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1.教育部海上风电技术工程研究中心(上海电力大学),上海市 200090
2.国家电网有限公司华中分部,湖北省武汉市 430077
3.国网湖南省电力有限公司电力科学研究院,湖南省长沙市 410208
赵晋泉(1972—),男,通信作者,博士,教授,博士生导师,主要研究方向:电压稳定与控制、电力系统优化运行、电力市场。E-mail:zhaojinquan@shiep.edu.cn
汤奕(1998—),男,硕士研究生,主要研究方向:电力系统电压稳定分析。E-mail:rgty0121@163.com
党杰(1981—),女,博士,教授级高级工程师,主要研究方向:电力系统稳定分析与控制、网源协调、新能源并网。E-mail:dangchunqiu@163.com
收稿:2023-12-10,
修回:2024-04-02,
网络出版:2024-07-15,
纸质出版:2024-08-25
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赵晋泉,汤奕,党杰等.计及高比例新能源多种控制方式及运行约束的连续潮流[J].电力系统自动化,2024,48(16):123-131.
ZHAO Jinquan,TANG Yi,DANG Jie,et al.Continuous Power Flow Considering Multiple Control Modes and Operational Constraints of High Proportion of Renewable Energy[J].Automation of Electric Power Systems,2024,48(16):123-131.
赵晋泉,汤奕,党杰等.计及高比例新能源多种控制方式及运行约束的连续潮流[J].电力系统自动化,2024,48(16):123-131. DOI: 10.7500/AEPS20231210002.
ZHAO Jinquan,TANG Yi,DANG Jie,et al.Continuous Power Flow Considering Multiple Control Modes and Operational Constraints of High Proportion of Renewable Energy[J].Automation of Electric Power Systems,2024,48(16):123-131. DOI: 10.7500/AEPS20231210002.
高比例新能源电网的电压稳定问题突出,连续潮流是电压稳定分析的重要工具。现有含电压源换流器(VSC)电源电网的连续潮流未充分考虑VSC的多种控制方式以及运行约束,导致电压稳定裕度计算的准确性不足。文中提出同时计及新能源并网VSC的输出电流约束和内电势约束,以及考虑构网型新能源恒电压控制、无功功率-电压下垂控制和跟网型新能源恒无功控制的连续潮流模型和计算方法,给出了由约束导致的控制方式切换逻辑和分岔点类型识别方法。通过改造的IEEE 39节点系统算例结果表明,所提模型与算法提升了传统连续潮流方法对高比例新能源电网静态电压稳定分析的适用性。
The voltage stability problem of power grids with high proportion of renewable energy is prominent
and continuous power flow is an important tool for voltage stability analysis. The current continuous power flow of power grids with voltage source converter (VSC) power supply does not fully consider the various control modes and operational constraints of the VSC
resulting in insufficient accuracy of voltage stability margin calculation. In this paper
a continuous power flow model and calculation method considering the output current constraint and internal potential constraint of the VSC with renewable energy integration
constant voltage control and reactive power-voltage droop control of grid-forming renewable energy and constant reactive power control of grid-following renewable energy are proposed
and the switching logic of control mode and bifurcation point type identification method caused by constraints are given. The results of a case with the modified IEEE 39-bus system show that the proposed model and algorithm improve the applicability of the traditional continuous power flow method to the static voltage stability analysis of power grids with high proportion of renewable energy.
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