引用本文: | 王增平,朱劭璇,王 彤,等.基于故障全景信息的电力系统暂态稳定分析方法[J].电力系统保护与控制,2020,48(15):34-42.[点击复制] |
WANG Zengping,ZHU Shaoxuan,WANG Tong,et al.Transient stability analysis for a power system based on fault panoramic information[J].Power System Protection and Control,2020,48(15):34-42[点击复制] |
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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。 |
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 |
DOI:DOI: 10.19783/j.cnki.pspc.191171 |
投稿时间:2019-09-26修订日期:2020-01-16 |
基金项目: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) |
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Transient stability analysis for a power system based on fault panoramic information |
WANG Zengping,ZHU Shaoxuan,WANG Tong,LIU Jiuliang,QIN Hongxia |
(1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, Beijing 102206, China;
2. Beijing Sifang Automation Co., Ltd., Beijing 100085, China) |
Abstract: |
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.
This work is supported by the Key Project of National Natural Science Foundation of China (No. 51637005), Key Project of Smart Grid Technology and Equipment of National Key Research and Development Plan of China (No. 2016YFB0900604), and Science and Technology Project of State Grid Corporation of China (No. SGBJDK00KJJS1900088). |
Key words: transient stability fault panoramic information fault location transition resistance contraction matrix |