考虑负荷转供的校正型安全约束最优潮流模型研究  

Corrective security constrained optimal power flow considering load transfer capacity

作　　者：荆朝霞[1] 张露 谭慧娟 王天赐 JING Zhaoxia;ZHANG Lu;TAN HuiJuan;WANG Tianci(School of Electric Power Engineering,South China University of Technology,Guangzhou 510640,China;Hainan Nuclear Power Co.Ltd.,Changjiang 572700,China)

机构地区：[1]华南理工大学电力学院,广州510640 [2]海南核电有限公司,海南昌江572700

出　　处：《自动化与仪器仪表》2020年第3期21-24,共4页Automation & Instrumentation

摘　　要：针对电力系统的经济调度问题,采用最优潮流模型求解考虑N-1静态安全约束的经济调度问题,为了反映电网对故障的调节能力,在N-1故障状态下提出通过网络重构将故障区域负荷转移至其他未受影响的区域,即负荷转供能力。建立了考虑中高压配电网的负荷转供安全约束最优潮流模型,减少调度高价的安全约束必开机组,有效降低电网的购电成本。在标准算例中将校正型控制模型与预防型控制模型进行对比,验证文中所提模型能够降低4%购电成本。Aiming at the economic dispatching problem of power system,the optimal power flow model is used to solve the economic dispatching problem considering N-1 static security constraints.In order to reflect the corrective ability of power grid to faults,corrective measures such as transferring load from fault area to other unaffected areas through network reconfiguration are proposed under the condition of N-1 faults,i.e.load transfer capability.An optimal power flow model considering load transfer security constraints in medium and high voltage distribution networks is established to reduce the high-cost security constraints of dispatching and to effectively reduce the power purchase cost of power grids.The comparison between the corrected control model and the preventive control model in a standard example shows that the proposed model can reduce the electricity purchase cost by 4%.

关 键 词：最优潮流 N-1安全约束 负荷转供 BENDERS分解法 

分 类 号：TP15[自动化与计算机技术—控制理论与控制工程]