潮流

In the POPF model, wind farm is modeled by the probabilistic wind farm model considering the reactive power-slip characteristic, and the inequality constraints include not only the unit output constraints, the ratio constraints, the voltage constraints and the line current constraints but also the reactive compensation capacity constraints in wind farm and the system climbing capacity constraints per minute. By introducing the NCP function, the KKT conditions of POPF system are transformed equivalently. Based on the transformed nonsmooth nonlinear algebraic equations, the FOSMM is used to determine the POPF model expressed by the numerical characteristic of variables. The model includes nonsmooth functions, so it can be solved by a semismooth Newton-type method based on the subdifferential.

概率最优潮流模型中，风电场采用考虑无功功率—滑加热器差特性的风电概率模型，不等式约束中除了机组出力约束、有载调压变压器变比约束、电压约束和支路电流约束，也考虑了风电场无功补偿容量约束、系统的分钟级爬坡能力约束；使用非线性互补函数将概率最优潮流的KKT条件转化为一组包含有不光滑函数的非线性代数方程组，然后基于一次二阶矩法确定了以待求量的数字特征表示的POPF模型，由于该模型包含不光滑函数，因此采用基于次微分的半光滑牛顿型方加热器法求解。

On the basis of analyzing the current techniques for power flow calculations of distribution network,by improving the traditional forward and backward substitution method ,a calculation applied for the reliable distribution network is presented,which has practicability.

在分析现有配电网潮流计算方法的基础上，通过对传统的前推回代法加以改进，提出了一种适用于辐射配电网潮流计算方法，具有实用性。

The Ministry of Education explains that it is for closer to fashion, especially fashion of the West.

国家教育部解释说这是为了紧跟潮流，尤其是西方国家的潮流。

The tidal current is the unceasing change, so long as actually has own characteristic is the tidal current!

潮流是不断的变化的，其实只要有自己的特色就是潮流！

Turbine is the core component of power generation system extracting energy from tidal current.

潮流发电水轮机是海洋潮流能发电系统的核心组成部分。

The resource of tidal current energy in china is rich, so its development potentiality is promising.

海洋潮流能作为一种可再生能源成为国内外研究的热点，我国海洋潮流能储量丰富，其开发利用潜力巨大。

Unlike the conventional indirect method, it can directly implement the generator field and armature current limits accurately, thereby assuring power flow convergence and voltage collapse point identification during tracing the PV curve when generator limits constraints are considered. The critical limit constraint equation is introduced in the corrective stage of the continuation method as the additional equation to solve the limit induced bifurcation point accurately.

给出新的发电机电流极限约束的直接处理算法，解决了计及发电机电流约束时，潮流难于收敛和不易精确求出电压崩溃点的问题；对不易精确求得的极限诱导分岔点，通过在连续潮流法的校正步骤中将关键的极限约束方程作为附加方程来快速而精确地求解。

The formulation of power system transient stability preventive control based on optimal power flow is presents in this thesis, in which multicontingency is considered. The infinite dimensions nonlinear optimization problem in which differential-algebraic equations are existed is changing into finite dimensions difference-algebraic equations by implicit trapezoid method.

建立了基于最优潮流的电力系统暂态稳定预防控制模型，通过隐式梯形法将含有发电机动态微分-代数方程和暂态稳定约束的无限维优化问题转换成有限维的常规静态最优潮流问题。

She's a true trendsetter to whom stylists and editors look for direction.

她是真正的潮流引领者，许多造型师与编辑都从她身上寻找时尚潮流走向。

The main physical processes in the East China Sea include the Kuroshio and water flux of the Taiwan strait and Tsushima strait, the thermohaline structure and its seasonal variation by exchange of heat and water on sea surface and mixing of tide, as well as the tide and tidal current, and circulation and its seasonal variation.

黑潮及其台湾海峡、对马海峡的水体输送；通过海面热和水气交换以及潮流混合作用下的海水温、盐分布与结构的四季演替过程；潮流潮汐过程；环流的季节性变化等。

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。