Peak adjusting method of electrical network by taking external power reception into consideration

Abstract

The invention relates to a peak adjusting method of the electrical network by taking external power reception into consideration. The method comprises the following step that 1) the internal power structure and the external power reception manner of the electrical network whose peak is to be adjusted are obtained; 2) the power load of the electrical network within the peak adjusting period is predicted according to historical load information of the electrical network; and 3) a balanced peak adjusting strategy is made by considering the internal power structure, the external power reception manner as well as the power load state in the peak adjusting period, and internal and external power supplies are combined to adjust the peak. Compared with the prior art, the method has the advantages including that the peak adjusting effect is good.

Description

technical field [0001] The invention relates to a peak regulation method, in particular to a power grid peak regulation method considering external power receiving. Background technique [0002] With the strong support of relevant state departments, the tension in Shanghai's power supply has been significantly eased since the "12th Five-Year Plan", but at the same time, the external environment for Shanghai's power development is undergoing profound changes. With the favorable conditions of slowing down the growth rate of power demand in economic transformation, it also faces challenges such as higher and higher requirements for power supply security and cleanliness, increasing contradictions in peak-valley adjustment, and increasingly difficult implementation of power projects. [0003] Shanghai Power Grid is a typical receiving-end power grid. The proportion of external power has reached about half of the maximum load. The external power is mainly clean energy such as Sout...

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Problems solved by technology

[0006] (2) The pressure of power grid peak regulation increases, and the contradiction of operation is prominent

First, long-distance, large-capacity power transmission has many risks and hidden dangers. Once a failure occurs, it will have a serious impact on the safety of Shanghai’s power grid. Second, most of the incoming electricity outside the city is nuclear power and hydropower with poor regulation performance, which is different from Shanghai’s cities with large peak-valley differences and seasonal differences. The mismatch of point load characteristics increases the difficulty of peak regulation in Shanghai power grid

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