b and 32c serving to monitor network parameters can be implemented in a control room of the public network or arranged in the area of the network feed-in point, wherein in the first case means for data transmission from the network control center to the feed-in unit are provided.
  • 5 shows, by way of example, a network environment of a feed unit 52 according to the invention of a direct current product 51 for connection to a public network 55 in a somewhat more precise manner and in a synoptically summarizing manner in an already explained above aspects. Shown in the other figures and explained above components are denoted by reference to the local representation reference numerals.
  • the power generation and consumption arrangement 50 includes an energy store 56, which-like a local consumer 57-is connected to one phase of the three-phase AC network 55.
  • the arrangement includes a feed and meter counter 58 for detection and time dependent
  • an associated communication interface 58a for transmission of meter data to the network control center and an operator interface 59 for manually influencing, in particular temporal programming of parameters of the grid feed or self-consumption or the energy supply in the energy Gie Equipment 56 or a withdrawal of energy from this.
  • the components mentioned form a subnetwork which can be independently controlled in terms of feed-in and consumption.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

L'invention concerne une unité d'alimentation d'un générateur de courant continu (21; 31; 51) raccordé à un réseau de courant alternatif biphasé ou triphasé (25; 35; 55). Elle concerne en outre un ensemble générateur et consommateur de courant qui comprend une interface utilisateur (59) permettant une commande manuelle, en particulier pour la programmation temporelle des paramètres d'alimentation réseau et/ou de la consommation propre et/ou d'un apport d'énergie dans un dispositif de stockage d'énergie (56) ou d'un prélèvement d'énergie dans ce dernier.
PCT/EP2012/070608 2011-11-03 2012-10-18 Unité d'alimentation et ensemble générateur et consommateur de courant WO2013064377A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011085676A DE102011085676A1 (de) 2011-11-03 2011-11-03 Einspeiseeinheit und Stromerzeugungs- und Verbrauchsanordnung
DE102011085676.5 2011-11-03

Publications (2)

Publication Number Publication Date
WO2013064377A2 true WO2013064377A2 (fr) 2013-05-10
WO2013064377A3 WO2013064377A3 (fr) 2013-11-07

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PCT/EP2012/070608 WO2013064377A2 (fr) 2011-11-03 2012-10-18 Unité d'alimentation et ensemble générateur et consommateur de courant

Country Status (2)

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DE (1) DE102011085676A1 (fr)
WO (1) WO2013064377A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014200412A1 (de) * 2014-01-13 2015-07-16 Robert Bosch Gmbh Verfahren und Wechselrichter zum Einspeisen elektrischer Energie in ein Wechselspannungsnetz

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CN106463964B (zh) * 2014-04-17 2018-05-11 Abb瑞士股份有限公司 用于平衡微网中的相的能量存储
DE102017100138A1 (de) * 2017-01-05 2018-07-05 Envia Mitteldeutsche Energie Ag Verfahren zum Betreiben eines Teilnehmers an einem Versorgungsnetz
DE102019106583A1 (de) 2019-03-14 2020-09-17 Sma Solar Technology Ag Verfahren zur dreiphasigen Einspeisung in ein Wechselspannungsnetz und dreiphasiger Wechselrichter
DE102020000174A1 (de) 2020-01-14 2021-07-15 Innogy Se Steuerungseinheit für eine Energieeinspeiseeinheit, Energieeinspeiseeinheit, Energieeinspeisesystem und Netzinfrastruktur
CN111244977B (zh) * 2020-01-19 2021-04-23 国网冀北电力有限公司电力科学研究院 基于低压配电网的三相不平衡负荷分级迭代调整方法
CN111244979B (zh) * 2020-01-19 2021-04-23 国网冀北电力有限公司电力科学研究院 基于低压配电网功率和用电量的三相不平衡负荷调整方法
CN111244978B (zh) * 2020-01-19 2021-04-23 国网冀北电力有限公司电力科学研究院 基于单相用户功率特性的低压配电网三相平衡方法

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NZ594664A (en) * 2009-02-06 2012-12-21 Eandis Meter that selectively connects single-phase outputs to multi-phase inputs in response to a received control signal
EP2348597A1 (fr) * 2010-01-20 2011-07-27 SMA Solar Technology AG Adaptation de prestations partielles s'écoulant par le biais de chaque phase d'un courant alternatif multiphase
US8452461B2 (en) * 2011-05-10 2013-05-28 First Solar, Inc Control system for photovoltaic power plant

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014200412A1 (de) * 2014-01-13 2015-07-16 Robert Bosch Gmbh Verfahren und Wechselrichter zum Einspeisen elektrischer Energie in ein Wechselspannungsnetz

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Publication number Publication date
DE102011085676A1 (de) 2013-05-08
WO2013064377A3 (fr) 2013-11-07

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