基于故障全景信息的电力系统暂态稳定分析方法  

Transient stability analysis for a power system based on fault panoramic information

作　　者：王增平[1] 朱劭璇 王彤[1] 刘九良 秦红霞[2] WANG Zengping;ZHU Shaoxuan;WANG Tong;LIU Jiuliang;QIN Hongxia(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,Beijing 102206,China;Beijing Sifang Automation Co.,Ltd.,Beijing 100085,China)

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206 [2]北京四方继保自动化股份有限公司,北京100085

出　　处：《电力系统保护与控制》2020年第15期34-42,共9页Power System Protection and Control

基　　金：国家自然科学基金重点项目资助(51637005);国家重点研发计划智能电网技术与装备重点专项资助(2016YFB0900604);国家电网有限公司科技项目资助(SGBJDK00KJJS1900088)。

摘　　要：为了准确判断电力系统在故障后的暂态稳定状态,提出一种基于故障全景信息的电力系统暂态稳定分析方法。首先对影响系统暂态稳定的因素进行了分析,构建了以故障时间、故障位置、故障类型及接地电阻等信息为要素的故障全景信息。然后通过两次收缩系统导纳矩阵将故障全景信息融合到最终导纳阵中,从理论上推导了故障全景信息对发电机电磁功率的影响。在此基础上利用扩展等面积法形成不同故障场景下系统暂态稳定裕度的三维曲面,通过提取该曲面与零裕度平面的交线得到系统的暂态稳定边界。最后,分别利用IEEE 3机9节点系统和新英格兰10机39节点系统进行了仿真验证。结果表明,所提方法有利于提高系统在各种类型故障下暂态稳定判断的准确度。In order to accurately judge the transient stability state of a power system after a fault, a power system transient stability analysis method based on fault panoramic information is proposed. First, the factors affecting the system transient stability are analyzed, and the fault panoramic information is constructed. This information includes fault time, fault location, fault type and transition resistance. Then, the fault panoramic information is input into the final admittance matrix through a two shrinkage systems admittance matrix. The extended equal area rule is used to form a three-dimensional surface of the system transient stability margin in different fault scenarios. The transient stability boundary of the system is obtained by extracting the intersection line between the surface and the zero margin surface. Finally, the IEEE 3-machine 39-bus and New England 10-machine 39-bus systems are used as test systems for simulation. The results show that this method can improve the accuracy of transient stability assessment considering the fault panoramic information under different faults.

关 键 词：暂态稳定 故障全景信息 故障位置 接地电阻 收缩矩阵 

分 类 号：TM712[电气工程—电力系统及自动化]