电力设备检测实验室专用微电网接入结构设计及功率控制方法
发布时间：2019-02-12 20:12
【摘要】：针对传统微电网无法满足电能高质量领域的电源需求,以电力设备检测实验室的测试电源为研究案例,提出了串联型分布式电源单元(DG)的接入结构,同时为了减少功率分配误差并提高电压的稳定性,提出了功率因数/频率反下垂控制方法。研究结果表明:采用串联型的微电网接入结构以及反下垂控制方法,可以实现DG单元的有功和无功功率均分,减少功率分配误差,从而实现DG单元的电压波形同步,解决了DG单元电压相角不同造成的功率不匹配问题,同时提高了公共连接点(PCC)的电压幅值,保证了电源电压的稳定运行。通过研究发现,采用这种微电网接入结构以及功率控制方法可以为微电网系统提供精准功率控制、电压稳定的电源,该电源可以满足电力设备检测实验室的测试要求。
[Abstract]:In view of the fact that the traditional microgrid can not meet the power demand in the field of high power quality, a series distributed power unit (DG) access structure is proposed by taking the test power supply in the power equipment testing laboratory as a case study. In order to reduce the error of power distribution and improve the stability of voltage, a power factor / frequency backsag control method is proposed. The results show that the series microgrid access structure and the anti-droop control method can realize the equal distribution of active and reactive power of DG cells, reduce the power distribution error, and realize the synchronization of voltage waveform of DG cells. The problem of power mismatch caused by different voltage phase angle of DG cell is solved, and the voltage amplitude of common connection point (PCC) is increased, which ensures the stable operation of power supply voltage. Through the research, it is found that the microgrid access structure and power control method can provide accurate power control and voltage stable power supply for the microgrid system, and the power supply can meet the test requirements of the power equipment testing laboratory.
【作者单位】： 云南电网有限责任公司电力科学研究院;国网电力科学研究院;华中科技大学强电磁工程与新技术国家重点实验室;天津大学电气与自动化工程学院;
【基金】：云南电网公司科技项目(K YN2012 480)~~
【分类号】：TM727
[Abstract]:In view of the fact that the traditional microgrid can not meet the power demand in the field of high power quality, a series distributed power unit (DG) access structure is proposed by taking the test power supply in the power equipment testing laboratory as a case study. In order to reduce the error of power distribution and improve the stability of voltage, a power factor / frequency backsag control method is proposed. The results show that the series microgrid access structure and the anti-droop control method can realize the equal distribution of active and reactive power of DG cells, reduce the power distribution error, and realize the synchronization of voltage waveform of DG cells. The problem of power mismatch caused by different voltage phase angle of DG cell is solved, and the voltage amplitude of common connection point (PCC) is increased, which ensures the stable operation of power supply voltage. Through the research, it is found that the microgrid access structure and power control method can provide accurate power control and voltage stable power supply for the microgrid system, and the power supply can meet the test requirements of the power equipment testing laboratory.
【作者单位】： 云南电网有限责任公司电力科学研究院;国网电力科学研究院;华中科技大学强电磁工程与新技术国家重点实验室;天津大学电气与自动化工程学院;
【基金】：云南电网公司科技项目(K YN2012 480)~~
【分类号】：TM727
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