Security constrained economic dispatching method, system, device and readable storage medium

Abstract

The application discloses a security constrained economic dispatching method, system, device and computer readable storage medium, with the goal of realizing reserve requirements for dynamic operation. After considering the operating reserve price of a power generator set and the objective function and constraint conditions of the operating reserve plan. The security constrained economic dispatching method comprises the following steps: calculating the output plan and operating reserve plan of the set through substituting the operational reserve requirement of given power grid into the objective function and the constraint conditions; obtaining the operational reserve requirement of the current power grid using the operational reserve plan; deciding whether the coefficient of convergenceis met by comparing the operational reserve requirements of current power grid to the previous operational reserve requirements of current power grid, and if the coefficient of convergence is not met,substituting the operational reserve requirements of current power grid into the objective function and the constraint conditions again to obtain the next operational reserve requirements of the power grid and performing repeated iteration until the coefficient of convergence is met; outputting the operational reserve requirement of current power grid and the output plan of the set; the securityconstrained economic dispatching method reduces operating reserve level of the system and improves electric energy availability of the power generator set and running benefit of the power grid.

Description

technical field [0001] The present invention relates to the technical field of electric power dispatching automation, in particular to a security-constrained economic dispatching method, system, device and computer-readable storage medium. Background technique [0002] Operation reserve is an important content in the arrangement of power system operation mode. Its purpose is to stabilize the mismatch between supply and demand caused by load forecast deviation, and to meet the power shortage caused by grid equipment failure. [0003] In the arrangement of traditional power grid operation mode, the method of constant operation reserve reservation is often adopted. Its main feature is to determine the operation reserve level of each period of the day according to the impact of load forecast deviation under extreme power grid mode and the maximum power shortage that may be caused by a single component failure. Based on this, the power generation plan of the generating set is com...

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Problems solved by technology

[0003] In the arrangement of traditional power grid operation mode, the method of constant operation reserve reservation is often adopted. Its main feature is to determine the operation reserve level of each period of the day according to the impact of load forecast deviation under extreme power grid mode and the maximum power shortage that may be caused by a single component failure. Based on this, the power generation plan of the generating set is compiled, but in the method of constant operation reserve reservation, the probability of extreme mode occurrence is small and the duration is short, resulting in the reserve operation reserve is often not fully utilized during operation, objectively At the same time, because a large amount of power generation resources are used for reserve operation, the actual available power generation capacity is affected, resulting in high power and operation reserve costs

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