Partition optimization method for power system operation reserves of considering interval support and section constraints

Abstract

The invention discloses a partition optimization method for power system operation reserves of considering an interval support and section constraints. The method comprises the following steps: firstly, determining the types and the requirements of to-be-optimized reserves, partitioning a power grid and converting the partition reserve requirements into the overall reserve requirements of the system, and then carrying out equivalent processing on a power and a reserve support of the external power grid; and aiming at the minimum sum of the power generation cost and the reserve cost, considering a power balance equation, output power constraints of generators, ramp rate constraints of various reserves, capacity constraints of various reserves, transmission line constraints and section power constraints, and determining an allocation scheme for various partition reserves of the power system. The method carries out joint optimization on active outputs of various partitions and various reserves under the premises of fully utilizing the interval support and meeting the section constraints, well achieves optimal allocation of resources and has certain reference value for power grid planning and operating.

Description

technical field [0001] The invention relates to an optimization method for power system operation backup, in particular to a power system operation backup partition optimization method considering interval support and section constraints. Background technique [0002] Power grid operation backup is an indispensable technical means to maintain the safe and stable operation of the power grid and ensure the high-quality and economical operation of the power grid. A certain amount of power reserves should be reserved during the operation of the power grid to cope with sudden changes in load, power grid failures, random outages of power generation equipment, etc., so as to minimize the adverse impact of the contradiction between power supply and demand on society and enterprises. Generally, the higher the ratio of reserve capacity to the total system load, the higher the power supply reliability of the system, but too much reserve capacity will cause low utilization of power gene...

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Problems solved by technology

The probabilistic method is based on the quantitative analysis of the reliability index of the power system, and judges whether the reserved capacity of the system is reasonable according to the reliability criterion, but this method cannot provide quantitative support for the economy.

At the same time, these two methods did not solve the problem of how to allocate the reserve capacity on each generating set

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