Economic dispatching method taking electric system cooperative capacity into consideration

Abstract

The invention discloses an economic dispatching method taking the electric system cooperative capacity into consideration. The method includes the steps that firstly, various sources in an electric system are divided into the sources with the automatic cooperative capacity, the sources with the controllable cooperative capacity and the sources with the re-controllable cooperative capacity according to different cooperative capacities; secondly, an automatic cooperative state, a controllable cooperative state and a re-controllable cooperative state are defined according to the first step; thirdly, an objective function of an economic dispatching model taking the electric system cooperative capacity into consideration is built according to the three cooperative states; fourthly, the constraint condition for minimum system power generation and standby cost of the economic dispatching model is determined; fifthly, the model is solved according to a quadratic programming algorithm, and then a base point and the spare capacity of a power generator in a next time period are acquired. According to the method, the space of an economic dispatching solution can be enlarged, it is avoided that no dispatching solutions exist but dispatching is practical and feasible, friendly linkage of dispatching and control is well achieved, renewable energy can be consumed by a power grid for power generation, and obvious practical significance and application prospects are achieved.

Description

technical field [0001] The invention relates to a dispatching method of a power system, in particular to an economic dispatching method considering the coordination capability of the power system. Background technique [0002] According to load forecasting, economic dispatching is to optimize the unit’s operating position and standby configuration in advance (such as the day before, half an hour ago, etc.) Small shows that the effect of scheduling is better, so there is a coordination problem between scheduling and control. Therefore, dispatching has been pursuing the organic progress of this coordination. For example, J.Zaborszky and others made pioneering research and practice from 1979 to 1983, and the coordination of the relationship between dispatching and automatic generation control (AGC) has been achieved. important progress. Its research is mainly aimed at the uncertainty of the load, because the load of the power system has a periodic fluctuation law, so it has c...

AI Technical Summary

Problems solved by technology

[0005] Looking at the current status of dispatching research, it is the consensus of many researchers to decide the operating position and backup configuration of dispatchable units based on prediction, but the object of backup configuration and the nature of frequency regulation characteristics have not yet been clearly revealed

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