IGV adjusting method for aero-retrofit gas turbine

Abstract

An IGV adjusting method for an aero-retrofit gas turbine belongs to the technical field of IGV adjusting, and comprises the following steps: when the aero-retrofit gas turbine works, analyzing the IGV opening degree of the aero-retrofit gas turbine to obtain an alarm quantity, and when the IGV opening degree of the aero-retrofit gas turbine exceeds the defined IGV opening degree for several times, analyzing the continued use time of the exceeding condition in real time, so as to obtain the alarm quantity; according to the method, the working performance of the aero-retrofit gas turbine is favorably improved, failure generation is avoided in advance, the time for stopping the working of the aero-retrofit gas turbine caused by the failure of the aero-retrofit gas turbine is shortened, and the working efficiency of the aero-retrofit gas turbine is favorably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of IGV regulation, and in particular relates to an IGV regulation method for an aeroderivative gas turbine. Background Art

[0002] An aeroderivative gas turbine is a gas turbine that has been modified from an aviation jet engine and equipped with a power turbine so that its speed and power meet the needs of land power generation or mechanical traction.

[0003] As for the IGV regulation of aeroderivative gas turbines, currently, the IGV regulation of aeroderivative gas turbines is often performed as described in the patent publication number "CN107035537B". Specifically, the IGV opening and exhaust temperature of the gas turbine are adjusted through the gas turbine control loop of the aeroderivative gas turbine to achieve the regulation of the gas turbine warm-up load of the aeroderivative gas turbine.

[0004] On the other hand, in order to adjust the warm-up load of the gas turbine of the aero-derivative gas turbine, the opening meter, thermocouple and LCD screen are all connected to the controller. The opening meter is used to sample the IGV opening of the gas turbine and transmit it to the controller. The thermocouple is used to sample the exhaust temperature value of the gas turbine and transmit it to the controller. The controller is used to send the collected IGV opening and exhaust temperature values ​​of the gas turbine to the LCD screen for display, so as to monitor the IGV opening and exhaust temperature value of the gas turbine during the warm-up load adjustment of the gas turbine. In addition, an alarm maximum value can be defined according to the IGV opening and exhaust temperature value of the gas turbine. The high value is used to achieve the working alarm of the aeroderivative gas turbine, and the alarm can only be executed on the aeroderivative gas turbine when the working parameter of the aeroderivative gas turbine (IGV opening of the gas turbine) is the highest alarm value. When the aeroderivative gas turbine generates an alarm, the aeroderivative gas turbine is often already failed, so that the operation of the aeroderivative gas turbine needs to be stopped for maintenance and the working performance and efficiency of the gas turbine are weakened. In addition, there is a lack of analysis of the working parameters of the aeroderivative gas turbine, so the alarm type of the aeroderivative gas turbine is not identified, which is not conducive to the operation improvement of the aeroderivative gas turbine. Summary of the invention

[0005] In order to solve the defects in the prior art, the present invention provides an IGV adjustment method for an aeroderivative gas turbine. When the aeroderivative gas turbine is working, the IGV opening of the aeroderivative gas turbine is analyzed to obtain an alarm value. When the IGV opening of the aeroderivative gas turbine exceeds the defined IGV opening for several times, the continuous time, the interval time and the abnormal amplitude of the excess are analyzed in real time, so as to warn the aeroderivative gas turbine, which is suitable for improving the working performance of the aeroderivative gas turbine, avoiding failure in advance and reducing the failure form of the aeroderivative gas turbine. The resulting suspension of the operation of the aeroderivative gas turbine is conducive to improving the operating efficiency of the aeroderivative gas turbine; by analyzing the change coordination between the exhaust temperature of the aeroderivative gas turbine and the IGV opening, it is analyzed whether the aeroderivative gas turbine alarm is caused by the abnormal exhaust temperature of the aeroderivative gas turbine, so as to identify the alarm type and achieve accurate confirmation of the aeroderivative gas turbine operation alarm, which is conducive to the operation improvement of the aeroderivative gas turbine, and if the alarm is caused by the abnormal exhaust temperature of a non-aeroderivative gas turbine, it is conducive to efficient detection of other alarm factors.

[0006] The present invention utilizes the following technical solutions.

[0007] An aeroderivative gas turbine IGV adjustment method, comprising:

[0008] The IGV opening and exhaust temperature of the gas turbine are adjusted through the gas turbine control loop of the aeroderivative gas turbine to achieve the adjustment of the gas turbine warm-up load of the aeroderivative gas turbine, and the opening meter samples the IGV opening of the gas turbine and transmits it to the controller, and the thermocouple samples the exhaust temperature of the gas turbine and transmits it to the controller. The controller sends the collected IGV opening and exhaust temperature of the gas turbine to the LCD screen for display, thereby achieving the monitoring of the IGV opening and exhaust temperature of the gas turbine during the gas turbine warm-up load adjustment period;

[0009] After receiving the IGV opening and exhaust gas temperature of the gas turbine, the controller also includes:

[0010] S1, real-time detection and acquisition of the working parameters of the aeroderivative gas turbine during the working period;

[0011] S2, based on the parsed information, then perform real-time detection on the aero-derivative gas turbine and obtain the presentation value of the parsed information in real time.

[0012] Further, in S1, the working parameter includes the IGV opening of the aeroderivative gas turbine, and the working parameter is compared with the working definition quantity to obtain a processing message, where the processing message includes an alarm message, an analysis message and a working message, and the working definition quantity includes a pre-defined IGV opening limit value;

[0013] Further, in S1, the IGV opening of the aeroderivative gas turbine is obtained, and the opening is compared with the IGV opening limit value and the IGV opening reference range respectively;

[0014] If the IGV opening exceeds the IGV opening limit value and is not within the IGV opening reference range, an alarm message is generated;

[0015] If the IGV opening exceeds the IGV opening limit value and is within the IGV opening reference range, a parsing message is generated;

[0016] If the IGV opening does not exceed the IGV opening limit value, a working message is generated.

[0017] Furthermore, in S1, the method for obtaining the IGV opening reference interval is: obtain the IGV opening defined in advance before the operation of the aeroderivative gas turbine, that is, the IGV opening limit value, and perform total processing on the root mean square difference between it and the actual value of the IGV opening to obtain the IGV opening reference interval. Just as, the IGV opening defined in advance before the operation of the aeroderivative gas turbine is named KM, and the root mean square difference of its IGV opening ±XD is obtained, then the IGV opening reference interval is [KM-XD, KM+XD].

[0018] Furthermore, in S2, the presented value includes the duration, time interval and excess amplitude. The presented value is processed and analyzed to obtain the alarm value. The alarm value is compared with the alarm threshold. If the alarm value is not lower than the alarm threshold, an IGV opening alarm message is generated.

[0019] Furthermore, in S2, the frequency of display of the real-time detection analysis message and the time taken for the aeroderivative gas turbine to change the IGV opening once are multiplied together to obtain the excess time, and the excess time is divided by the working time of the aeroderivative gas turbine to obtain an amount as the period duration, and it is named DY.

[0020] Further, in S2, the frequency of the working message appearing between the analysis messages is detected and counted in real time, and the frequency is multiplied by the time it takes for the aero-derivative gas turbine to change the IGV opening once, so as to obtain the total time between the analysis messages;

[0021] The total frequency of parsing messages separated by working messages, that is, the interval frequency between parsing messages, is taken as the mean time between parsing messages, and the mean time between parsing messages is divided by the working time of the aeroderivative gas turbine, and is taken as the time interval quantity, which is named KH.

[0022] Furthermore, in S2, the IGV opening of the aero-derivative gas turbine is obtained in real time when each analytical message is displayed, and the opening is subtracted from the IGV opening limit value, and the modulus of the subtracted amount is used as the corresponding IGV opening reduction when the analytical message is displayed, and the corresponding IGV opening reductions when all analytical messages are displayed are added up and the average of the accumulated amounts is taken, and the average is taken as the mean IGV opening reduction, and the amount obtained by dividing the mean IGV opening reduction by the IGV opening limit value is taken as the excess amplitude, and is named QM.

[0023] Furthermore, in S2, the obtained period duration DY, time interval KH and excess amplitude QM are numerically processed through the equation: Get the alarm value ZK, where t1, t2 and t3 are all pre-defined ratio factors.

[0024] Furthermore, in S2, the alarm value ZK is compared with the alarm threshold value, and the comparison method includes:

[0025] The predefined alarm threshold is Zz;

[0026] If the alarm value ZK is not lower than the alarm threshold value Zz, an IGV opening alarm message is generated;

[0027] If the alarm value YJ is lower than the alarm threshold, it means that the IGV opening of the aeroderivative gas turbine has not exceeded the IGV opening limit value several times and continuously during the working period, and the IGV opening is not close to the boundary of the IGV opening reference interval. There is no need to execute an alarm, and the aeroderivative gas turbine continues to work and continues to perform real-time detection.

[0028] Furthermore, after S2, it also includes:

[0029] S3, based on the IGV opening alarm message, during the operating period of the aeroderivative gas turbine, the exhaust temperature value of the aeroderivative gas turbine at each time the IGV opening of the aeroderivative gas turbine is changed, and by performing processing and analysis on the exhaust temperature value, an effect quantity is obtained, and it is determined whether the alarm type of the aeroderivative gas turbine is that the exhaust temperature value of the aeroderivative gas turbine is abnormal based on the effect quantity.

[0030] Further, in S3, the working period of the aeroderivative gas turbine is the period from the start time of the operation of the aeroderivative gas turbine to the time point when the IGV opening alarm message is generated;

[0031] The exhaust gas temperature value is transmitted by using a thermocouple to sample the aeroderivative gas turbine each time the IGV opening of the aeroderivative gas turbine is changed;

[0032] During the operation period of the aeroderivative gas turbine, the exhaust gas temperature value of the aeroderivative gas turbine with the IGV opening changed each time when the analysis message was displayed was obtained, and the temperature value previously defined by colleagues was compared;

[0033] If the exhaust gas temperature value of the aeroderivative gas turbine with each change in IGV opening is different from the defined temperature value, each change in IGV opening is registered as an abnormal exhaust gas temperature value condition;

[0034] If the exhaust temperature value of the aeroderivative gas turbine with each change of IGV opening is the same as the defined temperature value, the exhaust temperature value registered with each change of IGV opening is considered reasonable;

[0035] The frequency of abnormal exhaust gas temperature value is counted, and the quantity obtained by dividing it by the frequency of analytical message display is regarded as the condition superposition quantity 1, and it is recorded as EZd;

[0036] In the case of abnormal exhaust temperature value, the exhaust temperature value and IGV opening of the aeroderivative gas turbine whose IGV opening is changed each time are obtained, and the exhaust temperature value and IGV opening limit value are respectively compared with the defined temperature value and IGV opening limit value, and the abnormal exhaust temperature value is registered according to the comparison condition, which includes:

[0037] If the exhaust gas temperature is higher than the defined temperature value and the IGV opening is lower than the IGV opening limit value, the abnormal exhaust gas temperature condition is registered as an overall abnormal condition;

[0038] If the exhaust temperature is lower than the defined temperature value and the IGV opening is higher than the IGV opening limit value, the abnormal exhaust temperature condition is registered as an overall abnormal condition;

[0039] If the exhaust temperature is lower than the defined temperature and the IGV opening is lower than the ejection setting distance, the exhaust temperature abnormality is registered as a non-overall abnormality.

[0040] If the exhaust temperature is higher than the defined temperature value and the IGV opening is higher than the ejection setting distance, the exhaust temperature abnormality will be registered as a non-overall abnormality;

[0041] The frequency of the total abnormal condition in the exhaust gas temperature abnormal condition is calculated, and the quantity obtained by dividing it by the frequency of the exhaust gas temperature abnormal condition is regarded as the condition superposition quantity 2, and it is registered as ESd;

[0042] Obtain the deviation of the exhaust gas temperature value and the deviation of the IGV opening corresponding to the overall abnormal condition, and mark them in the Cartesian system respectively, and connect the adjacent pairs of value points with line segments after marking to obtain the condition change line;

[0043] Here, the deviation of the exhaust temperature value is the modulus of the quantity obtained by subtracting the defined temperature value from the exhaust temperature value, and the deviation of the IGV opening is the modulus of the quantity obtained by subtracting the IGV opening limit value from the IGV opening;

[0044] Treat each line segment in the status change line as a sub-line;

[0045] The total number of sub-lines with derivatives higher than zero is counted, and the amount obtained by dividing it by the total number of sub-lines is taken as the azimuth coordination amount, and it is registered as UC;

[0046] Measure the vertical spans of all sub-lines and combine them into span value clusters. Obtain the standard deviation of the span value clusters and use it as the span deviation presentation amount and register it as GD.

[0047] The obtained azimuth coordination value UC and span deviation value GD are numerically processed through the equation: Obtain the state superposition value ETd, where χ and θ are both predefined ratio factors;

[0048] The obtained state superposition value 1 EZd, state superposition value 2 ESd and state superposition value 3 ETd are numerically processed and the equation Get the action ZY, where β1, β2 and β3 are all predefined ratio factors;

[0049] The action amount and the action critical amount are compared, and the comparison method includes:

[0050] If the action quantity ZY is not lower than the action critical quantity, it indicates that during the operation of the aeroderivative gas turbine, the alarm type of the aeroderivative gas turbine is an abnormal exhaust gas temperature alarm of the aeroderivative gas turbine;

[0051] If the action quantity ZY is lower than the action critical quantity, it indicates that during the operation of the aeroderivative gas turbine, it is not the exhaust gas temperature of the aeroderivative gas turbine that causes the IGV opening to be abnormal, and specific checks are performed on other alarm elements.

[0052] An aeroderivative gas turbine IGV regulating device, comprising:

[0053] The opening meter, thermocouple and LCD screen are all connected to the controller. The opening meter is used to sample the IGV opening of the gas turbine and transmit it to the controller. The thermocouple is used to sample the exhaust temperature value of the gas turbine and transmit it to the controller. The controller is used to send the collected IGV opening and exhaust temperature values ​​of the gas turbine to the LCD screen for display, so as to monitor the IGV opening and exhaust temperature value of the gas turbine during the warm-up load adjustment period of the gas turbine.

[0054] The modules on the controller include:

[0055] A detection module, which is used to detect and obtain the working parameters of the aeroderivative gas turbine in real time during the working period;

[0056] A parsing module, which is used to perform real-time detection on the aeroderivative gas turbine according to the parsing message, and to obtain the presentation value of the parsing message in real time;

[0057] The confirmation module is used for obtaining the exhaust temperature value of the aeroderivative gas turbine at each time the IGV opening of the aeroderivative gas turbine is changed during the working period of the aeroderivative gas turbine according to the IGV opening alarm message, obtaining the action amount by performing processing analysis on the exhaust temperature value, and determining whether the alarm type of the aeroderivative gas turbine is that the exhaust temperature value of the aeroderivative gas turbine is abnormal according to the action amount.

[0058] The beneficial effect of the present invention is that, compared with the prior art, the present invention can detect and obtain the working parameters of the aeroderivative gas turbine in the working period in real time, wherein the working parameters include the IGV opening of the aeroderivative gas turbine, compare the working parameters with the working definition quantity, and obtain the processing message, wherein the processing message includes the alarm message, the analysis message and the working message, and then perform real-time detection on the aeroderivative gas turbine according to the analysis message, and obtain the presentation value of the analysis message in real time, wherein the presentation value includes the period duration, the time interval and the The amplitude exceeds the value, and the alarm value is obtained by performing processing analysis on the presented value, and the alarm value is compared with the alarm threshold. If the alarm value is not lower than the alarm threshold, an IGV opening alarm message is generated. The present invention performs analysis on the IGV opening of the aeroderivative gas turbine when the aeroderivative gas turbine is working, and obtains the alarm value. When the IGV opening of the aeroderivative gas turbine exceeds the defined IGV opening several times, the continuous time, interval time and abnormal amplitude of the exceeding state are immediately analyzed, so as to detect the aeroderivative gas turbine. The turbine alarm is conducive to improving the working performance of the aeroderivative gas turbine, avoiding failure in advance and reducing the working time of the aeroderivative gas turbine caused by failure of the aeroderivative gas turbine, which is conducive to improving the working efficiency of the aeroderivative gas turbine; according to the IGV opening alarm message, during the working period of the aeroderivative gas turbine, the exhaust temperature value of the aeroderivative gas turbine at each time the IGV opening of the aeroderivative gas turbine is changed, and the action amount is obtained by performing treatment analysis on the exhaust temperature value, and the alarm of the aeroderivative gas turbine is determined according to the action amount. Whether the alarm type is an abnormal exhaust temperature value of the aeroderivative gas turbine, the present invention analyzes whether the aeroderivative gas turbine alarm is caused by the abnormal exhaust temperature value of the aeroderivative gas turbine by analyzing the change coordination between the exhaust temperature value of the aeroderivative gas turbine and the IGV opening, thereby identifying the alarm type and achieving accurate confirmation of the aeroderivative gas turbine operation alarm, which is conducive to the operation improvement of the aeroderivative gas turbine, and if the alarm is caused by the abnormal exhaust temperature value of a non-aeroderivative gas turbine, it is convenient to perform efficient detection of other alarm factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is a partial flow chart of the aeroderivative gas turbine IGV adjustment method described in the present invention;

[0060] Figure 2 It is a schematic diagram of the module structure of the aeroderivative gas turbine IGV regulating device described in the present invention. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely expressed in combination with the drawings in the embodiments of the present invention. The embodiments expressed in this application are only embodiments of a part of the present invention, not all embodiments. According to the spirit of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0062] like Figure 1 As shown, the present invention provides an aeroderivative gas turbine IGV adjustment method, comprising:

[0063] The IGV opening and exhaust temperature of the gas turbine are adjusted through the gas turbine control loop of the aeroderivative gas turbine to achieve the adjustment of the gas turbine warm-up load of the aeroderivative gas turbine, and the opening meter samples the IGV opening of the gas turbine and transmits it to the controller, and the thermocouple samples the exhaust temperature of the gas turbine and transmits it to the controller. The controller sends the collected IGV opening and exhaust temperature of the gas turbine to the LCD screen for display, thereby achieving the monitoring of the IGV opening and exhaust temperature of the gas turbine during the gas turbine warm-up load adjustment period;

[0064] After receiving the IGV opening and exhaust gas temperature of the gas turbine, the controller also includes:

[0065] S1, real-time detection and acquisition of the working parameters of the aeroderivative gas turbine during the working period;

[0066] In a preferred but non-limiting embodiment of the present invention, in S1, the working parameter includes the IGV opening of the aeroderivative gas turbine, and the working parameter is compared with the working definition quantity to obtain a processing message, where the processing message includes an alarm message, an analysis message and a working message, and the working definition quantity includes a pre-defined IGV opening limit value;

[0067] The operating period of the aeroderivative gas turbine is the time that the aeroderivative gas turbine is required to work based on the working requirements of the aeroderivative gas turbine.

[0068] In a preferred but non-limiting embodiment of the present invention, in S1, the IGV opening of the aeroderivative gas turbine is obtained, and the opening is compared with the IGV opening limit value and the IGV opening reference interval respectively;

[0069] If the IGV opening exceeds the IGV opening limit value and is not within the IGV opening reference range, an alarm message is generated;

[0070] If the IGV opening exceeds the IGV opening limit value and is within the IGV opening reference range, a parsing message is generated;

[0071] If the IGV opening does not exceed the IGV opening limit, a working message is generated. Warning messages, analysis messages and working messages are all defined in advance.

[0072] If the analysis message is: the IGV opening has exceeded the IGV opening limit value, real-time detection analysis should be performed to prevent the IGV opening from exceeding the IGV opening reference range, thereby causing abnormal operation of the gas turbine.

[0073] In a preferred but non-restrictive embodiment of the present invention, in S1, the method for obtaining the IGV opening reference interval is: obtain the IGV opening defined in advance before the operation of the aeroderivative gas turbine, that is, the IGV opening limit value, and perform total processing on the root mean square difference between it and the actual value of the IGV opening to obtain the IGV opening reference interval, just as, the IGV opening defined in advance before the operation of the aeroderivative gas turbine is named KM, and the root mean square difference of its IGV opening ±XD is obtained, then the IGV opening reference interval is [KM-XD, KM+XD].

[0074] S2, based on the parsed information, then performing real-time detection on the aeroderivative gas turbine and obtaining the present value of the parsed information in real time;

[0075] In a preferred but non-restrictive implementation of the present invention, in S2, the presentation value includes the period duration, the time interval and the excess amplitude. The presentation value is processed and analyzed to obtain the alarm value. The alarm value is compared with the alarm threshold. If the alarm value is not lower than the alarm threshold, an IGV opening alarm message is generated.

[0076] In a preferred but non-limiting embodiment of the present invention, in S2, the frequency of the instant detection analysis message and the time taken for the aeroderivative gas turbine to change the IGV opening once are multiplied to obtain the excess time, and the excess time is divided by the time taken for the working period of the aeroderivative gas turbine to obtain the period duration, which is named DY. The time taken for the aeroderivative gas turbine to change the IGV opening once is the time taken for the aeroderivative gas turbine to change the opening of two adjacent IGVs.

[0077] The time taken for the aeroderivative gas turbine to change the IGV opening once is defined in advance when the aeroderivative gas turbine is operating.

[0078] The period duration is: the total time that the IGV opening exceeds the IGV opening limit value during the operation of the aeroderivative gas turbine. If the period duration is higher, it means that during the operation, the IGV opening of the aeroderivative gas turbine exceeds the IGV opening limit value for a long time, indicating an abnormal condition in which the IGV opening is unstable, and a pre-warning must be executed.

[0079] In a preferred but non-limiting embodiment of the present invention, in S2, the frequency of the working message appearing between the analysis messages is detected and totaled in real time, and the frequency is multiplied by the time it takes for the aero-derivative gas turbine to change the IGV opening once, so as to obtain the total time between the analysis messages;

[0080] The total frequency of parsing messages separated by working messages, that is, the interval frequency between parsing messages, is taken as the mean time between parsing messages, and the mean time between parsing messages is divided by the working time of the aeroderivative gas turbine, and is taken as the time interval, which is named KH.

[0081] The time interval KH is: the time interval between the conditions in which the IGV opening exceeds the IGV opening limit value during the operation of the aeroderivative gas turbine. If the time interval is lower, the time interval between the conditions in which the IGV opening exceeds the IGV opening limit value is smaller, and the continuity is better, then a pre-warning should be executed.

[0082] In a preferred but non-restrictive embodiment of the present invention, in S2, the IGV opening of the aero-derivative gas turbine is obtained in real time when each analytical message is displayed, and the opening is subtracted from the IGV opening limit value, and the modulus of the amount obtained by the subtraction is used as the corresponding IGV opening reduction when the analytical message is displayed, the corresponding IGV opening reductions when all analytical messages are displayed are added up, and the average of the accumulated amounts is taken, and the average is taken as the average of the IGV opening reductions, and the amount obtained by dividing the average of the IGV opening reductions by the IGV opening limit value is taken as the excess amplitude, and is named QM.

[0083] The excess amplitude is: when the IGV opening exceeds the IGV opening limit value for several times, the excess amplitude under the average of the several times that the IGV opening exceeds the IGV opening limit value is not low. The higher the excess amplitude, it means that the IGV opening is very close to the IGV opening reference range for several times, and a pre-warning must be executed.

[0084] In a preferred but non-limiting embodiment of the present invention, in S2, the obtained period duration DY, time interval KH and excess amplitude QM are numerically processed through the equation:

[0085] Get the alarm value ZK, where t1, t2 and t3 are all pre-defined ratio factors.

[0086] In a preferred but non-limiting embodiment of the present invention, in S2, the alarm value ZK is compared with the alarm threshold value, and the comparison method includes:

[0087] The predefined alarm threshold is Zz;

[0088] If the alarm value ZK is not lower than the alarm threshold Zz, it indicates that the IGV opening of the aeroderivative gas turbine exceeds the IGV opening limit value several times and very consistently during the working period, and the IGV opening is close to the boundary of the IGV opening reference interval. An alarm should be executed to prevent the IGV opening of the aeroderivative gas turbine from exceeding the IGV opening reference interval, thereby causing the gas turbine to work abnormally and forming an IGV opening alarm message;

[0089] If the alarm value YJ is lower than the alarm threshold, it means that the IGV opening of the aeroderivative gas turbine has not exceeded the IGV opening limit value several times and continuously during the working period, and the IGV opening is not close to the boundary of the IGV opening reference range. There is no need to issue an alarm, and the aeroderivative gas turbine continues to operate as usual, and then performs real-time detection.

[0090] The real-time detection obtains the working parameters of the aeroderivative gas turbine during the working period. Here, the working parameters include the IGV opening of the aeroderivative gas turbine. The working parameters are compared with the working definition quantities to obtain the processing information. Here, the processing information includes the alarm information, the analysis information and the working information. According to the analysis information, the aeroderivative gas turbine is then subjected to real-time detection, and the presentation value of the analysis information is obtained in real time. Here, the presentation value includes the period duration, the time interval and the excess amplitude. According to the processing analysis of the presentation value, the alarm value is obtained. The alarm value is compared with the alarm threshold. If the alarm value is not lower than the alarm threshold, The present invention obtains the alarm value by analyzing the IGV opening of the aeroderivative gas turbine when the aeroderivative gas turbine is working. When the IGV opening of the aeroderivative gas turbine exceeds the defined IGV opening for several times, the continuous time, interval time and abnormal amplitude of the exceeding condition are analyzed in real time, so as to warn the aeroderivative gas turbine, which is suitable for improving the working performance of the aeroderivative gas turbine, avoiding failure in advance and reducing the working time of the aeroderivative gas turbine caused by failure, which is suitable for improving the working efficiency of the aeroderivative gas turbine.

[0091] The above has been detected and analyzed for the injection of the aeroderivative gas turbine, and the IGV opening alarm message has been obtained. However, in actual applications, the abnormal IGV opening of the aeroderivative gas turbine is often caused by the following factors:

[0092] 1. The IGV components of the aeroderivative gas turbine are abnormal;

[0093] 2. The exhaust temperature of the aero-derivative gas turbine is abnormal.

[0094] The present application analyzes the exhaust temperature value of the aeroderivative gas turbine when the IGV opening of the aeroderivative gas turbine is changed each time, thereby correctly confirming the alarm type of the aeroderivative gas turbine and determining whether the alarm type is an abnormal exhaust temperature value of the aeroderivative gas turbine, thereby improving the alarm efficiency of injection molding.

[0095] In a preferred but non-limiting embodiment of the present invention, after S2, the method further comprises:

[0096] S3, based on the IGV opening alarm message, during the operating period of the aeroderivative gas turbine, the exhaust temperature value of the aeroderivative gas turbine at each time the IGV opening of the aeroderivative gas turbine is changed, and by performing processing and analysis on the exhaust temperature value, an effect quantity is obtained, and it is determined whether the alarm type of the aeroderivative gas turbine is that the exhaust temperature value of the aeroderivative gas turbine is abnormal based on the effect quantity.

[0097] In a preferred but non-limiting embodiment of the present invention, in S3, the working period of the aeroderivative gas turbine is the period from the start time of the operation of the aeroderivative gas turbine to the time point when the IGV opening alarm message is generated;

[0098] The exhaust gas temperature value is transmitted by using a thermocouple to sample the aeroderivative gas turbine each time the IGV opening of the aeroderivative gas turbine is changed;

[0099] During the operation period of the aeroderivative gas turbine, the exhaust gas temperature value of the aeroderivative gas turbine with the IGV opening changed each time when the analysis message was displayed was obtained, and the temperature value previously defined by colleagues was compared;

[0100] If the exhaust gas temperature value of the aeroderivative gas turbine with each change in IGV opening is different from the defined temperature value, each change in IGV opening is registered as an abnormal exhaust gas temperature value condition;

[0101] If the exhaust temperature value of the aeroderivative gas turbine with each change of IGV opening is the same as the defined temperature value, the exhaust temperature value registered with each change of IGV opening is considered reasonable;

[0102] The frequency of abnormal exhaust gas temperature value is counted, and the quantity obtained by dividing it by the frequency of analytical message display is regarded as the condition superposition quantity 1, and it is recorded as EZd;

[0103] The condition overlap quantity 1 is: the overlap quantity of the IGV opening exceeding the IGV opening limit value and the exhaust temperature value of the aeroderivative gas turbine with each change of the IGV opening exceeding the defined temperature value during the operation of the aeroderivative gas turbine. Here, if the condition overlap quantity 1 is higher, it means that the IGV opening exceeds the IGV opening limit value for several times, and the exhaust temperature value of the aeroderivative gas turbine with each change of the IGV opening exceeds the defined temperature value for several times.

[0104] In the case of abnormal exhaust temperature value, the exhaust temperature value and IGV opening of the aeroderivative gas turbine whose IGV opening is changed each time are obtained, and the exhaust temperature value and IGV opening limit value are respectively compared with the defined temperature value and IGV opening limit value, and the abnormal exhaust temperature value is registered according to the comparison condition, which includes:

[0105] If the exhaust gas temperature is higher than the defined temperature value and the IGV opening is lower than the IGV opening limit value, the abnormal exhaust gas temperature condition is registered as an overall abnormal condition;

[0106] If the exhaust temperature is lower than the defined temperature value and the IGV opening is higher than the IGV opening limit value, the abnormal exhaust temperature condition is registered as an overall abnormal condition;

[0107] If the exhaust temperature is lower than the defined temperature and the IGV opening is lower than the ejection setting distance, the exhaust temperature abnormality is registered as a non-overall abnormality.

[0108] If the exhaust temperature is higher than the defined temperature value and the IGV opening is higher than the ejection setting distance, the exhaust temperature abnormality will be registered as a non-overall abnormality;

[0109] The frequency of the total abnormal condition in the exhaust gas temperature abnormal condition is calculated, and the quantity obtained by dividing it by the frequency of the exhaust gas temperature abnormal condition is regarded as the condition superposition quantity 2, and it is registered as ESd;

[0110] The second condition overlap is: during the operation of the aeroderivative gas turbine, if the exhaust temperature of the aeroderivative gas turbine is lower than the defined temperature value, then because the exhaust temperature becomes lower, the corresponding IGV opening will increase due to the exhaust temperature of the aeroderivative gas turbine; otherwise, if the exhaust temperature becomes higher, the corresponding IGV opening will decrease due to the exhaust temperature of the injection molding aeroderivative gas turbine. The second condition overlap reflects the frequency of abnormal exhaust temperature conditions in which the corresponding exhaust temperature is negatively correlated with the IGV opening within all abnormal exhaust temperature conditions. The greater the frequency, the higher the second condition overlap, which indicates that the effect of the solution exhaust temperature on its IGV opening is higher.

[0111] Obtain the deviation of the exhaust temperature value and the deviation of the IGV opening corresponding to the overall abnormal condition, and mark them in the Cartesian system (the horizontal axis is the deviation of the exhaust temperature value, and the vertical axis is the deviation of the IGV opening), and connect the adjacent pairs of value points with line segments after marking to obtain the condition change line;

[0112] Here, the deviation of the exhaust temperature value is the modulus of the quantity obtained by subtracting the defined temperature value from the exhaust temperature value, and the deviation of the IGV opening is the modulus of the quantity obtained by subtracting the IGV opening limit value from the IGV opening;

[0113] Treat each line segment in the status change line as a sub-line;

[0114] The total number of sub-lines with derivatives higher than zero is counted, and the amount obtained by dividing it by the total number of sub-lines is taken as the azimuth coordination amount, and it is registered as UC;

[0115] Measure the vertical spans of all sub-lines and combine them into span value clusters. Obtain the standard deviation of the span value clusters and use it as the span deviation presentation amount and register it as GD.

[0116] The obtained azimuth coordination value UC and span deviation value GD are numerically processed through the equation: Obtain the state superposition value ETd, where χ and θ are both predefined ratio factors;

[0117] The condition superposition quantity three is: in the overall abnormal condition, as the exhaust temperature value exceeds the amplitude, the IGV opening value also increases, and the change of the IGV opening shows a traceable ratio change along with the change of the exhaust temperature value. The higher the condition superposition quantity three is, the better the coordination between the exhaust temperature value and the IGV opening is, and the higher the effect of the exhaust temperature value of the aero-derivative gas turbine on its IGV opening is.

[0118] The obtained state superposition value 1 EZd, state superposition value 2 ESd and state superposition value 3 ETd are numerically processed and the equation Get the action ZY, where β1, β2 and β3 are all predefined ratio factors;

[0119] The action amount and the action critical amount are compared, and the comparison method includes:

[0120] If the action quantity ZY is not lower than the action critical quantity, it indicates that during the operation of the aeroderivative gas turbine, when the IGV opening exceeds the IGV opening limit value for several times, the exhaust temperature value also exceeds the defined temperature value, and the change of the exhaust temperature value and the change of the IGV opening are negatively correlated, and the higher the exhaust temperature value exceeds, the higher the IGV opening exceeds, which means that the exhaust temperature value of the aeroderivative gas turbine makes the IGV opening abnormal, so the alarm type of the aeroderivative gas turbine is the abnormal exhaust temperature alarm of the aeroderivative gas turbine;

[0121] If the action quantity ZY is lower than the action critical quantity, it indicates that during the operation of the aeroderivative gas turbine, it is not the exhaust temperature of the aeroderivative gas turbine that causes the abnormal IGV opening. In this case, a specific inspection is performed on other alarm elements, including: on-site inspection of alarm elements such as IGV damage and gas turbine control circuit.

[0122] According to the IGV opening alarm message, during the operating period of the aeroderivative gas turbine, the exhaust temperature value of the aeroderivative gas turbine at each time the IGV opening of the aeroderivative gas turbine is changed, and the action value is obtained by performing processing analysis on the exhaust temperature value, and it is determined according to the action value whether the alarm type of the aeroderivative gas turbine is an abnormal exhaust temperature value of the aeroderivative gas turbine. The present invention analyzes whether the aeroderivative gas turbine alarm is caused by the abnormal exhaust temperature value of the aeroderivative gas turbine by analyzing the change coordination between the exhaust temperature value of the aeroderivative gas turbine and the IGV opening, thereby determining its alarm type, and achieving accurate confirmation of the aeroderivative gas turbine operation alarm, which is suitable for the operation improvement of the aeroderivative gas turbine, and if the alarm is caused by the abnormal exhaust temperature value of the non-aeroderivative gas turbine, it is suitable for efficient detection of other alarm factors.

[0123] like Figure 2 As shown, the aeroderivative gas turbine IGV regulating device of the present invention comprises:

[0124] The opening meter, thermocouple and LCD screen are all connected to the controller. The opening meter is used to sample the IGV opening of the gas turbine and transmit it to the controller. The thermocouple is used to sample the exhaust temperature value of the gas turbine and transmit it to the controller. The controller is used to send the collected IGV opening and exhaust temperature values ​​of the gas turbine to the LCD screen for display, so as to monitor the IGV opening and exhaust temperature value of the gas turbine during the warm-up load adjustment period of the gas turbine.

[0125] The modules on the controller include:

[0126] A detection module, which is used to detect and obtain the working parameters of the aeroderivative gas turbine in the working period in real time;

[0127] A parsing module, which is used to perform real-time detection on the aeroderivative gas turbine according to the parsing message and obtain the presentation value of the parsing message in real time;

[0128] The confirmation module is used for obtaining the exhaust temperature value of the aeroderivative gas turbine at each time the IGV opening of the aeroderivative gas turbine is changed during the working period of the aeroderivative gas turbine according to the IGV opening alarm message, obtaining the action amount by performing processing analysis on the exhaust temperature value, and determining whether the alarm type of the aeroderivative gas turbine is that the exhaust temperature value of the aeroderivative gas turbine is abnormal according to the action amount.

[0129] The beneficial effect of the present invention is that, compared with the prior art, the present invention can detect and obtain the working parameters of the aeroderivative gas turbine in the working period in real time, wherein the working parameters include the IGV opening of the aeroderivative gas turbine, compare the working parameters with the working definition quantity, and obtain the processing message, wherein the processing message includes the alarm message, the analysis message and the working message, and then perform real-time detection on the aeroderivative gas turbine according to the analysis message, and obtain the presentation value of the analysis message in real time, wherein the presentation value includes the period duration, the time interval and the The amplitude exceeds the value, and the alarm value is obtained by performing processing analysis on the presented value, and the alarm value is compared with the alarm threshold. If the alarm value is not lower than the alarm threshold, an IGV opening alarm message is generated. The present invention performs analysis on the IGV opening of the aeroderivative gas turbine when the aeroderivative gas turbine is working, and obtains the alarm value. When the IGV opening of the aeroderivative gas turbine exceeds the defined IGV opening several times, the continuous time, interval time and abnormal amplitude of the exceeding state are immediately analyzed, so as to detect the aeroderivative gas turbine. The turbine alarm is conducive to improving the working performance of the aeroderivative gas turbine, avoiding failure in advance and reducing the working time of the aeroderivative gas turbine caused by failure of the aeroderivative gas turbine, which is conducive to improving the working efficiency of the aeroderivative gas turbine; according to the IGV opening alarm message, during the working period of the aeroderivative gas turbine, the exhaust temperature value of the aeroderivative gas turbine at each time the IGV opening of the aeroderivative gas turbine is changed, and the action amount is obtained by performing treatment analysis on the exhaust temperature value, and the alarm of the aeroderivative gas turbine is determined according to the action amount. Whether the alarm type is an abnormal exhaust temperature value of the aeroderivative gas turbine, the present invention analyzes whether the aeroderivative gas turbine alarm is caused by the abnormal exhaust temperature value of the aeroderivative gas turbine by analyzing the change coordination between the exhaust temperature value of the aeroderivative gas turbine and the IGV opening, thereby identifying the alarm type and achieving accurate confirmation of the aeroderivative gas turbine operation alarm, which is conducive to the operation improvement of the aeroderivative gas turbine, and if the alarm is caused by the abnormal exhaust temperature value of a non-aeroderivative gas turbine, it is convenient to perform efficient detection of other alarm factors.

[0130] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not deviate from the spirit and scope of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for adjusting an aeroderivative gas turbine IGV, characterized in that: include: The IGV opening and exhaust temperature of the gas turbine are adjusted through the gas turbine control loop of the aeroderivative gas turbine to achieve the adjustment of the gas turbine warm-up load of the aeroderivative gas turbine, and the opening meter samples the IGV opening of the gas turbine and transmits it to the controller, and the thermocouple samples the exhaust temperature of the gas turbine and transmits it to the controller. The controller sends the collected IGV opening and exhaust temperature of the gas turbine to the LCD screen for display, thereby achieving the monitoring of the IGV opening and exhaust temperature of the gas turbine during the gas turbine warm-up load adjustment period; After receiving the IGV opening and exhaust gas temperature of the gas turbine, the controller also includes: S1, real-time detection and acquisition of the working parameters of the aeroderivative gas turbine during the working period; S2, based on the parsed information, then perform real-time detection on the aero-derivative gas turbine and obtain the presentation value of the parsed information in real time.

2. The aeroderivative gas turbine IGV adjustment method according to claim 1, characterized in that: In S1, the working parameters include the IGV opening of the aero-derivative gas turbine. The working parameters are compared with the working definition quantities to obtain a processing message. Here, the processing message includes an alarm message, an analysis message and a working message. The working definition quantity includes a pre-defined IGV opening limit value.

3. The aeroderivative gas turbine IGV adjustment method according to claim 2, characterized in that: In S1, the IGV opening of the aeroderivative gas turbine is obtained, and the opening is compared with the IGV opening limit value and the IGV opening reference range respectively; If the IGV opening exceeds the IGV opening limit value and is not within the IGV opening reference range, an alarm message is generated; If the IGV opening exceeds the IGV opening limit value and is within the IGV opening reference range, a parsing message is generated; If the IGV opening does not exceed the IGV opening limit value, a working message is generated.

4. The aeroderivative gas turbine IGV adjustment method according to claim 3, characterized in that: In S1, the method for obtaining the IGV opening reference interval is: obtain the IGV opening defined in advance before the operation of the aeroderivative gas turbine, that is, the IGV opening limit value, and perform total processing on the root mean square difference between it and the actual value of the IGV opening to obtain the IGV opening reference interval. For example, the IGV opening defined in advance before the operation of the aeroderivative gas turbine is named KM, and the root mean square difference of the IGV opening ±XD is obtained, then the IGV opening reference interval is [KM-XD, KM+XD].

5. The aeroderivative gas turbine IGV adjustment method according to claim 4, characterized in that: In S2, the presented value includes the duration, the time interval and the excess amplitude. The presented value is processed and analyzed to obtain the alarm value. The alarm value is compared with the alarm threshold. If the alarm value is not lower than the alarm threshold, an IGV opening alarm message is generated. In S2, the frequency of the real-time detection analysis message display and the time taken for the aeroderivative gas turbine to change the IGV opening once are multiplied to obtain the excess time amount, and the excess time amount is divided by the working time of the aeroderivative gas turbine to obtain the time duration amount, which is named DY; In S2, the frequency of the working message appearing between the analysis messages is detected and counted in real time, and the frequency is multiplied by the time it takes for the aero-derivative gas turbine to change the IGV opening once, so as to obtain the total time between the analysis messages; The total frequency of the parsing messages separated by the working messages, that is, the interval frequency between the parsing messages, the total time of the parsing message interval divided by the interval frequency between the parsing messages is taken as the mean time of the parsing message interval, and the mean time of the parsing message interval divided by the time of the working period of the aeroderivative gas turbine is taken as the time interval, and it is named KH; In S2, the IGV opening of the aero-derivative gas turbine is obtained in real time when each analytical message is displayed, and the opening is subtracted from the IGV opening limit value, and the modulus of the subtracted amount is used as the corresponding IGV opening reduction when the analytical message is displayed. The corresponding IGV opening reductions when all analytical messages are displayed are added up and the average of the accumulated amounts is taken as the average IGV opening reduction. The amount obtained by dividing the average IGV opening reduction by the IGV opening limit value is taken as the excess amplitude, and is named QM.

6. The aeroderivative gas turbine IGV adjustment method according to claim 5, characterized in that: In S2, the obtained period duration DY, time interval KH and excess amplitude QM are numerically processed through the equation: Get the alarm value ZK, where t1, t2 and t3 are all pre-defined ratio factors.

7. The aeroderivative gas turbine IGV adjustment method according to claim 6, characterized in that: In S2, the alarm value ZK is compared with the alarm threshold value, and the comparison method includes: The predefined alarm threshold is Zz; If the alarm value ZK is not lower than the alarm threshold value Zz, an IGV opening alarm message is generated; If the alarm value YJ is lower than the alarm threshold, it means that the IGV opening of the aeroderivative gas turbine has not exceeded the IGV opening limit value several times and continuously during the working period, and the IGV opening is not close to the boundary of the IGV opening reference interval. There is no need to execute an alarm, and the aeroderivative gas turbine continues to work and continues to perform real-time detection.

8. The aeroderivative gas turbine IGV adjustment method according to claim 7, characterized in that: After S2, it also includes: S3, based on the IGV opening alarm message, during the operating period of the aeroderivative gas turbine, the exhaust temperature value of the aeroderivative gas turbine at each time the IGV opening of the aeroderivative gas turbine is changed, and by performing processing and analysis on the exhaust temperature value, an effect quantity is obtained, and it is determined whether the alarm type of the aeroderivative gas turbine is that the exhaust temperature value of the aeroderivative gas turbine is abnormal based on the effect quantity.

9. The aeroderivative gas turbine IGV adjustment method according to claim 8, characterized in that: In S3, the working period of the aeroderivative gas turbine is the period from the start time of the operation of the aeroderivative gas turbine to the time point when the IGV opening alarm message is generated; The exhaust gas temperature value is transmitted by using a thermocouple to sample the aeroderivative gas turbine each time the IGV opening of the aeroderivative gas turbine is changed; During the operation period of the aeroderivative gas turbine, the exhaust gas temperature value of the aeroderivative gas turbine with the IGV opening changed each time when the analysis message was displayed was obtained, and the temperature value previously defined by colleagues was compared; If the exhaust gas temperature value of the aeroderivative gas turbine with each change in IGV opening is different from the defined temperature value, each change in IGV opening is registered as an abnormal exhaust gas temperature value condition; If the exhaust temperature value of the aeroderivative gas turbine with each change of IGV opening is the same as the defined temperature value, the exhaust temperature value registered with each change of IGV opening is considered reasonable; The frequency of abnormal exhaust gas temperature value is counted, and the quantity obtained by dividing it by the frequency of analytical message display is regarded as the condition superposition quantity 1, and it is recorded as EZd; In the case of abnormal exhaust temperature value, the exhaust temperature value and IGV opening of the aeroderivative gas turbine whose IGV opening is changed each time are obtained, and the exhaust temperature value and IGV opening limit value are respectively compared with the defined temperature value and IGV opening limit value, and the abnormal exhaust temperature value is registered according to the comparison condition, which includes: If the exhaust gas temperature is higher than the defined temperature value and the IGV opening is lower than the IGV opening limit value, the abnormal exhaust gas temperature condition is registered as an overall abnormal condition; If the exhaust temperature is lower than the defined temperature value and the IGV opening is higher than the IGV opening limit value, the abnormal exhaust temperature condition is registered as an overall abnormal condition; If the exhaust temperature is lower than the defined temperature and the IGV opening is lower than the ejection setting distance, the exhaust temperature abnormality is registered as a non-overall abnormality. If the exhaust temperature is higher than the defined temperature value and the IGV opening is higher than the ejection setting distance, the exhaust temperature abnormality will be registered as a non-overall abnormality; The frequency of the total abnormal condition in the exhaust gas temperature abnormal condition is calculated, and the quantity obtained by dividing it by the frequency of the exhaust gas temperature abnormal condition is regarded as the condition superposition quantity 2, and it is registered as ESd; Obtain the deviation of the exhaust gas temperature value and the deviation of the IGV opening corresponding to the overall abnormal condition, and mark them in the Cartesian system respectively, and connect the adjacent pairs of value points with line segments after marking to obtain the condition change line; Here, the deviation of the exhaust temperature value is the modulus of the quantity obtained by subtracting the defined temperature value from the exhaust temperature value, and the deviation of the IGV opening is the modulus of the quantity obtained by subtracting the IGV opening limit value from the IGV opening; Treat each line segment in the status change line as a sub-line; The total number of sub-lines with derivatives higher than zero is counted, and the amount obtained by dividing it by the total number of sub-lines is taken as the azimuth coordination amount, and it is registered as UC; Measure the vertical spans of all sub-lines and combine them into span value clusters. Obtain the standard deviation of the span value clusters and use it as the span deviation presentation amount and register it as GD. The obtained azimuth coordination value UC and span deviation value GD are numerically processed through the equation: Obtain the state superposition value ETd, where χ and θ are both predefined ratio factors; The obtained state superposition value 1 EZd, state superposition value 2 ESd and state superposition value 3 ETd are numerically processed and the equation Get the action ZY, where β1, β2 and β3 are all predefined ratio factors; The action amount and the action critical amount are compared, and the comparison method includes: If the action quantity ZY is not lower than the action critical quantity, it indicates that during the operation of the aeroderivative gas turbine, the alarm type of the aeroderivative gas turbine is an abnormal exhaust gas temperature alarm of the aeroderivative gas turbine; If the action quantity ZY is lower than the action critical quantity, it indicates that during the operation of the aeroderivative gas turbine, it is not the exhaust gas temperature of the aeroderivative gas turbine that causes the IGV opening to be abnormal, and specific checks are performed on other alarm elements.

10. An aeroderivative gas turbine IGV regulating device, characterized in that: include: The opening meter, thermocouple and LCD screen are all connected to the controller. The opening meter is used to sample the IGV opening of the gas turbine and transmit it to the controller. The thermocouple is used to sample the exhaust temperature value of the gas turbine and transmit it to the controller. The controller is used to send the collected IGV opening and exhaust temperature values ​​of the gas turbine to the LCD screen for display, so as to monitor the IGV opening and exhaust temperature value of the gas turbine during the warm-up load adjustment period of the gas turbine. The modules on the controller include: A detection module, which is used to detect and obtain the working parameters of the aeroderivative gas turbine in the working period in real time; A parsing module, which is used to perform real-time detection on the aeroderivative gas turbine according to the parsing message and obtain the presentation value of the parsing message in real time; The confirmation module is used for obtaining the exhaust temperature value of the aeroderivative gas turbine at each time the IGV opening of the aeroderivative gas turbine is changed during the working period of the aeroderivative gas turbine according to the IGV opening alarm message, obtaining the action amount by performing processing analysis on the exhaust temperature value, and determining whether the alarm type of the aeroderivative gas turbine is that the exhaust temperature value of the aeroderivative gas turbine is abnormal according to the action amount.

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