电网

Temperature is the lowest temperature in which the capacitor can

最低温度是电容器可以接入电网的最低温度，最

The scheme takes the difference between USA grid and PRC grid into account, and can run above the rating parameter, and it would benefits for the J-TEXT operation on the rating parameters. The stator magnetic flux linkage vector oriented control method is defined for motor double-feed varying speed system, thereafter the ac converter scheme of 100MW motor-generator double-fed varying speed system is proposed.

针对中美电网之间的差异所导致的机组转速下降和储能不足等问题，设计了100MW脉冲发电机组的双馈调速系统初步方案，方案利用机组电动机转子为绕线式转子的特点，采用双馈调速的方法将机组转速提升至750rpm，以解决机组储能不足的问题。

Super-conducting Magnetic Energy Storage System is a product of the combination of the power electronics technology and superconductive technology.

超导储能系统是电力电子技术和超导电技术有机结合的产物，是灵活交流输电的理想元件之一，对改善现代电网的品质有重要价值。

As a rule, the mains frequency is imposed on the wind turbine.

原则上，主电网频率是强施于风机上的。

The problem depends on how producing enough electric power when low rotate speed, and how be its changeover mains frequency with best method.

难题取决于怎样在低转速时型成足够的电能，以及怎样用最好的办法把其转化为电网周率。

It's clearly a very useful tool when you're off the beaten track and has great potential in countries where mobile devices are becoming more prevalent but a reliable supply of mains power is still a big problem.

当你位于偏僻地带时，这种发电机会很有用。在移动设备越来越普及、但可靠的电网供电仍成问题的国家，这种设备的应用也具有巨大潜力。

Generator set will take over and supply power to the load within Max.15 seconds when the mains supply fail.

当主电网突发停电时，发电机组将在15秒钟内自动完成从发电机组起动到向负载送电。

In Relay Protection setting calculate and function manege,it is very helpful.

在继电保护整定计算和运行管理中做到概念清晰，心中有数，少走弯路，主动而不是被动地适应不断变化的电网要求，本文在此方面将对读者有所帮助。

The drawbacks of existing marginal distribution capacity costare analyzed.

分析了现有配电网边际容量成本的不足。

The result shows that, the Direct Power Supply Model is inexorable selection of the whole social and economic development and the Yangtze River Power Corporation development. It also assesses one proposed strategy and finds that the active participation in price competition for networking, may help display the obvious low cost advantage of the hydropower enterprise, and the strive for direct power supply may afford more opportunity for the low cost enterprise to touch some of the end users. This not only helps to break the monopolized (currently an actually single agent) power purchase system, but also creates a policy advantage which helps the local areas to directly use the local water resources to develop large industries (for adjusting the industrial structure, increasing employment and especially for the relocation of emigrants). It also helps to develop the regional economy. Besides, this strategy will also promote the cooperation with other related enterprises, and thus promote the development of a multiple-element industry. Because the Direct Power Supply Model can make the low cost hydropower firm master partly terminal customers, then it is a normous chance for the low cost hydropower firm.

研究结果表明，直供电商业经营模式是中国整个社会经济发展和长江电力公司企业发展的必然要求和选择，在理论和实践也是切实可行的；直供电商业模式不局限于定向"电力公司"——电网购电客户，也应可约定直接向大用户，这样可以使低成本的水电公司有机会掌握部分终端客户，这除了可以打破当前实质上的单一主体的垄断购电体制外，还可以为直接利用当地水能资源、发展大工业、调整产业结构、增加就业尤其是安置移民、进而创造相当的政策性优势，进而促进区域经济发展，同时，还将有利于促进本企业与有关企业合作，发展相关多元化产业；由于直供电商业经营模式可以让低成本的水电公司掌握部分终端客户，所以对低成本的水电公司是一个巨大的机遇。

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。