广东电力
廣東電力
엄동전력
GUANGDONG ELECTRIC POWER
2014年
7期
78-82
,共5页
电力系统%卡尔曼滤波%动态状态估计%自适应%遗传算法
電力繫統%卡爾曼濾波%動態狀態估計%自適應%遺傳算法
전력계통%잡이만려파%동태상태고계%자괄응%유전산법
power system%Kalman filter%dynamic state estimation%self-adaptive%genetic algorithm
针对卡尔曼滤波动态状态估计中 Holts′两参数均为常数,在电力系统运行状态变化时易产生较大的预测误差的不足,提出采用指数平滑法对参数进行动态调整。该方法在预测步中利用遗传算法来动态确定参数大小,实现了预测参数的自适应优化。最后,对 IEEE 14节点系统进行仿真计算,与传统方法进行比较,结果表明本文方法具有明显的优势。
針對卡爾曼濾波動態狀態估計中 Holts′兩參數均為常數,在電力繫統運行狀態變化時易產生較大的預測誤差的不足,提齣採用指數平滑法對參數進行動態調整。該方法在預測步中利用遺傳算法來動態確定參數大小,實現瞭預測參數的自適應優化。最後,對 IEEE 14節點繫統進行倣真計算,與傳統方法進行比較,結果錶明本文方法具有明顯的優勢。
침대잡이만려파동태상태고계중 Holts′량삼수균위상수,재전력계통운행상태변화시역산생교대적예측오차적불족,제출채용지수평활법대삼수진행동태조정。해방법재예측보중이용유전산법래동태학정삼수대소,실현료예측삼수적자괄응우화。최후,대 IEEE 14절점계통진행방진계산,여전통방법진행비교,결과표명본문방법구유명현적우세。
Aiming at problem of Kalman filter dynamic state estimation of which both Holts′parameters are constants and may produce bigger forecast error when power system running state changing,this paper proposes to use exponential smoot-hing method to carry on dynamic adjustment for parameters.By applying genetic algorithm in forecast steps,this method was able to dynamically confirm parameter size and realize self-adaptive optimization of forecast parameters.At last,simulation calculation on IEEE 1 4 node system was conducted.Compared with traditional method,the result indicated that this method was provided with obvious advantages.