| 蓄电池SOC限值下的微电网协调控制策略研究 |
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| 引用本文： | 吴振奎,刘旭峰,李川,杨旭生.蓄电池SOC限值下的微电网协调控制策略研究[J].电测与仪表,2015,52(22). |
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| 作者姓名： | 吴振奎 刘旭峰 李川 杨旭生 |
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| 作者单位： | 内蒙古科技大学信息工程学院,内蒙古科技大学信息工程学院,内蒙古科技大学信息工程学院,兰州理工大学电气工程与信息工程学院 |
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| 基金项目： | 多分布式电源微电网协调优化控制策略研究 |
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| 摘 要： | 微电网在孤岛模式中,由光伏阵列和储能电池并联构成的光伏逆变器作为V-f模式主控单元调节系统电压频率稳定,当光伏阵列输出功率不能满足系统需求且储能电池达到SOC限值时,逆变器不能保证系统稳定。针对此问题,本文在含光伏系统最大功率跟踪和储能电池充放电特性的系统中,提出了一种改进的V-f模式和P-Q模式控制算法,采用P-Q模式下的微燃机作为后备V-f模式调节单元,通过与光伏逆变器控制模式的切换解决了系统稳定性问题,同时在光伏阵列输出功率过剩的情况下提高了可再生能源的利用率。通过PSCAD/EMTDC软件仿真验证了其控制策略的有效性。
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| 关 键 词： | 微电网 储能电池 SOC 协调控制。 |
| 收稿时间： | 2014/9/26 0:00:00 |
| 修稿时间： | 2014/9/26 0:00:00 |
Coordinated Control Strategy in Microgrid with the limit value of Battery SOC |
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| WU Zhen-kui,LIU Xu-Feng,Li Chuan and YANG Xu-sheng.Coordinated Control Strategy in Microgrid with the limit value of Battery SOC[J].Electrical Measurement & Instrumentation,2015,52(22). |
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| Authors: | WU Zhen-kui LIU Xu-Feng Li Chuan and YANG Xu-sheng |
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| Affiliation: | Information Engineering School,Inner Mongolia University of Science and Technology,Inner Mongolia,Baotou,Information Engineering School,Inner Mongolia University of Science and Technology,Inner Mongolia,Baotou,Information Engineering School,Inner Mongolia University of Science and Technology,Inner Mongolia,Baotou,College of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou |
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| Abstract: | In an island mode of micro-grid , composed of photovoltaic array and storage battery in parallel connection, PV inverter in the V-f control model mainly adjust the frequency and voltage stability of the micro-grid system. When the output power of PV array can"t meet the demand of system and energy storage battery is confused by SOC limit, the inverter can"t satisfy the system stability.Aiming at this problem, based on the photo-voltaic maximum power tracking system and the characteristics of the energy storage battery charging and discharging system, the paper analyzes the improved V - f and P - Q model control algorithm, using P - Q model of micro gas turbine as back-up V - f model adjusting unit,and switching the photovoltaic inverter"s control mode to solve the problem of system stability. At the same time,the control strategy improve the utilization of renewable energy when the out power of PV array is surplus.The simulation verify the effectiveness of the control strategy by using PSCAD/EMTDC software. |
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| Keywords: | Micro-grid battery storage system SOC Coordination control strategy |
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