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But in practical operating, overvoltage caused by reignition of the vacuum switching device frequently appears, and it result in damage of the capacitor bank or the switchgear itself. Ensuring the switchgear against reignition and installing a protective device are two main approaches to avoid the phenomenon. In this paper, a study on overvoltage caused by reignition due to capacitor bank switching with the vacuum switching device and its preventive measures are carried out. The main work which has been done and researches are as follows: 1. The producing mechanism of overvoltage and its influence factor are analyzed. It is pointed out that single-phase reignition is the main reason for damage of the switchgear and two-phase reignition is the main reason for damage of the capacitor bank,so overvoltage of single-phase reignition and two-phase reignition are the emphases of prevention. 2. Analysis of the special working condition of the operating switch for capacitor bank is carried out. It indicates that the vacuum switching device is difficult to realize no-reignition under this operation condition, so it is more practical to adopt protection devices. 3. Analyses of protection effect of RC and MOA and their shortages are carried out. It shows that the two methods can only restrain effectively overvoltage caused by single-phase reignition, and they cannot protect the capacitor bank when reignition of two-phase occurs. 4. The operation principle of G-R damping device is analyzed and discussed emphatically.

本文针对真空开关投切电容器组时因重燃而产生的过电压及其防治措施进行了研究，所开展的主要工作和研究结果如下： 1、对过电压的产生机理及其影响因素进行了分析，指出单相重燃是导致开关设备损坏的主要原因，而两相重燃则是导致电容器组损坏的主要原因，因此单相重燃和两相重燃过电压是防护的重点； 2、对电容器组操作开关的特殊运行条件进行了分析，指出在这种运行条件真空开关难于实现不重燃，因此采用保护装置更具有现实意义； 3、对RC与MOA的保护效果和存在的不足进行了分析，指出这两种方法均只能有效抑制单相重燃过电压，而不能在发生两相重燃时保护电容器组； 4、重点对G-R阻尼装置的工作原理进行了分析和讨论，指出该装置接入后线路中将会出现两种频率的高频振荡，而电容器组上的过电压是由这两种振荡共同决定的； 5、根据对上述两种振荡的分析指出存在一个最佳电阻值使得过电压最低，并提出了电容器组电压和最佳电阻值的近似求解方法； 6、使用电气暂态分析软件MATLAB对G-R装置的保护效果进行了仿真计算，证实该装置确实可以有效抑制重燃时的电容器组过电压； 7、根据仿真与近似计算结果的偏差提出了近似计算的修正方法，经过修正后的过电压计算结果与仿真结果吻合较好； 8、对G-R装置中放电装置G与阻尼电阻R的要求进行了分析，指出采用编织电阻和真空间隙可能是最佳选择。

Most of tourists travelled US national park by driving, one reason is that US national parks are quite big and make touring by walking unrealistic. The second reason is that the US roads are commonly well built, normally there is a main road in the park and the major scenes distributed along the main road or branch roads.

大部分人游览美国国家公园都是开车游览的，一是因为美国国家公园都特别的大，步行是不现实的，二是美国的公路修得很好，公园通常有一条主路，而游览的景点都分布在主路或主路边的支路旁。

John Cena In case you forgot or fell off I'm still hot - knock your shell off My money stack fat plus I can't turn the swell off The franchise, doin big bid'ness, I live this It's automatic I win this - oh you hear those horns, you finished A soldier, and I stay under you fightin Plus I'm stormin on you chumps like I'm thunder and lightning Ain't no way you breakin me kid, I'm harder than nails Plus I keep it on lock, like I'm part of the jail I'm slaughterin stale, competition, I got the whole block wishin they could run with my division but they gone fishin -- with no bait, kid your boy hold weight I got my soul straight, I brush your mouth like Colgate In any weather I'm never better your boy's so hot you'll never catch me in the next man's sweater If they hate, let 'em hate, I drop ya whole clan Lay yo' ass DOWN for the three second TAN Yeah, uhh It's gon' be what it's gon' be Five pounds of courage buddy, bass tint pants with a gold T Uhh - it's a war dance and victory step A raw stance is a gift, when you insist it's my rep John Cena, Trademarc, y'all are so-so And talk about the bread you make but don't know the recipe for dough though Aimin guns in all your photos, that's a no-no When this pop, you'll liplock, your big talk's a blatant no-show See what happens when the ice age melt You see monetary status is not what matters, but it helps I rock a timepiece by Benny if any The same reason y'all could love me is the same reason y'all condemn me A man's measured by the way that he thinks Not clothing lines, ice links, leather and minks I spent 20 plus years seekin knowledge of self So for now Marc Predka's livin live for wealth

约翰Cena 如果你忘了或掉了我仍然热-敲你的shell关闭我的钱堆脂肪加上我不能把膨胀关闭此外，该公司的乐队大bid'ness ，我住这它的自动我赢了这一点-哦你听到那些喇叭，你完成一名士兵，我留你的领导下fightin 加上我stormin你chumps像我雷电不是没有办法你分手我的孩子，我比指甲加上我一直就锁，想我的一部分，监狱我slaughterin陈旧，竞争，我得到了整个块wishin 他们就可以与我司，但他们已经fishin --没有诱饵，孩子的体重男孩举行我得到了我的灵魂直，我刷你的嘴像高露洁在任何天气条件下我从来没有更好的男孩这么热你将永远不会赶上我在接下来的男子的毛衣如果他们的仇恨，让'时间的仇恨，我下拉亚整个家族躺在你'屁股下跌三秒谭是啊， uhh 这是坤'是它的坤'是 5磅的勇气好友，低音色彩裤与黄金 Uhh -这是一个战争舞蹈和胜利的一步原材料的立场是一个礼物，当你坚持这是我的代表约翰Cena ， Trademarc ，你们是马马虎虎谈论你的面包，但不知道的良方面团虽然爱民枪在您的所有照片，这是一个没有任何当此弹出，您liplock ，您的大Talk的公然没有出现看看会发生什么时，融化冰河时代你看到的货币地位没有什么问题，但它可以帮助余岩计时器的班尼如有由于同样的原因你们可以爱我是同样的原因你们谴责箱一个人的方式来衡量的，他认为没有衣物线，冰链，皮革和水貂我花了20余年seekin知识的自我因此，现在马克Predka的生存生活的财富完全直译过来的主要没看过这比赛没语感没法意译

The Vessel not to be ordered to nor bound to enter any ice - bound place or place where lights, lightships, marks and bouys are or are likely to be withdrawn by reason of ice on the Vessel's arrival or where there is risk that ordinarily the Vessel will not be able on account of ice to reach the place or to get out after having completed loading or to get out after having completed loading or discharging.

冰封 23.Ice 本船不得派往或进入冰封的地点，或本船到达之时，由于冰情，即将撤去或可能撤去灯塔，灯船，航标和浮标的地点，本船也不得派往或进入因冰情，有危险使本船不能顺利到达或在装卸完毕后不能驶出的地点，本船没有破冰航行的义务，但如需要，可尾随破冰船航行。

The instantaneous super pore water pressure produced by the pore water of the inner structure of asphalt pavement, under the action of the high speed wheel load, is an important reason that results in water damage of the pavement.

沥青路面结构内部的孔隙水在高速行车荷载的作用下造成的瞬时超孔隙水压力，是造成路面水损害的重要原因。

Also,we found that the daily average value of WUEe always higher than that of leaf level WUE,one reason maybe lie in that they can not be compared directly for using two kinds of different measurement methods,the other reason may be associated with the energy fluxes underestimate by EC technology.4.Simulation of winter wheat canopy CO_2 fluxes by a multiplayer two-leaf model.

将生态系统水平与叶片水平的水分利用效率日均值进行比较，前者较后者高，原因可能与研究时对不同尺度采用了不能直接可比的不同的测定方法有关，也可能与涡度相关技术对能量通量的低估有关。4。

A will so far as it exercises a power of appointment shall not be treated as improperly executed by reason only that its execution was not in accordance with any formal requirements contained in the instrument creating the power.

用以行使受益指定权的遗嘱，如仅因为其签立并不按照订立该权力的文书所载的形式上的规定，不得因此而被视为非正式签立。

It is for this reason that organized labor in the United States and other major home nations is against direct foreign investments by MNCs.

由此，美国和其他一些主要的东道国中的工会组织就非常反对跨国公司的直接对外投资活动。

Saying: We have detained thy brother Jonathan for the money that he owed in the king's account, by reason of the affairs which he had the management of.

「我们逮捕了你弟弟约纳堂，是因为他在所尽职务上，欠了国王的银子。

And this actually came to pass; for, as we have previously related, Macrinus murdered Antoninus; then, after he had been acclaimed emperor in the camp, together with his son, he gave the latter, who was called Diadumenianus, the name Antoninus, for the reason that an Antoninus was earnestly desired by the praetorian guard.

马克林努斯在与他的儿子来到军营接受众人欢呼称帝之后，他就给他的儿子狄阿杜门尼亚努斯赐名为安东尼努斯，因为禁卫军真切的渴望能有一个安东尼努斯被拥立。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷