第二十卷增刊安徽电气工程职业技术学院学报2015年5月 Vol. 20,Supplement JOURNAL OF ANHUI ELECTRICAL ENGINEERING PROFESSIONAL TECHNIQUE COLLEGE May 2015
一种大规模电网继电保护整定计算新思路
王同文，田宏强 （国网安徽省电力公司调控中心，安徽合肥230022） 摘要：提出一种适用于大规模电网继电保护整定计算新思路，旨在提高计算效率。
算法首先 搜索全网一次模型结构，在目标区域数量和最少边界支路双重约束下，自动给出最佳分区结 果；应用广度搜索算法形成各目标区域内部详细电网模型和相邻区域边界信息；将大规模电网 分解成若干个子网进行整定计算。
算法解决了大电网整定计算效率和超大规模矩阵存储难 题，并提供边界支路间保护配合关系和准确的分支系数，在安徽省级电网的应用结果证实了算 法的有效性。
算法为大规模电网的继电保护整定计算提供一种解决方案，具有较强的推广应 用价值。
关键词：大规模电网；继电保护；整定计算；分区技术 中图分类号：TM771文献标识码：A文章编号：1672-9706(2015)增刊-0001-05
NewMethodforLarge ScalePower Grid RelayProtection Setting Calculation WANGTong-wen,TIANHong-qiang (Dispatch & Control Center，State Grid Anhui Electric Power Corporation，Hefei 230022，China） Abstract:In order to improve the efficiency,a new partitioning algorithm for large scale power grid relay protection setting calculation is proposed in the paper. Under the restriction of the objective area number and the least boundary branch, the method provides the optimal partitioning results based on the power system figure. Both the within detailed power grid model and area boundary information are gained by u- sing breadth-first algorithm, and then the several subset models are obtained. Finally the relay protection setting calculation is analyzed in the smaller power system figure. The technology overes both the cal- culation efficiency and the multi-dimension matrix problem for large power system setting calculation， and also offers the backup protection coordination relation between boundary branches and the exact branch coefficient. The application results on Anhui area power grid show its validity. Therefore as a partitioning method for large power grid setting calculation, it has high engineering value. Key words:large scale power grid;relay protection; setting calculation; partitioning technology
0引言 在继电保护整定计算过程中，通常只建立本区域电网的详细模型，相邻区域采用等值模型简化处 性。
然而，在区域联络线边界节点的整定计算则存在不足，一是无法提供详细的与相邻区域边界支路的 保护配合，如距离保护的配合关系；二是难于考虑相邻区域运行方式变化对本区域边界支路故障计算分 支系数的影响。
一种潜在可行的解决方式是建立...
