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Power failure system partition linear optimization method considering path recovery

A system partitioning and linear optimization technology, applied in the field of power grid, can solve the problems of nonlinear model solving difficulties, low solving efficiency, unable to guarantee the optimality of the solution, etc. Effect

Pending Publication Date: 2022-05-31
NANJING UNIV OF SCI & TECH
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Problems solved by technology

However, the nonlinear model is difficult to solve, the solution efficiency is low, and the optimality of the solution cannot be guaranteed

Method used

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  • Power failure system partition linear optimization method considering path recovery
  • Power failure system partition linear optimization method considering path recovery
  • Power failure system partition linear optimization method considering path recovery

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Embodiment

[0117] Simulation scene

[0118] The present invention selects the IEEE10 machine 39 node system in England as the simulation scene of the nonlinear partition optimization method considering path recovery, and its topology structure diagram is as follows figure 2 The generator parameters are shown in Table 1. For this simulation, this embodiment selects the black start node and balance node of the two partitions of unit 30 and unit 33 respectively, and the start time is 2 minutes and 3 minutes respectively to start output, and the rest of the generators are waiting to resume power generation machine. In this simulation, it is stipulated that the number of the unit is consistent with the number of the node where it is located, the start-up time of the unit is the same as the recovery time of the connected bus, and the recovery time of each transmission line is uniformly positioned at 4 minutes.

[0119] Table 1 generator parameters

[0120]

[0121] Simulation results

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Abstract

The invention discloses a power failure system partition linear optimization method considering path recovery, which comprises the following steps of: coupling a partition problem and a recovery problem of a unit recovery path into a collaborative optimization problem for processing, and modeling into a mixed integer programming model for solving; by deciding the recovery path of the unit and optimizing the partition condition and the recovery time of the unit, the overall recovery time of the system is shortened, and the recovery efficiency of the system is improved; the method mainly comprises the following steps: establishing a linear partition model considering node recovery time; linearizing the unit starting segmentation model; coupling the models to establish a partition optimization model considering path recovery; a non-linear quantity in the model is processed. According to the method, the synchronous optimization of the power failure system partition and the unit recovery path is realized through the decision of the node recovery line and the unit recovery time, so that the power failure system can recover the available active power of the system in parallel with the maximum efficiency, the power failure recovery efficiency is improved, and the method has certain theoretical value and engineering value.

Description

technical field [0001] The invention belongs to the technical field of power grids, in particular to a partitioned linear optimization method for a power outage system considering path recovery. Background technique [0002] With the construction of a new type of power system, the high proportion of renewable energy and the high proportion of access to power electronic equipment have become prominent, and the complexity of power grid characteristics and operational difficulty have risen sharply, increasing the risk of power outages. Natural disasters, network attacks, line aging and human error may cause failures, and due to the close interconnection of various regions, small-scale accidents may lead to large-scale power outages in serious cases, affecting national production and life, and endangering national security. . Although the theory and technology of protection, stability and control are becoming more and more mature, great progress has been made in the safety and ...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/06
CPCH02J3/00H02J3/06H02J2203/20Y04S10/52
Inventor 谢云云罗瑞丰王振刚蔡胜王洁吴昊时涵殷明慧卜京邹云
Owner NANJING UNIV OF SCI & TECH
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