Proposes that substituting the weighted average value of peak and sub-peak electricity prices for peak electricity price is more reasonable,when using the ratio of peak to off-peak electricity price for three-division-rate el.

As for its operational actuality on the basis of the peak-valley price, the optimization of the daily operation scheme is presented.

Current peak-valley electricity price and reforming suggestions;

Research on the project using peak-valley electricity price to reduce the operation power charge has active significance.

Aiming at the problems of peak-valley electricity price to be implemented by Hebei southern electric network,an expression of calculating the income,wax and wane when implementing the peak-valley electricity price are derived out.

From the beginning of 2001, Zhejiang province has gradually promoted the peak and off-peak tariff, leading the resident customers to move the peak to fill the off-peak actively.

Maximum integrated profit model of short-term optimal scheduling of cascade hydropower plants based on peak and valley price considering both the profit of generation and the water-effective is established.