A method and system for predicting the output of a low-pressure cylinder of a unit

Abstract

The application discloses a unit low-pressure cylinder output prediction method and system, and relates to the technical field of unit power supply. Based on the future power generation planning of a generator unit, corresponding power distribution requirements are determined in a preset generator unit power distribution meter, and a unit low-pressure cylinder output strategy is configured based on unit power distribution requirements. Based on the power distribution requirements of different time nodes of the unit low-pressure cylinder, an original low-pressure steam configuration strategy is constructed for the output state of different time periods of the unit low-pressure cylinder, the steam load of different time periods in the original low-pressure steam configuration strategy is adjusted multiple times, and a virtual low-pressure steam configuration strategy is generated. According to the running state of the unit low-pressure cylinder under the steam load of different time periods, the thermal efficiency evaluation weight and the responsiveness evaluation weight are configured, and the comprehensive value is evaluated to obtain a comprehensive evaluation value. The comprehensive evaluation value of the original low-pressure steam configuration strategy and the comprehensive evaluation value of the virtual low-pressure steam configuration strategy are compared in size, and the current low-pressure steam configuration strategy is determined.

Description

Technical Field

[0001] This invention relates to the field of generator power supply technology, and in particular to a method and system for predicting the output of the low-pressure cylinder of a generator unit. Background Technology

[0002] In steam turbines, the low-pressure cylinder is an integral component. Low-pressure cylinder power output technology, as a power plant operation solution, boasts significant peak-shaving capabilities, low retrofit costs, and high economic efficiency, demonstrating its promising future. However, many practical problems remain to be solved before its widespread application. For example, at low loads, the low-pressure cylinder's thermal efficiency is relatively low, leading to insufficient unit output, slow response, and the low-pressure cylinder's operating rate failing to meet requirements.

[0003] To address the aforementioned issues, there is an urgent need for a method to predict the output of the low-pressure cylinder of a generator unit that can improve the thermal efficiency and response speed of the low-pressure cylinder. Such a method is of great significance to the development of generator unit power supply technology. Summary of the Invention

[0004] The purpose of this invention is to provide a method and system for predicting the output of the low-pressure cylinder of a generator unit, which can effectively improve the thermal efficiency and response speed of the low-pressure cylinder when it is in operation.

[0005] The technical solution adopted in this invention is: a method for predicting the output of a generator low-pressure cylinder, comprising: determining the corresponding power distribution demand in a preset generator power distribution table based on the future power generation plan of the generator set, and configuring the output strategy of the generator low-pressure cylinder based on the power distribution demand of the generator set;

[0006] Based on the power distribution requirements of the unit's low-pressure cylinder at different time points, the original low-pressure steam configuration strategy is constructed for the output status of the unit's low-pressure cylinder at different time periods.

[0007] The steam load in the original low-pressure steam configuration strategy is adjusted multiple times for different time periods, and a virtual low-pressure steam configuration strategy is generated for each adjustment.

[0008] Based on the operating status of the low-pressure cylinder of the unit under different steam loads at different times, thermal efficiency evaluation weights and responsiveness evaluation weights are configured, and the original low-pressure steam configuration strategy and several virtual low-pressure steam configuration strategies are comprehensively evaluated based on the thermal efficiency evaluation weights and responsiveness evaluation weights to obtain their respective comprehensive evaluation values.

[0009] The comprehensive evaluation values ​​of the original low-pressure steam configuration strategy and the virtual low-pressure steam configuration strategy are compared, and the low-pressure steam configuration strategy with the largest comprehensive evaluation value is determined as the current low-pressure steam configuration strategy.

[0010] The low-pressure cylinder of the generator unit is driven to output power based on the current low-pressure steam configuration strategy.

[0011] In some embodiments of this application, the method for determining the corresponding power distribution demand in a preset generator set power distribution table based on the future power generation plan of the generator set includes:

[0012] The first step is to analyze and predict the future power generation plan of the generator set;

[0013] The second step is to determine the load changes of each generator unit based on future power generation plans.

[0014] Step 3: Determine the corresponding power distribution demand based on load changes in the preset generator set power distribution table.

[0015] In some embodiments of this application, the future power generation planning includes: obtaining power load forecasts for different time periods based on generator scheduling and grid operation control for different time periods.

[0016] In some embodiments of this application, the method for constructing the original low-pressure steam configuration strategy for different steam load states of the unit's low-pressure cylinder based on the power supply requirements at different time points of the unit's low-pressure cylinder includes:

[0017] A steam load model is established based on the historical power supply demand and historical low-pressure steam load data of the unit's low-pressure cylinder.

[0018] A power supply model is established based on the historical low-pressure steam configuration of the unit's low-pressure cylinder;

[0019] By associating the steam load model and the power supply model according to the same time points, a historical low-pressure steam configuration judgment model is generated.

[0020] Based on the historical low-pressure steam configuration judgment model, the current power distribution demand is analyzed, and the steam load and low-pressure steam configuration of the unit's low-pressure cylinder at different time periods are predicted. Based on the prediction results, the original low-pressure steam configuration strategy is determined.

[0021] In some embodiments of this application, the method of adjusting the steam load at different times in the original low-pressure steam configuration strategy multiple times and generating a virtual low-pressure steam configuration strategy for each adjustment includes:

[0022] Determine the range of low-pressure steam configuration of the unit's low-pressure cylinder in the original low-pressure steam configuration strategy, divide this range into multiple sub-ranges, adjust the multiple sub-ranges, and determine the average low-pressure steam configuration of each sub-range.

[0023] Multiple virtual low-pressure steam configuration strategies are generated based on the average low-pressure steam configuration of multiple sub-intervals.

[0024] In some embodiments of this application, the method for configuring thermal efficiency evaluation weights based on the operating status of the unit's low-pressure cylinder under steam load at different times includes:

[0025] When configuring thermal efficiency evaluation weights for the low-pressure cylinder of the unit, the output of the low-pressure cylinder under steam load at different time periods is analyzed, and the steam supply corresponding to the low-pressure cylinder at different outputs is analyzed. The thermal efficiency evaluation weights are configured based on the AHP (Analytic Hierarchy Process).

[0026] In some embodiments of this application, the method for configuring thermal efficiency evaluation weights and responsiveness evaluation weights based on the operating status of the low-pressure cylinder of the unit under different steam loads at different times includes:

[0027] When configuring the output of the low-pressure cylinder of the unit with thermal efficiency evaluation weights, the output of the low-pressure cylinder of the unit under steam load at different times is analyzed, and the thermal efficiency evaluation weights are configured in combination with the steam supply under steam load at different times.

[0028] When configuring responsiveness evaluation weights for the low-pressure cylinder output of the unit, the response speed from the start of steam supply to the low-pressure cylinder output of the unit is analyzed and responsiveness evaluation weights are configured.

[0029] In some embodiments of this application, the expression for calculating the thermal efficiency evaluation weight is as follows:

[0030] E = (K1S1 + K2S2 + K3S3 + ... + K n S n ) / (T1+T2+T3+...+T n )

[0031] Where K1 is the first thermal efficiency conversion weight, K2 is the second thermal efficiency conversion weight, K3 is the third thermal efficiency conversion weight, and K... n Let S1 be the power generation under the steam load in the first time period, S2 be the power generation under the steam load in the second time period, and S3 be the power generation under the steam load in the third time period. n Let T1 be the power generation under the steam load in the nth time period, T2 be the heat supply under the steam load in the first time period, T3 be the heat supply under the steam load in the second time period, and T4 be the heat supply under the steam load in the third time period. n This represents the heat supply under the steam load in the nth time period.

[0032] In some embodiments of this application, the method for assigning responsiveness evaluation weights to the low-pressure cylinder output configuration of the unit includes:

[0033] By simulating the operation of the low-pressure cylinder output of the unit, its response speed under steam load at different time periods is analyzed, and the responsiveness evaluation weight is configured in conjunction with the conversion coefficient. The expression for calculating the responsiveness evaluation weight is as follows:

[0034] R = C1V1 + C2V2 + ... + C n V n

[0035] V1 represents the response rate under the steam load in the first time period, and V2 represents the response rate under the steam load in the second time period. n Let C1 be the response rate under the steam load in the nth time period, C2 be the response conversion coefficient under the steam load in the first time period, and C3 be the response conversion coefficient under the steam load in the second time period. n is the response conversion coefficient under the steam load in the nth time period.

[0036] In some embodiments of this application, a low-pressure cylinder output prediction system for a generator set is also disclosed, comprising:

[0037] The power distribution demand generation module is used to determine the corresponding power distribution demand from the preset power distribution table of the generator set based on the future power generation plan of the generator set.

[0038] The low-pressure steam configuration strategy construction module is used to construct the original low-pressure steam configuration strategy based on the power distribution requirements of the unit's low-pressure cylinder at different time nodes and the output status of the unit's low-pressure cylinder at different time periods. It also makes multiple adjustments to the steam load at different time periods in the original low-pressure steam configuration strategy and generates a virtual low-pressure steam configuration strategy for each adjustment.

[0039] The comprehensive evaluation module is used to configure thermal efficiency evaluation weights and responsiveness evaluation weights according to the operating status of the low-pressure cylinder of the unit under steam load at different times, and to conduct a comprehensive value evaluation of the original low-pressure steam configuration strategy and several virtual low-pressure steam configuration strategies based on the thermal efficiency evaluation weights and responsiveness evaluation weights.

[0040] The unit drive module is used to drive the unit's low-pressure cylinder to output power according to the current low-pressure steam configuration strategy.

[0041] The beneficial effects of this invention are:

[0042] 1. Configure thermal efficiency evaluation weights and responsiveness evaluation weights, and provide calculation formulas for thermal efficiency evaluation weights and responsiveness evaluation weights. Through their evaluation criteria, effectively improve the thermal efficiency and response speed of the unit's low-pressure cylinder output.

[0043] 2. By determining the comprehensive evaluation value of the low-pressure steam configuration strategy, selecting and applying the low-pressure steam configuration strategy with the highest comprehensive evaluation value, the practicality and operational effect of the unit's low-pressure cylinder output are greatly improved.

[0044] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0045] Figure 1 This is a schematic diagram illustrating the steps of a method for predicting the output of a low-pressure cylinder in a generator unit, as described in an embodiment of this application.

[0046] Figure 2 This is a schematic diagram of the module connection of a low-pressure cylinder output prediction system for a generator unit according to an embodiment of this application. Detailed Implementation

[0047] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0048] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. It should be understood that the preferred embodiments described herein are only for illustration and explanation of the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments based on the following content of the present invention. In this invention, unless otherwise expressly specified and limited, the technical terms used in this application should have the ordinary meaning understood by those skilled in the art.

[0049] Example:

[0050] The purpose of this invention is to provide a method and system for predicting the output of the low-pressure cylinder of a generator unit.

[0051] A method for predicting the output of a generator low-pressure cylinder includes:

[0052] S1: Based on the future power generation plan of the generator set, determine the corresponding power distribution demand in the preset generator set power distribution table, and configure the output strategy of the low-pressure cylinder of the generator set based on the power distribution demand of the generator set.

[0053] It's important to understand that pre-designed generator set distribution meters refer to instruments pre-designed before the generator set starts operating, based on parameters such as the generator set's rated power, voltage, and current. These instruments are used to monitor and control the generator set's power distribution system. They can monitor the generator set's output voltage, current, frequency, and other parameters in real time and transmit this data to the control system for remote monitoring and management of the generator set.

[0054] S2: Based on the power distribution requirements of the unit's low-pressure cylinder at different time points, construct the original low-pressure steam configuration strategy for the output status of the unit's low-pressure cylinder at different time periods.

[0055] It's important to understand that the power distribution requirements of the low-pressure cylinder at different time points refer to the power load needed by the low-pressure cylinder at different times during unit operation. These time points include stages such as startup, acceleration, deceleration, and shutdown. The power load required by the low-pressure cylinder will vary at different stages, therefore, power distribution design and adjustments need to be made according to the actual situation.

[0056] S3: Adjust the steam load for different time periods in the original low-pressure steam configuration strategy multiple times, and generate a virtual low-pressure steam configuration strategy for each adjustment.

[0057] S4: Configure thermal efficiency evaluation weights and responsiveness evaluation weights according to the operating status of the low-pressure cylinder of the unit under different steam loads at different times, and conduct a comprehensive value evaluation of the original low-pressure steam configuration strategy and several virtual low-pressure steam configuration strategies based on the thermal efficiency evaluation weights and responsiveness evaluation weights to obtain their respective comprehensive evaluation values.

[0058] It's important to understand that thermal efficiency evaluation weighting refers to the weight allocation of different influencing factors when assessing the performance of a generator set. Thermal efficiency is a crucial indicator used to measure the energy utilization efficiency of the generator set. Response, on the other hand, measures the generator set's speed of response to load changes.

[0059] S5: Compare the comprehensive evaluation value of the original low-pressure steam configuration strategy and the comprehensive evaluation value of the virtual low-pressure steam configuration strategy, and determine the low-pressure steam configuration strategy with the largest comprehensive evaluation value as the current low-pressure steam configuration strategy.

[0060] It is important to understand that the method for determining the low-pressure steam configuration strategy with the highest comprehensive evaluation value as the current low-pressure steam configuration strategy is as follows: the comprehensive evaluation values ​​of all obtained virtual low-pressure steam configuration strategies are compared to obtain the virtual low-pressure steam configuration strategy with the highest comprehensive evaluation value. Then, the comprehensive evaluation value of the virtual low-pressure steam configuration strategy with the highest comprehensive evaluation value is compared with the comprehensive evaluation value of the original low-pressure steam configuration strategy to obtain the low-pressure steam configuration strategy with the highest comprehensive evaluation value. Finally, the low-pressure steam configuration strategy with the highest comprehensive evaluation value is determined as the current low-pressure steam configuration strategy.

[0061] S6: Drive the low-pressure cylinder of the unit to output power based on the current low-pressure steam configuration strategy.

[0062] In some embodiments of this application, the method for determining the corresponding power distribution demand in a preset generator set power distribution table based on the future power generation plan of the generator set includes:

[0063] The first step is to analyze and predict the future power generation plan of the generator set;

[0064] The second step is to determine the load changes of each generator unit based on future power generation plans.

[0065] Step 3: Determine the corresponding power distribution demand based on load changes in the preset generator set power distribution table.

[0066] In some embodiments of this application, the future power generation planning includes: obtaining power load forecasts for different time periods based on generator scheduling and grid operation control for different time periods.

[0067] In some embodiments of this application, the method for constructing the original low-pressure steam configuration strategy for different steam load states of the unit's low-pressure cylinder based on the power supply requirements at different time points of the unit's low-pressure cylinder includes:

[0068] A steam load model is established based on the historical power supply demand and historical low-pressure steam load data of the unit's low-pressure cylinder.

[0069] A power supply model is established based on the historical low-pressure steam configuration of the unit's low-pressure cylinder;

[0070] By associating the steam load model and the power supply model according to the same time points, a historical low-pressure steam configuration judgment model is generated.

[0071] Based on the historical low-pressure steam configuration judgment model, the current power distribution demand is analyzed, and the steam load and low-pressure steam configuration of the unit's low-pressure cylinder at different time periods are predicted. Based on the prediction results, the original low-pressure steam configuration strategy is determined.

[0072] In some embodiments of this application, the method of adjusting the steam load at different times in the original low-pressure steam configuration strategy multiple times and generating a virtual low-pressure steam configuration strategy for each adjustment includes:

[0073] Determine the range of low-pressure steam configuration of the unit's low-pressure cylinder in the original low-pressure steam configuration strategy, divide this range into multiple sub-ranges, adjust the multiple sub-ranges, and determine the average low-pressure steam configuration of each sub-range.

[0074] Multiple virtual low-pressure steam configuration strategies are generated based on the average low-pressure steam configuration of multiple sub-intervals.

[0075] In some embodiments of this application, the method for configuring thermal efficiency evaluation weights based on the operating status of the unit's low-pressure cylinder under steam load at different times includes:

[0076] When configuring thermal efficiency evaluation weights for the low-pressure cylinder of the unit, the output of the low-pressure cylinder under steam load at different time periods is analyzed, and the steam supply corresponding to the low-pressure cylinder at different outputs is analyzed. The thermal efficiency evaluation weights are configured based on the AHP (Analytic Hierarchy Process).

[0077] In some embodiments of this application, the method for configuring thermal efficiency evaluation weights and responsiveness evaluation weights based on the operating status of the low-pressure cylinder of the unit under different steam loads at different times includes:

[0078] When configuring the output of the low-pressure cylinder of the unit with thermal efficiency evaluation weights, the output of the low-pressure cylinder of the unit under steam load at different times is analyzed, and the thermal efficiency evaluation weights are configured in combination with the steam supply under steam load at different times.

[0079] When configuring responsiveness evaluation weights for the low-pressure cylinder output of the unit, the response speed from the start of steam supply to the low-pressure cylinder output of the unit is analyzed and responsiveness evaluation weights are configured.

[0080] In some embodiments of this application, the expression for calculating the thermal efficiency evaluation weight is as follows:

[0081] E = (K1S1 + K2S2 + K3S3 + ... + K n S n ) / (T1+T2+T3+...+T n )

[0082] Where K1 is the first thermal efficiency conversion weight, K2 is the second thermal efficiency conversion weight, K3 is the third thermal efficiency conversion weight, and K... n Let S1 be the power generation under the steam load in the first time period, S2 be the power generation under the steam load in the second time period, and S3 be the power generation under the steam load in the third time period. n Let T1 be the power generation under the steam load in the nth time period, T2 be the heat supply under the steam load in the first time period, T3 be the heat supply under the steam load in the second time period, and T4 be the heat supply under the steam load in the third time period. n This represents the heat supply under the steam load in the nth time period.

[0083] In some embodiments of this application, the method for assigning responsiveness evaluation weights to the low-pressure cylinder output configuration of the unit includes:

[0084] By simulating the operation of the low-pressure cylinder output of the unit, its response speed under steam load at different time periods is analyzed, and the responsiveness evaluation weight is configured in conjunction with the conversion coefficient. The expression for calculating the responsiveness evaluation weight is as follows:

[0085] R = C1V1 + C2V2 + ... + C n V n

[0086] V1 represents the response rate under the steam load in the first time period, and V2 represents the response rate under the steam load in the second time period. nLet C1 be the response rate under the steam load in the nth time period, C2 be the response conversion coefficient under the steam load in the first time period, and C3 be the response conversion coefficient under the steam load in the second time period. n is the response conversion coefficient under the steam load in the nth time period.

[0087] In some embodiments of this application, a low-pressure cylinder output prediction system for a generator unit is also disclosed, including: a power distribution demand generation module, a low-pressure steam configuration strategy construction module, a comprehensive evaluation module, and a generator unit drive module.

[0088] The power distribution demand generation module is used to determine the corresponding power distribution demand in the preset power distribution table of the generator set based on the future power generation plan of the generator set.

[0089] The low-pressure steam configuration strategy construction module is used to construct the original low-pressure steam configuration strategy based on the power distribution requirements of the low-pressure cylinder of the unit at different time nodes and the output status of the low-pressure cylinder of the unit at different time periods. It also makes multiple adjustments to the steam load of the original low-pressure steam configuration strategy at different time periods and generates a virtual low-pressure steam configuration strategy for each adjustment.

[0090] The comprehensive evaluation module is used to configure thermal efficiency evaluation weights and responsiveness evaluation weights according to the operating status of the low-pressure cylinder of the unit under steam load at different times, and to conduct a comprehensive value evaluation of the original low-pressure steam configuration strategy and several virtual low-pressure steam configuration strategies based on the thermal efficiency evaluation weights and responsiveness evaluation weights.

[0091] The unit drive module is used to drive the low-pressure cylinder of the unit to output power according to the current low-pressure steam configuration strategy.

[0092] The beneficial effects of this invention are:

[0093] 1. Configure thermal efficiency evaluation weights and responsiveness evaluation weights, and provide calculation formulas for thermal efficiency evaluation weights and responsiveness evaluation weights. Through their evaluation criteria, effectively improve the thermal efficiency and response speed of the unit's low-pressure cylinder output.

[0094] 2. By determining the comprehensive evaluation value of the low-pressure steam configuration strategy, selecting and applying the low-pressure steam configuration strategy with the highest comprehensive evaluation value, the practicality and operational effect of the unit's low-pressure cylinder output are greatly improved.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for predicting the output of a low-pressure cylinder of a unit, characterized by, The method comprises the following steps: Based on the future power generation planning of the generator set, the corresponding power distribution demand in the preset generator set power distribution table is determined, and the output strategy of the low-pressure cylinder of the generator set is configured based on the power distribution demand of the generator set; Based on the power distribution demand of the low-pressure cylinder of the generator set at different time nodes, the original low-pressure steam configuration strategy is constructed for the output state of the low-pressure cylinder of the generator set at different time periods; The steam load in the original low-pressure steam configuration strategy at different time periods is adjusted for multiple times, and a virtual low-pressure steam configuration strategy is generated for each adjustment; According to the running state of the low-pressure cylinder of the generator set under the steam load at different time periods, the thermal efficiency evaluation weight and the responsiveness evaluation weight are configured, and the original low-pressure steam configuration strategy and a plurality of virtual low-pressure steam configuration strategies are comprehensively evaluated based on the thermal efficiency evaluation weight and the responsiveness evaluation weight to obtain respective comprehensive evaluation values; The comprehensive evaluation values of the original low-pressure steam configuration strategy and the virtual low-pressure steam configuration strategies are compared in size, and the low-pressure steam configuration strategy with the maximum comprehensive evaluation value is determined as the current low-pressure steam configuration strategy; Based on the current low-pressure steam configuration strategy, the low-pressure cylinder of the generator set is driven to output.

2. The method of claim 1, wherein, The method for determining the corresponding power distribution demand in the preset generator set power distribution table based on the future power generation planning of the generator set comprises the following steps: Firstly, the future power generation planning of the generator set is analyzed and predicted; Secondly, according to the future power generation planning, the load change of each generator set is determined; Thirdly, in the preset generator set power distribution table, the corresponding power distribution demand is determined according to the load change.

3. The method of claim 2, wherein, The future power generation planning comprises: obtaining the power load prediction of different time periods according to the generator set scheduling and power grid operation control of different time periods.

4. The method of claim 1, wherein, The method for constructing the original low-pressure steam configuration strategy for the output state of the low-pressure cylinder of the generator set at different time periods based on the power distribution demand of the low-pressure cylinder of the generator set at different time nodes comprises the following steps: According to the historical power supply demand and historical low-pressure steam load data of the low-pressure cylinder of the generator set, a steam load model is established; According to the historical low-pressure steam configuration of the low-pressure cylinder of the generator set, a power supply model is established; The steam load model and the power supply model are associated according to the same time node to generate a historical low-pressure steam configuration judgment model; According to the historical low-pressure steam configuration judgment model, the current power distribution demand is analyzed to predict the steam load and low-pressure steam configuration of the low-pressure cylinder of the generator set at different time periods, and the original low-pressure steam configuration strategy is determined according to the prediction result.

5. The method of claim 1, wherein, The method for adjusting the steam load in the original low-pressure steam configuration strategy at different time periods for multiple times and generating a virtual low-pressure steam configuration strategy for each adjustment comprises the following steps: Determine the low-pressure steam configuration interval of the low-pressure cylinder of the generator set in the original low-pressure steam configuration strategy, divide the interval into multiple subintervals, adjust the multiple subintervals, and determine the average low-pressure steam configuration of each subinterval; According to the average low-pressure steam configuration of the multiple subintervals, a plurality of virtual low-pressure steam configuration strategies are generated.

6. The method of claim 1, wherein, The method for configuring the thermal efficiency evaluation weight according to the running state of the low-pressure cylinder of the generator set at different time periods under the steam load comprises the following steps: When configuring the thermal efficiency evaluation weight of the low-pressure cylinder of the unit, the output of the low-pressure cylinder of the unit under the steam load of different time periods is analyzed, and the corresponding steam supply amount of the low-pressure cylinder of the unit under different outputs is analyzed, and the thermal efficiency evaluation weight is configured based on the AHP hierarchical analysis method.

7. The method of claim 1, wherein, The method for configuring the thermal efficiency evaluation weight and the responsiveness evaluation weight according to the running state of the low-pressure cylinder of the unit under the steam load of different time periods comprises: When configuring the thermal efficiency evaluation weight of the output of the low-pressure cylinder of the unit, the output of the low-pressure cylinder of the unit under the steam load of different time periods is analyzed, and the steam supply amount under the steam load of different time periods is combined to configure the thermal efficiency evaluation weight; When configuring the responsiveness evaluation weight of the output of the low-pressure cylinder of the unit, the response speed from the start of steam supply to the output of the low-pressure cylinder of the unit is analyzed and the responsiveness evaluation weight is configured.

8. The method of claim 7, wherein, The expression for calculating the thermal efficiency evaluation weight is: E = (K1S1 + K2S2 + K3S3 +... + K n S n ) / (T1 + T2 + T3 +... + T n ) wherein K1 is a first thermal efficiency conversion weight, K2 is a second thermal efficiency conversion weight, K3 is a third thermal efficiency conversion weight, K n is an nth thermal efficiency conversion weight, S1 is the power generation amount under the steam load of the first period, S2 is the power generation amount under the steam load of the second period, S3 is the power generation amount under the steam load of the third period, S n is the power generation amount under the steam load of the nth period, T1 is the heat supply amount under the steam load of the first period, T2 is the heat supply amount under the steam load of the second period, T3 is the heat supply amount under the steam load of the third period, T n is the heat supply amount under the steam load of the nth period.

9. The method of claim 7, wherein, The method for configuring the responsiveness evaluation weight of the output of the low-pressure cylinder of the unit comprises: By simulating the running state of the output of the low-pressure cylinder of the unit, the response speed under the steam load of different time periods is analyzed, and the responsiveness evaluation weight is configured by combining the conversion coefficient, and the expression for calculating the responsiveness evaluation weight is: R = C1V1 + C2V2 +... + C n V n V1 is the response speed under the steam load of the first period, V2 is the response speed under the steam load of the second period, V n is the response speed under the steam load of the nth period, C1 is the response conversion coefficient under the steam load of the first period, C2 is the response conversion coefficient under the steam load of the second period, C n is the response conversion coefficient under the steam load of the nth period.

10. A system for predicting the output of a low-pressure cylinder of a gas turbine unit, characterized by comprises: The power distribution demand generation module is configured to determine the corresponding power distribution demand in the preset power distribution table of the generator unit based on the future power generation plan of the generator unit; The low-pressure steam configuration strategy construction module is configured to construct the original low-pressure steam configuration strategy according to the output state of the low-pressure cylinder of the unit at different time periods based on the power distribution demand of the low-pressure cylinder of the unit at different time nodes, and to adjust the steam load of different time periods in the original low-pressure steam configuration strategy multiple times, and to generate a virtual low-pressure steam configuration strategy for each adjustment; The comprehensive evaluation module is configured to configure the thermal efficiency evaluation weight and the responsiveness evaluation weight according to the running state of the low-pressure cylinder of the unit under the steam load of different time periods, and to perform comprehensive value evaluation on the original low-pressure steam configuration strategy and the plurality of virtual low-pressure steam configuration strategies based on the thermal efficiency evaluation weight and the responsiveness evaluation weight; The unit driving module is configured to drive the low-pressure cylinder of the unit to output according to the current low-pressure steam configuration strategy.

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