摘要
随着电力系统中多类型直流线路占比的逐步提升,调度系统与异构平台间的潮流数据交换需求明显增大,亟需研究新形态下交直流混联系统的潮流计算数据生成问题。该文从拓扑转换、网络拓扑分析、设备建模以及数据生成策略4个主要步骤,实现含交直流系统的基于可扩展标记语言的通用信息模型(common information model/extensible markup language,CIM/XML)数据到潮流计算输入数据的转换。首先,该文从设备间开关拓扑的角度,进行深度优先算法(depth first search,DFS)搜索和设备拓扑拼接,实现开关/节点模型到母线/支路模型的转换;其次,在筛选出活拓扑岛、剔除不带电设备后,着重分析了CIM/XML中换流器建模对交直流节点选取的影响,进而提出了直流节点选取规则和具备普适性的直流数据生成策略。最后,以某地调度500kV及以上交直流网络导出的CIM/XML数据为算例,潮流计算结果与数据采集与监视控制系统(supervisory control and data acquisition,SCADA)量测数据比对验证所提策略的有效性。
With the gradual increase of the proportion of multiple types of DC lines in the power system,the demand for power flow data exchange between the dispatching system and the heterogeneous platforms has increased significantly.So it is urgent to study the generation of power flow calculation data in the new form of AC-DC hybrid systems.In this paper,from the four main steps of topology transformation,network topology analysis,equipment modeling and data generation strategy,the CIM/XML data including an AC/DC system is converted to the input data of power flow calculation.Firstly,from the perspective of the switching topology between the devices,the Depth First Search algorithm(DFS)search and the device topology splicing are carried out to realize the conversion from the switch/node model to the bus/branch model.Secondly,after the active topological islands are screened and the non-live devices are eliminated,the influence of the converter modeling in the CIM/XML on the selection of the AC and DC nodes is emphatically analyzed.Then the selection rules of the DC nodes and the strategy of the DC data generation with universality are proposed.Finally,taking the CIM/XML data derived from an AC/DC network with a dispatch of 500kV or above as an example,the power flow calculation results are compared with the measured SCADA data to verify the effectiveness of the proposed strategy.
作者
黄耀辉
宋智强
赵化时
许建中
贾秀芳
赵成勇
HUANG Yaohui;SONG Zhiqiang;ZHAO Huashi;XU Jianzhong;JIA Xiufang;ZHAO Chengyong(State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources(North China Electric Power University),Changping District,Beijing 102206,China;Electric Power Dispatching and Control Center,CSG,Guangzhou 510670,Guangdong Province,China)
出处
《电网技术》
EI
CSCD
北大核心
2024年第4期1563-1572,共10页
Power System Technology
