查询词典 power grid

It's hopeful that the research is useful to the security and economy of the coming looped electromagnetically coupled power networks of 750 kV and EHV power grid in China.

该研究有望对我国750 kV和特高压电网发展过程中形成的电磁环网的安全、经济运行起到一定的指导作用。

The modified particle swarm optimization is utilized to solve the proposed reactive power optimization model; and combining with non–stationary multi-stage assignment penalty function, the reactive power optimization problem is transferred into a problem to solve extreme-value without constraints, thus the calculation accuracy and global convergence ability of MPSO are effectively improved, and power grid company can achieve maximal economic benefit by means of the proposed algorithm.

应用改进粒子群优化算法求解该无功优化模型，并结合动态调整罚函数法将无功优化问题转化成无约束求极值问题，从而有效地提高了改进粒子群优化算法的全局收敛能力和计算精度，使电网公司取得了最大经济效益。

The design and construction of sub-station of the power bureau is an integral part of this system engineering project; it consists of three components, data query, exception management and system management, mainly for the benefits of power dispatching and maintenance personnel of the Liaoning Power Grid.

电业局子站的设计与实现是该系统工程项目中的重要组成部分，主要面向辽宁省电网电力调度的管理与维护人员，包括数据查询、异常管理、系统管理三个组成部分。

The paper proposes main research contents and conclusion as that:(1)We can check the Xinjiang power grid susceptance to Kaidou drainage area steps class electric power station through the electric power and electricity quantity balance calculation, meanwhile we propose the corresponding construction schedule according to each hydroelectric stations expect before work progress.

论文的主要研究内容和成果如下：(1)通过电力电量平衡计算，校验新疆电网对开都河流域梯级电站的电能消化能力，同时根据各水电站的前期工作进度，提出相应输电工程的建设进度。

Type of permanent magnet bodies ZN73M vacuum circuit breaker for indoor installation, air-insulated, for the opening and closing of the different nature of the power load for the city network, rural power grid, power grids, such as mining and railroad construction and renovation projects, especially used in the current scope of operations and the frequent breaking of the short-circuit operation required a certain number of occasions.

ZN73M型永磁机构真空断路器为户内安装、空气绝缘，用于开合各种不同性质的电力负荷，适用于城网、农网、矿山及铁道等电网建设和改造工程中，尢其是用于在工作电流范围内频繁操作和对短路开断操作次数有一定要求的场合。

Moreover, inefficiency use of electrical power can lead to brownouts and blackouts during heat waves or other periods of high air conditioning usage due to overloading of the electric power system (commonly referred to as the electric power grid).

此外，低效率使用的电力，可导致brownouts和停电期间，热浪或其他时期高空调的使用是由于超载的电力系统中。

The author made a simulation model in Matlab/Simulink, and did simulation in several conditions such as no load, integrating with power grid, independently modulation of the active and reactive power and capture of the maximum wind power. The simulation results show that analysis is right and have very important guidance signification on experimental systems.

在此基础上，以Matlab/Simulink为工具，建立了系统仿真模型，进行了发电机空载运行、并网、有功、无功功率独立调节、最大风能捕获运行等工况的仿真研究，仿真结果证明理论分析正确，对系统的实验研究具有一定的理论指导意义。

With the rapid development of the electric power industry, the utilization of the continuously increased capacity of the generator units, the extraordinary large power grid, and the extra-high voltage transmission network etc., the operation and the management of power system is becoming more and more complex.

电力工业的飞速发展，单机容量的不断增加，电网规模的日益扩大，使得电力系统的运行和管理越来越复杂。

The simulating results indicated that the proposed wind power generation-flywheel system could supply steady output power, and could participate in the power grid frequency control.

结果表明，在飞轮辅助下，风力发电-飞轮系统可以按要求输出平稳的功率，并且可以像传统发电机组一样参与电网频率控制。

The authors analyze the operation characteristic of distance protection of transmission line connecting wind farm with power grid under the variation of parameters such as the amplitude ratio of electromotive force at both sides, the phase difference of electromotive force at both sides, equivalent impedance of sources, system frequency and so on; based on the real-time current and electromotive force at wind farm side as well as the information of wind power generators participating power generation, a method to adaptively set the operation boundary of distance protection by use of the information at wind farm side only is proposed.

文章分析了风电场和电网联络线的距离保护随电源电势幅值比、电势相位差、电源等效阻抗、系统频率等参数变化时的动作特性，并基于风电场侧的实时电流和电势与参与发电的发电机信息，提出了仅利用风电场侧信息量自适应整定保护动作边界的方法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。