电力系统自动化
電力繫統自動化
전력계통자동화
AUTOMATION OF ELECTRIC POWER SYSTEMS
2013年
22期
35-40
,共6页
静态安全%风电随机性%灵敏度%随机潮流%概率方法
靜態安全%風電隨機性%靈敏度%隨機潮流%概率方法
정태안전%풍전수궤성%령민도%수궤조류%개솔방법
static security%randomness of wind power%sensitivity%probabilistic load flow%probabilistic method
基于灵敏度分析理论和随机潮流计算方法，提出了一种适用于含风电电网规划的静态安全快速分析的概率方法。该方法综合考虑了风电场出力随机性、常规机组强迫停运、负荷预测不确定性等因素，运用灵敏度分析法对电网进行断线模拟，通过考虑电网结构变化的随机潮流计算进行概率分析。在计算灵敏度矩阵时考虑了网络结构变化的影响，提高了该方法的计算精度。运用半不变量和Gram-Charlier级数的相关理论避免了复杂的卷积计算，加快了该方法的计算速度。同时，运用故障排序技术避免对所有线路进行开断校验，减少了工作量。对含风电的 IEEE 14节点系统进行了静态安全分析，验证了所述方法的有效性。
基于靈敏度分析理論和隨機潮流計算方法，提齣瞭一種適用于含風電電網規劃的靜態安全快速分析的概率方法。該方法綜閤攷慮瞭風電場齣力隨機性、常規機組彊迫停運、負荷預測不確定性等因素，運用靈敏度分析法對電網進行斷線模擬，通過攷慮電網結構變化的隨機潮流計算進行概率分析。在計算靈敏度矩陣時攷慮瞭網絡結構變化的影響，提高瞭該方法的計算精度。運用半不變量和Gram-Charlier級數的相關理論避免瞭複雜的捲積計算，加快瞭該方法的計算速度。同時，運用故障排序技術避免對所有線路進行開斷校驗，減少瞭工作量。對含風電的 IEEE 14節點繫統進行瞭靜態安全分析，驗證瞭所述方法的有效性。
기우령민도분석이론화수궤조류계산방법，제출료일충괄용우함풍전전망규화적정태안전쾌속분석적개솔방법。해방법종합고필료풍전장출력수궤성、상규궤조강박정운、부하예측불학정성등인소，운용령민도분석법대전망진행단선모의，통과고필전망결구변화적수궤조류계산진행개솔분석。재계산령민도구진시고필료망락결구변화적영향，제고료해방법적계산정도。운용반불변량화Gram-Charlier급수적상관이론피면료복잡적권적계산，가쾌료해방법적계산속도。동시，운용고장배서기술피면대소유선로진행개단교험，감소료공작량。대함풍전적 IEEE 14절점계통진행료정태안전분석，험증료소술방법적유효성。
Based on the sensitivity analysis and probabilistic load flow calculation,a probabilistic method of fast static security analysis is presented for the planning of power system containing wind power.The randomness of wind farm output,the unscheduled unit outages and the fluctuation of load forecast are taken into account in this method.The sensitivity analysis is used to simulate the branch outages,and the probabilistic load flow calculation considering the changes of grid infrastructure is applied to realize the probability analysis.The accuracy of this method is improved by using the sensitivity matrix that considering the changes of grid infrastructure.In order to accelerate the calculation,the theories about semi-invariant and Gram-Charlier series expansion are applied to avoid the complex convolution calculation.Simultaneously,the technology of contingency sequencing is adopted to avoid analyzing the outages of each branch,which reduces the calculation amount.The simulation results obtained for the IEEE 14-bus test system containing wind farms demonstrate the effectiveness of the proposed method.
