风电机组惯量支撑与一次调频综合控制策略

doi:10.16180/j.cnki.issn1007-7820.2023.05.002

摘要/Abstract

摘要：

针对大规模风电接入电网导致系统惯量降低、调频能力不足的问题,文中提出一种风电机组惯量支撑与一次调频综合控制策略方案。该方案基于风电机组浆距角特性来整定风机减载控制,预留风电机组调频所需的备用容量,进一步解决减载模式下电网频率变化与虚拟转动惯量之间的结合问题。此外,再计及风电机组转速保护来整定静调差系数,并与惯量支撑控制相结合,以实现风电机组综合调频控制策略。在MATLAB/Simulink中搭建含风电场的联合仿真模型,其结果表明风电机组可快速为电网提供虚拟转动惯量支撑,降低初期电网频率扰动的变化率,并按照整定的静调差系数调节输出功率,提高了风电接入电网的频率稳定性,验证了文中所提控制策略的合理性。

关键词: 一次调频, 惯量支撑, 减载备用, 综合控制策略, 风力发电机组, 最大功率跟踪曲线, 频率稳定, 浆距角, 调差系数

Abstract:

In response to the problem of reduced system inertia and insufficient frequency regulation capacity due to large-scale wind power connection to the grid, an integrated control strategy scheme for wind turbine inertia support and primary frequency regulation is proposed. In this scheme, the load reduction control of wind turbine is adjusted based on the characteristics of wind turbine slurry distance angle, and the reserve capacity required for wind turbine frequency modulation is reserved, which further solves the combination problem between the frequency change of the power grid and the virtual moment of inertia in the load reduction mode. In addition, the wind turbine speed protection is considered to set the static adjustment coefficient, and combined with the inertia support control, to achieve the wind turbine integrated frequency control strategy. The co-simulation model including wind farm is built in MATLAB/Simulink platform. The results show that the wind turbine can quickly provide virtual rotational inertia support to the grid, reduce the rate of change of the initial grid frequency perturbation, and regulate the output power according to the adjusted static regulation differential coefficients to improve the frequency stability of the wind power connected to the grid, which verifies the rationality of the proposed control strategy.

Key words: primary frequency regulation, inertia support, load shedding standby, integrated control strategy, wind power generation, maximum power tracking curve, frequency stability, pitch angle, adjustment coefficient

中图分类号:

TP271+.4

朱家文,陈卓,刘人志,刘柏霖,陈湘萍. 风电机组惯量支撑与一次调频综合控制策略[J]. 电子科技, 2023, 36(5): 9-15.

ZHU Jiawen,CHEN Zhuo,LIU Renzhi,LIU Bolin,CHEN Xiangping. Integrated Control Strategy of Wind Turbine Inertia Support and Primary Frequency Regulation[J]. Electronic Science and Technology, 2023, 36(5): 9-15.

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