电力系统保护与控制2012，Vol.40Issue(16)：70-76,7.
一种适用于交直流互联系统电磁暂态仿真的动态等效方法
A dynamic equivalent method for electromagnetic transient simulation of AC/DC interconnected power system
杨福 1梁军 1牛庆达1
作者信息
- 1. 山东大学电气工程学院,山东 济南250061
- 折叠
摘要
Abstract
In the electromagnetic transient simulation of AC/DC interconnected power system, it is necessary to conduct a dynamic equivalent for the low voltage level (220 kV or below) AC power system, which can reduce the scale of power system and improve the simulation efficiency. This paper proposes a dynamic equivalent method for mid-low voltage level network in AC/DC interconnected power system. Based on reserving power flow and dynamic characteristics of backbone network before and after equivalence, the method constructs the structure of the equivalent node on the backbone network for reducing the low voltage level network. The determination of the parameter of the elements in the equivalent node structure is given. The computation of reducing network is simple. And there will not be negative resistance in the equivalent power system, so the equivalent network can be used in electromagnetic transient simulation directly. This method is applied to Shandong power grid. Through the comparison of power flow, short circuit current of buses on backbone network and transient behavior variations of power system pre and post the equivalence, it is proved that the proposed method is reasonable and effective.关键词
电磁暂态仿真/机电暂态仿真/动态等效/异步电动机/短路电流计算Key words
electromagnetic transient simulation/ electromechanical transient simulation/ dynamic equivalence/ induction motor/ short circuit current calculation分类
信息技术与安全科学引用本文复制引用
杨福,梁军,牛庆达..一种适用于交直流互联系统电磁暂态仿真的动态等效方法[J].电力系统保护与控制,2012,40(16):70-76,7.
