| 电力系统中采用全县形变压器所引起的谐波 |
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| 引用本文： | 刘卫东,兰之达,刘中岳,陈珩. 电力系统中采用全县形变压器所引起的谐波[J]. 东南大学学报(自然科学版), 1993, 0(2) |
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| 作者姓名： | 刘卫东 兰之达 刘中岳 陈珩 |
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| 作者单位： | 东南大学电气工程系，上海电力学院，东南大学电气工程系，东南大学电气工程系 |
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| 摘 要： | 为深入研究全星形变压器在电力系统中可能引起谐波电流、电压增大的问题,文中建立了全星形变压器模型,并采用半隐式Rosenbrock-Calahan法和四阶显式Runge-Kutta法交替使用的状态方程解的算法,以及快速富里叶变换的谐波分析(FFT)算法,编制了通用性强的系统仿真程序。本文对电力系统设计和运行有一定的参考价值。
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| 关 键 词： | 变压器 数字仿真 模型 饱和 非线性 谐波 |
Harmonics Caused by Installation of All-Star Connected Transformers in Power System |
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| Liu Weidong,Lan Zhida,Liu Zhongyue,Chen Heng. Harmonics Caused by Installation of All-Star Connected Transformers in Power System[J]. Journal of Southeast University(Natural Science Edition), 1993, 0(2) |
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| Authors: | Liu Weidong Lan Zhida Liu Zhongyue Chen Heng |
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| Affiliation: | Liu Weidong;Lan Zhida;Liu Zhongyue;Chen Heng Department of Electrical Engineering Shanghai Institute of Electric Power Daprtment of Electrital Engineering |
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| Abstract: | In order to investigate the current and voltage harmonics caused by the installation of all-star connected transformers in power system, a nonlinear model of such a kind of transformer as well as a simulation program using both semi-implicit and explicit Runge-Kutta methods together with a Fast Fourier Transformation algorithm are developed in this paper. With this program, the steady-state and transient-state performances of two sample systems are studied. It is found: a) with the installation of all-star transformers, the 3rd or 5th harmonic in power system increases during its normal operation; b) but such a phenomenon is not very apparent during its transient period, which means there is not any danger of relay malfunctioning due to the adoption of all-star connected transformers. |
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| Keywords: | transformer digital simulation model saturation non-linearity harmonics |
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