中国电机工程学报Issue(34)：6191-6198,8.DOI:10.13334/j.0258-8013.pcsee.2014.34.022
小干扰稳定调度控制策略在线计算方法
An Enhanced Algorithm of Online Small Signal Stability Control Strategy Generation
摘要
Abstract
To online prevent or suppress the low-frequency oscillation, the sensitivity of eigenvalue to operating parameter is calculated. It is applied to generate the effective control strategy that can improve the system damp. At the beginning, Fuzzy ISODATA clustering method was utilized to obtain the coherent grouping relation of the buses, and then the controlled generators were screened by participation factor. With the efficient parallel computation of eigenvalue sensitivity, the gradients of the quantitative index of power system small signal stability (damping ratio) to control variables (generator output) could be obtained and used to direct generation dispatch. The control strategy satisfied many constraints, such as power limitation and the operability for dispatch operation. To solve 20 000 nodes scale power system problem, the time cost was less than 5 minutes. The effectiveness and feasibility of the proposed method were demonstrated using an actual power system of China. The online evaluation module using the proposed method was embedded in an online early warning and security assessment system for real practice.关键词
小干扰稳定/特征值灵敏度/低频振荡/并行计算Key words
small signal stability/eigenvalue sensitivity/low-frequency oscillation/parallel computation分类
信息技术与安全科学引用本文复制引用
于之虹,李芳,孙璐,刘娜娜,田芳,李亚楼,严剑峰..小干扰稳定调度控制策略在线计算方法[J].中国电机工程学报,2014,(34):6191-6198,8.基金项目
国家863高技术基金项目(2011AA05A119)；国家电网公司大电网重大专项资助项目课题(SGCC-MPLG001-2012)。The National High Technology Research and Development of China 863 Program (2011AA05A119) （2011AA05A119）
State Grid Corporation of China, Major Projects on Planning and Operation Control of Large Scale Grid of SGCC (SGCC-MPLG001-2012) （SGCC-MPLG001-2012）
