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    • 12. 发明公开
    • Method and apparatus for preventing surge in a dynamic compressor
    • 防止动态压缩机冲击的方法和装置
    • EP0500195A3
    • 1992-10-14
    • EP92201362.8
    • 1989-03-15
    • COMPRESSOR CONTROLS CORPORATION
    • Staroselsky, NaumReinke, Paul A.Mirsky, Saul
    • F04D27/02
    • F04D27/0284F04D27/001F04D27/0223
    • A method of anti-surge protection for a dynamic compressor (101) having inlet and discharge networks (103,105), an anti-surge valve (107) connecting said discharge and inlet networks (105,103) and an anti-surge control system (108-135) operating said anti-surge control valve (107) to maintain the gas flow rate through said compressor (101) above a surge limit below which said compressor (101) would surge, said surge limit being a function of several process variables, said method comprising :
         continuously measuring the suction pressure, suction temperature, discharge pressure and discharge temperature of said compressor, calculating (116) the temperature ratio by dividing the discharge temperature by the suction temperature, calculating (117) the pressure ratio by dividing the discharge pressure by the suction pressure, and calculating (118) the polytropic exponent of said compressor (101) by dividing the logarithm of said temperature ratio by the logarithm of said compression ratio;
         continuously calculating (120) the reduced polytropic head of said compressor by raising said compressor ratio to a power determined by said polytropic exponent, reducing the result by 1, and dividing the remainder by said polytropic exponent;
         continuously measuring the pressure drop across a flow rate measuring device, and calculating (121) the reduced volumetric flow in suction squared by dividing said pressure drop by said suction pressure;
         continuously calculating (122) said operating slope of the compressor as the ratio of said reduced polytropic head to said reduced volumetric feed rate squared;
         continuously calculating (123) said slope of the surge limit as a function of the measured or constant rotational speed and the measured or constant guide vane position of said compressor;
         continuously calculating (124) said relative operating slope as a ratio of said slope of said operating point to said slope of the surge limit;
         continuously calculating (125) the relative distance between the compressor operating point and the surge limit between the operating point and surge as a difference between a relative slope of surge being equal to one and the relative operating slope of the compressor's operating point; and
         continuously manipulating (128-131) the position of said anti-surge valve (107) by adjusting the output of said anti-surge control system to prevent said relative distance between the compressor operating point and the surge limit from decreasing below a predetermined margin of safety.
    • 13. 发明公开
    • Method and apparatus for preventing surge in a dynamic compressor
    • 用于防止动态压缩机中的喘振的方法和设备
    • EP0500196A2
    • 1992-08-26
    • EP92201363.6
    • 1989-03-15
    • COMPRESSOR CONTROLS CORPORATION
    • Staroselsky, NaumReinke, Paul A.Mirsky, Saul
    • F04D27/02
    • F04D27/0284F04D27/001F04D27/0223
    • A method of anti-surge protection for a dynamic compressor (101) having a corresponding compressor performance map and inlet and discharge networks (103,105), an anti-surge valve (107) connecting said discharge and inlet networks (105,103) and an anti-surge control system (108-135) operating said anti-surge control valve (107) to maintain the relative distance between the compressor operating point and the surge limit below which said compressor (101) would surge, said relative distance being a difference between the relative operating slope of the compressor and the relative slope of the surge limit, both of said relative slopes being ratios of the actual slopes to the slope of the surge limit line, both actual slopes being tangents of the angles between the operating point and the horizontal axis of the compressor performance map and the surge limit and the horizontal axis of the compressor performance map, said method comprising :
         continuously calculating said relative distance between the compressor operating point and the surge limit as a function of one or more measured process variables and adjusting the position of said anti-surge valve by a closed loop response of the control system to prevent said relative distance between the compressor operating point and the surge limit from decreasing below a minimum margin of safety, said minimum margin of safety including both constant and variable parts, and adding an open-loop response to the output of said anti-surge control system whenever the relative distance between the compressor operating point and the surge limit is below a preset level of danger because when said relative distance between the compressor operating point and the surge limit is located below said preset level of danger, the operating point may cross the surge limit line; and
         maintaining said open-loop response at zero under steadystate conditions, increasing said open-loop response by an amount proportional to the instantaneous rate at which said controlled variable is approaching said surge limit whenever the relative distance between the compressor operating point and the surge limit decreases below the preset level of danger, and at preset time intervals thereafter so long as said relative distance between the compressor operating point and the surge limit continues to be below said preset level of danger, and decreasing said open-loop response slowly toward zero whenever said relative distance between the operating point and the surge limit becomes higher than the preset level of danger.
    • 一种用于动态压缩机(101)的防浪涌保护方法,所述动态压缩机具有相应的压缩机性能图和入口和出口网络(103,105),连接所述出口和入口网络(105,103)的防喘振阀(107) (107)保持压缩机工作点和所述压缩机(101)将在其之下喘振的喘振极限之间的相对距离的喘振控制系统(108-135),所述相对距离是所述压缩机 压缩机的相对工作斜率和喘振极限的相对斜率,所述相对斜率均为实际斜率与喘振极限线斜率的比率,两个实际斜率均为工作点与水平面之间的角度的切线 所述方法包括:连续地计算所述相对距离,所述相对距离和所述压缩机性能图的横轴之间的相关性 根据一个或多个测量的过程变量确定压缩机工作点与喘振极限之间的距离,并通过控制系统的闭环响应来调节所述反喘振阀的位置,以防止压缩机工作点与 所述喘振极限从降低到最小安全裕度以下,所述最小安全裕度包括恒定部分和可变部分,并且每当所述压缩机工作点之间的相对距离与所述防喘振控制系统的输出增加开环响应时, 并且所述喘振极限低于预设的危险等级,因为当所述压缩机工作点与所述喘振极限之间的所述相对距离位于所述预设的危险等级以下时,所述工作点可能越过所述喘振极限线; 并且在稳定状态下将所述开环响应保持为零,每当所述压缩机工作点和所述喘振极限之间的相对距离增加时,将所述开环响应增加与所述受控变量接近所述喘振极限的瞬时速率成比例的量 降低到低于预先设定的危险等级,并且在此后的预设时间间隔内,只要所述压缩机工作点和喘振极限之间的所述相对距离继续低于所述预设的危险等级,并且每当任何时候将所述开环响应缓慢地减小到零 所述工作点与喘振极限之间的所述相对距离变得高于预设的危险等级。
    • 18. 发明公开
    • SYSTEMS AND METHODS TO CONTROL PERFORMANCE VIA CONTROL OF COMPRESSOR OLL PROTECTION ACTIONS
    • 用于通过控制压缩机OLL保护措施来控制性能的系统和方法
    • EP3309403A1
    • 2018-04-18
    • EP17195925.7
    • 2017-10-11
    • General Electric Company
    • MATHAI, George VargeseKLOSINSKI, Joseph PhilipEKANAYAKE, SanjiSCIPIO, Alston Ilford
    • F04D27/02F02C9/18F02C9/52F02C9/54
    • F02C9/52F02C9/18F02C9/54F04D27/0223F04D27/0246F04D27/0261F05D2270/3015H02K7/1823H02P9/04
    • Systems and methods to control performance via control of compressor operating limit line (OLL) protection actions are disclosed. According to an embodiment of the disclosure, a method (1100) of controlling a turbine (160) in a power plant (105) can be provided. The method (1100) may include receiving (1110) a selection of a desired performance parameter (190) associated with an operational mode (410) of a power plant (105); receiving (1120) a set of measured performance parameters at a current operating condition (195) of a turbine (160) associated with the power plant (105); receiving (1130) an operating limit line (OLL) (540) of a compressor (110) associated with the turbine (160); and receiving (1140) a compressor pressure ratio (CPR) at the current operating condition (530) of the turbine (160). The method (1100) may further include: comparing (1150) the CPR (530) to an operating limit pressure ratio on the OLL at the current operating condition of the turbine; based at least in part on the comparison, a difference between the CPR (530) and the operating limit pressure ratio exceeding a predetermined threshold can be determined (1160); and based at least in part on the difference between the CPR (530) and the operating limit pressure ratio, the selection of the desired performance parameter (190), and the set of measured performance parameters (195), one or more response actions (450) via a control system (180) of the turbine (160) can be implemented (1170).
    • 公开了通过控制压缩机操作限制线(OLL)保护动作来控制性能的系统和方法。 根据本公开的实施例,可以提供控制发电站(105)中的涡轮机(160)的方法(1100)。 该方法(1100)可以包括:接收(1110)与电厂(105)的操作模式(410)相关联的期望性能参数(190)的选择; 在与动力装置(105)相关联的涡轮机(160)的当前操作条件(195)下接收(1120)一组测量的性能参数; 接收(1130)与所述涡轮(160)相关联的压缩机(110)的操作限制线(OLL)(540); 和在涡轮机(160)的当前运行状态(530)下接收(1140)压缩机压力比(CPR)。 该方法(1100)可以进一步包括:在涡轮机的当前运行状况下,将CPR(530)与OLL上的运行极限压力比进行比较(1150); 至少部分基于该比较,可以确定CPR(530)与超过预定阈值的操作限制压力比之间的差(1160); 并且至少部分地基于CPR(530)和操作极限压力比之间的差异,选择期望的性能参数(190)和一组测量的性能参数(195),一个或多个响应动作( (160)的控制系统(180)可以实施(1170)。