The numerical simulation of exterior flow for a single car and two cars moving side by side is carriedout using the international standard MIRA model,where the ground effect is simulated by the moving wall boundary condition.

Research on Automotive Aerodynamic Characteristics of Platoon

Comparison and analysis of 110 kV bus segmentation and parallel operation in Kunming power grid;

This paper makes an analysis and research on the combustion control system of parallel boilers,and puts forward a main steam header pressure control system for boilers in parallel operation.

The causes are found out and analyzed why the current is abnormal when two 110 kV main transformers are in parallel operation,and theoretical calculations are carried out for the circulating current produced in different voltage ratio and the abnormal current.

These can be used to improve the arrangement of transformers parallel running for the purpose of reducing the energy loss.

The transformer parallel running must satisfy four conditions are:The connection group leaves must to be same;Fixed voltage ratio is equal,permits phase difference ±5%;The bucking voltage percentage is equal,permits phase difference ±10%;The capacity compares does not surpass 3∶1.