| 具备LVRT能力的光伏接入配网对重合闸的影响及对策 |
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| 引用本文： | 李育强,王志文,王维庆,晁 勤. 具备LVRT能力的光伏接入配网对重合闸的影响及对策[J]. 电力系统保护与控制, 2016, 44(15): 61-67 |
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| 作者姓名： | 李育强 王志文 王维庆 晁 勤 |
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| 作者单位： | 新疆大学电气工程学院，新疆 乌鲁木齐830047,清华大学电机系，北京 100084,新疆大学电气工程学院，新疆 乌鲁木齐830047,新疆大学电气工程学院，新疆 乌鲁木齐830047 |
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| 基金项目： | 国家自然科学基金(51367017，51267019) |
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| 摘 要： | 在实现光伏电站低电压穿越(Low Voltage Ride Through，LVRT)的基础上，分析了光伏电站接入配电网LVRT对前加速自动重合闸的影响。根据故障发生的位置不同，基于时域分析对LVRT和前加速自动重合闸的延时进行整定，提出了光伏电站LVRT与前加速自动重合闸的配合方案。该方法能够解决前加速重合闸重合时间与LVRT时限不匹配，导致并网点电压二次跌落和瞬时性故障发展成为永久性故障的问题。通过在电磁暂态仿真软件(Power Systems Computer Aided Design，PSCAD)中建立仿真模型，在10 kV配电网中验证了所提方法的有效性和正确性。
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| 关 键 词： | LVRT；光伏电站；配电网；前加速自动重合闸；PSCAD |
| 收稿时间： | 2015-08-25 |
| 修稿时间： | 2015-11-24 |
Influence of PV with LVRT capability access to distribution network on automatic reclosing and its countermeasures |
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| LI Yuqiang,WANG Zhiwen,WANG Weiqing and CHAO Qin. Influence of PV with LVRT capability access to distribution network on automatic reclosing and its countermeasures[J]. Power System Protection and Control, 2016, 44(15): 61-67 |
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| Authors: | LI Yuqiang WANG Zhiwen WANG Weiqing CHAO Qin |
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| Affiliation: | School of Electrical Engineering, Xinjiang University, Urumqi 830047, China,Dept of Electrical Engineering, Tsinghua University, Beijing 100084, China,School of Electrical Engineering, Xinjiang University, Urumqi 830047, China and School of Electrical Engineering, Xinjiang University, Urumqi 830047, China |
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| Abstract: | On the basis of realizing the function of LVRT in photovoltaic power station, effect of LVRT pre-accelerating automatic reclosing is analyzed when PV plants access to the distribution network. According to the different fault location, the LVRT and pre-accelerating automatic reclosing delay setting based on time-domain analysis, the cooperation scheme of LVRT and the pre-accelerating automatic reclosing is proposed. This method can solve the problem that the voltage drop of second times and the transient fault will develop into a permanent fault due to the coincidence of the pre-accelerating automatic reclosing and the LVRT time does not match. A simulation model is established in PSCAD, the validity and correctness of the proposed method are verified by the 10 kV distribution network. This work is supported by National Natural Science Foundation of China (No.51367017 and No.51267019). |
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| Keywords: | LVRT photovoltaic power station distribution network pre-accelerating automatic reclosing PSCAD |
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