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1. 长沙理工大学电气与信息工程学院,湖南省 长沙市 410114
2. 国网湖南省电力有限公司经济技术研究院,湖南省 长沙市 410004
马瑞(1971—),男,通信作者,博士,教授,博士生导师,主要研究方向:电力系统分析与控制、能源互联网和大数据等。E-mail:marui818@126.com
刘振磊(1992—),男,硕士研究生,主要研究方向:电力系统运行与控制。E-mail:sdaulzhl@foxmail.com
贺平平(1995—),男,硕士研究生,主要研究方向:电力系统运行与控制。E-mail:1351452320@qq.com
收稿日期:2019-02-17,
修回日期:2019-09-13,
网络出版日期:2020-02-16,
纸质出版日期:2020-03-25
移动端阅览
马瑞,刘振磊,贺平平等.考虑源荷频率特性的含风电交直流系统概率连续潮流方法[J].电力系统自动化,2020,44(06):27-36.
MA Rui,LIU Zhenlei,HE Pingping,et al.Probabilistic Continuous Power Flow Method for AC/DC Systems with Wind Power Considering Frequency Characteristics of Source and Load[J].Automation of Electric Power Systems,2020,44(06):27-36.
马瑞,刘振磊,贺平平等.考虑源荷频率特性的含风电交直流系统概率连续潮流方法[J].电力系统自动化,2020,44(06):27-36. DOI: 10.7500/AEPS20190217002.
MA Rui,LIU Zhenlei,HE Pingping,et al.Probabilistic Continuous Power Flow Method for AC/DC Systems with Wind Power Considering Frequency Characteristics of Source and Load[J].Automation of Electric Power Systems,2020,44(06):27-36. DOI: 10.7500/AEPS20190217002.
针对传统连续潮流方法难以适应大规模风电接入交直流互联系统的实际情况,提出了一种含风电交直流系统概率连续潮流计算方法。该方法在兼顾常规机组调频特性和负荷电压/频率静特性基础上,进一步考虑风电出力随机性、直流控制方式和频率波动偏差约束,建立考虑电源调频和负荷电压/频率静特性的含风电交直流系统概率连续潮流方程;通过其修正方程的雅可比矩阵,推导能反映频率波动、风电出力和控制方式等因素的负荷裕度灵敏度指标;基于统一迭代法,结合蒙特卡洛方法和预估-校正方法获取系统
N
和
N-
1状态时多场景潮流解和负荷裕度。最后,修改的IEEE 39节点系统算例仿真结果验证了所提方法的正确性和有效性。
In view of the fact that the traditional continuous power flow method is difficult to adapt to the AC/DC interconnected systems with access of large-scale wind power
this paper proposes a probabilistic continuous power flow calculation method for AC/DC systems with wind power. Based on the frequency regulation characteristics of conventional units and the static characteristics of voltage and frequency of loads
the randomness of wind power output
the DC control mode and the frequency fluctuation deviation constraints are taken into account. Then this paper establishes the probabilistic continuous power flow equation of AC/DC systems with wind power considering the frequency regulation of power sources and static characteristics of voltage and frequency of loads. Based on the Jacobian matrix of the modified equation
the load margin sensitivity index reflecting the frequency fluctuation
wind power output and control mode is derived. The power flow solution and load margin in multiple scenarios of
N
and
N
-1 states are obtained by combining Monte Carlo method and predictor-corrector method. The correctness and validity of the proposed method are verified by simulation results of the modified IEEE 39-bus system.
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