本文论述了基于故障分量能量函数的超高速方向保护原理。
An Ultra High Speed Relay based on the energy function of the fault component is discussed in this paper.
方向元件是基于行波或暂态量的超高速方向保护的核心元件。
Directional unit is the kernel unit of the traveling waves or transients based ultra-high-speed directional protection for transmission line.
本文的方法解决了其它故障暂态量方向保护普遍存在的一些问题。
The method deseribed can solve some problems associated with other direction relay based on fault transient signals.
文章提出了基于检测行波电流波头极性的行波电流极性比较式方向保护。
A directional protection based on traveling wave current polarity comparison which is implemented by detecting the polarity of current wavefront of traveling wave is presented.
差动保护因TA的饱和造成保护误动,采用功率方向保护避免因TA饱和造成误动。
Differential protection's unwarranted trip is often caused by saturation of TA. Avoid it by directional power protection.
该方案包括了横差保护、故障分量负序功率方向保护和不完全纵差保护的综合应用。
The scheme includes the transverse differential protection, the directional relay action on negative sequence power of fault component and the incomplete differential protection.
分析表明,用这种方法构成的微机方向保护具有全线速动、可靠的特点,并且易于实现。
It has been pointed out that the microcomputer based directional protection using the proposed method has the properties of fast and reliable operation, and is easily realized.
为确保外部接线的正确性,在零序方向保护投入运行时,我们将进行大量的现场带电测试。
For ensuring correct wiring, a great of active tests on site should be done before the protection is put into operation.
对两种极化电压下的横联差动电流方向保护的选择元件在同杆并架双回线故障下的动作行为进行了研究。
This paper analyses selectors of transverse differential current direction protection using two types polarizing voltage for double circuit lines on the same tower.
讨论了纵联零序方向保护因为零序电压灵敏度不足而失效的各种情况,探讨了采用零序电压补偿措施的必要性。
Different conditions causing the sensitivity deficiency of pilot zero-sequence directional protection are analyzed and the necessity of adopting zero-sequence voltage compensation is discussed.
还有新式方向盘,其边缘具有减震功能在最严重的冲击中缓冲保护司机的头部。
There is also a new steering wheel with an energy-absorbing rim to cushion the driver's head in the worst impacts.
高哲铭说,中国通过推动开发和保护知识产权促进经济增长而迈向正确的方向,他对此很有信心。
Mr. Gal-Or says he's confident that China is moving in the right direction by promoting the development and protection of intellectual-property rights to spur growth.
3月29日,位于纽约的联邦地区法院作出了一项裁判,仅从表面上看,这项裁判掉转了美国基因专利保护的方向。
On March 29th a federal district court in New York made a ruling that, taken at face value, turns America's approach to the patent protection of genes on its head.
区域进步将会有助于确保亚洲继续朝着建立全球竞争力和提高生产率的方向前进,远离特殊利益集团的保护主义。
Regional progress will help to ensure that Asia keeps moving in the direction of global competitiveness and higher productivity, and away from protectionism for special interest groups.
由于在降落过程中很难判断受力的方向,更不用说受力的大小,因此保护者必须对每一种情况进行估量,并利用岩石取得最安全的位置。
Since it is not easy to judge the direction of force in a fall, much less the extent of force, the belayer must evaluate each situation and make use of the rock for the most secure position.
更有可能的是,在大选期间他将辩倒约翰·麦凯恩——坚定的自由贸易论者,却不是特别的能言善辩——从而把全球观点朝保护主义方向推进,令人郁闷。
More likely, during the general election he will out-argue John McCain, a stout but not especially articulate free-trader, and nudge global opinion in a depressingly protectionist direction.
而另一方面,环境保护主义者更是对奥巴马的决定进行轰炸,指出其努力方向是错误的。美国急需的是迅速转向无碳能源的开发。
Environmentalists, on the other hand, blasted Obama's announcement, saying it was a step in the wrong direction and that the United States needed a quicker transition to carbon-free sources of energy.
保护区位于岛的中央,向东、西、南三个方向伸展,其中西面延伸至海。
Protection zone is located in the center of the island and spreads to the other three directions, besides reaching the sea in the west.
巴西会在费尔南多·迪诺罗尼亚收集飞机残骸。这一地区人烟稀少,是位于巴西海岸东北方向的一个火山列岛同时也是自然保护区。
Brazil will gather aircraft debris on Fernando DE Noronha, a sparsely populated volcanic archipelago and nature reserve off its northeastern coast.
王象棋中主要的棋子,可以向任何方向移动一个方格,但必须保护它不被将死。
The principal chess piece, which can move one square in any direction and must be protected against checkmate.
用一对二级管以反向偏执于正常方向的形式连接至电源端,来保护过高的输入电压。
Protecting against excessive input voltages using a pair of diodes to power supply reversibly biased in normal direction.
她们会引导你的步伐向正确的方向前进,她们会安慰你支持你,日日夜夜保护你。
They'll guide your steps along the way, They'll comfort you and hold you, Protect you night and day.
该研究证实了两种化学物质可以在信号传导通路从两个不同的方向阻止群体感应,保护器官免受秀丽隐杆线虫感染。
The study identified two chemicals that could block quorum sensing at two distinct steps in the signaling pathway, protecting the model organism Caenorhabditis elegans from infection.
本项目体现了于2013年采取的对老蒙特利尔区的保护和加强的规划方向。
This project reflects the orientations of the Old Montreal Protection and Enhancement Plan, adopted by the Ville DE Montreal in 2013.
另外还需要进行变压器零序方向过电流保护动作方向正确性的检查。
The validity check of zero-sequence operating direction for transformer directional over-current protection is also essential.
该结构缺乏牙周膜组织,故应通过咬合设计控制种植义齿咬合力大小及方向对种植体加以保护。
Without the protection of periodontal membrane, we should pay more attention to the occlusion design, controlling the value and direction of occlusal force exerted on DE.
该结构缺乏牙周膜组织,故应通过咬合设计控制种植义齿咬合力大小及方向对种植体加以保护。
Without the protection of periodontal membrane, we should pay more attention to the occlusion design, controlling the value and direction of occlusal force exerted on DE.
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