基于EDSA的电网并联谐振条件仿真

Tenth International Conference on Computer Modeling and Simulation (uksim 2008) Pub Date : 2008-04-01 DOI:10.1109/UKSIM.2008.134

K. Wadhwani

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引用次数: 1

摘要

本文讨论了功率因数校正(PFC)/无功补偿对电网并联谐振的影响。并联谐振可以使整个电网不稳定，因为THD(电压)可能上升到基波的26%(这几乎是谐波源产生的THD的7到8倍)，从而导致高度畸变的电波。这将导致UPS，变频驱动器和电池充电故障。保护系统可能因共振而失灵。各种电气设备的损耗会增加，导致设备发热，最终导致设备过早失效。在EDSA(电气设计软件)中建模了一个典型的电网，并模拟了并联谐振条件，分析了谐振对以下方面的影响:•电网中各母线的THD•带/不带PFC时的阻抗响应•各母线的波形失真•避免PFC引起的谐振的纠正措施

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Simulation of Parallel Resonance Condition in Electrical Network Using EDSA

This paper covers the effects of parallel resonance in the Electrical Network due to Power Factor correction (PFC)/VAR compensation. Parallel Resonance can make entire electrical network unstable as THD (voltage) may rise upto 26% of fundamental (which is nearly seven to eight times of THD produced by the harmonic source) resulting in highly distorted Electrical wave. This will result in misfiring in UPS, Variable Frequency Drives, and Battery Charges. The Protection system may mal-operate due to resonance. The losses in various electrical equipments will increase, which will result in heating and ultimately premature failure of equipments. A typical Electrical network was modeled in EDSA (Electrical design software) and parallel resonance condition was simulated to analyze the effect of resonance on following:• THD on various busses in the electrical network • Impedance response with/without the PFC • Distortion of waveform at various buses • Corrective measures to avoid resonance due to PFC

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Tenth International Conference on Computer Modeling and Simulation (uksim 2008)

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