摘要
可开放容量评估是配电网规划与运行的主要工具之一,对于提升配网可靠性、制定升级和改造策略具有重要参考价值。针对传统可开放容量评估过度简化、无法有效处理多联络馈线的缺陷,该文建立了考虑N-1安全和网络重构的配电网可开放容量评估模型。该模型同时考虑了正常运行状态的潮流约束和故障状态下的开关操作约束,具有解的质量高、计算结果可行等优点。为求解该模型,提出基于广义Benders分解-二分逼近的双层混合算法。该算法利用上层逼近、下层检验、双层互动的思想,通过交替迭代的方式不断收缩解空间,直至获得最优解。22节点和70节点系统的测试结果验证了该模型和算法的正确性和有效性。
Open capacity evaluation is one of the main tools for distribution network planning and operation,which has important reference value for improving the reliability level of distribution network and formulating upgrade and reconstruction schemes.In order to overcome the shortcomings of traditional open capacity evaluation model which are oversimplified and unable to deal with multi-tie feeders effectively,a novel open capacity evaluation model considering N-1 security criteria and network reconfiguration was established.The proposed model considered both the power flow constraints under normal conditions and the switch operation constraints under fault conditions,and thus had the advantages of high quality of the solution and feasible calculation results.To solve this model,a generalized Benders-dichotomy approximation bilevel hybrid algorithm was proposed.The algorithm used the idea of upper layer approximation,lower layer checking and double layers interaction to continuously shrink the solution space in an alternating iterative manner until the optimal solution was obtained.The test results of 22-node and 70-node systems verify the correctness and effectiveness of the proposed model and algorithm.
作者
胡伟
杨梓俊
荆江平
吴奕
韩锋
汪超群
HU Wei;YANG Zijun;JING Jiangping;WU Yi;HAN Feng;WANG Chaoqun(State Grid Jiangsu Electric Power Company,Nanjing 210024,Jiangsu Province,China;College of Electrical Engineering,Zhejiang University,Hangzhou 310007,Zhejiang Province,China)
出处
《现代电力》
北大核心
2020年第2期125-132,共8页
Modern Electric Power
基金
国网江苏省电力有限公司科技项目(52100218001D)。
关键词
配电网
可开放容量评估
网络重构
N-1安全准则
潮流约束
广义Benders分解
distribution network
open capacity evaluation
network reconfiguration
N-1 security criteria
power flow constraints
generalized Benders decomposition
