It is put forward to take Dakai reservoir as backup water source.

This paper expounds the basic situation of project construction region and the water supply situations of YRDP and Taiyuan City, demonstrates the necessity and urgency of project construction, and analyzes the situation and feasibility of scheme selection and project site selection for backup water source.

Study of urban emergency reserve water source and channel construction:a case of Nanjing;

For emergency power supply or standby power supply in high building, selection of the diesel generating set is almost the only solution which is decided by its characteristics.

Aiming at the problems existing in the analog automatic switch-in test and operation of 6 kV standby power supply in Huangpu Power Plant, this paper analyzes the operation principle of low-voltage protection for 6 kV auxiliary bus,and puts forward a solution to the problems in the analog automatic switch-in test.

Necessity, design and installation requirement of the emergency power supply for cathodic electrophaetic finishing system is daserided.

If there is only one external power supply in the auxiliary power system,the emergency power supply system should make the power plant have the ability of black startup ,so that when auxiliary power supply disappears,the emergency power supply units can start up to resume power supply.