摘要
孤岛微电网在为偏远地区供电、提高用户可靠性等方面提供了有效的解决途径。针对孤岛微电网缺乏主网电源支撑、频率及电压波动大的问题,提出一种基于时序模拟的频率及电压质量评估方法。利用各类DG的出力曲线以及负荷曲线,根据采样点逐点进行孤岛微电网潮流计算,获取系统频率、电压的变化曲线及概率分布情况;利用频率及电压偏差指标评估孤岛微电网的频率及电压质量。以Benchmark 0.4 k V低压微电网作为算例系统,验证了所提方法的有效性。
The islanded microgrids provide an effective solution for power supply in remote areas and improvement of power consumption reliability of users. Aiming at shortness of main network power support and the frequency and voltage fluctuation, this paper proposes a method to evaluate the frequency and voltage quality based on time series simulation. DG output curves and load curves are used to calculate the power flow in each sampling point to conclude system frequency, voltage deviation curve and probability distribution. Frequency and voltage deviation indicators are used to evaluate frequency and voltage quality of islanded microgrids. Benchmark 0.4 k V low voltage microgrid is used as an example to verify the effectiveness of the proposed method.
作者
肖少华
朱庆龙
杨家豪
XIAO Shaohua1, ZHU Qinglong2, YA NG Jiahao3(1. State Grid Jiaxing Electric Power Supply Company, Jiaxing Zhejiang 314000, China; 2. China Northeast Architectural Design ＆ Research Institute Co., Ltd., Xiamen Fujian 361000, 3. Xiamen University Tan Kah Kee College, Xiamen Fujian 361000, Chin)
出处
《浙江电力》
2018年第4期42-46,共5页
Zhejiang Electric Power
关键词
孤岛微电网
时序模拟
频率质量
电压质量
islanded microgrids
time series simulation
frequency quality
voltage quality
