After the storage of the Three Gorges Reservoir,the landslide body will be subjected to bigger groundwater pressure,and especially,under the circumstance of sudden lowering of water level,dynamic water pressure wi.

After the storage of the Three Gorges reservoir,the landslide body will encounter bigger groundwater pressure,especially under the circumstance of the sudden lowering of water level,dynamic hydraulic pressure will be induced in the landslide body,which is very bad to the st.

Charactristc Analysis and Reliability Evaluation of Voltage Sag in Distribution System;

For the concurrence of harmonic and voltage sag,by WVD and its refinement algorithm,the parameters of harmonics will be estimated accurately and the beginning and lasting time.

How to reduce disturbance of sensitive electric power consumer caused by voltage sag has become a problem urgent to be solved,dynamic voltage restorer is one of the effective measures to resolve this power quality problem.

Voltage sags, one of the modern Power Quality(PQ)issues, may cause tremendous economic loss, which needs scientific method to evaluate.

The impact degree and sequent of voltage sags (dips) on industry sensitive customers in Quanzhou area are investigated.

A method of load-off in the distribution network taking into voltage sags is presented.

Stability analyses of slope under reservoir water level drawdown;

Research on the concrete face slab temperature stress and the protective measures under the condition of temperature sudden drop;

Through the investigation of influence of voltage dips on industrial user and sensitive equipment in Quanzhou area, the withstand ability on voltage dips for sensitive equipment was known.

A project relating to voltage dips and short interruptions has been undertaken better to meet customer s requirements with respect to the quality of supply.