Active safety correction method based on improved particle swarm optimization algorithm

Abstract

The invention provides an active safety correction method based on an improved particle swarm optimization algorithm. The active safety correction method comprises the steps of adjusting a power generator set total power deltaPG- for minimizing the deltaPG-; determining whether the result is optimal, if yes, forming a whole control strategy, and otherwise entering a next step; adjusting a load adjustment total amount deltaPF- for minimizing the deltaPF-; determining whether the optimization result is optimal, if yes, forming the whole control strategy, and otherwise entering a next step; and determining a fact that the system in current operation state has no capability for adjusting the load, and outputting a signal for alarming a trend stabilization problem in the line. The active safety correction method is advantageous in that a present situation that the power of the power generator set in the electric power system is continuously adjusted and the load is adjusted in 0-1 in the electric power system is considered, on condition that system trend transfer causes branch overload, a purpose of reducing the overloaded branch trend is realized through adjusting the power of the power generator set as possible; and the active safety correction strategy with least load power adjustment amount and highest power supply reliability is optimized.

Description

technical field [0001] The invention belongs to the technical field of active safety correction strategies and optimization algorithms, in particular to an active safety correction method based on an improved particle swarm hybrid optimization algorithm. Background technique [0002] The power flow transfer is one of the main reasons for the unreasonable action of the backup protection, especially the protection of overload and distance section III. In order to eliminate the branch overload caused by the power flow transfer as soon as possible, the corresponding generator output adjustment and load power adjustment should be quickly adopted. Measures, quickly control the load flow on the overload branch, and fundamentally eliminate the root cause of chain tripping. The active power safety correction strategy refers to a safety correction strategy for controlling the line power flow exceeding the limit proposed for real-time power dispatching under the premise of ensuring the...

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Problems solved by technology

The binary particle swarm optimization algorithm (Binary Particle Swarm Optimization, BPSO) for discrete binary variables is easy to implement for discrete space optimization problems, but both algorithms are not suitable for directly solving mixed integer programming problems

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