电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2013年
7期
41-45
,共5页
电能质量%贝叶斯算法%权重%属性识别模型%电能评估
電能質量%貝葉斯算法%權重%屬性識彆模型%電能評估
전능질량%패협사산법%권중%속성식별모형%전능평고
power quality%Bayesian algorithm%weight%attribute recognition model%power evaluation
电能质量的合理评估是实现电能监管的基础,也是提高能源使用效率的有力保证.为提高电能质量综合评估的客观性和准确性,提出一种新的综合评估算法.首先,利用贝叶斯算法修正各等级下的主观权重,得到各等级下的权重优化值;其次,借助于属性识别模型,对监测点的电能质量的各项指标进行分级评估,再结合权重的优化值,计算得到监测点的综合属性测度(亦即电能质量整体的等级数);最后通过实例验证了所提算法的实用性与客观性.
電能質量的閤理評估是實現電能鑑管的基礎,也是提高能源使用效率的有力保證.為提高電能質量綜閤評估的客觀性和準確性,提齣一種新的綜閤評估算法.首先,利用貝葉斯算法脩正各等級下的主觀權重,得到各等級下的權重優化值;其次,藉助于屬性識彆模型,對鑑測點的電能質量的各項指標進行分級評估,再結閤權重的優化值,計算得到鑑測點的綜閤屬性測度(亦即電能質量整體的等級數);最後通過實例驗證瞭所提算法的實用性與客觀性.
전능질량적합리평고시실현전능감관적기출,야시제고능원사용효솔적유력보증.위제고전능질량종합평고적객관성화준학성,제출일충신적종합평고산법.수선,이용패협사산법수정각등급하적주관권중,득도각등급하적권중우화치;기차,차조우속성식별모형,대감측점적전능질량적각항지표진행분급평고,재결합권중적우화치,계산득도감측점적종합속성측도(역즉전능질량정체적등급수);최후통과실례험증료소제산법적실용성여객관성.
@@@@A good power quality evaluation method can not only realize the power management, but also improve the energy efficiency. In order to make the power quality evaluation more objective and accurate, a new synthetic assessment algorithm is proposed. Firstly, the optimal weights for all power quality levels are calculated by using the Bayesian algorithm under each level. Then, all kinds of power indexes of monitoring point are evaluated based on the attribute recognition model. Combined with the optimized weight, the degree of attribute measurement can be calculated and the power quality evaluation can be achieved. Finally, a case study demonstrates the effectiveness and objectivity of the proposed method.
