计算机仿真
計算機倣真
계산궤방진
COMPUTER SIMULATION
2014年
5期
139-142
,共4页
变电站%电压无功控制%多目标优化%遗传算法
變電站%電壓無功控製%多目標優化%遺傳算法
변전참%전압무공공제%다목표우화%유전산법
Substation%Voltage quality control%Multiple-objective optimizing%Genetic algorithm
在变电站实际调控过程中，变电站电压无功控制装置既要控制电压和无功尽量接近理想值，又要尽可能减少分接头的调节次数和电容器的投切次数。上述过程为一个典型的多目标优化问题。传统的九区图控制法未考虑分接头调节对电压无功的影响，从而造成设备频繁动作。为提高控制效率，建立了一种多目标优化的变电站VQC控制模型，并通过改进遗传算法进行求解。仿真分析表明，提出的策略和算法能够有效减少分接头的调节次数，提高变电站的电压质量，获得更好的控制效果。
在變電站實際調控過程中，變電站電壓無功控製裝置既要控製電壓和無功儘量接近理想值，又要儘可能減少分接頭的調節次數和電容器的投切次數。上述過程為一箇典型的多目標優化問題。傳統的九區圖控製法未攷慮分接頭調節對電壓無功的影響，從而造成設備頻繁動作。為提高控製效率，建立瞭一種多目標優化的變電站VQC控製模型，併通過改進遺傳算法進行求解。倣真分析錶明，提齣的策略和算法能夠有效減少分接頭的調節次數，提高變電站的電壓質量，穫得更好的控製效果。
재변전참실제조공과정중，변전참전압무공공제장치기요공제전압화무공진량접근이상치，우요진가능감소분접두적조절차수화전용기적투절차수。상술과정위일개전형적다목표우화문제。전통적구구도공제법미고필분접두조절대전압무공적영향，종이조성설비빈번동작。위제고공제효솔，건립료일충다목표우화적변전참VQC공제모형，병통과개진유전산법진행구해。방진분석표명，제출적책략화산법능구유효감소분접두적조절차수，제고변전참적전압질량，획득경호적공제효과。
During the practical operation of the VQC system in the substation, the voltage of the secondary bus and reactive power should trace the ideal value as closely as possible. Meanwhile, the switching operation of the taps and capacitors should be minimized to protect the equipment. Such a VQC control can be characterized by a typical multi-objective optimizing processing. The traditional nine-zone doesn't account for the impact of the adjustment of the tap on the reactive power, resulting in over-frequent operating of the equipment. To overcome this shortcoming, a multiple-objective optimizing algorithm was proposed for the substation VQC controlling strategy. And, an improved genetic algorithm was adopted for the optimal solving as well. Simulating results indicate that, the proposed control-ling strategy and solving algorithm help to reduce the operating times of the tap, and are able to improve the substation voltage, and achieve better controlling performance as well.
