Control device and control method for an electrostatic filter with a configurable number of parallel and serial filter zones

• US 7,736,418 B2
• Filed: 07/21/2005
• Issued: 06/15/2010
• Est. Priority Date: 07/26/2004
• Status: Active Grant

• Current Assignee: Siemens Energy Global GmbH & Co. KG (Siemens AG)
• Original Assignee: Siemens AG
• Inventors: Grass, Norbert
• Primary Examiner(s): Chiesa; Richard L
• Application Number:
  US11/658,530
• Publication Number:
  US 20090260520A1
• Time in Patent Office: 1,790 Days
• Field of Search: 95 2- 7, 96 18- 26, 96/73, 96 80- 82, 700/2, 700/17, 700/19, 700/273, 700/276, 700/277, 323/903
• US Class Current: 95/2
• CPC Class Codes: B03C 3/68 Control systems therefor electricity supply or control systems for cleaning the electrodes B03C3/746, B03C3/763
• CPC Class Codes: Y10S 323/903 Precipitators

Abstract

The aim of the invention is to be able to adapt an item of visualization or optimization software with the least possible amount of effort made on any electrostatic filter configurations. To this end, the invention provides that the electrostatic filter, the high-voltage supply units, and the auxiliary functional units can be used by the software modules in the server component as objects with characteristic features and with characteristic methods, that are capable of being accessed as information, which only exists in the server component, for the client modules via data interfaces.

Claims

1. An electrostatic precipitator, comprising:

a plurality of configurable parallel and serial precipitator zones;

a plurality of high-voltage supply units each assigned to one of the plurality of zones;

a plurality of auxiliary functional units each assigned to one of the plurality of zones; and

a control entity having a server component and a client module, the control entity incorporating different software modules allowing access to data of the electrostatic precipitator, the high-voltage supply units, and the auxiliary functional units so data can be visually displayed, stored or used as a basis for optimizing the electrostatic precipitator operation,

wherein the electrostatic precipitator, the high-voltage supply units and the auxiliary functional units are set-up via the server component of the control entity, by the software modules, as objects having characteristic properties and characteristic methods, where the objects are accessible by the client modules via data interfaces as information present only in the server component.

2. The electrostatic precipitator as claimed in claim 1, wherein the auxiliary functional units are selected from the group consisting of:

discharge wire rappers, insulator heaters, purge air fans, purge air heaters, high-voltage rectifiers, collecting plate rappers, dust hopper heaters, dust hopper fill-level indicators, dust extractors and combinations thereof.

3. The electrostatic precipitator as claimed in claim 2, wherein characteristic properties of the electrostatic precipitator object present on the server component comprises:

a name or an identification of the electrostatic precipitator, and/or

a number relating to the zones of the electrostatic precipitator, and

a position relating to the zones in the electrostatic precipitator, and/or

an assignment of the high-voltage supply units to the precipitator zones, and/or

a planned emission value of the electrostatic precipitator, and

an actual emission value of the electrostatic precipitator, and/or

an assignment of the planned and actual emission values to precipitator zones of the electrostatic precipitator, and/or

process values of the electrostatic precipitator, and/or

a current optimization mode of the electrostatic precipitator, and/or

a current operating mode.

4. The electrostatic precipitator as claimed in the claim 3, wherein characteristic methods of the electrostatic precipitator object present on the server component are determined in the electrostatic precipitator object present on the server component and comprise a total electrical power or a partial electrical powers of the serial and parallel precipitator zones.

5. The electrostatic precipitator as claimed in claim 2, wherein characteristic properties of the high-voltage supply units objects present on the server component comprise:

a name or the identification of the respective high-voltage supply unit, and/or

a planned value for voltage, a current and a power at the respective high-voltage supply unit, and

an actual value for voltage, the current and the power at the respective high-voltage supply unit, and

a status report of the respective high-voltage supply units, and/or

an error report of the respective high-voltage supply units, and/or

process signals and associated scaling that are specified at the control entity, and/or

an operating parameter set at the respective high-voltage supply unit.

6. The electrostatic precipitator as claimed in claim 5, wherein the process signals are 0 to 20 mA signals.

7. The electrostatic precipitator as claimed in claim 5, wherein the characteristic methods of the high-voltage supply unit objects present on the server component are determined in the respective high-voltage supply unit object and comprise:

average power values over defined time periods, and/or

switching actions with a remote indication, and/or

error acknowledgements, and/or

process temperature values in degrees Celsius, and/or

the setting of planned values and/or

the selection of operating modes, wherein the operating modes are selected from the group consisting of;

optimization, oscilloscope start-up, and recording the U/I characteristic curve.

8. The electrostatic precipitator as claimed in claim 7, wherein individual objects derived from the electrostatic precipitator objects or high-voltage supply unit objects or auxiliary functional unit class are creatable by the client modules.

9. The electrostatic precipitator as claimed in claim 8, wherein classes are definable by optimization programs of the client modules, where one or more precipitator zones of the electrostatic precipitator are represented by the classes.

10. A control method for electrostatic precipitators, comprising:

configuring a plurality of parallel and serial precipitator zones;

assigning a high-voltage supply unit and an auxiliary functional unit to each of the plurality of parallel and serial precipitator zones; and

accessing a data of the electrostatic precipitators, the high-voltage supply units and the auxiliary functional units by different software modules so the data can be visually displayed, stored or used as a basis for optimizing the electrostatic precipitator operation,

wherein the electrostatic precipitator, the high-voltage supply units and the auxiliary functional units are set-up via only one server component of a control entity, by the software modules, as objects having characteristic properties and characteristic methods, and that client modules of the control entity access the objects, which have been set up solely in the server component, via data interfaces.

11. The control method as claimed in claim 10, wherein the auxiliary functional units are selected from the group consisting of:

discharge wire rappers, insulator heaters, purge air fans, purge air heaters, high-voltage rectifiers, collecting plate rappers, gas distribution hoppers, dust hopper heaters, dust hopper fill-level indicators and dust extractors of the electrostatic precipitators.

12. The control method as claimed in claim 11, wherein characteristic properties of the electrostatic precipitator object present on the server component comprise:

a name or an identification of the electrostatic precipitator, and/or

a number relating to the zones of the electrostatic precipitator and

a position relating to the zones in the electrostatic precipitator, and/or

the assignment of the high-voltage supply units to the precipitator zones, and/or

planned and actual emission values of the electrostatic precipitator, and/or

an assignment of the planned and actual emission values to the precipitator zone of the electrostatic precipitator, and/or

process temperature and flow volume values of the electrostatic precipitator, and/or

a current optimization mode of the electrostatic precipitator, and/or

a current operating start-up or optimization of energy consumption mode.

13. The control method as claimed in claim 12, wherein characteristic methods of the electrostatic precipitator object present on the server component are determined in the electrostatic precipitator object present on the server component and comprise a total electrical power or a partial electrical powers of the serial and parallel precipitator zones.

14. The control method as claimed in claim 11, wherein characteristic properties of the high-voltage supply units objects present on the server component comprise:

a name or the identification of the respective high-voltage supply unit, and/or

a planned value for a voltage, a current and a power at the respective high-voltage supply unit, and

an actual value for the voltage, the current and the power at the respective high-voltage supply unit, and

a status report of the respective high-voltage supply units, and/or

an error report of the respective high-voltage supply units, and/or

process signals and associated scaling between 0 to 20 mA signals that are specified at the control entity, and/or

an operating parameter set at the respective high-voltage supply unit.

15. The control method as claimed in claim 14, wherein the characteristic methods of the high-voltage supply unit objects present on the server component are determined in the respective high-voltage supply unit object and comprise:

average power values over defined time periods, and/or

switching actions with remote indication, and/or

error acknowledgements, and/or

process temperature values in degrees Celsius, and/or

the setting of planned values and/or

the selection of operating modes, wherein the operating modes are selected from the group consisting of;

optimization, oscilloscope start-up, and recording the U/I characteristic curve.

16. The control method as claimed in claim 15, wherein individual objects derived from the electrostatic precipitator objects or high-voltage supply unit objects or auxiliary functional unit class are creatable by the client modules.

17. The control method as claimed in claim 16, wherein classes are definable by optimization programs of the client modules, where one or more precipitator zones of the electrostatic precipitator are represented by the classes.