| 引用本文: | 谈天夫,高 山,李海峰,罗建裕.考虑负荷分布变化的改进组合电力系统等效负荷持续曲线法[J].电力自动化设备,2014,34(12): |
| TAN Tianfu,GAO Shan,LI Haifeng,LUO Jianyu.Improved composite power system equivalent load duration curve method considering variation of load distribution[J].Electric Power Automation Equipment,2014,34(12): |
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| 摘要: |
| 针对组合电力系统等效负荷持续曲线法中忽视负荷水平变化的影响而导致的可靠性评价偏差，采用基于负荷比例分布的聚类方法对负荷水平的变化进行描述，依据聚类中心集并借助于灵敏度方法进行负荷点最大可达功率值计算，采用相关因子概念反映节点负荷水平与负荷比例分布之间的关联，形成改进的组合电力系统等效负荷持续曲线法。MRBTS系统和IEEE-RTS 79系统算例结果表明，改进后的算法在可靠性指标评价的准确性方面有所提高，在系统各负荷相关度较低的情况下效果明显。 |
| 关键词: 电力系统 负荷 随机生产模拟 最大可达功率 聚类方法 相关因子 灵敏度分析 |
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| 基金项目:国家高技术研究发展计划（863计划）资助项目（2011-AA05A105） |
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| Improved composite power system equivalent load duration curve method considering variation of load distribution |
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TAN Tianfu1, GAO Shan1, LI Haifeng2, LUO Jianyu2
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1.School of Electrical Engineering，Southeast University，Nanjing 210096，China;2.Jiangsu Electric Power Company，Nanjing 210014，China
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| Abstract: |
| Since the reliability evaluation error of the CMELDC（Composite power system Equivalent Load Duration Curve） method is induced by the neglect of load level change，an improved CMELDC method is introduced，which adopts the clustering method based on the load proportional distribution to describe the load change，uses the sensitivity method to calculate the maximum arrival power of each load point according to the clustering center set，and applies the correlation factor to reflect the correlation between node load level and load proportional distribution. The results of case study for MRBTS system and IEEE-RTS 79 system show that，the improved method has higher accuracy in the reliability index evaluation，especially when the correlation between load nodes is low. |
| Key words: electric power systems electric loads probabilistic production simulation maximum arrival power clustering algorithms correlation factor sensitivity analysis |
