摘要
随着智能软常开开关(SNOP)和配电网静止同步补偿器(DSTATCOM)等新型配电设备的投入,需要对含SNOP和DSTATCOM的柔性配电网进行准确的静态状态估计。首先构建了基于加权最小绝对值法的配电网状态估计模型;其次提出了考虑SNOP、DSTATCOM及含蓄电池储能DSTATCOM(B-DSTATCOM)的传输功率损耗和多种控制方式的柔性配电网状态估计模型,进一步给出了保证可观测性需求的量测方程、控制伪量测方程及约束条件;最后基于IEEE 33节点柔性配电网测试系统,验证了所提方法的有效性和实用性。测试结果证明了所提状态估计模型对于SNOP、DSTATCOM及B-DSTATCOM不同控制方式的适用性以及考虑其传输功率损耗的必要性。
With the investment of SNOP(Soft Normally Open Point),DSTATCOM(Distributed STATic synchronous COMpensator) and other novel typed distributed equipment,there is a great need to achieve accurate state estimation for the flexible distribution network with SNOP and DSTATCOM. Firstly,the state estimation model of distribution network based on the weighted minimum absolute value method is constructed. Secondly,the state estimation model of the flexible distribution network is proposed,which considers the influence of power transmission loss and various control modes of SNOP,DSTATCOM and B-DSTATCOM(DSTATCOM with Battery energy storage system). Furthermore,the measurement equation,control pseudo measurement equation and constraint conditions are given to ensure the observability requirement. Finally,the effectiveness and practicability of the proposed method are verified on the IEEE 33-bus flexible distribution network test system. The test results prove the applicability of the proposed state estimation model to various control modes of SNOP,DSTATCOM and B-DSTATCOM,and the necessity of considering the power transmission loss.
作者
马鑫
田蓓
李宏强
薛飞
黄永宁
张汉花
吴玫蓉
MA Xin;TIAN Bei;LI Hongqiang;XUE Fei;HUANG Yongning;ZHANG Hanhua;WU Meirong(Electric Power Research Institute of State Grid Ningxia Electric Power Company,Yinchuan 750002,China;Key Laboratory of Ningxia Electrical Power Energy Security,Yinchuan 750002,China)
出处
《电力自动化设备》
EI
CSCD
北大核心
2020年第10期39-45,共7页
Electric Power Automation Equipment
基金
国家重点研发计划项目(2017YFE0132100)
宁夏自然科学基金资助项目(2020AAC03483)。
