EP1002449A1 - Procede et dispositif pour maintenir a un niveau constant le courant d'un circuit en serie d'installations de balisage installees sur des aeroports ou similaires - Google Patents

Procede et dispositif pour maintenir a un niveau constant le courant d'un circuit en serie d'installations de balisage installees sur des aeroports ou similaires

Info

Publication number
EP1002449A1
EP1002449A1 EP98946255A EP98946255A EP1002449A1 EP 1002449 A1 EP1002449 A1 EP 1002449A1 EP 98946255 A EP98946255 A EP 98946255A EP 98946255 A EP98946255 A EP 98946255A EP 1002449 A1 EP1002449 A1 EP 1002449A1
Authority
EP
European Patent Office
Prior art keywords
series circuit
controller
current
actual value
circuit current
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Withdrawn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
EP98946255A
Other languages
German (de)
English (en)
Inventor
Helmut Schmidt
Hans-Joachim Von Stednitz
Manfred Bete
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of EP1002449A1 publication Critical patent/EP1002449A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/18—Controlling the light source by remote control via data-bus transmission

Definitions

  • airfields must be equipped with airfield lighting systems for operation at night or in poor visibility.
  • lighting systems serve as visual navigation aids for the pilot.
  • Lighting systems for major airports include various lighting systems that are used to mark the approach sector, the runways, the taxiways and forerunners.
  • additional devices are used, for example taxiway signposts, parking aids, wind direction indicators and the like. All of these systems can be switched separately, and each individual system can also include differently switchable fires, for example the approach lights include approach flashlights for optically highlighting the approach center line and threshold, high-performance lights for approach, threshold and runway end, precision approach - Sliding angle fire for high light outputs and sharp red-white transition and the like.
  • the individual lighting systems usually extend over several kilometers and require a corresponding cable network.
  • the individual lighting devices are operated in series in order to exclude differences in intensity of the connected lighting devices at the beginning and end of the line, which would be the case with lighting devices operated in parallel due to the high voltage drop given these cable lengths.
  • the individual lamps are each supplied via a lamp or series circuit transformer.
  • the lamp transformers for feeding the light sources of the lighting devices are connected in series in a series circuit and operated with a constant current. The transformers therefore have the character of current transformers with a fixed, predefinable current transmission ratio.
  • the light intensity of the lighting systems must be able to be adapted at any time to the visibility prevailing when the aircraft is taking off or landing.
  • the light intensity is adjusted by means of control and regulating devices.
  • the intensity value once set must be kept constant regardless of mains voltage fluctuations or the failure of individual lamps in the series circuit.
  • Constant current regulators are used to keep the current constant in series circuits of lighting systems at airfields.
  • international current directives and recommendations and in particular country-specific requirements must be met. So far, aerodrome constant current controllers that meet these requirements have been designed as an independent electronic module, comprising an analog and / or digital control and / or regulating part and a thyristor-based power part.
  • the series circuit current is regulated via a phase control.
  • the ignition timing of the thyristors operating in anti-parallel connection is adjusted.
  • the supply transformers required to supply a series circuit are separated from the electronic assembly and are installed in a separate as well as in the same supply cabinet as the constant current regulator.
  • Programmable logic controllers are increasingly being used to control and monitor the operation of the individual lighting systems of a lighting system.
  • the object of the present invention is to outsource the control and regulating tasks of the control and regulating electronics of a constant current regulator and to have them carried out by an already existing, higher-level control system, in order to improve the control and regulation with regard to operational reliability and to have a modular, compact structure To enable lighting systems.
  • the method according to the invention creates the possibility of outsourcing control and regulating tasks of the control and regulating electronics of a constant current regulator in such a way that the control and regulation are improved with regard to operational safety and, at the same time, there is a modular, compact construction of lighting systems.
  • a current recorded as the actual value is supplied to a controller device in a digitally converted manner makes it possible to outsource the controller device without having to accept the losses of longer transmission times that would otherwise occur, for example, in analog lines. So there are all the advantages that come with digital transmission, such as a higher signal transmission speed, a lower susceptibility to signal interference, a higher signal reproduction. ornamental and the like.
  • the controller device can thus advantageously be arranged decentrally.
  • a programmable logic controller is used as the controller device. Since programmable controls are increasingly being used to control and monitor the operation of the lighting systems for switching the lighting systems, the brightness levels, the landing directions and the like, as well as for the clear feedback of actual operating states, costs can be reduced and existing control components can be used even more effectively and in a more versatile manner control parameters are also used in other ways by the programmable logic controller, for example visualized.
  • a model of the SIMATIC series from Siemens is preferably used as the programmable logic controller, which enables extremely simple communication between various components and assemblies, for example via bus systems, in particular Profibus and the like.
  • a digital control algorithm of the programmable logic controller is used as the control device.
  • the constant current controller according to the invention thus consists of controller-specific software that runs on a programmable logic controller.
  • the use of standardized hardware, easily changeable software and the possibility of data storage and visualization are advantageous. For example, all tax, regulation and
  • Monitoring functions can be stored in an adjustable manner, for example in an EPROM, on a floppy disk or another memory.
  • the current proportional to the lamp current is advantageously supplied to an actual value acquisition unit via at least one converter.
  • Actual value converters, matching converters and the like can be used as converters, for example.
  • a particular advantage here is a separation from the series circuit current, so that the series circuit current is influenced by the actual value acquisition.
  • the actual value is advantageously converted into an effective value, which is digitally supplied to the controller device for determining the manipulated value.
  • An RMS module or an RMS converter can be used to implement this.
  • FIG. 1 shows a schematic representation of an airfield lighting system and FIG. 1 shows the basic structure of a constant current controller according to the present invention.
  • the runway 1 shows a schematic illustration of the basic structure of an airfield lighting system 1 with a runway 2, a runway field 3 and a tower 4.
  • approach lighting by means of an approach flash light 5 is shown as an example.
  • the runway 2 has a center line lighting system, exemplified by an underfloor fire for approach center lines 6, and a runway edge lighting system, illustrated here by two high-performance lights for the runway edge 7.
  • the runway field 3 here has, for example, runway edge lights and runway center line lights shown by a runway edge fire 8 and runway centerline underfloor light 9 and stop bars 10 shown by underfloor fire for stop bars not shown here.
  • Tower 4 shows a main control point 11, which has a control device 12, for example a programmable logic controller, with an operating keyboard 13 and a display 14, here a monitor.
  • a control device 12 for example a programmable logic controller
  • keyboard 13 for example a keyboard
  • display 14 here a monitor.
  • a computer 16 with a monitor 17, keyboard 18 and
  • the control device 12 of the main control point 11 can thus via further connections 20 are connected to further substations, not shown here.
  • bus systems or couplings such as Profibus, wireless connections, for example by radio or infrared, can also be used as connections 20 for the transmission of control and signal signals.
  • the substation 21 has an energy supply device 22, shown schematically here, which can be connected both to a conventional supply network 23 and to an emergency power supply 24.
  • the substation has control points 25 connected to the control device 12 of the main control point via a connection 20, one of which is shown here by way of example.
  • the control point 25 has a control device 26 for controlling and monitoring the operating states of the connected lighting systems.
  • the consumers here the high-performance lights for the runway and runway edge 7, are operated by means of a cable 29 in series-connected lamp transformers, which in turn are supplied with a constant current by means of the constant current regulator 27.
  • the exact structure and the method on which the constant current regulator according to the invention is based are explained below with reference to the basic structure of a constant current regulator according to the invention shown in FIG.
  • the constant current controller 30 is a modular system, consisting of a programmable logic controller 31, for example a SIMATIC S7, with controller-specific software, input and output modules 32 of the programmable logic controller 31, an actual value acquisition module 33, and a marshalling module. group 34 and a thyristor controller 35, the power section of which is connected on the primary side to a feed transformer 36.
  • lamp transformers 28 of a lighting system connected in series are connected on the secondary side of the feed transformer 36. Furthermore, the secondary side of the feed transformer 36 has an overvoltage or lightning protection 46.
  • a measuring current proportional to the series circuit current comes from a current transformer 37 connected on the secondary side of the feed transformer 36 and is supplied as an actual value to the actual value detection module 33 via an actual value converter (not shown here) and a matching converter.
  • the actual value acquisition module converts this actual value into an effective value, if necessary after filtering.
  • an actual value proportional to the series circuit current is passed on via the distribution distributor 34 to a digital input and output module 32 of the programmable controller 31. Furthermore, peak current overshoots and the like can be determined via the current detection.
  • the switching distributor 34 is used for simple connection of the programmable logic controller 31, the actual value acquisition module 33 and the thyristor controller 35 by means of plug cables.
  • a digital control algorithm of a controller module 38 forms one from the digital effective value of the actual value acquisition and a predeterminable target value of the series circuit current
  • the thyristor controller 35 sets the digital setpoint of the digital controller module 38 of the programmable logic controller 31 by means of phase angle control with two anti- parallel thyristors into a voltage value for the feed transformer 36, at which the desired series circuit current is then established on the secondary side.
  • the series circuit current specified with the setpoint is kept constant by the current flow angle, which adapts to the setpoint, irrespective of laser changes in the secondary series circuit and voltage fluctuations in the primary network.
  • the intensity of the light of the lamps 39 of the respective lighting system which can be predetermined with the target value is thus also constant.
  • the programmable logic controller 31 also has an operating panel 40, which is used for operating and fault display and for on-site control of the programmable logic controller 31.
  • the specifiable setpoint flows as well as the currently detected actual value flows and the like can be displayed on the control panel.
  • the control panel 40 is connected to the programmable logic controller 31 via digital inputs or bus systems 41, via which external control signals can also be fed to the programmable logic controller 31 via the connection identified here by 42, for example a bus system.
  • a signal exchange between different control devices can take place via the connection 42.
  • a further control keyboard along with displays 43 for parallel control is also connected via the distribution distributor 34.
  • the displays can, for example, visualize the series circuit current, the setting angle of the leading edge control as well as operating and fault messages.
  • the lamps 39 of the lighting system can be switched on and off via the control modules 28.
  • the parallel control can also be used, for example an operating keyboard and displays 43 of the series circuit current can be set.
  • 40 errors can be simulated on site with the control panel.
  • Various programmable monitoring functions for example overcurrent, actual value failure, capacitive series circuit current, permanent exceeding of the crest factor, thyristor monitoring and the like, can also be carried out with the programmable logic controller 31, which, for example, switches off the supply transformer via the load contactor 44 shown in FIG. 2 in the event of a fault.
  • the programmable logic controller 31 here has two further controller modules 45 as an example, so that in principle several power units can be operated by one programmable logic controller 31 and a corresponding number of conventional constant current control units can thus be replaced.
  • the present invention makes it possible to outsource the control and regulating electronics of a conventional constant current regulator. Furthermore, the power section of the thyristor controller can be mechanically connected directly to the feed transformer 36 and can thus be constructed in a very compact manner.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

L'invention vise à permettre le transfert du système électronique de commande et de régulation d'un régulateur à courant constant. A cet effet, il est prévu, selon l'invention, un procédé servant à maintenir à un niveau constant le courant d'un circuit en série d'installations de balisage installées sur des aéroports ou similaires. Selon ce procédé, un courant proportionnel au courant du circuit en série est détecté en tant que valeur réelle, côté secondaire d'un transformateur d'alimentation (36) comprenant, côté secondaire, un transformateur (28) monté en série et servant à alimenter des lampes (39). Ce courant, une fois converti numériquement, est ensuite acheminé à une unité de régulation pour permettre la détermination d'une valeur servant à réguler un régulateur à thyristor (35) monté côté primaire du transformateur d'alimentation (36) et servant à régler le courant du circuit en série côté secondaire. L'invention concerne en outre un dispositif pour mettre en oeuvre ledit procédé.
EP98946255A 1997-08-05 1998-08-05 Procede et dispositif pour maintenir a un niveau constant le courant d'un circuit en serie d'installations de balisage installees sur des aeroports ou similaires Withdrawn EP1002449A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19733908 1997-08-05
DE19733908 1997-08-05
PCT/DE1998/002245 WO1999008489A1 (fr) 1997-08-05 1998-08-05 Procede et dispositif pour maintenir a un niveau constant le courant d'un circuit en serie d'installations de balisage installees sur des aeroports ou similaires

Publications (1)

Publication Number Publication Date
EP1002449A1 true EP1002449A1 (fr) 2000-05-24

Family

ID=7838082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98946255A Withdrawn EP1002449A1 (fr) 1997-08-05 1998-08-05 Procede et dispositif pour maintenir a un niveau constant le courant d'un circuit en serie d'installations de balisage installees sur des aeroports ou similaires

Country Status (3)

Country Link
EP (1) EP1002449A1 (fr)
PL (1) PL338142A1 (fr)
WO (1) WO1999008489A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6300878B1 (en) * 2000-01-13 2001-10-09 Cooper Industries, Inc. Constant current regulator using IGBT control
ITBO20060086U1 (it) * 2006-10-11 2008-04-12 Ocem Spa Unita' di regolazione della corrente in un circuito composto da sorgenti di illuminazione poste in serie
EP2720516A1 (fr) * 2012-10-09 2014-04-16 Toshiba Lighting & Technology Corporation Dispositif de commande de charge et appareil d'éclairage
US10516294B2 (en) 2015-02-09 2019-12-24 Eaton Intelligent Power Limited Uninterruptible constant current regulator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1299601A (en) * 1969-10-24 1972-12-13 Plessey Co Ltd Improvements in or relating to alternating current regulator arrangements
JPS55139795A (en) * 1979-04-19 1980-10-31 Tokyo Shibaura Electric Co Core disconnector detector for series firing circuit
SE462698B (sv) * 1988-10-07 1990-08-13 Swedish Airport Technology Han Faeltljusanlaeggning foer flygplats
SE467132B (sv) * 1989-09-14 1992-05-25 Swedish Airport Technology Han Faeltljusanordning
JPH04174997A (ja) * 1990-11-08 1992-06-23 Toshiba Corp 灯火断芯検出装置
IT1256123B (it) * 1992-07-22 1995-11-29 Sistema di controllo automatico delle luci di un impianto di illuminazione a circuito serie,in particolare delle lampade di segnalazione aereoportuali.
JP3205762B2 (ja) * 1993-07-14 2001-09-04 シャープ株式会社 系統連系型インバータ制御装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9908489A1 *

Also Published As

Publication number Publication date
WO1999008489A1 (fr) 1999-02-18
PL338142A1 (en) 2000-09-25

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