| 引用本文: | 路染妮,王钰洁,杜先君.大规模光伏电站中箱式变电站对光伏组件的影响分析[J].电力系统保护与控制,2017,45(20):123-128.[点击复制] |
| LU Ranni,WANG Yujie,DU Xianjun.Effects analysis of box-type substation on photovoltaic modules in large-scale photovoltaic power station[J].Power System Protection and Control,2017,45(20):123-128[点击复制] |
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| 摘要: |
| 随着全球能源紧缺,大规模光伏电站越来越成为新能源发电的重要形式之一。大规模光伏发电常采用箱式变电站作为将光伏逆变器出口的低压交流电升为高压电的升压设备。分析了箱式变电站中普遍使用的双分裂绕组变压器对光伏电池的影响。提出了通过减小光伏电池对地电压波动来减小对地回路电流的结论。并得出双分裂变压器两个低压侧绕组存在耦合，引起光伏逆变器低压绕组中心点电压同步波动，从而电池组件产生噪音的结论。最后通过仿真验证上述理论分析的可行性和有效性。 |
| 关键词: 光伏发电 箱式变电站 光伏逆变器 回路电流 组件噪音 |
| DOI：10.7667/PSPC161644 |
| 投稿时间：2016-10-02修订日期：2017-01-16 |
| 基金项目:甘肃省自然科学基金项目(1506RJZA104) |
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| Effects analysis of box-type substation on photovoltaic modules in large-scale photovoltaic power station |
| LU Ranni,WANG Yujie,DU Xianjun |
| (Xi’an Aeronautical Polytechnic Institute, Xi’an 710089, China;School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China;College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China) |
| Abstract: |
| Because of the vast shortage of global energy, the large-scale photovoltaic (PV) power generation has become one of the important new energy generations. Large-scale PV power generation often uses box-type substation as boosting device of raising the low-voltage alternating current of PV inverter outlet to high-voltage current. The impact of box-type substation double split-winding transformer commonly used in box-type substation on PV modules is analyzed. The conclusion that decreasing PV battery ground-to-ground voltage fluctuations can reduce the ground loop current is researched. It researches that there is a coupling relationship between the windings of two low-voltage sides of double split transformer, which causes the central point voltage synchronous fluctuations of PV inverter low-voltage windings, thereby results in battery modules noise. Finally, the feasibility and effectiveness of the above theoretical analysis are verified by simulation. This work is supported by Natural Science Foundation of Gansu Province (No. 1506RJZA104). |
| Key words: PV power generation box-type substation PV inverter loop current modules noise |
