EP0534950A1 - Procede de regulation du dispositif d'alimentation en courant d'un filtre electrique. - Google Patents

Procede de regulation du dispositif d'alimentation en courant d'un filtre electrique.

Info

Publication number
EP0534950A1
EP0534950A1 EP90905427A EP90905427A EP0534950A1 EP 0534950 A1 EP0534950 A1 EP 0534950A1 EP 90905427 A EP90905427 A EP 90905427A EP 90905427 A EP90905427 A EP 90905427A EP 0534950 A1 EP0534950 A1 EP 0534950A1
Authority
EP
European Patent Office
Prior art keywords
filter
current
measuring
electrostatic
voltage
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.)
Granted
Application number
EP90905427A
Other languages
German (de)
English (en)
Other versions
EP0534950B1 (fr
Inventor
Gerhard Doenig
Roland Huempfner
Norbert Grass
Hans-Joachim Knaak
Franz Neulinger
Helmut Schummer
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 EP0534950A1 publication Critical patent/EP0534950A1/fr
Application granted granted Critical
Publication of EP0534950B1 publication Critical patent/EP0534950B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/66—Applications of electricity supply techniques
    • B03C3/68—Control systems therefor
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S323/00—Electricity: power supply or regulation systems
    • Y10S323/903—Precipitators

Definitions

  • the invention relates to a control method for the power supply device of an electrostatic precipitator, which consists of an intermediate circuit converter equipped with a measuring and control unit with a downstream high-voltage transformer.
  • This type of setpoint specification has disadvantages: its reliability and accuracy depends on the experience and attention of the operating personnel, and it leads to high personnel costs. Particularly because of stricter environmental laws (e.g. TA McDonald), it is necessary to operate the electrostatic filter optimally. Since the breakdown voltage of the filter changes during operation, the setpoints have to be determined and adapted again and again for optimal operation. Due to the rapidity of the change in the breakdown voltage, a constant setpoint adjustment is not possible even for trained personnel.
  • the object of the present invention is to avoid the secondary measurement at high voltage.
  • Another object of the invention is to accelerate and automate the setpoint value setting, so that the electrostatic filter is optimally controlled and environmental protection requirements are thereby met.
  • Automation is also intended to save personnel costs.
  • the object is achieved in that the measurement and control unit measures values on the primary side and automatically determines states on the secondary side from the values measured on the primary side.
  • actual values e.g. B. the primary voltage, measured, it is u.
  • the secondary-side actual values are calculated from the primary-side actual values of voltage and current, and the electric filter is hereby checked for filter breakdown and filter short-circuit.
  • the electrostatic precipitator can be operated with direct current, with current pulses or with a combination of both.
  • the Breaks between two pulses created several small measuring pulses in order to be able to measure sensible values on the primary side even during the pulse breaks.
  • a filter characteristic is recorded, this filter characteristic is evaluated, and new setpoints, for example, B. for the DC link current.
  • the new setpoints are calculated in an automation unit superordinate to the measuring and control unit.
  • the FIG shows schematically an arrangement for carrying out the control process and the management process for specifying the setpoint.
  • An intermediate circuit converter 2 equipped with a measuring and control unit 1 feeds a high-voltage transformer 3, the output voltage of which is applied to an electric filter 5 via a rectifier 4.
  • the measuring and control unit 1 is connected to a higher-level automation unit 6.
  • the higher-level automation unit 6 can e.g. B. a programmable logic controller (Siemens S5) or a personal computer.
  • the measuring and control unit 1 measures or determines continuously - z. B. every millisecond - DC link current and primary voltage on the primary side and determines the filter current and filter voltage from these variables.
  • the filter voltage changes from one measurement or calculation to the other from a value above a predetermined, changeable minimum value, e.g. B. 5 kV, to less than a predetermined variable percentage, z. B. 25%, it is detected on filter breakdown. If the filter voltage is within a predefined, changeable breakdown waiting time between 0 and 200 ms, e.g. B. 100 ms, increases again above this percentage, the counter for self-extinguishing breakthroughs is increased by one in the measuring and control unit 1. Otherwise the counter for non-self-extinguishing breakthroughs is increased by one and a deionization reaction is initiated. The filter 5 is then recharged.
  • a predefined, changeable breakdown waiting time between 0 and 200 ms, e.g. B. 100 ms
  • a filter current flows which is greater than a predetermined, variable minimum current, e.g. B. 10% of the maximum current is detected on filter short circuit and the current supply in the intermediate circuit of the intermediate circuit converter 2 for a predetermined, changeable waiting time of z. B. locked for 500 ms.
  • the time of the filter short circuit is also saved.
  • the filter 5 is then recharged. If the number of filter shorts exceeds during a predetermined, changeable time period, e.g. B. a minute, a predetermined, changeable maximum number, z. B. 10, it is recognized for permanent short-circuit and the electrostatic filter 5 is switched off.
  • 6 commands and any necessary parameters are transmitted from the higher-level automation unit to the measuring and control unit 1. These commands can be:
  • the measuring and control unit 1 When the measuring and control unit 1 receives the command to record the characteristic curve, the measuring and control unit 1 interrupts the normal operation of the electrostatic filter 5 and takes the filter characteristic curve and transmits the data to the higher-level automation unit 6.
  • the automation unit 6 displays the filter characteristic on a monitor (not shown), evaluates the transmitted data and transmits new setpoints to the measuring and control unit 1.
  • New setpoints can can be specified for all changeable values. Examples include:
  • the filter characteristic is shown as a function of the filter voltage as a function of the filter current. If the electrostatic filter is operated with current pulses, the filter voltage is shown as a function of time as the filter characteristic.
  • small measuring pulses applied to the electrostatic filter 5. This is always necessary in pulse mode not only during the recording of the characteristic curve, since otherwise the electrostatic filter 5 is decoupled from the high-voltage transformer 3 by the rectifier 4 during the pulse pauses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Electrostatic Separation (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Protection Of Transformers (AREA)
  • Networks Using Active Elements (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Laminated Bodies (AREA)
  • Paper (AREA)
  • Dc-Dc Converters (AREA)
  • Protection Of Static Devices (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

Un procédé permet de régler le dispositif d'alimentation en courant d'un filtre électrique (5) composé d'un mutateur indirect (2) pourvu d'une unité de mesure et de commande (1) et relié en amont d'un transformateur de haute tension (3). L'unité de mesure et de commande (1) mesure des valeurs du côté primaire et détermine automatiquement les états du côté secondaire sur la base des valeurs mesurées du côté primaire.
EP90905427A 1990-04-04 1990-04-04 Procede de regulation du dispositif d'alimentation en courant d'un filtre electrique Expired - Lifetime EP0534950B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE1990/000262 WO1991015297A1 (fr) 1990-04-04 1990-04-04 Procede de regulation du dispositif d'alimentation en courant d'un filtre electrique

Publications (2)

Publication Number Publication Date
EP0534950A1 true EP0534950A1 (fr) 1993-04-07
EP0534950B1 EP0534950B1 (fr) 1995-07-26

Family

ID=6849945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90905427A Expired - Lifetime EP0534950B1 (fr) 1990-04-04 1990-04-04 Procede de regulation du dispositif d'alimentation en courant d'un filtre electrique

Country Status (8)

Country Link
US (1) US5471377A (fr)
EP (1) EP0534950B1 (fr)
JP (1) JPH05505137A (fr)
AT (1) ATE125470T1 (fr)
DE (2) DE59009450D1 (fr)
DK (1) DK0534950T3 (fr)
ES (1) ES2075201T3 (fr)
WO (1) WO1991015297A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569838A1 (fr) * 1992-05-15 1993-11-18 Siemens Aktiengesellschaft Procédé de mise en oeuvre et dispositif pour un filtre électrostatique
FR2723438B1 (fr) * 1994-08-02 1996-09-20 Lorraine Carbone Reacteur de pompe a chaleur chimique a puissance amelioree
DE19501901B4 (de) * 1995-01-23 2006-08-17 Siemens Ag Verfahren zur Regelung des Filterstromes eines Elektrofilters
WO1998019962A1 (fr) * 1996-11-05 1998-05-14 Philips Electronics N.V. Generateur de haute tension a reglage de tension base sur le courant de decharge
US6574123B2 (en) 2001-07-12 2003-06-03 Engineering Dynamics Ltd Power supply for electrostatic air filtration
DE10214185A1 (de) * 2002-03-28 2003-10-16 Siemens Ag PC-Anordnung für Visualisierungs-, Diagnose- und Expertensysteme zur Überwachung und Steuerung bzw. Regelung von Hochspannungsversorgungseinheiten von Elektrofiltern
DE10328586A1 (de) * 2003-06-25 2005-01-20 Siemens Ag Elektrostatisches Filter mit Durchschlagerkennung
US7081152B2 (en) * 2004-02-18 2006-07-25 Electric Power Research Institute Incorporated ESP performance optimization control
DE102004036210B4 (de) * 2004-07-26 2006-08-31 Siemens Ag Steuereinrichtung sowie Steuerverfahren für Elektrofilter mit einer konfigurierbaren Anzahl paralleler und serieller Filterzonen
US7452403B2 (en) * 2005-12-29 2008-11-18 General Electric Company System and method for applying partial discharge analysis for electrostatic precipitator
US7357828B2 (en) * 2006-07-17 2008-04-15 Oreck Holdings Llc Air cleaner including constant current power supply
US7625424B2 (en) * 2006-08-08 2009-12-01 Oreck Holdings, Llc Air cleaner and shut-down method
US7655068B2 (en) * 2007-06-14 2010-02-02 General Electric Company Method and systems to facilitate improving electrostatic precipitator performance

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB976686A (en) * 1963-03-22 1964-12-02 Tudor Ab Improved circuit arrangement for the control of electrostatic precipitators
DE1557061B2 (de) * 1966-01-18 1976-05-13 Fuji Electric Co., Ltd., Kawasaki, Kanagawa (Japan) Einrichtung zum regeln der spannung eines elektroabscheiders
DE3017685A1 (de) * 1980-05-08 1981-11-12 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zum regeln der spannung eines in einer anlage eingesetzten elektrofilters
DE3246057A1 (de) * 1982-12-13 1984-06-14 Metallgesellschaft Ag, 6000 Frankfurt Einrichtung zur spannungsversorgung eines elektrofilters
US4605424A (en) * 1984-06-28 1986-08-12 Johnston David F Method and apparatus for controlling power to an electronic precipitator
DE3511622A1 (de) * 1985-03-29 1986-10-09 Metallgesellschaft Ag, 6000 Frankfurt Verfahren und einrichtung zur versorgung eines elektroabscheiders mit hochspannungsimpulsen
DE3522569A1 (de) * 1985-06-24 1987-01-02 Metallgesellschaft Ag Stromversorgung fuer ein elektrofilter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9115297A1 *

Also Published As

Publication number Publication date
EP0534950B1 (fr) 1995-07-26
ES2075201T3 (es) 1995-10-01
JPH05505137A (ja) 1993-08-05
DK0534950T3 (da) 1995-12-18
DE4108811A1 (de) 1991-10-10
ATE125470T1 (de) 1995-08-15
WO1991015297A1 (fr) 1991-10-17
US5471377A (en) 1995-11-28
DE59009450D1 (de) 1995-08-31

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