the control system of grading light in airdrome that consists of constant-current modulator for light, setting-up transformer, isolating transformer and angle controller of grading light is introduced.

1、

this kind of high voltage generator can be connected directly to power system without transformer, it is a technical revolution in the history of electric machine.

这种超高压发电机直接可以不通过升压变压器，这是电机发展史上的一场技术革命。

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2、

the large-sized booster transformers have possessed an important position in power system, which has strict requirements for their performance and structure.

大型升压变压器在电力系统中占有重要的地位，对其性能、结构有严格的要求。

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3、

the powerformer generates hv/ ehv avoiding an ascending transformer and the energy generated by the powerformer is input the grid directly.

新型超高压发电机可以直接产生高电压，省去了升压变压器，可直接将电能输入电网。

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4、

the unit can be started with the breaker or switch opened using the generator step-up transformer as a source of off-site power.

机组可在断路器或负荷开关打开时，采用发电机升压变压器作为一种非本电厂电源来起动。

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5、

except the inherent design requirements, large gus-transformers need a lot of attention during the design phase because of various limitations.

大型发电机升压变压器除了一些固有的设计要求外，还由于有各种限制在设计中应特别关注。

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6、

design features of very large generator step-up transformers

大型发电机升压变压器的设计特点

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7、

high-voltage generator paralleled in electric power system without transformer

不用升压变压器直接并网的高压发电机

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8、

operation characteristic of large boost transformer and issues interested in model selection

大型升压变压器的运行特性及选型时应关注的问题

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9、

the design difficulties of the intermediate frequency transformer are introduced.

介绍了中频升压变压器的设计难点和设计过程。

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10、

analysis of abnormal hydrogen content in large generator step-up transformer oil

某大型发电机升压变压器油中氢气异常分析

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11、

analysis of technological factor for 240mva/ 220kv double-winding step-up transformer

240MVA/220kV双绕组升压变压器工艺系数分析

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12、

according to the approved preliminary design, a total of 27 sets of 840 mva/ 500 kv 3-phase double winding set-up transformer will be ordered.

按审查的初步设计方案，共需840MVA／500kV三相双卷升压变压器27台。

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13、

a kind of novel harmonic elimination ac voltage regulator is proposed. it is made up of a chopper type ac-ac buck converter and a series-compensation boost transformer to realize bi-direction voltage regulation of load terminal.

提出一种新型谐波消除交流电压调节器方案，采用斩波方式AC-AC降压变换器结合输出串联补偿升压变压器实现负载电压的双向调节。

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14、

powerformer, launched in 1998, is a high voltage synchronous machine that is suitable for direct connection to the high voltage network without any step-up transformer.

Powerformer是一种高压发电机，可以直接和高压母线直接连接而无需升压变压器进行升压。

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15、

a high precise and high voltage pulse generator made up of high-power igbt and pulse transformer is proposed.

介绍利用大功率绝缘栅极晶体管（IGBT）配合脉冲升压变压器组成的高精度高压脉冲电源。

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16、

powerformer incorporates the functions of the conventional generator and the step-up transformer into one unit, which represents the latest achievement in the power generation technology.

Powerformer是一种集成了传统发电机和升压变压器功能的新型高压发电机，是在发电技术领域取得的最新进展。

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17、

the 1000v adjustable pulsant direct current power source was designed based on the autotransformer and step-up transformer.

1000V可调脉动直流电源将自耦调压器与升压变压器相结合设计。

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18、

application of three extraction procedures to study phosphorus availability in long-term experiment

用三种浸提方法研究长期定位试验中土壤磷素有效性

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19、

a long term experiment on the effect of different fertilizers combined on bio-characters and yield of summer corn

不同肥料配比对夏玉米生物性状及产量影响的定位研究

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20、

change of soil organic matter contents under a long term experiment

长期施肥条件下土壤有机质变化特征研究

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