摘要
广义Tellegen定理只与物理系统所建立的数学模型有关,与该物理系统属性无关,因而广泛地应用于电力系统中。其小扰动定理为电力系统潮流计算提供了可能。保留非线性电流注入型的潮流计算就是将节点注入电流方程Taylor级数展开,并保留到二阶项,得到含有非线性项的修正方程式。在此基础上,利用广义Tellegen定理的小扰动定理,给出新的修正方程式,从而简化了求解过程。仿真结果表明,在保持计算精度和收敛性不变的情况下,提高了潮流计算速度,同时拓宽了广义Tellegen定理的应用领域。
General Tellegen＇s theorem bears a relation to the mathematical models in the physics system, however, is out of relation to any attributes in the physics system. It has been applied widely in power system. The perturbation method makes it possible to calculate in power flow calculation. The second-order Taylor series expansion is used to get a modifying equation in the current-influx model retaining-nonlinearity power flow calculation. The perturbation method of the general Tellegen＇s theorem is applied to this power flow calculation. New modifying equation is obtained. The method predigests the solving process, and in the case of keeping no changes on the computational accuracy and field which general Tellegen＇s theorem can be used. astringency, improves power flow algorithm speed and widens the
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第17期40-43,共4页
Power System Protection and Control
基金
辽宁省教育厅资助项目(2007T081)
辽宁省重点实验室资助项目(200521315)
