| 引用本文: | 周宁,雷 响,荆骁睿,等.一种含高渗透率分布式电源配电网自适应过电流保护方案[J].电力系统保护与控制,2016,44(22):24-31. |
| ZHOU Ning,LEI Xiang,JING Xiaorui,et al.Adaptive over-current protection scheme for distribution network with high penetration rate of DG[J].Power System Protection and Control,2016,44(22):24-31 |
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| 摘要: |
| 针对分布式电源接入对配电网线路电流保护的影响，提出了一种适用于高渗透率分布式电源接入配电网的自适应过电流保护新方法。该方法利用故障分量网络，对分布式电源背侧等效阻抗进行计算，将其融入到配电网过电流保护整定计算中。给出了实时的主保护和后备保护的整定值，从而构建自适应过电流保护方案。大量的仿真表明，与传统过流保护相比，所提出的自适应过电流保护可以解决由于分布式电源接入配电网，过流保护的保护范围超越等问题，具有良好的应用前景。 |
| 关键词: 分布式电源 自适应电流保护 故障分量 高渗透率 等效阻抗 |
| DOI：10.7667/PSPC151866 |
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| Adaptive over-current protection scheme for distribution network with high penetration rate of DG |
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ZHOU Ning1,LEI Xiang2,JING Xiaorui1,HE Xiang1,JIAO Zaibin2
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(1. Henan Electric Power Company Electric Power Research Institute, Zhengzhou 450052, China;
;2. School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China)
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| Abstract: |
| This paper presents a new adaptive overcurrent protection for distribution network with high penetration rate of DG, on the basis of the impact of distributed generation connecting to the distribution network. According to fault component network, the equivalent impedance of DG’s back side is calculated, which is integrated with distribution over current protection setting calculation. The main protection and back-up protection setting values are calculated, and the adaptive overcurrent protection scheme is constructed. Simulation results show that, compared with conventional overcurrent protection, the proposed adaptive overcurrent protection can solve the problem of protection scope overreach of overcurrent protection due to DG access to distribution network, so it has a good prospect of engineering application. |
| Key words: DG adaptive overcurrent protection fault component high penetration rate equivalent impedance |
