WO2005117136A2 - Installation photovoltaique d'alimentation d'un reseau electrique et appareil central de commande et de surveillance d'une installation photovoltaique - Google Patents

Installation photovoltaique d'alimentation d'un reseau electrique et appareil central de commande et de surveillance d'une installation photovoltaique Download PDF

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Publication number
WO2005117136A2
WO2005117136A2 PCT/EP2005/052311 EP2005052311W WO2005117136A2 WO 2005117136 A2 WO2005117136 A2 WO 2005117136A2 EP 2005052311 W EP2005052311 W EP 2005052311W WO 2005117136 A2 WO2005117136 A2 WO 2005117136A2
Authority
WO
WIPO (PCT)
Prior art keywords
monitoring device
monitoring
network
solar
central control
Prior art date
Application number
PCT/EP2005/052311
Other languages
German (de)
English (en)
Other versions
WO2005117136A3 (fr
Inventor
Roland Burger
Richard Schmidt
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2005117136A2 publication Critical patent/WO2005117136A2/fr
Publication of WO2005117136A3 publication Critical patent/WO2005117136A3/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/493—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
    • 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
    • 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
    • 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

Definitions

  • Photovoltaic system for feeding into an electrical network as well as a central control and monitoring device for a photovoltaic system
  • the invention relates to a photovoltaic system for feeding into an electrical network, in particular into a public power supply network, with a plurality of solar inverters, to each of which a photovoltaic generator can be connected, the
  • Solar inverters are connected to one another via a communication bus for data technology purposes, and a central control and monitoring device, which is also connected to the communication bus, is provided for controlling and monitoring the solar inverters.
  • the invention relates to a central control and monitoring device for such a photovoltaic system.
  • Photovoltaic systems are used to feed electrical current into an electrical network, such as a 1-phase 50 Hz / 230 V voltage network or a 3-phase 50 Hz / 400 V voltage network, for example from an energy supply company.
  • photovoltaic systems can have one or more photovoltaic generators, wherein a photovoltaic generator can consist of one or more solar modules, which in turn can have a large number of interconnected solar cells.
  • Several solar modules are usually connected in series as a "string" so that the input voltage required by the inverter module is reached.
  • the electrical current generated by photovoltaic means is then fed to one or more solar inverters, which convert the supplied DC voltage into a regulated, standardized grid voltage.
  • solar inverters are known for single-phase versions, for example in DE 196 42 522 Cl.
  • a photovoltaic system can also have a system control level for controlling and operating several connected solar inverters.
  • a maximum single-phase feed-in power of 4.6 kVA is permitted.
  • the solar inverter must either be three-phase or several single-phase solar inverters must be provided, which feed in distributed over the three phases of the electrical network. An unbalanced load between the phases of over 4.6 kVA is not permitted.
  • an approved and also single-phase grid monitoring device For single-phase feeding solar inverters up to 4.6kVA, an approved and also single-phase grid monitoring device must be provided. This continuously monitors the network voltage, the network frequency and changes in the network impedance on the network side. If one of the monitoring criteria to be monitored is violated, the feeding solar inverter is switched off safely.
  • the network monitoring device ensures that no mains voltages that are dangerous for the service personnel can be present during maintenance work on the network if the relevant power branches are disconnected from the power supply network.
  • a three-phase network monitoring device can also be used, which is then approved for electrical power up to 30kVA.
  • the relevant solar inverter is switched off for approx. 30 seconds. Then the solar inverter is switched on again, if the above Criteria are again within the permissible range.
  • a central control and monitoring device controls and monitors the solar inverters, which are usually connected to each other via a communication bus.
  • the display unit and input buttons on the control and monitoring device can then be used, for example, to display the current feed-in power, sunshine duration and internal parameters of the connected solar inverters and, if necessary, to change these parameters, for example in the event of an expansion of the photovoltaic system.
  • a disadvantage of the previous modular design of the solar inverters is that the respective grid monitoring devices influence one another when a number of modules of solar inverters are connected in series, which leads to increased unnecessary shutdowns of solar inverters and consequently to losses in terms of the energy fed in.
  • the object is achieved with a photovoltaic system for feeding into an electrical network, the photovoltaic system having a plurality of solar inverters which feed into the electrical network on the output side and a plurality of photovoltaic generators, each of which is connected to an input side of a solar inverter.
  • a communication bus connects the solar inverters to one another in terms of data technology, a central control and monitoring device being provided which is likewise connected to the communication bus for controlling and monitoring the solar inverters and has a network monitoring device which switches off the solar inverters at least temporarily if predetermined network monitoring criteria are not complied with.
  • the great advantage of the invention lies in the fact that a central control and monitoring device takes over the exclusive network monitoring. This prevents mutual interference, for example, due to an impedance jump in a switched-off solar inverter, the otherwise modular solar inverters, each with its own grid monitoring device. Unnecessary shutdowns of individual solar inverters are avoided. The amount of electrical energy fed in is increased.
  • the network monitoring device of the central control and monitoring device can be designed as a single or three-phase system in accordance with the projected solar feed-in power.
  • the network monitoring device can be designed in such a way that it can be exchanged within the central control and monitoring device.
  • the network monitoring devices usually require a technical approval from a national or international approval authority in order to meet the corresponding security requirements.
  • the network monitoring device has measuring means for monitoring a predefinable voltage and / or frequency range and / or a predeterminable impedance jump value.
  • the network monitoring device is particularly suitable for a public single-phase or three-phase 50 Hz AC network, such as in Europe, or also for a 60Hz AC network, e.g. trained in the USA.
  • the task is also solved with a central control and monitoring device for controlling and monitoring several solar inverters of a photovoltaic system for feeding into an electrical network and for monitoring predeterminable network-side monitoring criteria.
  • the figure shows a photovoltaic system PVA according to the invention, which has four photovoltaic generators SM1-SM4 by way of example. For the sake of clarity, their internal structure is not shown any further.
  • the photovoltaic generators SM1-SM4 feed into one solar inverter M1-M4 each.
  • each solar inverter M1-M4 has an inverter module WR, which is connected on the input side to a photovoltaic generator PVA.
  • the solar direct current is converted into a single-phase alternating voltage. For safety reasons - as already shown in the example of the figure - this voltage can be potential-free compared to the voltage level of the photovoltaic generators SM1-SM4.
  • the four solar inverters M1-M4 feed into a phase R, S, T of an electrical network SN in order to achieve an approximately uniform power distribution in this network SN.
  • a network SN is in particular a public 3-phase 50 Hz / 400 V voltage network. With N, all three feeding solar inverters M1-M4 are common neutral.
  • Each M1-M4 solar inverter has a microcontroller ⁇ C as an electronic control unit. This is connected to the inverter module WR via electrical connection lines for controlling, regulating and monitoring or diagnosing the associated inverter module WR.
  • the microcontroller ⁇ C is also connected to a bus interface BA.
  • bus connections are also available as integrated components and tailored to the respective communication bus.
  • a communication bus BUS connects the solar inverters Ml-M4 to one another in terms of data technology, a central control and monitoring device MAS being provided, which is also connected to the communication bus BUS for controlling and monitoring the solar inverters M1-M4.
  • the central control and monitoring device MAS acts as a superordinate "master”, which controls the "slaves", ie the exemplary four solar inverters M1-M4.
  • the central control and monitoring device MAS alone has a grid monitoring device which, at least temporarily, switches off the solar inverters M1-M4 if predetermined grid monitoring criteria are not met, as described at the beginning.
  • the central control and monitoring device MAS advantageously has no power section, e.g. an inverter, but only includes the additional electronic control unit ⁇ C2 required for controlling and monitoring the solar inverters M1-M4 and a bus interface BA for connection to the communication bus BUS.
  • the central control and monitoring device MAS has a display unit DISP and input keys T, by means of which, advantageously, e.g. ongoing operational parameters such as the current electrical feed-in power can be displayed centrally for the entire photovoltaic system PVA.
  • the input keys T it is e.g. possible to make changes to the configuration of the PVA photovoltaic system or to change the DISP operational display.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Photovoltaic Devices (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

L'invention concerne une installation photovoltaïque (PVA) d'alimentation d'un réseau électrique (SN) qui comprend une pluralité d'onduleurs solaires (M1-M4) dont la sortie alimente le réseau électrique et une pluralité de générateurs photovoltaïques (SM1-SM4) connectés chacun à une entrée d'un onduleur solaire. Un bus de communication (BUS) relie les onduleurs solaires de façon à permettre le transfert de données entre eux. Un appareil central de commande et de surveillance (MAS) est également connecté au bus de communication afin de commander et de surveiller les onduleurs solaires et comprend un système (ENS) de surveillance du réseau qui déconnecte au moins temporairement les onduleurs solaires lorsque des critères prédéterminables de surveillance du réseau ne sont pas respectés. Le grand avantage est le fait qu'un appareil central de commande et de surveillance assure exclusivement la surveillance du réseau, ce qui évite que les onduleurs solaires, qui normalement sont modulaires et comprennent chacun leur propre système de surveillance du réseau, ne s'influencent mutuellement, et évite également la déconnexion superflue d'onduleurs solaires individuels.
PCT/EP2005/052311 2004-05-27 2005-05-19 Installation photovoltaique d'alimentation d'un reseau electrique et appareil central de commande et de surveillance d'une installation photovoltaique WO2005117136A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004025923.2 2004-05-27
DE102004025923A DE102004025923A1 (de) 2004-05-27 2004-05-27 Photovoltaikanlage zur Einspeisung in ein elektrisches Netz sowie zentrales Steuer- und Überwachungsgerät für eine Photovoltaikanlage

Publications (2)

Publication Number Publication Date
WO2005117136A2 true WO2005117136A2 (fr) 2005-12-08
WO2005117136A3 WO2005117136A3 (fr) 2006-01-26

Family

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PCT/EP2005/052311 WO2005117136A2 (fr) 2004-05-27 2005-05-19 Installation photovoltaique d'alimentation d'un reseau electrique et appareil central de commande et de surveillance d'une installation photovoltaique

Country Status (2)

Country Link
DE (1) DE102004025923A1 (fr)
WO (1) WO2005117136A2 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1841050A2 (fr) * 2006-01-27 2007-10-03 SMA Technologie AG Procédé pour convertir une tension continue en une tension triphasée
CN100347925C (zh) * 2006-01-06 2007-11-07 清华大学 基于光伏电池的电网功率振荡抑制器
EP1906505A1 (fr) * 2006-09-23 2008-04-02 Kaco Gerätetechnik GmbH Convertisseur et procédé de commande d'un convertisseur
WO2008036990A1 (fr) * 2006-09-28 2008-04-03 Fronius International Gmbh Échange de données entre onduleurs dans un système d'onduleurs
WO2008144540A1 (fr) * 2007-05-17 2008-11-27 Larankelo, Inc. Onduleur réparti et passerelle intelligente
EP2291898A2 (fr) * 2008-05-14 2011-03-09 National Semiconductor Corporation Système et procédé d'intégration de poursuite de point de puissance maximum local dans un système de production d'énergie à poursuite de point de puissance maximum centralisé
WO2011117485A1 (fr) * 2010-03-26 2011-09-29 Watt Consulting Dispositif et méthode pour détecter la performance de panneaux photovoltaïques
CN102611131A (zh) * 2010-12-21 2012-07-25 通用电气公司 用于操作发电系统的方法和系统
US8435056B2 (en) 2009-04-16 2013-05-07 Enphase Energy, Inc. Apparatus for coupling power generated by a photovoltaic module to an output
WO2012154569A3 (fr) * 2011-05-06 2013-08-08 Sunedison Llc Systèmes d'énergie solaire comprenant des concentrateurs de contrôle
DE102012203006A1 (de) * 2012-02-28 2013-08-29 Kaco New Energy Gmbh PV-Wechselrichter, NA-Schutz und PV-System
AU2011203367B2 (en) * 2007-05-17 2013-09-12 Enphase Energy, Inc. Distributed inverter and intelligent gateway
DE102012211605A1 (de) 2012-07-04 2014-01-09 Siemens Aktiengesellschaft Photovoltaikanlage
US8659922B2 (en) 2007-05-17 2014-02-25 Enphase Energy, Inc. Photovoltaic module-mounted AC inverter
AT514384A1 (de) * 2013-05-16 2014-12-15 Fronius Int Gmbh Wechselrichter mit Programmierschnittstelle
USD734653S1 (en) 2012-11-09 2015-07-21 Enphase Energy, Inc. AC module mounting bracket
US9118273B2 (en) 2011-07-18 2015-08-25 Enphase Energy, Inc. Resilient mounting assembly for photovoltaic modules
CN108429282A (zh) * 2018-03-28 2018-08-21 阳光电源股份有限公司 一种中高压光伏发电系统

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US20090020151A1 (en) * 2007-07-16 2009-01-22 Pvi Solutions, Inc. Method and apparatus for converting a direct current to alternating current utilizing a plurality of inverters
JP5498388B2 (ja) * 2007-10-15 2014-05-21 エーエムピーティー， エルエルシー 高効率太陽光電力のためのシステム
EP2071693A3 (fr) 2007-12-12 2015-01-28 Platinum GmbH Procédé et circuit destinés à la commande de l'alimentation en énergie de plusieurs onduleurs monophasés dans un réseau multiphases
DE102008027887A1 (de) 2007-12-12 2009-09-03 Diehl Ako Stiftung & Co. Kg Verfahren und Schaltungsanordnung zum Steuern der Energieeinspeisung von mehreren einphasigen Wechselrichtern in ein Mehrphasennetz
EP2219276B1 (fr) 2009-02-11 2015-12-02 SMA Solar Technology AG Installation photovoltaïque destinée à l'alimentation triphasée dans un réseau d'alimentation en énergie électrique
AT508104B1 (de) 2009-02-12 2015-05-15 Fronius Int Gmbh Photovoltaikanlage mit mehreren wechselrichtern, wechselrichter, usb-massenspeichergerät und verfahren zum durchführen von software-updates an wechselrichtern
EP2337179B1 (fr) 2009-12-21 2012-11-28 SMA Solar Technology AG Alimentation en énergie électrique de sources d'énergie réparties dans l'espace dans un réseau de courant alternatif
US9397497B2 (en) 2013-03-15 2016-07-19 Ampt, Llc High efficiency interleaved solar power supply system

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DE10207560A1 (de) * 2002-02-22 2003-09-04 Kolm Hendrik Verfahren zum Überwachen von dezentralen Energieerzegungsanlagen

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100347925C (zh) * 2006-01-06 2007-11-07 清华大学 基于光伏电池的电网功率振荡抑制器
EP1841050A2 (fr) * 2006-01-27 2007-10-03 SMA Technologie AG Procédé pour convertir une tension continue en une tension triphasée
EP1841050A3 (fr) * 2006-01-27 2009-03-25 SMA Solar Technology AG Procédé pour convertir une tension continue en une tension triphasée
US7576449B2 (en) 2006-01-27 2009-08-18 Sma Solar Technology Ag Method for converting direct voltage into three-phase alternating voltage
USRE44901E1 (en) 2006-01-27 2014-05-20 Sma Solar Technology Ag Method for converting direct voltage into three phase alternating voltage
EP1906505A1 (fr) * 2006-09-23 2008-04-02 Kaco Gerätetechnik GmbH Convertisseur et procédé de commande d'un convertisseur
AU2007302609B2 (en) * 2006-09-28 2011-11-03 Fronius International Gmbh Data interchange between inverters in an inverter system
WO2008036990A1 (fr) * 2006-09-28 2008-04-03 Fronius International Gmbh Échange de données entre onduleurs dans un système d'onduleurs
US8456877B2 (en) 2006-09-28 2013-06-04 Fronius International Gmbh Data exchange between inverters in an inverter system
US10468993B2 (en) 2007-05-17 2019-11-05 Enphase Energy, Inc. Inverter for use in photovoltaic module
US8581441B2 (en) 2007-05-17 2013-11-12 Enphase Energy, Inc. Distributed inverter and intelligent gateway
US11444549B2 (en) 2007-05-17 2022-09-13 Enphase Energy, Inc. Distributed inverter and intelligent gateway
AU2011203367B2 (en) * 2007-05-17 2013-09-12 Enphase Energy, Inc. Distributed inverter and intelligent gateway
US10892619B2 (en) 2007-05-17 2021-01-12 Enphase Energy, Inc. Distributed inverter and intelligent gateway
US8659922B2 (en) 2007-05-17 2014-02-25 Enphase Energy, Inc. Photovoltaic module-mounted AC inverter
JP2010527570A (ja) * 2007-05-17 2010-08-12 エンフェイズ エナジー インコーポレイテッド 分散型インバータ及びインテリジェントゲートウェイ
WO2008144540A1 (fr) * 2007-05-17 2008-11-27 Larankelo, Inc. Onduleur réparti et passerelle intelligente
EP2291898A4 (fr) * 2008-05-14 2013-01-23 Nat Semiconductor Corp Système et procédé d'intégration de poursuite de point de puissance maximum local dans un système de production d'énergie à poursuite de point de puissance maximum centralisé
EP2291898A2 (fr) * 2008-05-14 2011-03-09 National Semiconductor Corporation Système et procédé d'intégration de poursuite de point de puissance maximum local dans un système de production d'énergie à poursuite de point de puissance maximum centralisé
US8435056B2 (en) 2009-04-16 2013-05-07 Enphase Energy, Inc. Apparatus for coupling power generated by a photovoltaic module to an output
FR2958080A1 (fr) * 2010-03-26 2011-09-30 Watt Consulting Dispositif et methode pour detecter la performance de panneaux photovoltaiques
WO2011117485A1 (fr) * 2010-03-26 2011-09-29 Watt Consulting Dispositif et méthode pour détecter la performance de panneaux photovoltaïques
EP2469681A3 (fr) * 2010-12-21 2013-02-27 General Electric Company Procédés et systèmes de fonctionnement d'un système de génération d'énergie
US8614525B2 (en) 2010-12-21 2013-12-24 General Electric Company Methods and systems for operating a power generation system
CN102611131A (zh) * 2010-12-21 2012-07-25 通用电气公司 用于操作发电系统的方法和系统
WO2012154569A3 (fr) * 2011-05-06 2013-08-08 Sunedison Llc Systèmes d'énergie solaire comprenant des concentrateurs de contrôle
US11515835B2 (en) 2011-07-18 2022-11-29 Enphase Energy, Inc. Resilient mounting assembly for photovoltaic modules
US9118273B2 (en) 2011-07-18 2015-08-25 Enphase Energy, Inc. Resilient mounting assembly for photovoltaic modules
DE102012203006A1 (de) * 2012-02-28 2013-08-29 Kaco New Energy Gmbh PV-Wechselrichter, NA-Schutz und PV-System
EP2634888A3 (fr) * 2012-02-28 2014-04-16 KACO new energy GmbH Onduleur PV, protection réseau et installation et système PV
DE102012211605A1 (de) 2012-07-04 2014-01-09 Siemens Aktiengesellschaft Photovoltaikanlage
USD734653S1 (en) 2012-11-09 2015-07-21 Enphase Energy, Inc. AC module mounting bracket
AT514384B1 (de) * 2013-05-16 2019-07-15 Fronius Int Gmbh Wechselrichter mit Programmierschnittstelle
AT514384A1 (de) * 2013-05-16 2014-12-15 Fronius Int Gmbh Wechselrichter mit Programmierschnittstelle
CN108429282A (zh) * 2018-03-28 2018-08-21 阳光电源股份有限公司 一种中高压光伏发电系统
US10938208B2 (en) 2018-03-28 2021-03-02 Sungrow Power Supply Co., Ltd. Medium-high voltage photovoltaic power generation system

Also Published As

Publication number Publication date
WO2005117136A3 (fr) 2006-01-26
DE102004025923A1 (de) 2005-12-22

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