多平衡机潮流计算在调度员潮流中的应用

Application of multi-slack load flow calculation in dispatcher power flow

在调度员潮流中,多平衡机潮流计算比常规潮流计算更加符合电力系统的实际情况,计算结果更为准确。围绕系统不平衡功率的计算,提出了多平衡机潮流计算的三种算法:静态法、准动态法和基于动态潮流理论的动态法,并对每一种算法进行了详细介绍。平衡机群中各平衡发电机进行不平衡功率的分配可以采取多种分配方式,且需要考虑发电机有功出力的限制。对照IEEE14节点标准系统的测试结果表明本文的计算方法是有效、可行的。

Compared with conventional load flow calculation, results of multi-slack load flow calculation are closer to practical power systems in dispatcher power flow. Three algorithms of multi-slack load flow computation, i. e,, static, quasi-dynamic and dynamic methods, are proposed and introduced at length in this paper according to the calculation of unbalanced power. Four methods are applied to distribution of unbalanced power among slack machines, in which power limitations of each machine are considered. Finally, IEEE 14-bus standard system is studied with the proposed methods. Results show that the methods are valid and feasible.