This article introduces the outfit scheme about modernization equipment of physics laboratory in senior high school designed and used by Dongying City No.

Aiming at electric metering error caused by the difference between rated secondary load and actual secondary operating load of high voltages metering box voltage transformer,through simulating different load,the influence of secondary circuit load on metering error are analyzed,and the reasonable load allocation scheme are putted forward.

A new distributed allocation scheme of voltage transfo rm er is submitted, through which normal schemes are analyzed for 220 kV voltage tr a nsformer of 500,220 kV substations.

By use of power system analysis software Power World the power flow of a certain regional power network is simulated; from this the nodes and zones with weak voltage stability are found out, and an optimal configuration scheme of phasor measurement units (PMUs) in this regional power network is proposed.

Technical and economic analyses of 1 000 MW USC unit once-through seawater supply system circulating water pump configuration schemes,including 1 unit with 2 pumps(extended unit scheme) and 1 unit with 3 pumps(unit scheme),are performed.

According to the principles of strengthening the main protection and simplifying the backup protection, a new protection configuration scheme of interconnecting transformer in 500 kV system is put forward.

The analysis of the disposition scheme of Mine Discharge Pump by using of reliability;

Based on the introduction to the types and applications of large gas turbines and gas steam combined cycle power generating units,a specific approach is made to the disposition schemes of combined cycle units.