| 引用本文: | 李东东,杨银台,程云志,尹睿,林顺富,杨帆,边晓燕.基于虚拟相量直线的戴维南等值参数计算方法[J].电力自动化设备,2017,37(10): |
| LI Dongdong,YANG Yintai,CHENG Yunzhi,YIN Rui,LIN Shunfu,YANG Fan,BIAN Xiaoyan.Calculation method of Thevenin equivalent parameters based on virtual line in phasor space[J].Electric Power Automation Equipment,2017,37(10): |
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| 基于虚拟相量直线的戴维南等值参数计算方法 |
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李东东1,2, 杨银台1, 程云志3, 尹睿1, 林顺富1,2, 杨帆1,2, 边晓燕1,2
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1.上海电力学院 电气工程学院，上海 200090;2.上海高校高效电能应用工程研究中心，上海 200090;3.美国德州电力可靠性委员会，美国 泰勒 76574
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| 摘要: |
| 由于传统戴维南等值参数求取方法存在参数漂移等缺点，提出一种基于虚拟相量直线的戴维南等值参数识别方法。提出虚拟相量直线的概念，利用直线相交原理得出小扰动下电力系统的戴维南等值参数。为克服参数漂移和提高算法的收敛速度，利用阻抗轨迹圆法进行数据筛选。典型3机9节点系统的仿真结果表明，所提方法可以有效、准确地跟踪戴维南等值参数。 |
| 关键词: 参数识别 虚拟相量直线 戴维南等值 参数漂移 稳定性 |
| DOI：10.16081/j.issn.1006-6047.2017.10.020 |
| 分类号:TM761 |
| 基金项目:国家自然科学基金资助项目(51507100,51407114)；上海市科学技术委员会资助项目(15YF1404600,13DZ2251900,10DZ2273400)；上海市“曙光计划”资助项目(15SG50)；上海市人才发展资金资助项目(201365) |
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| Calculation method of Thevenin equivalent parameters based on virtual line in phasor space |
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LI Dongdong1,2, YANG Yintai1, CHENG Yunzhi3, YIN Rui1, LIN Shunfu1,2, YANG Fan1,2, BIAN Xiaoyan1,2
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1.College of Electrical Engineering, Shanghai University of Electric Power, Shanghai 200090, China;2.Shanghai Higher Institution Engineering Research Center of High Efficiency Electricity Application, Shanghai 200090, China;3.Electric Reliability Council of Texas, Taylor 76574, USA
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| Abstract: |
| Since the traditional calculation method of Thevenin equivalent parameters has the shortages, such as parameter drift, an identification method of Thevenin equivalent parameters based on virtual line in the phasor space is proposed. The concept of virtual line in the phasor space is proposed. The linear inter-section principle is adopted to derive the Thevenin equivalent parameters of power system with small disturbance. In order to overcome the parameter drift and improve the convergence speed of the algorithm, the impedance locus circle method is used for data screening. The simulative results of a typical 3-generator 9-bus system show that the proposed method can effectively and accurately track Thevenin equivalent parameters. |
| Key words: parameter identification virtual line in phasor space Thevenin equivalent parameter drift stability |
