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According to the experimental data, it can be seen that the current transformer this paper designed could work reliably. At the range of -40~70 oC, it can work steadily. Furthermore the ratio error and phase error of current transformer could satisfy the state criterion of 0.2 standard. Relative to the tradition electromagnetic current transformers the respond speed and bandwidth are increased greatly. As a result, it is hopeful that the electronic current transducer we designed is practical.

经试验验证，本课题设计的电子式电流互感器工作可靠，在-40~70 oC温度范围内均能稳定工作，而且其比差和相差都满足国标中对 0.2 级电流互感器的要求，其动态响应速度、带宽等性能明显比传统电磁式电流互感器有很大的改进，因此其有望很快进入实用化阶段。

The principle of the novel single-phase hybrid active power filter is described in detail. Based on the above analysis, Kalman filtering approach for estimation of harmonics is presented to improve the speed and precision of harmonic detection, and it also can avoid the influence made by voltage distortion on harmonic detection. A new current control strategy based on energy balance is presented to regulate the active part absorbing or releasing active power and control the inverter to produce current opposite to the harmonic current reflowing in injection branch, the above method combined with harmonic current tracking control that keeps the stabilization of dc-side voltage and improve the reliability of the system.

并详细分析了系统的滤波原理，提出了基于卡尔曼增益自调整的改进型动态谐波含量估计方法，能够快速准确的跟踪检测电网谐波电流，并且克服了电力机车等冲击性负荷引起的电网电压畸变对谐波检测精度的影响；提出了基于逆变器两侧能量平衡的电流控制方法使有源部分吸收或释放一定有功或无功功率及产生与注入支路回灌谐波电流相反的抑制电流，然后联合电网谐波电流跟踪控制以获得系统参考信号，保证了直流侧电压的稳定，提高了装置可靠性，增强了系统滤波性能。

At first the current sampling values pass through virtual digital CVTs. And then the voltage and current sampling values are processed by a low pass filter. According to the instantaneous value of transmission line voltage, the current instantaneous values of shunt reactors and P equivalent circuit capacitance can be calculated. After removing these two kinds of current, sampling value differential protection based on all components and fault component can be applied.

由线路电压瞬时值分别实时计算出流入并联电抗器和流入线路Π型等值电路两侧电容的电流瞬时值，再从线路每侧电流除去这两部分电流，用得到的新电流瞬时值作常规采样值差动和故障分量采样值差动保护计算。

Just as I had set my Mast and Sail, and the Boat began to stretch away, I saw even by the Clearness of the Water, some Alteration of the Current was near; for where the Current was so strong, the Water was foul; but perceiving the Water clear, I found the Current abate, and presently I found to the East, at about half a Mile, a Breach of the Sea upon some Rocks; these Rocks I found caus'd the Current to part again, and as the main Stress of it ran away more Southerly, leaving the Rocks to the North-East; so the other return'd by the Repulse of the Rocks, and made a strong Eddy, which run back again to the North-West, with a very sharp Stream.

我刚竖起桅杆张好帜，船就开始向前行驶了。我发现四周水色较清，知道那股急流在附近改变了方向。因为，水急水则浊，水缓水则清，我知道那股急流在这儿已成了强弩之末了。不久我果然发现，在半海里以外，海水打在一些礁石上，浪花四溅。那些礁石把这股急流分成两股，主要的一股继续流向南方，另一股被礁石挡回，形成一股强烈的回流，向西北流回来，水流湍急。

To solve the above problems, a novel resonance injection type hybrid active power filter is presented, it allows the energy exchange between the DC-side capacitor and grid, DC-side voltage will be stabilized after the proposed control method base on the regulation of reactive current is adapted. On the other hand, a new current control method is proposed which is based on the control of error between injection current and harmonic current compensated by passive power filter using recursive PI.

在此基础上结合提出的基于基波无功电流闭环调节的直流侧电压控制方法，保证了直流侧电压的稳定；提出了采用递推积分将无源滤波器作用后电网谐波电流与注入支路补偿电流进行闭环比较控制以获得参考电流的方法，减小了误差，提高了系统的控制精度。

SH . The purpose is to live firmly these periphery come loose an account, with etc mice storehouse account not evacuate, in order to make sure core is held dish account fund is successful evacuate, these hold dish of hand to be received at that time the mobile phone arrives one case centrally, can hold with the jotter of new hair only dish.

。目的是为了稳住这些外围散户账户，以及其他老鼠仓账户不撤出，以保证核心操盘的账户资金顺利撤出，当时这些操盘手都被收掉手机集中到一起，只能用新发的笔记本操盘。

C. Delete the Geof user account, create a new user account for Alix, and assign it the same permissions that Geof's account was assigned.

C。 删除Geof使用者帐户，为Alix建立新的使用者帐户并指派与Geof帐户相同的权限。

D. Disable the Geof user account, create a new user account for Alix, and assign it the same permissions that the Geof user account was assigned.

D。 停用Geof使用者帐户，为Alix建立新的使用者帐户并指派与Geof帐户相同的权限。

You are the administrator of a network supporting computers running Windows 2000 Professional. Geof, a user, is leaving the company and is being replaced by Alix. You want to deny access to the Geof user account and assign the Alix user account the same level of access that the Geof user account had. How can you accomplish these goals with minimum administration?

您是一名网路管理员，该网路支援执行 Windows 2000 Professional的电脑，使用者Geof将要离开公司，其位置由Alix取代，您要禁止Geof使用者帐户的存取，并指派给Alix使用者帐户与Geof使用者帐户同等级的存取，如何以最小的管理工作量来完成这些目标？

Two different death benefits are considered including the market value of the separate account at the annuitant's death; and the greater of the withdrawal account and the market value of the separate account mentioned above.

本文考虑两种不同的死亡给付：其一，为分离帐户在变额年金被保险人死亡时之剩余帐户价值；其二，为分离帐户在变额年金被保险人死亡时之剩余帐户价值与期初趸缴金额减去已提领总金额，两者之较大者。

But this is impossible, as long as it is engaging in a market economy, there are risks in any operation.

但是，这是不可能的，只要是搞市场经济，是有风险的任何行动。

We're on the same wavelength.

我们是同道中人。