Allocation Method of Spare Capacity in Control Area of ​​Regional Power Grid

Abstract

An embodiment of the invention provides a distribution method for reserve capacity of regional power grid control zones. The method includes the steps: acquiring internal risk reserves of the control zones by multiplying maximum expected load of the control zones by a first proportionality coefficient; subtracting the sum of internal risk reserves of all the control zones in a power grid from the total reserve of the whole grid to obtain a difference value, and multiplying the difference value by a second proportionality coefficient to acquire external risk reserves of the control zones; acquiring superposition reserves of the unblocked control zones according to the external risk reserves, maximum transmittable power, tie line plan power and a third proportionality coefficient of the blocked control zone; acquiring the total reserve distributed to the control zones by combining the internal risk reserves, the external risk reserves and the superposition reserves of the control zones. The method has the advantages that one scientific, reasonable and realistic distribution method for the reserve capacity in the regional dimension is provided, and quick recovery of grid system frequency is guaranteed.

Description

technical field [0001] The invention relates to the field of electric power systems, in particular to a method for allocating reserve capacity in a regional grid control area. Background technique [0002] The reason why the power system needs reserve capacity is mainly determined by the characteristics of power industry production and the imbalance of power consumption by users. The production, transmission and consumption of electric energy are carried out almost at the same time, and electric energy cannot be stored in large quantities, and the electricity consumption of users is also characterized by randomness and imbalance. Therefore, the power grid is very likely to experience disturbances such as random equipment outages and load fluctuations. In order to ensure the safe and reliable operation of the power system, ensure that the frequency is within the specified range, and avoid large-scale cascading failures or even large-scale power outages, sufficient operating ...

AI Technical Summary

Problems solved by technology

In the traditional way, the reserve allocation ratio of each control area is fixed throughout the year, without considering factors such as load changes in the control area, actual adjustable reserve capacity, and the actual situation such as the operation mode of the power grid and the constraints of the power grid network.

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