1) valve-point effect
阀点效应
1.
Hybrid particle swarm optimization for economic dispatch with valve-point effect
计及阀点效应负荷经济分配的杂交粒子群算法
2.
The objective function of economic load dispatch (ELD) with valve-point effect possesses its own features such as nonlinear, nonconvex, discontinuous and unable to derive; furthermore, ELD is restricted by electric power balance and operation constraints, so it is very difficult to solve ELD by classic mathematical algorithm.
带阀点效应的经济负荷分配问题具有不连续、不可导、非凸、非线性的目标函数,同时还受到电力平衡和运行约束的制约,很难应用经典数学算法求解。
3.
To improve economy of power system via alloting load among the units of generating station,aimed at the valve-point effect of turboset,proposing a new versatile optimization called hybrid particle swarm optimization algorithm(HPSO) to solve the discontinuous,nonconvex,nonlinear constrained economic load dispatch(ELD)optimization problems.
为了在电厂机组间进行负荷经济分配,提高电力系统运行的经济性,针对汽轮机进汽阀突然开启时出现的拔丝现象即阀点效应,提出了采用改进的粒子群算法(HPSO)对火电机组负荷进行经济分配,并将遗传算法的交叉思想引入到PSO算法当中,使其避免局部最优。
2) valve point effect
阀点效应
1.
It has non-smooth and nonconvex characteristic when generation unit valve point effect is taken into account.
当计及机组阀点效应后,该问题更是呈现为不光滑、非凸特性。
2.
In the optimization model the constraints of up spinning reserve and down spinning reserve were introduced to deal with the influence of wind power forecast errors on dynamic economic dispatch,and valve point effect was considered in the objective function.
优化模型中引入了正、负旋转备用约束,以应对风电功率预测误差给系统调度带来的影响;在目标函数中计及了常规火电机组的阀点效应带来的能耗成本。
5) valve effect
阀效应
6) valve-point internal efficiency
阀点内效率
补充资料：溢流阀、顺序阀、减压阀的比较
溢流阀 | 减压阀 | 顺序阀 | ||
控制油路的特点 | 通过调整弹簧的压力控制进油路的压力，保证进口压力恒定，p2＝0 | 通过调整弹簧的压力控制出油口的压力，保证出口压力p2稳定 | 直控式－通过调定调压弹簧的压力控制进油路压力；夜控式－由单独油路控制压力 | |
出油口情况 | 出油口与油箱相连 | 出油口与减压回路相连 | 出油口与工作回路相连 | |
泄漏形式 | 内泄式 | 外泄式 | 内泄式 | |
进油口状态及压力值 | 常态 | 常闭（原始状态） | 常开（原始状态） | 常闭（原始状态） |
工作状态 | 进出油口相通，进油口压力为调整压力 | 进油口压力低于出油口压力，出油口压力稳定在调定值上 | 进出油口相通，进油口压力允许继续升高 | |
联接方式 | 并联 | 串联 | 实现顺序动作式串联作卸荷阀用时并联 | |
功用 | 定压、溢流或安全作用限压、稳压、保压 | 减压、稳压 | 不控制系统的压力，只利用系统的压力变化控制油路的通断 | |
进油腔压力p1控制阀芯移动 | 出油腔压力p2控制阀芯移动 | 进油腔压力p1控制阀芯移动 | ||
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条