中国电机工程学报
中國電機工程學報
중국전궤공정학보
ZHONGGUO DIANJI GONGCHENG XUEBAO
2014年
31期
5507-5515
,共9页
配电网%仿射算法%分布式电源%不确定影响力%不确定潮流
配電網%倣射算法%分佈式電源%不確定影響力%不確定潮流
배전망%방사산법%분포식전원%불학정영향력%불학정조류
distribution network%affine arithmetic%distributed generation (DG)%uncertainty influence%uncertain power flow
风力、光伏发电受天气变化影响，功率输出具有随机性和不确定性。大量风力、光伏发电系统以分布式电源形式接入配网，导致了配电网潮流的不确定性。采用仿射数表达分布式电源出力的不确定性，提出了基于仿射数学的三相前推回代仿射潮流算法解决配电网不确定潮流问题。仿射数能够记录不确定变量之间的相关性，利用此性质提出了不确定变量相对影响力指标。采用33节点典型配电系统进行验证分析，结果表明，所提指标能够定量分析分布式电源出力不确定性对配电网各节点电压的影响情况。
風力、光伏髮電受天氣變化影響，功率輸齣具有隨機性和不確定性。大量風力、光伏髮電繫統以分佈式電源形式接入配網，導緻瞭配電網潮流的不確定性。採用倣射數錶達分佈式電源齣力的不確定性，提齣瞭基于倣射數學的三相前推迴代倣射潮流算法解決配電網不確定潮流問題。倣射數能夠記錄不確定變量之間的相關性，利用此性質提齣瞭不確定變量相對影響力指標。採用33節點典型配電繫統進行驗證分析，結果錶明，所提指標能夠定量分析分佈式電源齣力不確定性對配電網各節點電壓的影響情況。
풍력、광복발전수천기변화영향，공솔수출구유수궤성화불학정성。대량풍력、광복발전계통이분포식전원형식접입배망，도치료배전망조류적불학정성。채용방사수표체분포식전원출력적불학정성，제출료기우방사수학적삼상전추회대방사조류산법해결배전망불학정조류문제。방사수능구기록불학정변량지간적상관성，이용차성질제출료불학정변량상대영향력지표。채용33절점전형배전계통진행험증분석，결과표명，소제지표능구정량분석분포식전원출력불학정성대배전망각절점전압적영향정황。
Weather conditions have the property of intermittence and randomness which directly incur the uncertainty of power output of wind generators and photovoltaic systems. The integration of these variable and intermittent power sources into distribution power system results in widespread uncertainties of distribution power flows. The affine numbers was applied to describe the uncertainty of power output of distribution generation, and an affine arithmetic-based three-phase forward-backward sweep power flow calculation method was proposed to solve the uncertainty power flow problem. The affine number can keep track on the correlations between each variables, based on this property, the index of influence of uncertain variables on outcomes was proposed. The proposed method was tested on the 33-bus distribution system and the results show that the proposed index can quantify the impacts of individual distribution generation uncertain factors on each bus voltages in the distribution power system.
