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Effect of Distribution Generators on Stability in a Limited Bus Power Grid System
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作者 Nader Barsoum Christoper Bin Asok +1 位作者 David Ting Szu Kwong Clifford Gan Thien Kit 《Journal of Power and Energy Engineering》 2017年第9期74-91,共18页
It has been recognized recently that when injecting renewable energy source power to a load bus which connected to a distributed feeder in a power grid system, a stability problem occurs particularly when having high ... It has been recognized recently that when injecting renewable energy source power to a load bus which connected to a distributed feeder in a power grid system, a stability problem occurs particularly when having high fault duties that exceeding the circuit breaker ratings at some substations. In this paper an analysis of power flow, short circuit, stability and protection is given in detail to an example of limited 7-bus power grid system. Comparison is illustrated between power grid with and without distributed generators regarding bus voltages, fault currents, critical power angles, selected current transformers and over current relay settings in each bus. 展开更多
关键词 power Grid BUS VOLTAGES fault CURRENTS CRITICAL angle CRITICAL clearing time Over Current Relay Setting
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根据轨迹计算故障切除时间灵敏度的方法 被引量:4
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作者 安军 穆钢 邹建林 《中国电机工程学报》 EI CSCD 北大核心 2014年第10期1618-1623,共6页
提出一种仅由角速度来计算功角对故障切除时间灵敏度(sensitivity of power angle to fault clearing time,SPAFCT)的方法。通过对不同详略程度发电机模型的分析,导出SPAFCT与角速度轨迹之间的关系,由此可实现根据轨迹计算SPAFCT。研究... 提出一种仅由角速度来计算功角对故障切除时间灵敏度(sensitivity of power angle to fault clearing time,SPAFCT)的方法。通过对不同详略程度发电机模型的分析,导出SPAFCT与角速度轨迹之间的关系,由此可实现根据轨迹计算SPAFCT。研究表明,SPAFCT与角速度轨迹之间的关系不随模型详略程度(模型阶数)而改变,说明在由角速度轨迹计算SPAFCT时不会受到系统模型参数误差的影响。单机系统和10机39节点系统的算例表明,所提方法具有较高的计算精度且计算简便。算例还表明SPAFCT中蕴含了丰富的电力系统暂态稳定裕度的信息。 展开更多
关键词 数值仿真 轨迹灵敏度 故障切除时间灵敏度 卷积法 轨迹
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