电气技术
電氣技術
전기기술
ELECTRICAL ENGINEERING
2012年
2期
24-28
,共5页
可中断负荷%预测误差%CVaR%风电场%短期经济调度
可中斷負荷%預測誤差%CVaR%風電場%短期經濟調度
가중단부하%예측오차%CVaR%풍전장%단기경제조도
Interruptible load management%forecasting errors CVaR%wind farm%short-term economic dispatch
文中考虑在短期负荷及风电预测存在偏差的情况下,引入可中断负荷作为一种旋转备用以确保系统的功率平衡。以输电线路传送有功作为电网安全指标,采用CVAR风险理论描绘电网的不确定安全风险,构建了考虑可中断负荷及风电随机性的电力系统短期经济调度模型。在调度总成本中,除了计及常规机组的发电生产费用以外,还考虑了因电力供应不足所造成的需求侧停电补偿费用。最后通过IEEE14节点系统仿真计算,算例结果表明,该模型具有良好的理论意义和实用价值。
文中攷慮在短期負荷及風電預測存在偏差的情況下,引入可中斷負荷作為一種鏇轉備用以確保繫統的功率平衡。以輸電線路傳送有功作為電網安全指標,採用CVAR風險理論描繪電網的不確定安全風險,構建瞭攷慮可中斷負荷及風電隨機性的電力繫統短期經濟調度模型。在調度總成本中,除瞭計及常規機組的髮電生產費用以外,還攷慮瞭因電力供應不足所造成的需求側停電補償費用。最後通過IEEE14節點繫統倣真計算,算例結果錶明,該模型具有良好的理論意義和實用價值。
문중고필재단기부하급풍전예측존재편차적정황하,인입가중단부하작위일충선전비용이학보계통적공솔평형。이수전선로전송유공작위전망안전지표,채용CVAR풍험이론묘회전망적불학정안전풍험,구건료고필가중단부하급풍전수궤성적전력계통단기경제조도모형。재조도총성본중,제료계급상규궤조적발전생산비용이외,환고필료인전력공응불족소조성적수구측정전보상비용。최후통과IEEE14절점계통방진계산,산례결과표명,해모형구유량호적이론의의화실용개치。
Interruptible load was introduced as a kind of spinning reserve to balance system＇s power under the error situation of short-term load wind power forecasting. The CVAR was used to depict the grid＇s security risks and consider the limitation of transmission lines transmit active power and be as a network security indicator. Then set up short＇term economic dispatch including the randomness of interruptible load and wind farm. The total dispatch cost includes compensation cost due to the power supplying no sufficient in addition to generating cost. Through the IEEE14 system calculation, the result shows that the model is great of theoretical significance and practical value.
