潮流

I contact bran-new content,first of all I have to comprehend the principles of all procedures and the action of each variable in them,then find out the distinct manners of reserving variables between the flow procedure and the static stability procedures. It is the most difficult to authorize a connective procedure between the two procedures and link and debug the whole procedures.

我接触的是全新的内容，首先必须理解 QR 算法和各程序的原理及各程序中变量的意义，找出潮流程序和静态稳定程序存储变量的异同，编写潮流程序和静态稳定程序之间的接口程序以及连接、调试所有的程序是本毕业设计的难中之最。

The main idea behind these methods is to take advantage of the known state variables and the theorem of addition for linear system without building up a new Jacobian matrix again. But the equivalent computation of algebraic equation must be performed to get state variables corrections. Accordingly, the speed required to model the contingencies is not fast enough to meet the demand of fast contingency analysis under emergency condition, which is proved by several well-known blackouts caused by flow transferring.

但是，这些算法中的大多数是在实时潮流计算的基础上，利用其中间结果和线性系统的叠加原理，直接求解出事故后的状态变量，都需要通过网络方程求解整个网络状态变量的增量，计算量较大，难于满足紧急状态下快速安全性评估的实时性要求，国内外一系列因静态潮流问题引起的大停电事故就是例证。

This program is the trend of the admittance matrix of the calculation procedure is part of the trend calculation.

详细说明：此程序为潮流计算中的导纳矩阵程序，是潮流计算中的一部分。

Then, the sequence voltages of the slack bus is replaced, and finding the positive sequence power flow several times until convergence comes off. Compared with the three-phase Newton-Raphson method, the Jacobian matrix with the proposed algorithm is of much lower order. The computation of finding the negative sequence component from the coupling power is only division arithmetic.

本文算法中修正方程式的雅可比矩阵阶数同单相潮流算法相同，是传统三相潮流算法的1/3，而通过耦合功率求解负序分量的计算，仅仅是简单的除法运算，计算量远远小于高阶矩阵的处理，因而总体上，与传统方法相比，大大降低了计算量。

Further more, by using the "current forward and voltage backward updating" power flow solution for distribution networks, the convergent speed of power flow is accelerated and the restoration plan can be fast gotten.

并且结合电流前推/电压回代法计算配网潮流，大大加速了潮流计算的收敛速度，能快速得到候选恢复方案集。

The Brazil Current extends S to the latitude of Rio de la Plata where interaction with the N-flowing cold Falkland Current occurs.

The巴西潮流传播S到与N流动的冷的福克兰潮流的互作用发生Rio de la Plata的纬度。

Approaching the Brazil coast near Recife the current diverges, the N part continuing WNW towards the Caribbean Sea (see 2.15) and the S part turning S as the warm Brazil Current.

Approaching在Recife附近的巴西海岸潮流分流， N零件继续往加勒比海的WNW (参见2.15)和转动S的S零件作为温暖的巴西潮流。

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本公司自设开发打样板房，以其先进的设计理念，结合时尚潮流，开发出一系列时尚、个性、优雅的现代主义系列产品，有真皮手工编织带、服饰腰带、宠物带、手腕带、男装带、女装带、童装带、帆布带、皮饰品等高、中档皮件制品，各种产品款式新颖独特，风格典雅时尚，做工精细优良，畅销于欧美、东南亚、中东、日本、西班牙等市场，领导着新潮、时尚、前卫的潮流。。。。。。

On the base of theory studying, aim at power flow calculation, the paper firstly develops a component library of transmiting and transforming electricity and a component of power flow calculation using CORBA, designs a visual flow calculation simulation software which finish the mostly work of modeling and simulation by calling for encapsuled components.

在理论研究的基础上，针对电力系统中最基本的计算——潮流计算，本文首先利用CORBA技术开发了输变电系统构件库和潮流计算算法构件库，然后开发了一个可视化的潮流计算仿真软件。

The rotation,form drag due to local topographic inhomogeneities,and weak but appreciablestratification are suggested to be possible sources for this discrepancy.The clas-sical wall-layer parameterization of the turbulent dissipation rate is found to holdwell for reversing flows,while modifications are needed for rotating flows.

分析表明，潮流的旋转、由局地地形造成的型阻以及水体的弱层化可能是上述差异产生的原因；3、经典的壁湍流理论以及湍封闭模型中经常采用的湍动能与其耗散率间的关系对于弱层化的往复型潮流是成立的，而在旋转型潮流中，壁湍流理论需要进行修正。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。