查询词典 power grid

After flow and transient stability calculating of the 330kV grid, we got the over-load and hazard lines set. Then we gained the redundant network needed to be built according to the increasing power supply and load in 2010. Adopting regradation step-by-step algorithm by which we can improve the calculation efficiency , we compared the validity of every line, deleted lines with low validity until no redundant line is in the network. At last we got the target network framework adopting the improved ant colony algorithm. Flow distribution, construction investment assessment and target framework of Gansu long-term planning all be considered, from the viewpoint of to be economic and reliability the feasibility of the improved ant colony algorithm is discussed.

在对2006年该网架结构进行了潮流计算与暂态稳定计算分析后，得出了系统的过负荷与危险线路集，并针对2010年新增的电源和负荷点确定了冗余的待建网架，然后利用逐步倒推法比较各待选线路在系统中的有效性，逐步去除有效性低的线路，直到网络中没有冗余线路为止，以此来以提高优化算法的计算效率，最后利用改进后的蚁群算法确定优化后的目标网架结构，并从潮流分布、建设投资估算等方面与甘肃电网远期规划中确定的目标网架进行了比较，从可靠性和经济性角度论证了改进蚁群算法在网架优化中的可行性。

A stagewise control strategy for grid connection was proposed by applying the compensate controller to DFIG wind power generation system.T...

另外，将该补偿控制器应用到风力发电系统实际并网控制过程，提出一种交流励磁双馈电机分段并网控制策略。

Sesto San Giovanni, March 13, 2008 --ABB, the leading power and automation technology group, will contribute to a grid development plan being carried out by the Italian energy utility Terna.

Sesto San Giovanni3月13日消息——领先的电力和自动化技术集团ABB公司，帮助意大利能源电力Terna公司实施的一个电网发展计划。

The 220 kV substation power supply capability evaluation based on analysis of the supporting ability of 35 kV girds was applied to the grid pre-planning management information system,which enables pre-evaluation for the gird in planning to search for defects and make improvement.

电网的科学合理规划将对今后电网的安全稳定运行、保证用户供电的可靠性和系统运行的灵活性带来直接影响，在电网规划前期管理信息系统这一平台上，运用基于35 kV网架支援能力分析的220 kV变电站供电能力评估的方法，即可对规划中的电网进行预先评估，通过评估的结论，查找电网存在的不足以求持续改进。

The dynamical characteristics of a low voltage MicroGrid from grid-connected mode to islanded mode with different distributed generation configuration schemes are analyzed by using simulation method,and the corresponding changing laws of each DG's power,voltage and frequency of MicroGrid are obtained.

通过算例仿真研究了不同分布式电源配置方案下低压微网从并网模式向孤网模式转换的动态运行特性，获得了分布式电源的功率、微网电压和频率的变化规律。如果选择微型燃气轮机作为微网的功率支撑手段，在微网从并网向孤网过渡过程中，系统频率波动较大，且部分分布式电源有可能在低频保护动作下与电网隔离，不利于微网的稳定运行；增加储能设备后，储能设备对于微网的稳定运行可发挥重要的作用。

The existing grid, tweaked and smartened to make better use of its power stations, should be infrastructure enough.

现有的电网调整优化后，能提高使用发电站输出电能的使用效率。

The existing grid, tweaked and smartened to make better use of its power stations, should be infrastructure enough.

现有电网优化后，能提高使用发电站输出电能的使用效率。

The existing grid, tweaked and smartened to makebetter use of its power stations, should be infrastructure enough.

现有的电网经过改造和修饰，可以更好地利用电厂，并足以提供基础设施。

As power battery for electric vehicle,lead acid battery has many shortcomings such as low specific capacity,the poor ability of charge acceptance and low active material utilization efficiency;corrosion of grid,sulfating of negative electrode ,hydrogen and oxygen evolution reaction and other phenomena occur during over charge-discharge and cause the capacity loss or fade to the batteries.

作为电动车用电池，铅酸蓄电池仍然存在着比能量低、充电接受能力差、活性物质利用率低等缺点，板栅的腐蚀、负极硫酸盐化、析氢、析氧等现象会引起充放电过程中不必要的副反应，这将导致电池容量的损失及衰减。

Guiyang Bureau,EHV Power Transmission Company of China Southern Grid, Guiyang 530021,China.

中国南方电网超高压输电公司贵阳局，贵阳 550003；2。

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％。