特高压

Research of test circuit for UHV circuit breaker s is important for the development of UHV transmission technology.

特高压断路器试验方法的研究是特高压输电工程发展的基础。

Due to its large structural size,long crossarm and heavy weight of components, the construction of tower assembling and erection for 1000kV AC power transmission becomes more difficult.

kV特高压输电线路铁塔结构尺寸大、横担长、部件大，使得特高压线路组塔施工难度加大。

During construction of our country's ultra-high voltage power grid, both electromagnetic loop circuit and stressed long UHV transmission passage may lead to low frequency power oscillation.

在我国特高压电网建设过程中，高低压电磁环网和重载的长距离特高压送电通道，都可能导致电网发生低频功率振荡。

At present, ultra-high voltage test hall, the ultra-high voltage insulator arrester and tension is building laboratories, can simulate high altitude and filthy, Icing, artificial rainfall, and other special environmental conditions in UHV filthy and Environmental Laboratory has also started construction, UHV test transformer is already in place.

目前，特高压试验大厅、特高压避雷器和绝缘子试验室正紧张建设，可模拟高海拔、污秽、覆冰、人工降雨等特殊环境条件的特高压污秽及环境试验室也已动工建设，特高压试验变压器已经就位。

At present, ultra-high voltage test Hall Voltage Sensor , the ultra-high voltage insulator arrester and tension is building laboratories, can simulate high altitude and filthy, Icing, artificial rainfall, and other special environmental conditions in UHV filthy and Environmental Laboratory has also started construction, UHV test transformer is already in place.

目前，特高压试验大厅、特高压避雷器和绝缘子试验室正紧张建设，可模拟高海拔、污秽、覆冰、人工降雨等特殊环境条件的特高压污秽及环境试验室也已动工建设，特高压试验变压器已经就位。

The influence of lightning, UHV bundle conductor configuration and high operating voltage were considered in the model.

考虑到雷电背景、特高压线路的多分裂导线结构和高运行电压，建立分析特高压线路分裂导线表面连续上行先导起始的数值仿真模型。

On the basis of drawing on the technology and experiences of tower assembling and erection for 500kV and 750kV transmission lines in China, such methods suitable to the tower assembling for UHV transmission line as inside suspension pole with outside pulling wires, ground rocker pole and tower crane are adopted and applied in UHVAC test and pilot project, pursuantly the task of tower assembling and erection in this project is completed, from this a lot of practical experiences are achieved and can be available for reference to subsequent engineering and construction..

文章在借鉴我国500 kV和750 kV架空输电线路组塔施工技术和经验的基础上，提出了内悬浮外拉线抱杆组塔、落地摇臂抱杆组塔、塔式起重机组塔等适合于特高压线路铁塔组立的方法。该方法已在特高压交流试验示范工程中得到应用，为后续工程建设提供了技术储备。

In order to study the overvoltage caused by monopolar grounding fault under bipolar mode in Ultra High Voltage DCsystem,the paper analyzes the monopolar grounding fault by use of phase-modal transformation method.

为研究双极运行的特高压直流输电系统中单极接地故障过电压，采用相模变换法分析了双极运行的特高压直流输电系统单极接地故障。

The impacts of the ultra high voltage AC/DC grid on Fujian power grid are analyzed in this paper. The security and stability of Fujian power grid and the interactions among the AC and DC system are studied under the single/double faults of EHV AC transmission lines and monopolar/bipolar block faults of EHVDC system near converter station.

中文摘要：分析了交、直流特高压电网对福建电网安全稳定的影响，研究了特高压交流电网、特高压直流系统发生故障时福建电网的安全稳定性以及受端换流站附近交流电网单一或严重故障对直流系统的影响及系统安全稳定水平。

This paper, based on above analysis and research, suggests the insulation level of the main equipment in UHV system (including transformer, circuit breaker, disconnecting switch, reactor and MOA), which can be used as a references to research, manufacture of UHV equipment and design of power substation and transmission line.

在此基础上，对特高压系统的主要变电设备(包括变压器、断路器、隔离开关、电抗器和MOA)和输电线路的绝缘水平提出了建议，以供我国特高压设备研制和线路变电所设计参考。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。