| 引用本文: | 李 滨,杜孟远,韦 维,韦 化.基于准实时数据的智能配电网理论线损计算[J].电力自动化设备,2014,34(11): |
| LI Bin,DU Mengyuan,WEI Wei,WEI Hua.Calculation of theoretical line loss based on quasi real-time data of smart distribution network[J].Electric Power Automation Equipment,2014,34(11): |
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| 摘要: |
| 目前配电网自动化覆盖率低，可采集到的数据较少，因此提出一种基于准实时数据的理论线损计算方法。基于状态估计建立智能配电网理论线损计算模型，根据历史数据确定模型中负荷不等式约束上下界，采用内点法求解模型。所提模型可利用线路始端节点注入功率和部分变压器量测终端的量测数据估计配电网潮流状态。算例分析结果表明，所提模型所需量测量数量少，状态估计结果精度较高。 |
| 关键词: 配电 状态估计 线路 损耗 计算 模型 量测量 内点法 |
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| 基金项目:国家自然科学基金资助项目（51107011，51167001）；广西大学科研基金资助项目（XBZ120044） |
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| Calculation of theoretical line loss based on quasi real-time data of smart distribution network |
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LI Bin, DU Mengyuan, WEI Wei, WEI Hua
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Department of Electrical Engineering，Guangxi University，Nanning 530004，China
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| Abstract: |
| Because the coverage rate of distribution network automation is low and less data can be acquired，a method based on the quasi real-time data is proposed to calculate the theoretical line loss. A model of theoretical line loss calculation is built based on the state estimation and the upper and lower bounds of its inequality constraints are determined according to the historical data. The interior point method is applied to get its solution. The state of distribution network power flow is estimated according to the injecting power of line head node and the measurements of partial transformer measuring terminals. Case study shows that，the proposed model estimates the state of power flow more precisely with less measurements. |
| Key words: electric power distribution state estimation electric lines electric losses calculations models measurements interior point method |
