小方式下基于高压电网结构调整的新型电压控制方法研究  

A new approach to voltage control based on HV grid transmission network reconfiguration during light load period

作　　者：王晓旭[1] 郝文斌[2] 滕予非[3] 胡沧粟 李坤 

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆400044 [2]国网四川省电力公司成都供电公司,四川成都610016 [3]国网四川省电力公司电力科学研究院,四川成都610016 [4]重庆大学自动化学院,重庆400044 [5]国网内蒙古东部电力有限公司物资分公司,内蒙古呼和浩特010020

出　　处：《电力系统保护与控制》2016年第3期72-77,共6页Power System Protection and Control

基　　金：国家自然科学基金项目(51277191);重庆市研究生科研创新项目资助(CYS14029)~~

摘　　要：为避免部分电网在小方式下因感性补偿装置不足导致的母线电压越上限的情况,提出了一种基于城市110 k V高压配电网络结构调整的新型调压方法。本策略综合考虑了线路热稳、变压器容量和潮流断面传输功率的约束条件,借鉴中低压配网重构思想,通过改变原有110 k V电压等级变电站接线方式,从而调整全网电压的偏移率。该方法采用贡献率指标评估对应变电站接线方式改变对系统电压的影响,并根据计算结果对电网结构进行调整,避免了传统的启发式优化算法导致的计算速度慢,维数灾难等缺点。四川某地区电网实际算例显示,提出的电压调整方法可以有效地改善网内电压分布,具有简单易行的优点,在工程中具有广泛的应用前景。To avoid bus voltage conducting above the up limit for lack of compensation devices during light load periods, a new voltage regulation method based on 110 kV urban distribution network reconfiguration is introduced. The strategy takes example by medium voltage network reconfiguration and considers the restraint of line thermal stability, transformer capacity and switching power flow on boundary, through changing original 110 kV substation connection mode, fnally optimizes the network voltage deviation degree. Contribution rate index is used to assess the influence of related substations＇ different connection mode on network-wide voltage amplitude, and according to the calculated results, the grid connection modes are regulated, thus classic heuristic algorithm＇s specific disadvantages of slow convergence speed and curse of dimensionality are avoided. Practical urban grid of Sichuan province indicates that the introduced voltage regulation method is simple and available, and can greatly optimize the voltage profile of the total network, so it has bright applying foreground in engineering. This work is supported by National Natural Science Foundation of China （No. 51277191） and Graduate Student Research Innovation Project （No. CYS 14029）.

关 键 词：小方式 高压配电网 网络重构 电压调整 贡献率 

分 类 号：TM714.2[电气工程—电力系统及自动化]