基于风速预测的风储电压质量调节系统

发布时间：2018-04-18 14:52

本文选题：风电系统 + 超级电容器　；参考：《电网技术》2016年05期

【摘要】：随着风能在电力系统中的渗透率不断提高,风电功率的随机波动对电力系统的影响日益严重,尤其是在电压质量方面。提出了一种基于超级电容器-蓄电池混合储能的电压质量调节系统,可以平抑电压暂降、电压波动等。首先通过自回归滑动平均模型预测风电场1 min内的风速变化,作为仿真风速来源,同时模拟短期内风电场的电压质量情况。然后,针对电压暂降和电压波动等电能质量问题,建立了以超级电容器-蓄电池混合储能为基础的补偿调节装置模型,分析了风电场出力波动量与储能容量配置间的关系,并设计了相应的控制环节。最后,利用仿真软件PSCAD/EMTDC对系统进行了仿真,验证了该系统可以有效抑制电压暂降,且对电压波动也有一定的改善效果。
[Abstract]:With the increasing permeability of wind energy in power system, the random fluctuation of wind power has more and more serious influence on power system, especially in the aspect of voltage quality.A voltage quality regulation system based on supercapacitor-battery hybrid energy storage system is proposed, which can stabilize voltage sag and voltage fluctuation.The wind speed variation in 1 min wind farm is predicted by the autoregressive moving average model, which is used as the source of the simulation wind speed, and the voltage quality of the wind farm is simulated in the short term at the same time.Then, aiming at the power quality problems, such as voltage sag and voltage fluctuation, a compensation and regulation device model based on supercapacitor-battery hybrid energy storage is established, and the relationship between wind farm output fluctuation and energy storage capacity configuration is analyzed.The corresponding control links are designed.Finally, the simulation software PSCAD/EMTDC is used to simulate the system, which proves that the system can effectively restrain voltage sag and improve the voltage fluctuation.
【作者单位】：电力传输与功率变换控制教育部重点实验室(上海交通大学);上海交通大学化学化工学院;
【基金】：国家重点基础研究发展计划项目(973项目)(2014CB23903)~~
【分类号】：TM614;TM714.2

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