DE102005011287B4 - Method and an apparatus for operating at least one burner for firing the combustion chamber of a heat engine or gas turbine - Google Patents

Abstract

Method for operating at least one premix burner (1) for firing a combustion chamber of a heat engine, in particular a gas turbine plant, whereby a number of operating parameters are sensed, which qualitatively determine a combustion process respectively within the at least one premix burner (1), wherein the number of operating parameters For evaluation of the combustion process within the combustion chamber is evaluated, characterized in that at least the following operating parameters are sensed by a on a housing of the premix burner (1) arranged sensor unit (4): - temperature at and / or in the burner housing, - mass flow of the combustion air fed to the premix burner (1) by means of a partial pressure measurement, - pressure fluctuations (P,) within the premix burner (1) by means of a microphone sensor due to the formation of thermoacoustic oscillations and a flame signal.

Description

Technical area

The invention relates to a method and a device for operating at least one burner for firing the combustion chamber of a heat engine, in particular a gas turbine plant.

Burners preferably premix burners are known from a variety of prepublished publications, such as. From the EP 0 210 462 A1 as well as the EP 0 321 809 B1 , to name just a few. Premix burners of this type is based on the general operating principle, within a mostly designed as a conical swirl generator, which provides at least two with corresponding mutual overlap Teilkegelschalen to produce a consisting of a fuel-air mixture swirl flow, which within a downstream of the premix burner combustion chamber under training a spatially stable as possible premix flame is made to ignite. From the EP 0 529 900 A1 For example, a gas turbine with multiple premix burners is known in which there is a plurality of sensors whose output signals serve to provide improved burner control or combustion. The output signals of the sensors are processed in a control unit. The deviations of the sensor signals from internally stored reference values are converted into correction factors or terms and used to control the combustion air / fuel ratio.

Whether in single or multiple burner arrangement, such premix burners are preferably used for firing combustion chambers for the operation of heat engines, especially in gas or steam turbine plants, especially since such premix burners allow the use of different fuels to form a substantially homogeneous fuel-air mixture, which ultimately under training an aerodynamically stabilized premix flame is made to ignite.

High demands are placed on the operation of heat engines, in particular of gas turbine plants, with regard to their environmental compatibility, since the exhaust gases released into the atmosphere by the combustion process are subject to strict emission limit values. In addition, it is important to optimize heat engines from the point of view of their efficiency, with which they are able to convert thermal energy into electrical energy, and preferably in the entire spectrum of their power range.

Current gas turbine plants are operated in a conventional manner according to a fixed predetermined operating pattern, which depends on a limited number of individually predetermined environmental conditions. For example, such environmental conditions are ambient temperature, humidity, and fuel qualities, to name a few. These external influences significantly affect the performance of a gas turbine plant. Thus, taking into account these and other environmental conditions prior to commissioning of the gas turbine plant, for example, a predetermined series of construction, a so-called operating manual or "operating schedule" created according to which a determination of important control variables, which ensures the most optimized operation of the gas turbine plant in the entire load range should. The control variables relate in particular to quantitative as well as qualitative variables that regulate the fuel and combustion air supply of the burner unit.

However, problems can occur if even the slightest production-related deviations can be observed within a gas turbine series, which relate in particular to the burner component. Since the premix burners used in the burner of the type mentioned have an optimized design with regard to flame stability and emission behavior, even the smallest, affecting the aerodynamic flow flow deviations in the structural design of the premix burners can have considerable adverse effects on the combustion result. If, in a manner known per se, the combustion process is carried out with fixed predetermined control variables which are not able to take account of design-related deviations, this inevitably leads to an unsatisfactory combustion result, which ultimately results in the occurrence of overheating in the burner or in the burner downstream Hot gas path, reflected in so-called thermoacoustic vibrations and deteriorated emission levels. Also, system-related aging phenomena on the individual components of the gas turbine contribute to the fact that the performance of the entire gas turbine plant deteriorates with increasing system age.

The aim should therefore be to actively monitor the entire combustion process and to adapt advantageously the controlled variables influencing the combustion process, such as fuel and air supply, to the possibly currently resulting changes.

Presentation of the invention

The invention has for its object to provide a method for operating at least one burner for firing a combustion chamber of a heat engine, in particular a gas turbine plant, such that provisions are to be made, with which it is possible to optimize the combustion process optimized within the burner to current operating conditions , The necessary procedural as well as equipment technical effort should be as low as possible and beyond in an advantageous manner to already existing burner systems subsequently adaptable. Of particular interest is the operation of multiple burner arrangements, in which it is necessary to run the combustion process stable and with the lowest possible emission levels in terms of the emission of NOx and CO. There is also the desire to protect the operation of a burner in heat engines against malfunction by occurring errors should be detected as soon as possible in order to ultimately take appropriate countermeasures to prevent possible damage caused by the malfunction of the burner assembly.

The solution of the problem underlying the invention is specified in claim 1. An inventively embodied burner assembly is the subject of claim 15. The inventive concept advantageously further features are the subject of the dependent claims and the further description, in particular with reference to the embodiment, refer.

The method according to the invention for operating at least one burner for firing a combustion chamber of a heat engine, in particular a gas turbine plant, on the one hand provides for sensor-based detection of a number of operating parameters which qualitatively determine the combustion process within the burner. This relates advantageously to the detection of the temperature at and / or in the burner housing by means of a suitable thermal sensor element, which is preferably housed in a recess within the burner housing. Furthermore, the mass flow of the combustion air supplied to the burner is detected, as is the mass flow of at least one type of fuel, which is supplied to the burner for forming an ignitable fuel mixture, in the form of a fuel air mixture. Both the time supplied to the burner amount of combustion air supply and also the supplied fuel are detected in an advantageous manner with a differential pressure measuring probe, which is introduced into the respective mass flows exactly. If the type of fuel supplied to the burner is liquid fuel, then known flow sensors introduced into the liquid mass flow are suitable. In the case of the supply of gaseous fuels, the use of the above-mentioned differential pressure measuring sensors is suitable.

Furthermore, pressure fluctuations which occur within the burner housing due to the formation of thermoacoustic oscillations are detected by means of sound-acoustic sensors, for example with the aid of a microphone. Optical sensors are also suitable for detecting the integral as well as spatially resolved heat release of the flame forming inside the burner. Finally, with the aid of suitable gas sensors which operate by chemical reaction or by means of optical absorption or transmission measurements, the gas composition of the hot gases forming through the combustion process can be detected.

The abovementioned operating parameters, which are able to provide information about the quality of the combustion process within the burner, are evaluated according to the invention for the purpose of evaluating the combustion process in order ultimately to obtain complete information about the current combustion state.

In order to be able to make a qualitative statement about the current combustion state, at least some of the sensorially detected operating parameters are preferably compared with desired values, wherein the best possible agreement or at least a substantial approximation of the acquired operating parameters with the predetermined target values should be sought in order ultimately to optimize and optimize to achieve stable combustion, the quality of which is preferably reflected in the following operating variables: flame temperature distribution, hot gas temperature at the turbine inlet, concentration of nitrogen oxides and carbon monoxide in the exhaust gases, pressure fluctuations within the burner, through which a statement about the flame stability can be made and ultimately an information on the flame stability from the occurrence of a flashback from the side of the combustion chamber back into the burner.

Depending on the size of the deviation between the sensor-recorded operating parameters, the so-called actual values and suitably predetermined target values, burner malfunctions can be detected in good time before irreversible damage to the burner itself can occur. If the deviations exceed predetermined tolerance limits, the burner can advantageously be transferred into a safety mode in which burner damage can be excluded and in which the burner is operated until a regular burner inspection is carried out. As an alternative to operating the burner in a safety mode, the corresponding burner can be switched off completely in order to be able to immediately investigate the damage that has occurred and to be able to remedy it accordingly.

The transfer of a burner into a required safety mode, in which the burner is operated with reduced or greatly reduced burner power, takes place by activating at least one actuating means, which is able to influence the fuel supply. In a simple embodiment, the adjusting means is designed as a throttle valve introduced in a fuel line, through which the fuel supply can be throttled continuously and also completely prevented.

The actuation of the actuating means takes place with the aid of a control signal, which is generated as a function of the above-described evaluation of the sensorially detected operating parameters of the burner. In a particularly advantageous manner, however, it is conceivable to carry out the evaluation of the sensor-recorded operating parameters of the burner in the context of a closed control loop, wherein the generated control signal in the form of a control signal on the actuating means causes a change in the mass flow of the fuel supplied to the burner, which in turn directly determines the operating parameters be influenced by the burner. Within the scope of such a closed control loop, it is possible to keep the burner continuously in an optimized combustion state as a function of the power demanded by the heat engine.

The above-described burner monitoring by a burner's own data acquisition, in the context of which the combustion process characterizing operating parameters of the burner are detected, thus includes in a second step, a qualitative assessment of the burner state, which on the one hand it is possible to significantly increase the reliability of the burner and on the other hand Quality of the combustion process to improve significantly.

Of particular value is the inventive burner control in multi-burner arrangements, in which a plurality of individual burners used for firing a large-sized combustion chamber, as is the case for example in the case of ring or Topfbrennkammern.

In particular, in multiple burner arrangements, the individual burners u.a. for the sake of a flame forming stable in the combustion chamber and reduced emission levels fueled. The fuel grading is done in a conventional manner either by a classification of the burner in burner groups, each burner group is supplied separately via a fuel supply with fuel - this type of grading is usually called external gradation - or the individual burner of the multiple burner arrangement are each about at least fueled two separate fuel lines. The latter type of grading is also referred to as internal grading. Also, a combination of both grading types is conceivable.

Thus, it is in principle possible to carry out a monitoring of each burner separate from each other in multiple burner arrangements, as described above, with a possible burner control in the context of a control or regulation for each burner separately and independently of the other burners in the multiple burner arrangement. Also, the monitoring and associated control may include entire burner groups that are fueled accordingly as part of a fuel staging. In principle, there are no technical limits to the possibilities for torch monitoring.

In a preferred embodiment, however, the operating parameters detected by sensors for each individual burner are fed to a higher-level monitoring unit directly or as a previously evaluated information unit. By merging the sensorially detected operating parameters of all burners provided in a multiple burner arrangement according to the invention, it is basically possible to uniformly monitor the entire combustion process of the multiple burner arrangement. Thus, in a first expansion stage, the superordinate control unit could serve exclusively as higher-level measured value detection, based on which the current combustion state of the multiple burner arrangement is merely "readable".

In an extended embodiment, the higher-level monitoring unit monitors the current combustion process in such a way that the current combustion states of the individual burners are compared with a higher-level multiple burner mode implemented in the monitoring unit and corresponding control or control signals are generated in the event of deviations that trigger the activation of the Serving means within the respective burner serve. The higher-level monitoring unit can thus be understood as a type of control center, in which a multiple burner arrangement is monitored and regulated with specification of a predetermined predetermined multiple burner operation.

For the active control of the multiple burner arrangement, certain operating variables of the multiple burner arrangement are detected and, for the purpose of optimizing the higher-level monitoring unit, additionally supplied to the burner-specific operating parameters. Details of this can be found in the embodiment described below.

Under the provision of a predetermined multi-burner operation mode and the operating parameters of the multiple burner arrangement detected for purposes of their optimization and supplied to the monitoring unit, control commands are generated which are transmitted to the adjusting means influencing the fuel supply of the individual burners. Likewise, in the case of the operational safety of the multiple burner arrangement in danger burning combustion situation, a protective signal from the parent monitoring unit are discontinued, is interrupted by the example, the fuel supply for the entire multi-burner arrangement or only for certain burner groups or individual burner abruptly.

The inventive method for operating a burner assembly, which is used advantageously for firing a gas turbine plant, thus offering the possibility of both the mere monitoring and the active control of the combustion process.

In the simplest case, the detection of the sensor-recorded operating parameters is the mere evaluation of the combustion process of a single burner. In a first stage of the expansion, the sensorially recorded operating parameters are evaluated for purposes of optimizing the combustion result in order ultimately to generate control or regulating signals which actively influence the combustion process of the individual burner by means of targeted control or regulation of the fuel inflow.

An extended monitoring stage relates to multiple burner arrangements and the merging of all sensory operating parameters of a plurality of individual burners, by which an improved monitoring of the combustion process with respect to the entire multi-burner arrangement is possible.

A hitherto final training stage for the controlled monitoring of a multiple burner arrangement provides for the targeted generation of control or regulating signals which, for purposes of optimizing the overall combustion result, influence the fuel supply to a large number of individual burners by targeted activation of suitable setting means.

Advantageously, the method according to the invention can be adapted individually to the control requirements but in particular to the complexity of the respective burner arrangement. In principle, the more comprehensive and complex the burner arrangement is, the more comprehensive and complex it is to monitor and possibly control a burner arrangement. In addition, more extensive monitoring and control of burner systems are advantageous the closer the burner operation is to highly reduced emissions, particularly with regard to greatly reduced NOx emissions. Even in cases where the burner is operated with different fuel types or qualities, the method according to the invention helps to give an all-encompassing statement about the current operating behavior and ultimately to ensure safe and combustion-optimized operation.

For technical implementation of the method according to the invention, a burner arrangement with at least one burner for firing a heat engine, in particular a gas turbine plant, in whose burner for forming an ignitable fuel / air mixture at least one type of fuel is supplied by at least one fuel line, wherein sensors are provided on the burner , can be detected by each of the combustion process characterizing operating parameters. In order to evaluate the measurement signals detected by the sensors, which ultimately represent the operating parameters, an evaluation unit which is assigned to the burner and which brings at least the sensory operating parameters for purposes of evaluation of the combustion process is used. In extension, a burner control unit is preferably provided, which is preferably combinable with the evaluation unit and in which based on the evaluated in the evaluation unit operating parameters at least one control or regulating signal is generated, which activates at least one actuating means, the mass flow of the at least one type of fuel affects at least one, preferably all of the burner provided fuel lines. By the adjusting means, which is formed in a simplest embodiment as a valve within a fuel line, the combustion process can be influenced directly.

In the case of a multitude of individual burners which are present in the context of a multiple burner arrangement, each burner provides its burner-own evaluation and control unit, which are respectively connected via corresponding signal lines to a higher-level monitoring unit. As already mentioned above, the higher-level monitoring unit allows both an overall detection of the sensor-recorded operating parameters of all burners and, depending on the training level, a corresponding active control of the individual burners involved in the combustion process, as can be seen in detail in the embodiment shown in the further.

list of figures

• 1 schematisierte Darstellung eines Längsschnittes durch eine Einzel-Brenneranordnung mit schematisiert dargestellter Überwachungs- und Kontrolleinheiten

The invention will be described below by way of example with reference to an exemplary embodiment with reference to the drawing. It shows:

• 1 Schematic representation of a longitudinal section through a single burner assembly with schematized monitoring and control units

Ways to carry out the invention, industrial usability

• - Der Massenfluss der Verbrennungszuluft, die dem Vormischbrenner 1 zugeführt wird, wird im Wege einer Partialdruckmessung δp_air erfasst.
• - Im Wege einer Temperaturmessung wird die Gehäusetemperatur T_Burner,Shell des Brenners erfasst.
• - Im Wege einer Druckmessung, vorzugsweise mittels eines Mikrofonsensors, können Druckschwankungen (P_rms,mikro) erfasst werden, die als Maß für sich im Brenner ausbildende thermoakustische Schwingungen dienen.
• - Mit Hilfe eines optischen Sensors ist es möglich, ein Flammensignal (Signal_Flame-Sensor) zu erfassen, um eine Aussage darüber treffen zu können, ob eine Flamme innerhalb des Brenners vorhanden ist oder bereits erloschen ist.
• - Ferner wird der Brennstoffzufluß längs der Brennstoffleitungen 2, 3 ebenfalls im Wege einer Partialdruckmessung erfasst (P_{1st STAGE GAS}, P_{2nd STAGE GAS})

The single figure shows a schematic longitudinal section through a single premix burner assembly, with a conical premix burner 1 with supply lines 2 . 3 that serve a dual-tiered fuel feeder. On the other detail components of the burner assembly shown in the single figure should not be gone further at this point. Only it should be noted that on the housing of the premix burner 1 a burner-own sensor unit 4 is provided, via which a plurality of individual operating parameters can be detected by sensors. The sensor unit 4 enables in detail the acquisition of the following operating parameters:

• - The mass flow of the combustion air supplied to the premix burner 1 is supplied, is detected by means of a partial pressure measurement δp _air .
• - By measuring the temperature, the housing temperature T _{Burner, Shell of} the burner is detected.
• - By pressure measurement, preferably by means of a microphone _sensor, pressure fluctuations (P _{rms, micro} ) can be detected, which serve as a measure of forming in the burner thermoacoustic oscillations.
• - With the help of an optical sensor, it is possible to detect a flame signal (signal _{flame sensor} ) to make a statement as to whether a flame is present within the burner or has already gone out.
• - Furthermore, the fuel flow along the fuel lines 2 . 3 also detected by means of a partial pressure measurement (P _{1st STAGE GAS} , P _{2nd STAGE GAS} )

The above sensorially detected operating parameters of the premix burner 1 be supplied individually or collectively a burner-own evaluation unit 5. The evaluation unit 5 is primarily used for merging and evaluating all operating parameters detected by the burner. In extension of the evaluation unit 5 the sensory operating parameters are evaluated. In the simplest case, the sensorially recorded operating parameters are in the evaluation unit supplemented by a control function 5 compared with fixed reference values, which can be removed for example from manuals or operating tables. In the case of intolerable deviations, control or regulating signals S1, S2 are generated, by means of which adjusting means (not shown) can be activated, which are within the fuel supply lines 2 . 3 are provided and determine the mass flow of the fuel and thus directly influence the combustion behavior.

If it is a multiple burner arrangement, as in 1 by the multiple representation of successively arranged evaluation units 5 is indicated, the operating parameters of each burner are detected separately in the manner described above and in each case the burner's own evaluation 5 fed. The burner-specific operating parameters are sent directly or in edited form to a higher-level monitoring unit 6 forwarded, which serves in a simplest embodiment only as a measured value detection unit and offers the possibility of a summarized representation of the combustion states of all burners contained in the multiple burner arrangement.

In extension of the function of the monitoring unit 6 In the sense of a control unit, further input signals, which represent the combustion result of the multiple burner arrangement, become the monitoring unit 6 made available. This relates in detail to the temperature Tk2 and the pressure pk2 of the combustion air supplied to the burners, the burner load load, the nitrogen oxide concentration and carbon monoxide concentration in the exhaust gases and the temperature distribution TAT at the turbine outlet.

On the basis of these additional input variables, the higher-level monitoring unit is used 6 an evaluation of all sensory recorded operating parameters of all individual burners, which ultimately control commands B1, B2, etc. are generated and sold, which have a direct impact on the performance and thus on the fuel supply of the respective burner.

The burner monitoring according to the invention can be adapted to existing modular burner systems, in particular multiple burner arrangements due to their modularity.

By the combined monitoring of a plurality of individual burners in a multiple burner arrangement, the method according to the invention offers the possibility of combining individual burners into burner groups which are jointly controlled or controlled for purposes of optimizing the overall combustion result.

Depending on the burner arrangement, intended use and operating behavior, the method according to the invention offers individual optimization strategies which improve the combustion result and ultimately considerably increase the operational safety of individual and multiple burner arrangements.

LIST OF REFERENCE NUMBERS

1

premix

2, 3

fuel supply line

4

sensor unit

5

Evaluation and control unit

6

higher-level monitoring unit

Claims (19)

Method for operating at least one premix burner (1) for firing a combustion chamber of a heat engine, in particular a gas turbine plant, whereby a number of operating parameters are sensed, which qualitatively determine a combustion process respectively within the at least one premix burner (1), wherein the number of operating parameters For evaluation of the combustion process within the combustion chamber is evaluated, characterized in that at least the following operating parameters are sensed by a on a housing of the premix burner (1) arranged sensor unit (4): - temperature at and / or in the burner housing, - mass flow of the combustion air fed to the premix burner (1) by means of a partial pressure measurement, - pressure fluctuations (P _mms , _micro ) within the premix burner (1) by means of a microphone sensor due to the formation of thermoacoustic vibrations and - a flame design al. Method according to Claim 1 , characterized in that at least one of the following operating parameters is sensory detected: mass flow of at least one type of fuel supplied to the premix burner (1) to form an ignitable fuel mixture, heat release of the flame forming in the premix burner (1), flame temperature flame forming in the premix burner (1), - gas composition of the hot gases forming through the combustion process. Method according to Claim 2 , characterized in that the mass flow of both the combustion air supply and the at least one type of fuel is determined in each case by means of a differential pressure measurement. Method according to one of Claims 1 to 3 , characterized in that the at least one premix burner (1) is operated by means of a so-called inner stepped fuel supply, wherein the at least one premix burner (1) via at least two separate Brennstoffzuführleitungen (2, 3) the at least one type of fuel is supplied. Method according to one of Claims 1 to 4 characterized in that a plurality of premix burners (1) are provided for firing a combustor so supplied by at least one type of fuel by way of an outer staging that a first group of premix burners (1) via at least a first (2) fuel supply duct and supplying at least a second group of premix burners (1) with at least one second fuel line (3) having the at least one type of fuel. Method according to Claim 4 or 5 , characterized in that the mass flow of the at least one type of fuel is determined separately by each individual fuel supply line. Method according to Claim 5 , characterized in that a ratio of the mass flows of at least one fuel type supplied by the at least two fuel supply lines (2, 3) to the at least one premix burner (1) is determined. Method according to one of Claims 1 to 7 , characterized in that the heat release caused by the flame forming in the premix burner (1) is detected calorically, and that the heat release is indicated as an integral value over the entire flame or spatially resolved temperature field representing at least a portion of the flame. Method according to one of Claims 1 to 8th , characterized in that on the basis of the evaluation of the sensor-recorded operating parameters at least one control or regulating signal (S1, S2) is generated, with which at least one actuating means is activated, by the Combustion process of at least one premix burner (1) is affected. Method according to Claim 9 , characterized in that the at least one or all of the premix burner (1) provided for fuel lines (2, 3) flowing mass flow through the control or regulating signal (S1, S2) is controlled or regulated. Method according to Claim 9 or 8th , characterized in that the influence of the combustion process is optimized by targeted activation of the at least one actuating means at least one of the following combustion properties: - hot gas temperature at the turbine inlet (TIT), - homogenization of the temperature distribution within the combustion chamber, - reducing the emission levels of NOx and CO in the Exhaust gases of the internal combustion engine, - Increase of the flame stability and reduction of thermoacoustic vibrations in the premix burner (1) and - Reduction of the risk of flashback and overheating. Method according to one of Claims 1 to 11 , characterized in that for a plurality of individual premix burners (1), which are arranged in the context of a multiple burner arrangement, the operating parameters of each individual premix burner (1) are detected and evaluated separately. Method according to Claim 12 , characterized in that the operating parameters detected per premix burner (1) or the information determined per premix burner (1) based on the operating parameters of a higher-level monitoring unit (6) for monitoring and control of the multiple burner arrangement. Method according to Claim 13 , characterized in that based on a multiple burner operation, the monitoring unit (6) control or control signals (B1, B2) for controlling or regulating individual premix burners (1) or burner groups generated. Burner arrangement with at least one premix burner (1) for firing a heat engine or a gas turbine plant, to which at least one fuel line (2, 3) can be fed in order to form an ignitable fuel / air mixture, wherein a number of sensors are connected to the premix burner (1). is provided, each detecting the combustion process characterizing operating parameters, characterized in that a plurality of sensors in a sensor unit (4) are combined, that the sensor unit (4) on a housing of the premix burner (1) is provided that a premix burner (1) assignable evaluation unit (5) is provided, which evaluates the number of sensor-recorded operating parameters for purposes of evaluation of the combustion process, and that the sensor unit (4) comprises at least the following sensors: - temperature sensor for detecting the temperature at the burner housing, - mass flow sensor for detecting the combustion air supplied to the premix burner (1) based on a partial pressure measurement, - microphone sensor for detecting pressure fluctuations within the burner due to the formation of thermoacoustic oscillations and an - optical sensor for detecting a flame signal. Burner arrangement according to Claim 15 , characterized in that the sensor unit (4) comprises at least one of the following sensors: - mass flow sensor for detecting the at least one fuel type, - thermal sensor for detecting the heat release of the flame forming in the burner, - thermosensor for detecting the flame temperature of the burner forming in the burner Flame, gas sensor for detecting the gas composition of the hot gases that form as a result of the combustion process. Burner arrangement according to Claim 15 or 16 , characterized in that a burner control unit is provided, in which on the basis of evaluated in the evaluation unit (5) operating parameters at least one control or regulating signal (S1, S2) can be generated, which activates at least one actuating means, the mass flow of at least one Fuel type by at least one or all of the premix burner (1) provided fuel lines (2, 3) influenced. Burner arrangement according to Claim 17 , characterized in that the adjusting means is designed as a valve provided on the fuel line (2, 3). Burner arrangement according to one of Claims 15 to 18 , characterized in that a plurality of individual premix burners (1) is arranged in the context of a multiple burner arrangement, that the operating parameters detected per premix burner (1) or information determined on the basis of the operating parameters per premix burner (1) can be fed to a higher-level monitoring unit (6), and that the higher-level monitoring unit (6) is based on a setpoint Combustion behavior with respect to the multi-burner arrangement generates control or control variables, which in each case influence the actual combustion state of the individual premix burners (1).

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