为了解决南方某330 MW亚临界机组供热改造后一次调频性能较差,无法满足电网细则标准的问题,本文对其一次调频控制策略进行了全面、深入分析,从汽轮机阀门流量特性、汽轮机数字电液控制系统(digital electro-hydraulic control system,D...为了解决南方某330 MW亚临界机组供热改造后一次调频性能较差,无法满足电网细则标准的问题,本文对其一次调频控制策略进行了全面、深入分析,从汽轮机阀门流量特性、汽轮机数字电液控制系统(digital electro-hydraulic control system,DEH)侧调频函数、协调控制系统(coordinated control system,CCS)侧控制策略等影响一次调频调节品质的多个方面展开研究:通过汽轮机阀门流量试验,修正其流量特性函数;优化机组DEH侧和CCS侧一次调频控制回路结构和控制参数,完善机组一次调频功能。结果表明:机组一次调频动作正确率由86.4%提升至93.9%,动态调节准确性、快速性和稳定性显著改善,不同负荷工况下调频响应时间均低于3 s,15 s内调频质量均大于75%,过渡时间低于60 s,满足区域电网两个细则标准。该研究对火电机组供热改造后一次调频控制策略优化具有指导意义。展开更多
The real-time capability of integrated flight/propulsion optimal control （IFPOC） is studied. An appli- cation is proposed for IFPOC by combining the onboard hybrid aero-engine model with sequential quadratic pro- gr...The real-time capability of integrated flight/propulsion optimal control （IFPOC） is studied. An appli- cation is proposed for IFPOC by combining the onboard hybrid aero-engine model with sequential quadratic pro- gramming （SQP）. Firstly, a steady-state hybrid aero-engine model is designed in the whole flight envelope with a dramatic enhancement of real-time capability. Secondly, the aero-engine performance seeking control including the maximum thrust mode and the minimum fuel-consumption mode is performed by SQP. Finally, digital simu- lations for cruise and accelerating flight are carried out. Results show that the proposed method improves real- time capability considerably with satisfactory effectiveness of optimization.展开更多
文摘为了解决南方某330 MW亚临界机组供热改造后一次调频性能较差,无法满足电网细则标准的问题,本文对其一次调频控制策略进行了全面、深入分析,从汽轮机阀门流量特性、汽轮机数字电液控制系统(digital electro-hydraulic control system,DEH)侧调频函数、协调控制系统(coordinated control system,CCS)侧控制策略等影响一次调频调节品质的多个方面展开研究:通过汽轮机阀门流量试验,修正其流量特性函数;优化机组DEH侧和CCS侧一次调频控制回路结构和控制参数,完善机组一次调频功能。结果表明:机组一次调频动作正确率由86.4%提升至93.9%,动态调节准确性、快速性和稳定性显著改善,不同负荷工况下调频响应时间均低于3 s,15 s内调频质量均大于75%,过渡时间低于60 s,满足区域电网两个细则标准。该研究对火电机组供热改造后一次调频控制策略优化具有指导意义。
基金Supported by the Aeronautical Science Foundation of China(2010ZB52011)the Funding of Jiangsu Innovation Program for Graduate Education(CXLX11-0213)the Nanjing University of Aeronautics and Astronautics Research Funding(NS2010055)~~
文摘The real-time capability of integrated flight/propulsion optimal control （IFPOC） is studied. An appli- cation is proposed for IFPOC by combining the onboard hybrid aero-engine model with sequential quadratic pro- gramming （SQP）. Firstly, a steady-state hybrid aero-engine model is designed in the whole flight envelope with a dramatic enhancement of real-time capability. Secondly, the aero-engine performance seeking control including the maximum thrust mode and the minimum fuel-consumption mode is performed by SQP. Finally, digital simu- lations for cruise and accelerating flight are carried out. Results show that the proposed method improves real- time capability considerably with satisfactory effectiveness of optimization.
