EP2470970A1 - Procédé et dispositif de surveillance d'un composant - Google Patents

Procédé et dispositif de surveillance d'un composant

Info

Publication number
EP2470970A1
EP2470970A1 EP10743106A EP10743106A EP2470970A1 EP 2470970 A1 EP2470970 A1 EP 2470970A1 EP 10743106 A EP10743106 A EP 10743106A EP 10743106 A EP10743106 A EP 10743106A EP 2470970 A1 EP2470970 A1 EP 2470970A1
Authority
EP
European Patent Office
Prior art keywords
receiver
temperature
component
remote monitoring
determined
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP10743106A
Other languages
German (de)
English (en)
Inventor
Roland Busch
Florian Krug
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP2470970A1 publication Critical patent/EP2470970A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S23/79—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with spaced and opposed interacting reflective surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/50—Preventing overheating or overpressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/20—Arrangements for controlling solar heat collectors for tracking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/40—Arrangements for controlling solar heat collectors responsive to temperature
    • 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
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • 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
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking

Definitions

  • the invention relates to a method and an arrangement for monitoring a component which, as part of a solar system, receives and converts solar energy with the aid of a receiver.
  • solar system summarizes systems of different types. These include, for example, so-called “Concentrated Solar Power, CSP” systems, solar thermal systems, “parabolic trough” systems or “Concentrated Solar Power Parabolic Trough” systems. Concentrator photovoltaic or “Concentrated Photovoltaic, CPV" systems are also covered by this term.
  • incident sunlight or solar energy is bundled with the aid of mirrors and fed to a receiver (“receiver”) .
  • the receiver is arranged in a mirror focal point, absorbs the solar energy supplied to it and converts it.
  • the receiver includes, for example, a molten salt and thermal oil as a medium.
  • the bundled solar energy heats the oil or medium that is fed to a heat exchanger.
  • steam is formed in a second circuit via the heat exchanger, which steam is supplied to a steam turbine for the formation of electrical energy.
  • a concentrator photovoltaic or "Concentrated Photovoltaic, CPV" system has a number of substantially planar modules. Each module includes There are a number of mirrors. Each of the mirrors focuses incident sunlight or solar energy on an associated receiver, which converts solar energy directly into electrical energy.
  • the mirrors used are aligned according to the predetermined position of the sun with the aid of automated control. Due to systemic inaccuracies of the control, the mirrors used are no longer optimally aligned with the current position of the sun over time so that the energy system loses its efficiency. Further losses are caused by aging of individual plant components. For example, in parabolic trough systems, the mirror surfaces and the receivers are exposed to environmental factors that contribute to their wear and thus reduce the efficiency. The same applies to the concentrator photovoltaic systems whose components are also adversely affected by environmental factors.
  • Defective components can not be detected in advance in their number. Also, they can not be located in the plant itself.
  • the method according to the invention monitors a component which, as part of a solar system, receives and converts solar energy with the aid of a receiver.
  • the temperature of the receiver of the component is determined.
  • active and passive remote temperature measuring methods can be used.
  • Active temperature measurement methods are preferably based on the so-called "Raman spectroscopy”.
  • a matter to be examined is irradiated with monochromatic light, usually from a laser.
  • FMCW Frequency Modulated Continuous Wave
  • Passive temperature telemetry analyzes the heat radiation emitted by an object.
  • the latter passes outward through the mirrors and can thus be analyzed.
  • infrared remote monitoring is thus preferably used.
  • an IR beam is directed from the remote monitoring system via the associated mirror to the receiver to determine by scanning the outside temperature.
  • microwaves are used.
  • the microwaves are directed as a beam from a remote monitoring system via the associated mirror on the receiver to determine by scanning the outside temperature.
  • the beam is reflected off the surface of the receiver and returned to the remote monitoring system via the mirror.
  • the temperature at the surface of the receiver is determined. As a result, deviations of the determined temperature from a setpoint temperature are easily detectable.
  • the inventive method allows, for example, in a parabolic trough installation to scan or monitor a system line with a length of 10 m to 200 m with only one remote monitoring device.
  • the method according to the invention enables a substantial increase in the lifetime of the system, since defective components can be replaced in a timely manner without damaging the system - with minimal expenditure of personnel and time.
  • FIG. 2 shows the method according to the invention, illustrated on a mirror PS with receiver REC of the parabolic trough installation PRA from FIG. 1,
  • FIG 3 shows a concentrator photovoltaic system in which the method according to the invention finds application
  • FIG 4 shows the orientation of the modules in the system shown in FIG 3
  • FIG 5 is an enlarged detail view of the system shown in FIG 3,
  • FIG. 6 shows the inventive method, shown on a mirror with receiver of the concentrator photovoltaic system of FIG. 3
  • FIG. 1 shows a parabolic trough installation PRA in which the method according to the invention is used.
  • the parabolic trough installation PRA has a number of parabolic mirrors PS which concentrate incident sunlight onto an associated receiver REC.
  • the receiver REC is thus arranged along a focal line of the associated parabolic mirrors PS.
  • the parabolic mirrors PS are arranged in a channel shape and are permanently tracked to the daily running of the sun. As a result, the incident solar radiation is optimally concentrated on the associated receiver REC.
  • the REC receiver consists of a specially coated absorber tube embedded in a vacuum-tight glass tube.
  • the solar radiation acting on the receiver REC heats a thermal oil flowing in the absorber tube to 400 degrees Celsius.
  • the thermal oil is then passed through a heat exchanger, not shown here, to produce water vapor using the heat exchanger in a connected second circuit.
  • the steam is forwarded to a turbine system, not shown here for power generation.
  • Typical power plant outputs range between 25 MW and 200 MW at peak times.
  • individual collector strands or parabolic mirror gutter strands may have a length L of 20 meters to 150 meters depending on the type of construction.
  • the parabolic mirrors PS of the parabolic trough unit PRE are usually only uniaxially adjusted to the position of the sun - they are usually arranged in a north-south direction and the sun is tracked from east to west during the course of the day.
  • FIG. 2 shows the method according to the invention, illustrated on a mirror PS with receiver REC of the parabolic trough installation PRA from FIG. 1.
  • Incident sunlight SL is focused by means of the mirror PS on the receiver REC.
  • Infrared signals or microwave signals are directed as Messsigna- Ie MS from a remote monitoring system FUW not shown here on the associated mirror PS to the receiver REC.
  • the measurement signal MS is selectively directed to the receiver REC.
  • the measurement signal MS is reflected by the surface of the receiver REC and passes back via the mirror PS back to the remote monitoring system FUW.
  • an optimized alignment of the mirror PS on the daily level can then be carried out by regulation in order to increase the system performance.
  • the defective or aged system parts can then be exchanged.
  • an active temperature remote monitoring was used and described, but of course, a passively configured temperature remote monitoring can be used, which analyzes the heat radiation reflected by the receiver to the outside.
  • FIG 3 shows a concentrator photovoltaic system CPV, in which the inventive method is used.
  • the plant CPV here has a number of 5 modules MOD in a horizontal arrangement (row) and a number of 6 modules MOD in a vertical arrangement (column).
  • Each module MOD includes a number of mirrors, as will be illustrated in the following figures. In the CPV system shown here, the mirrors are aligned according to the position of the sun using automated control. By controlling all 5 * 6 modules MOD simultaneously tracked via a module carrier of the sun.
  • the modules MOD are preferably pivoted about the associated module carrier about a first axis EA in order to align the mirrors of the associated modules with the position of the sun.
  • the modules MOD are pivoted about the associated module carrier about a second axis ZA in order to align the mirrors of the associated modules with the position of the sun.
  • FIG 5 shows an enlarged detail of the system shown in FIG 3.
  • FIG. 6 shows the method according to the invention, illustrated on mirrors PS1, PS2 with associated receiver REC 61 of the embodiment CPV from FIG. 3.
  • Incident sunlight SL is focused onto a receiver REC 61 by means of a first mirror PSl and by means of a second mirror PS2.
  • an optical element in particular a prism or an optical element called “optical rod”, is additionally used in order to optimize the focusing on the receiver REC 61.
  • the receiver REC 61 is configured as a semiconductor or as a photovoltaic element and converts the sunlight SL or its solar energy bundled onto it directly into electrical energy.
  • Infrared signals or microwave signals are directed as measurement signals MS from a remote monitoring system FUW not shown here via the associated mirrors PSL, PS2 to the receiver REC 61.
  • the measuring signal MS is reflected by the receiver REC 61 and returns via the two mirrors PS1, PS2 back to the remote monitoring system FUW.
  • an entire module is preferably scanned flat by means of the measurement signal MS in order to determine a representative temperature of the entire module.
  • an optimized alignment to the daily level can be achieved by regulation.
  • the defective or aged system parts can then be exchanged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Radiation Pyrometers (AREA)

Abstract

Procédé et dispositif de surveillance d'un composant qui, en tant que partie constitutive d'une installation solaire, reçoit de l'énergie solaire à l'aide d'un récepteur et convertit ladite énergie. La mise en oeuvre d'un procédé de télésurveillance permet de déterminer la température du récepteur du composant. Un réglage ou une correction du composant est alors effectué en fonction de la température.
EP10743106A 2009-08-26 2010-08-11 Procédé et dispositif de surveillance d'un composant Withdrawn EP2470970A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009038883A DE102009038883A1 (de) 2009-08-26 2009-08-26 Verfahren und Anordnung zur Überwachung einer Komponente
PCT/EP2010/061689 WO2011023553A1 (fr) 2009-08-26 2010-08-11 Procédé et dispositif de surveillance d'un composant

Publications (1)

Publication Number Publication Date
EP2470970A1 true EP2470970A1 (fr) 2012-07-04

Family

ID=43301828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10743106A Withdrawn EP2470970A1 (fr) 2009-08-26 2010-08-11 Procédé et dispositif de surveillance d'un composant

Country Status (4)

Country Link
US (1) US20120158186A1 (fr)
EP (1) EP2470970A1 (fr)
DE (1) DE102009038883A1 (fr)
WO (1) WO2011023553A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109347959B (zh) * 2018-10-24 2021-10-26 九州能源有限公司 一种光伏电站移动监控系统
CN114614768B (zh) * 2022-05-12 2022-07-26 武汉新能源研究院有限公司 一种光伏电池板热斑故障监测报警系统及方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5785426A (en) * 1994-01-14 1998-07-28 Massachusetts Institute Of Technology Self-calibrated active pyrometer for furnace temperature measurements
US6926440B2 (en) * 2002-11-01 2005-08-09 The Boeing Company Infrared temperature sensors for solar panel
US20080308154A1 (en) * 2007-06-06 2008-12-18 Green Volts, Inc. Reflective secondary optic for concentrated photovoltaic systems
US8931475B2 (en) * 2008-07-10 2015-01-13 Brightsource Industries (Israel) Ltd. Systems and methods for control of a solar power tower using infrared thermography

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011023553A1 *

Also Published As

Publication number Publication date
DE102009038883A1 (de) 2011-03-10
US20120158186A1 (en) 2012-06-21
WO2011023553A1 (fr) 2011-03-03

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