CN112444396B - Turbine sliding pressure optimization method combining performance test and comprehensive variable working condition calculation - Google Patents
Turbine sliding pressure optimization method combining performance test and comprehensive variable working condition calculation Download PDFInfo
- Publication number
- CN112444396B CN112444396B CN202011255267.7A CN202011255267A CN112444396B CN 112444396 B CN112444396 B CN 112444396B CN 202011255267 A CN202011255267 A CN 202011255267A CN 112444396 B CN112444396 B CN 112444396B
- Authority
- CN
- China
- Prior art keywords
- steam
- pressure
- steam turbine
- efficiency
- working condition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Turbines (AREA)
Abstract
Description
技术领域technical field
本发明属于火电厂汽轮机运行领域，具体涉及一种性能试验与全面变工况计算相结合的汽轮机滑压优化方法。The invention belongs to the field of steam turbine operation in thermal power plants, and in particular relates to a steam turbine sliding pressure optimization method combining performance testing and comprehensive variable working condition calculation.
背景技术Background technique
汽轮机滑压优化主要是指主蒸汽压力优化，当主蒸汽压力变化时，机组循环热效率变化与相对内效率变化、给水泵耗功变化对机组经济性的影响是相反的，在同一负荷工况下，当主蒸汽压力降低时，机组的循环热效率会降低，但同时主汽调门开度增大、主汽调门节流损失减小、汽轮机相对内效率升高，而且给水泵耗功也相应降低。因此在同一负荷工况下，当主蒸汽压力变化导致的汽轮机相对内效率提高量与给水泵耗功的变化量之和同机组循环热效率降低量之差为最大值时，对应的主蒸汽压力即为该负荷下的最经济压力。为实现机组经济运行，需要对不同负荷工况下机组主蒸汽压力进行优化寻优，找到经济性最好的主蒸汽压力。Sliding pressure optimization of steam turbine mainly refers to the optimization of main steam pressure. When the main steam pressure changes, the changes in the cycle thermal efficiency of the unit are opposite to the changes in the relative internal efficiency and the power consumption of the feed pump on the economy of the unit. Under the same load condition, When the main steam pressure decreases, the cycle thermal efficiency of the unit will decrease, but at the same time, the opening of the main steam regulating valve will increase, the throttling loss of the main steam regulating valve will decrease, the relative internal efficiency of the steam turbine will increase, and the power consumption of the feed pump will also decrease accordingly. Therefore, under the same load condition, when the difference between the increase of the relative internal efficiency of the steam turbine caused by the change of the main steam pressure and the change of the power consumption of the feed pump and the reduction of the cycle thermal efficiency of the same unit is the maximum value, the corresponding main steam pressure is The most economical pressure under this load. In order to realize the economical operation of the unit, it is necessary to optimize the main steam pressure of the unit under different load conditions to find the most economical main steam pressure.
传统的滑压优化方法主要是通过性能试验进行比较分析，在同一负荷工况分别进行不同主蒸汽压力下的性能试验，测量并计算不同主蒸汽压力下汽轮机热耗率，并进行比较，寻找出汽轮机热耗率最低工况对应的主蒸汽压力即为最优主蒸汽压力。传统汽轮机性能试验方法的较大问题是性能试验存在较大的误差，根据汽轮机性能试验国家标准采用校验过的最准确的专用仪表并使用现有最好的测试方法，汽轮机热耗率试验结果的不确定度不大于0.3％(对应热耗值约21～24kJ/(kW·h))，然而现场实际性能试验时往往受测量条件限制以及机组自有的不明泄漏率等问题影响，性能试验误差往往达到约0.5％(对应热耗值约35～40kJ/(kW·h))甚至更高。在进行不同主蒸汽压力下汽轮机热耗率对比时，部分工况下两者的实际偏差约20kJ/(kW·h)，实际偏差已经小于了试验误差，这样就无法用性能试验的方法准确的找到最优主蒸汽压力。同时电厂生产管理人员往往还比较关注最优主蒸汽压力工况对应的热耗率与机组实际运行主蒸汽压力工况的偏差，传统性能试验方法也很难准确的得出两者的偏差值，既很难评估优化效果。The traditional sliding pressure optimization method is mainly to carry out comparative analysis through performance tests, respectively conduct performance tests under different main steam pressures under the same load condition, measure and calculate the heat consumption rate of steam turbines under different main steam pressures, and compare them to find out the The main steam pressure corresponding to the lowest working condition of the steam turbine heat consumption rate is the optimal main steam pressure. The big problem of the traditional steam turbine performance test method is that there is a large error in the performance test. According to the national standard for steam turbine performance test, the most accurate special instrument that has been calibrated and the best existing test method are used. The results of the steam turbine heat consumption rate test The uncertainty of the test is not more than 0.3% (corresponding to the heat consumption value of about 21-24kJ/(kW h)). However, the actual performance test on site is often affected by the limitation of measurement conditions and the unknown leakage rate of the unit itself. The performance test The error often reaches about 0.5% (corresponding to a heat consumption value of about 35-40kJ/(kW·h)) or even higher. When comparing the heat consumption rates of steam turbines under different main steam pressures, the actual deviation between the two is about 20kJ/(kW·h) under some working conditions, and the actual deviation is already smaller than the experimental error, so it is impossible to accurately measure the performance test method. Find the optimal main steam pressure. At the same time, the production managers of power plants often pay more attention to the deviation of the heat consumption rate corresponding to the optimal main steam pressure condition and the main steam pressure condition of the actual operation of the unit. It is difficult to evaluate optimization effects.
发明内容SUMMARY OF THE INVENTION
本发明的目的在提供性能试验与全面变工况计算相结合的汽轮机滑压优化方法，该方法能够准确的进行汽轮机滑压优化，寻找出各个负荷工况下最优主蒸汽压力，并准确的计算出优化效果。The purpose of the present invention is to provide a steam turbine sliding pressure optimization method combining performance test and comprehensive variable working condition calculation, which can accurately optimize the steam turbine sliding pressure, find out the optimal main steam pressure under each load condition, and accurately Calculate the optimization effect.
为达到上述目的，本发明采用的技术方案是：To achieve the above object, the technical scheme adopted in the present invention is:
性能试验与全面变工况计算相结合的汽轮机滑压优化方法，包括以下步骤：The steam turbine sliding pressure optimization method combining performance test and comprehensive variable working condition calculation includes the following steps:
1)在机组某一负荷工况下，选定某一主蒸汽压力为基准工况，进行汽轮机全面性热力性能试验，按照汽轮机性能试验方法，测量汽轮机及热力系统参数，计算汽轮机热耗率和高压缸效率、调节级效率、一段抽汽效率、给水泵驱动汽轮机进汽流量；1) Under a certain load condition of the unit, a certain main steam pressure is selected as the reference condition, and the comprehensive thermal performance test of the steam turbine is carried out. According to the steam turbine performance test method, the parameters of the steam turbine and thermal system are measured, and the heat consumption rate and Efficiency of high pressure cylinder, efficiency of regulation stage, steam extraction efficiency of the first stage, steam inlet flow of steam turbine driven by feed pump;
2)保持机组发电负荷不变，调整主蒸汽压力，分别测量并计算不同主蒸汽压力工况下主蒸汽压力、高压缸效率、调节级效率、一段抽汽效率和给水泵驱动汽轮机进汽流量，以汽轮机性能试验基准工况为基准，运用汽轮机全面变工况计算方法，将主蒸汽压力、高压缸效率、调节级效率、一段抽汽效率和给水泵驱动汽轮机进汽流量进行修正计算，得出不同主蒸汽压力工况对应的修正汽轮机热耗率；2) Keep the power generation load of the unit unchanged, adjust the main steam pressure, measure and calculate the main steam pressure, high-pressure cylinder efficiency, regulation stage efficiency, first-stage extraction efficiency and feed pump-driven steam turbine inlet steam flow under different main steam pressure conditions. Based on the benchmark working conditions of the steam turbine performance test, the main steam pressure, high-pressure cylinder efficiency, regulating stage efficiency, first-stage extraction steam efficiency, and feed water pump-driven steam turbine inlet steam flow are corrected and calculated by using the calculation method of the steam turbine comprehensively changing working conditions. Corrected steam turbine heat consumption rate corresponding to different main steam pressure conditions;
3)将步骤1)中的汽轮机热耗率与步骤2)中修正汽轮机热耗率比较，汽轮机热耗率最低工况为最优工况，对应主蒸汽压力为该负荷工况下的最优主蒸汽压力。3) Comparing the steam turbine heat consumption rate in step 1) with the corrected steam turbine heat consumption rate in step 2), the lowest working condition of the steam turbine heat consumption rate is the optimal working condition, and the corresponding main steam pressure is the optimal working condition under the load condition. main steam pressure.
本发明进一步的改进在于，某一主蒸汽压力为机组优化前实际运行设定压力。A further improvement of the present invention is that a certain main steam pressure is the set pressure in actual operation before the unit is optimized.
本发明进一步的改进在于，热力系统参数包括：各汽缸进排汽、各级抽汽、加热器进汽、加热器疏水、加热器进出水、给水泵进出水、凝结水泵进出水以及给水泵驱动汽轮机进排汽的压力、温度及流量。The further improvement of the present invention is that the parameters of the thermal system include: steam intake and exhaust of each cylinder, steam extraction at all levels, heater steam intake, heater drain, heater inlet and outlet water, feed water pump inlet and outlet water, condensate pump inlet and outlet water, and feed pump drive The pressure, temperature and flow of the steam in and out of the steam turbine.
本发明进一步的改进在于，步骤1)中还计算以下性能指标：中压缸效率、低压缸效率、各级抽汽口效率、中低压缸连通管压损、再热系统压损、各级抽汽压损以及各级加热器性能。A further improvement of the present invention is that in step 1), the following performance indicators are also calculated: efficiency of the medium-pressure cylinder, efficiency of the low-pressure cylinder, efficiency of the extraction ports at all levels, pressure loss of the connecting pipes of the medium and low-pressure cylinders, pressure loss of the reheating system, extraction of Steam pressure loss and heater performance at all levels.
本发明进一步的改进在于，步骤2)中，修正计算时，中压缸效率、低压缸效率、各级抽汽口效率、中低压缸连通管压损、再热系统压损、各级抽汽压损、各级加热器性能同基准工况保持不变。A further improvement of the present invention is that, in step 2), during the correction calculation, the efficiency of the medium-pressure cylinder, the efficiency of the low-pressure cylinder, the efficiency of the steam extraction ports at all levels, the pressure loss of the connecting pipes of the medium and low pressure cylinders, the pressure loss of the reheat system, the steam extraction at all levels The pressure loss and the performance of the heaters at all levels remain unchanged from the reference conditions.
本发明进一步的改进在于，步骤2)中，亚临界机组主蒸汽压力调整间隔为1MPa，超临界或超超机组主蒸汽压力调整间隔为1.5～2MPa。A further improvement of the present invention is that in step 2), the adjustment interval of the main steam pressure of the subcritical unit is 1 MPa, and the adjustment interval of the main steam pressure of the supercritical or ultra-super unit is 1.5-2 MPa.
本发明进一步的改进在于，汽轮机实际运行设计压力对应的汽轮机热耗率与最优工况汽轮机热耗率的差值，为优化节能量。The further improvement of the present invention lies in that the difference between the heat consumption rate of the steam turbine corresponding to the actual operating design pressure of the steam turbine and the heat consumption rate of the steam turbine under the optimal operating condition is optimized for energy saving.
与现有技术相比，本发明具有的有益效果：在同一负荷工况下汽轮机主蒸汽压力变化对机组热力系统影响的关键因素主要体现在主蒸汽压力变化、调节级效率变化、一段抽汽效率变化、高压缸效率变化以及给水泵耗功变化、给水泵驱动汽轮机进汽流量变化，此时汽轮机中压缸效率、低压缸效率、各级抽汽口效率、抽汽压损及其它主辅机性能基本不变，以某一主蒸汽压力工况性能试验为基准，将其它主蒸汽压力工况下对关键因素的影响用汽轮机全面变工况计算方法进行修正计算，可以得出不同主蒸汽压力工况下汽轮机热耗率，对比可找到最低汽轮机热耗率和最优主蒸汽压力。本发明可有效避免汽轮机性能试验误差对确定最优主蒸汽压力的影响，并可以准确的计算出不同主蒸汽压力下汽轮机热耗率偏差量，得出优化节能效果。本发明将传统汽轮机性能试验方法与汽轮机全面变工况计算方法相结合，全面变工况计算是以某一主蒸汽压力工况性能试验为基准，该基准工况受测量误差、机组不明泄漏率等影响其热耗率绝对值也存在相应的误差，但该误差并不影响不同主蒸汽压力工况下热耗率相比较时的相对偏差；在进行不同主蒸汽压力工况下关键因素修正计算时，主蒸汽压力、调节级效率、一段抽汽效率、高压缸效率、给水泵耗功虽然也受测量误差影响其准确性，但相比传统汽轮机性能试验，这几个关键因素涉及的测点非常少，而且优化对比修正后的汽轮机热耗均是受关键因素的相对变化的影响，可有效避免测量误差以及较多的不确定因素对汽轮机热耗的影响。Compared with the prior art, the present invention has the beneficial effects: under the same load condition, the key factors affecting the main steam pressure change of the steam turbine on the thermal system of the unit are mainly reflected in the main steam pressure change, the regulation stage efficiency change, and the first-stage extraction efficiency. change, the efficiency of the high-pressure cylinder, the power consumption of the feed pump, the change of the inlet steam flow of the steam turbine driven by the feed pump, the efficiency of the middle-pressure cylinder of the steam turbine, the efficiency of the low-pressure cylinder, the efficiency of the extraction ports at all levels, the steam extraction pressure loss and other main and auxiliary engines The performance is basically unchanged. Based on the performance test of a certain main steam pressure condition, the influence of other main steam pressure conditions on the key factors is corrected and calculated by the calculation method of the steam turbine comprehensively changing working conditions, and different main steam pressures can be obtained. The steam turbine heat consumption rate under working conditions can be compared to find the lowest steam turbine heat consumption rate and the optimal main steam pressure. The invention can effectively avoid the influence of the steam turbine performance test error on determining the optimal main steam pressure, and can accurately calculate the deviation of the steam turbine heat consumption rate under different main steam pressures to obtain the optimal energy saving effect. The invention combines the traditional steam turbine performance test method with the steam turbine comprehensive variable working condition calculation method. The comprehensive variable working condition calculation is based on the performance test of a certain main steam pressure working condition. There is also a corresponding error in the absolute value of the heat consumption rate, but the error does not affect the relative deviation of the heat consumption rate under different main steam pressure conditions. Correction calculation of key factors under different main steam pressure conditions Although the accuracy of main steam pressure, regulation stage efficiency, first-stage extraction steam efficiency, high-pressure cylinder efficiency, and feed pump power consumption are also affected by measurement errors, compared with traditional steam turbine performance tests, the measurement points involved in these key factors It is very small, and the heat consumption of the steam turbine after the optimization, comparison and correction is affected by the relative change of the key factors, which can effectively avoid the influence of measurement errors and many uncertain factors on the heat consumption of the steam turbine.
具体实施方式Detailed ways
下面对本发明进行详细说明。The present invention will be described in detail below.
汽轮机全面变工况计算主要是基于弗留格尔公式的变工况修正计算方法，可以分析计算出汽轮机热力系统某一参数变化对机组热力性能的影响，常用于汽轮机热力系统诊断分析、优化改造分析。The comprehensive variable working condition calculation of steam turbine is mainly based on the variable working condition correction calculation method based on the Freugel formula, which can analyze and calculate the influence of a certain parameter change of the steam turbine thermal system on the thermal performance of the unit. analyze.
在机组某一负荷工况下，选定某一主蒸汽压力(一般选机组优化前实际运行设定压力)为基准工况，进行汽轮机全面性热力性能试验，按照传统汽轮机性能试验方法，测量汽轮机及热力系统主要参数，包括各汽缸进排汽、各级抽汽、加热器进汽、加热器疏水、加热器进出水、给水泵进出水、凝结水泵进出水、给水泵驱动汽轮机进排汽等对应的压力、温度及流量，根据机组类型及现场测点安装情况部分测点可简化或省去。分析计算汽轮机热耗率和高压缸效率、调节级效率、一段抽汽效率、给水泵驱动汽轮机进汽流量以及其它主要性能指标(其它主要性能指标包括中压缸效率、低压缸效率、各级抽汽口效率、中低压缸连通管压损、再热系统压损、各级抽汽压损、各级加热器性能等参数)。Under a certain load condition of the unit, select a certain main steam pressure (generally the set pressure of the actual operation before the unit is optimized) as the reference condition, carry out the comprehensive thermal performance test of the steam turbine, and measure the steam turbine according to the traditional steam turbine performance test method. And the main parameters of the thermal system, including the steam intake and exhaust of each cylinder, the extraction steam at all levels, the heater steam inlet, the heater drain, the heater inlet and outlet water, the water inlet and outlet water of the feed pump, the inlet and outlet water of the condensate pump, the inlet and outlet steam of the steam turbine driven by the feed pump, etc. Corresponding pressure, temperature and flow, some measuring points can be simplified or omitted according to the type of unit and the installation situation of the measuring points on site. Analysis and calculation of steam turbine heat consumption rate and high-pressure cylinder efficiency, regulation stage efficiency, first-stage extraction steam efficiency, feed water pump-driven steam turbine inlet steam flow, and other main performance indicators (other main performance indicators include medium-pressure cylinder efficiency, low-pressure cylinder Steam port efficiency, pressure loss of medium and low pressure cylinder connecting pipes, pressure loss of reheat system, pressure loss of extraction steam at all levels, performance of heaters at all levels, etc.).
保持机组发电负荷不变，调整主蒸汽压力(亚临界机组主蒸汽压力调整间隔约1MPa，超(超)临界机组主蒸汽压力调整间隔约1.5～2MPa，结合调门配置方式、开启顺序和机组允许的压力调整范围确定调整次数)，分别测量并计算不同主蒸汽压力工况下主蒸汽压力、高压缸效率、调节级效率、一段抽汽效率和给水泵驱动汽轮机进汽流量，以汽轮机性能试验基准工况为基准，运用汽轮机全面变工况计算方法，将主蒸汽压力、高压缸效率、调节级效率、一段抽汽效率和给水泵驱动汽轮机进汽流量等关键因素进行修正计算，此时其它主要性能指标(其它主要性能指标包括中压缸效率、低压缸效率、各级抽汽口效率、中低压缸连通管压损、再热系统压损、各级抽汽压损、各级加热器性能等参数)认为同基准工况保持不变，得出不同主蒸汽压力工况对应的修正汽轮机热耗率。Keep the power generation load of the unit unchanged, adjust the main steam pressure (the adjustment interval of the main steam pressure of the subcritical unit is about 1MPa, and the adjustment interval of the main steam pressure of the super (super) critical unit is about 1.5 ~ 2MPa. The pressure adjustment range determines the adjustment times), respectively measuring and calculating the main steam pressure, high-pressure cylinder efficiency, regulating stage efficiency, first-stage extraction steam efficiency and feed pump-driven steam turbine inlet steam flow under different main steam pressure conditions. Using the steam turbine as the benchmark, the calculation method of comprehensively changing the working conditions of the steam turbine is used to correct and calculate the key factors such as the main steam pressure, the efficiency of the high-pressure cylinder, the efficiency of the regulating stage, the efficiency of the first-stage extraction steam, and the inlet steam flow of the steam turbine driven by the feed pump. Indicators (other main performance indicators include the efficiency of the medium pressure cylinder, the efficiency of the low pressure cylinder, the efficiency of the extraction ports at all levels, the pressure loss of the connecting pipe of the medium and low pressure cylinders, the pressure loss of the reheat system, the pressure loss of the extraction steam at all levels, the performance of the heaters at all levels, etc. The parameters) are considered to remain unchanged from the reference condition, and the corrected steam turbine heat consumption rate corresponding to different main steam pressure conditions is obtained.
本发明中主蒸汽压力的调整间隔仅供参考，实际是大一些、低一些都可以的，往往结合主汽调门配置方式初步定好最大值和最小值后根据调整次数确定间隔。The adjustment interval of the main steam pressure in the present invention is for reference only. In practice, it can be larger or lower. Usually, the maximum and minimum values are preliminarily determined in combination with the configuration of the main steam control valve, and then the interval is determined according to the number of adjustments.
将汽轮机性能试验基准工况得出的汽轮机热耗率同不同主蒸汽压力工况对应的修正汽轮机热耗率比较，汽轮机热耗率最低工况为最优工况，对应主蒸汽压力即为该负荷工况下的最优主蒸汽压力。汽轮机优化前实际运行设计压力对应的汽轮机热耗率与最优工况汽轮机热耗率的差值，即为优化节能量。Comparing the steam turbine heat consumption rate obtained from the reference condition of the steam turbine performance test with the corrected steam turbine heat consumption rate corresponding to different main steam pressure conditions, the lowest condition of the steam turbine heat consumption rate is the optimal condition, and the corresponding main steam pressure is the Optimum main steam pressure under load conditions. The difference between the heat consumption rate of the steam turbine corresponding to the actual operating design pressure before the steam turbine optimization and the heat consumption rate of the steam turbine under the optimal working condition is the optimal energy saving.
应用效果Apply effects
运用性能试验与全面变工况计算相结合的汽轮机滑压优化方法，解决了传统方法中汽轮机性能试验误差大无法准确寻找最优主蒸汽压力的问题，以及无法准确得出优化节能量的问题。本发明思路清晰，找到主蒸汽压力变化对机组热力性能影响的关键因素所在，既能准确的找到最优主蒸汽压力，也能准确的计算出优化节能量，且该方法实用性强、可操作性强。Using the steam turbine sliding pressure optimization method combining performance test and comprehensive variable working condition calculation, the traditional method solves the problem that the steam turbine performance test error is too large to accurately find the optimal main steam pressure, and the optimal energy saving problem cannot be accurately obtained. The invention has a clear idea, finds the key factors that affect the thermal performance of the unit by the change of the main steam pressure, not only can accurately find the optimal main steam pressure, but also can accurately calculate the optimal energy saving, and the method is highly practical and operable Strong sex.
实例分析Case Analysis
以某600MW超临界机组420MW负荷工况为例，正常运行时运行人员为减少主汽调门节流损失，将主汽调门开度设置较大、主汽压力较低，对该负荷工况进行调门优化分析。Taking a 420MW load condition of a 600MW supercritical unit as an example, in order to reduce the throttling loss of the main steam regulating valve during normal operation, the operator sets the opening of the main steam regulating valve to be larger and the main steam pressure is low, and adjust the valve for this load condition. Optimization Analysis.
在420MW负荷下电厂设定主汽压力为15.7MPa，以该工况为基准进行汽轮机全面热力性能试验，得出汽轮机热耗率为7796kJ/kWh，同时得出高压缸效率、调节级效率、一段抽汽效率、给水泵驱动汽轮机进汽流量以及其它缸效率、抽汽效率、抽汽压损、加热器性能等热力性能指标。Under the load of 420MW, the main steam pressure of the power plant is set to 15.7MPa, and the overall thermal performance test of the steam turbine is carried out based on this working condition, and the heat consumption rate of the steam turbine is 7796kJ/kWh. The extraction efficiency, the steam inlet flow of the steam turbine driven by the feed pump, and other thermal performance indicators such as cylinder efficiency, extraction efficiency, extraction pressure loss, and heater performance.
保持机组负荷为420MW基本不变，分别调整主蒸汽压力至16.8MPa、18.5MPa和19.7MPa，分别测量对应的高压缸效率、调节级效率、一段抽汽效率、给水泵驱动汽轮机进汽流量，其它性能指标同基准工况保持不变，运用全面性变工况计算方法，修正计算出主蒸汽压力、高压缸效率、调节级效率、一段抽汽效率和给水泵驱动汽轮机进汽流量变化对汽轮机热耗率的影响，得到对应的汽轮机热耗率分别为7800kJ/kWh、7784kJ/kWh和7766kJ/kWh，最低汽轮机热耗率为7766kJ/kWh，对应最优主蒸汽压力为19.7MPa，优化后较当前运行方式节能量为降低汽轮机热耗率30kJ/kWh。Keep the unit load at 420MW basically unchanged, adjust the main steam pressure to 16.8MPa, 18.5MPa and 19.7MPa respectively, measure the corresponding high pressure cylinder efficiency, regulating stage efficiency, first-stage steam extraction efficiency, feed pump-driven steam turbine inlet steam flow, other The performance index remains the same as the reference working condition, and the comprehensive calculation method of variable working conditions is used to correct and calculate the main steam pressure, high-pressure cylinder efficiency, regulating stage efficiency, first-stage extraction steam efficiency and the change of the inlet steam flow rate of the steam turbine driven by the feed pump. The corresponding steam turbine heat consumption rate is 7800kJ/kWh, 7784kJ/kWh and 7766kJ/kWh, the lowest steam turbine heat consumption rate is 7766kJ/kWh, and the corresponding optimal main steam pressure is 19.7MPa. The energy saving in the operation mode is to reduce the heat consumption rate of the steam turbine by 30kJ/kWh.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011255267.7A CN112444396B (en) | 2020-11-11 | 2020-11-11 | Turbine sliding pressure optimization method combining performance test and comprehensive variable working condition calculation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011255267.7A CN112444396B (en) | 2020-11-11 | 2020-11-11 | Turbine sliding pressure optimization method combining performance test and comprehensive variable working condition calculation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112444396A CN112444396A (en) | 2021-03-05 |
| CN112444396B true CN112444396B (en) | 2022-08-23 |
Family
ID=74735751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011255267.7A Active CN112444396B (en) | 2020-11-11 | 2020-11-11 | Turbine sliding pressure optimization method combining performance test and comprehensive variable working condition calculation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112444396B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113204847B (en) * | 2021-05-11 | 2022-10-18 | 三门核电有限公司 | Comparison method for nuclear turbine performance test |
| CN114239218B (en) * | 2021-11-09 | 2023-02-28 | 中国大唐集团科学技术研究院有限公司中南电力试验研究院 | Optimization calculation method for main steam pressure of steam turbine set under variable working conditions |
| CN114911158B (en) * | 2022-04-22 | 2025-02-21 | 苏州西热节能环保技术有限公司 | Steam turbine unit sliding pressure optimization method, device, equipment, and storage medium |
| CN114943127B (en) * | 2022-06-28 | 2023-07-11 | 西安热工研究院有限公司 | A Calculation Method for Correcting the Sequential Valve State of Steam Turbine to the Single Valve State |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53104005A (en) * | 1977-02-21 | 1978-09-09 | Hitachi Ltd | Co-operating pressure varying operation system for boiler-turbine |
| CN103513640A (en) * | 2013-10-11 | 2014-01-15 | 国家电网公司 | Integral optimization method and system for automatic power generation system of coal-fired unit |
| CN103850726A (en) * | 2014-03-28 | 2014-06-11 | 苏州华瑞能泰发电技术有限公司 | Method for quickly determining stationary sliding pressing optimization curve of steam turbine |
| CN105201564A (en) * | 2015-08-26 | 2015-12-30 | 国网河南省电力公司电力科学研究院 | Main-steam-flow-based steam turbine sliding pressure optimization control method |
| CN109086551A (en) * | 2018-08-28 | 2018-12-25 | 黑龙江苑博信息技术有限公司 | A kind of turbine optimal sliding pressure curve acquisition method suitable for air Cooling and heat supply unit variable working condition |
| CN109299582A (en) * | 2018-12-03 | 2019-02-01 | 黑龙江苑博信息技术有限公司 | Optimization method of steam turbine sliding pressure curve based on multi-dimensional sorting of unit operation big data |
| CN110222358A (en) * | 2019-04-16 | 2019-09-10 | 华电电力科学研究院有限公司 | For the modified numerical computation method of different load tubine heat consumption rate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8903753B2 (en) * | 2012-02-06 | 2014-12-02 | General Electric Company | Steam turbine performance testing |
-
2020
- 2020-11-11 CN CN202011255267.7A patent/CN112444396B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53104005A (en) * | 1977-02-21 | 1978-09-09 | Hitachi Ltd | Co-operating pressure varying operation system for boiler-turbine |
| CN103513640A (en) * | 2013-10-11 | 2014-01-15 | 国家电网公司 | Integral optimization method and system for automatic power generation system of coal-fired unit |
| CN103850726A (en) * | 2014-03-28 | 2014-06-11 | 苏州华瑞能泰发电技术有限公司 | Method for quickly determining stationary sliding pressing optimization curve of steam turbine |
| CN105201564A (en) * | 2015-08-26 | 2015-12-30 | 国网河南省电力公司电力科学研究院 | Main-steam-flow-based steam turbine sliding pressure optimization control method |
| CN109086551A (en) * | 2018-08-28 | 2018-12-25 | 黑龙江苑博信息技术有限公司 | A kind of turbine optimal sliding pressure curve acquisition method suitable for air Cooling and heat supply unit variable working condition |
| CN109299582A (en) * | 2018-12-03 | 2019-02-01 | 黑龙江苑博信息技术有限公司 | Optimization method of steam turbine sliding pressure curve based on multi-dimensional sorting of unit operation big data |
| CN110222358A (en) * | 2019-04-16 | 2019-09-10 | 华电电力科学研究院有限公司 | For the modified numerical computation method of different load tubine heat consumption rate |
Non-Patent Citations (2)
| Title |
|---|
| 热电联产机组抽汽供热期的汽轮机滑压运行优化方法;万杰等;《节能技术》;20150131;第33卷(第1期);第33-37、42页 * |
| 超(超)临界汽轮机组滑压运行优化试验;施延洲等;《热力发电》;20131231;第42卷(第12期);第8-12页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112444396A (en) | 2021-03-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112444396B (en) | Turbine sliding pressure optimization method combining performance test and comprehensive variable working condition calculation | |
| CN100437015C (en) | On-line monitoring method for variation of through-flow gap of steam turbine | |
| CN105201564B (en) | Main-steam-flow-based steam turbine sliding pressure optimization control method | |
| CN103646176B (en) | The comprehensive calculation method of energy-saving effect after turbine steam seal transformation | |
| CN103850726B (en) | Method for quickly determining stationary sliding pressing optimization curve of steam turbine | |
| CN113719325B (en) | Improved method for variable back pressure characteristic test of steam turbine | |
| CN102967464A (en) | Method for evaluating performances of condensing steam turbine after high back pressure improvement | |
| CN114239218B (en) | Optimization calculation method for main steam pressure of steam turbine set under variable working conditions | |
| CN104481598B (en) | A kind of online optimization of sliding pressure method of steam turbine of thermal power plant | |
| CN107201921B (en) | Steam turbine heat consumption rate online monitoring system and measuring method | |
| CN111352400B (en) | Heat supply unit sliding pressure operation optimization method and sliding pressure operation control system | |
| CN106401660B (en) | A kind of steam turbine optimization of sliding pressure control method based on hypersurface | |
| CN107368680A (en) | A kind of steam turbine optimum vacuum real-time computing technique | |
| CN111079302A (en) | A low-pressure cylinder efficiency measurement system and method | |
| JP2002122005A (en) | Thermal efficiency diagnostic method and device for thermal power plant | |
| CN112145244B (en) | System and method for improving water supply temperature and steam supply capacity of coal-fired power generating unit | |
| CN112127957B (en) | Method for measuring main steam flow of steam turbine of thermal power plant | |
| CN113486472A (en) | Method for calculating influence quantity of steam turbine cylinder efficiency on heat rate | |
| CN110853785B (en) | A fault analysis method for output capacity of nuclear voltage water reactor units | |
| CN113606001B (en) | 600MW supercritical unit bypass system and bypass temperature control method thereof | |
| CN111581787B (en) | Method and system for screening heat rate analysis data of steam turbine in real time | |
| CN113158444B (en) | Correction calculation method for influence of low-temperature economizer operation on steam turbine heat consumption | |
| CN114837810A (en) | Method and system for controlling and improving efficiency of wide-load operation of gas-steam combined cycle peak shaving unit | |
| CN115017716B (en) | Turbine part load performance assessment test method | |
| CN113566186B (en) | Boiler drum water level adjusting method after damaged stage pressure measuring points |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |