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基于超级电容储能控制的双馈风电机组惯量与一次调频策略
作者:
作者单位:

分布式储能与微网河北省重点实验室(华北电力大学),河北省 保定市 071003

摘要:

双馈感应发电机在最大功率点跟踪控制下,发电机的输出功率难以响应电网频率波动,常规超速减载控制虽然可保留部分有功备用参与系统调频,但存在风电机组发电效益降低、转速调节范围减小及桨距角控制启动频繁等问题。为此,文中结合双馈感应发电机网侧变流器的控制特性,提出了基于超级电容储能控制的双馈风电机组惯量与一次调频策略。其中,虚拟惯量调节和一次频率调节都由超级电容控制实现,无须改变或增加风电机组额外附加控制,提高了单台风电机组的自稳性和抗扰性;根据实际超级电容模组的成本和充放电效率对储能单元容量进行优化配置。通过对比预留备用一次调频方案的经济性,表明所提方案具有较强的经济优势。最后,通过仿真实验表明其惯量支撑和一次频率调节能力及发电效益相较于常规一次频率控制具有明显提高。

关键词:

基金项目:

河北省自然科学基金资助项目(E2018502134 );国家电网公司科技项目(SGHEDK00DYJS1900061)。

通信作者:

崔森(1992—),男,通信作者,博士研究生,主要研究方向:风电机组控制技术。E-mail:cuisen@ncepu.edu.cn

作者简介:

颜湘武(1965—),男,博士,教授,博士生导师,主要研究方向:新能源电力系分析与控制、现代电力与变换、新型储能与节能等。E-mail:xiangwuyan@ncepu.edu.cn
宋子君(1994—),女,硕士研究生,主要研究方向:双馈风力发电系统建模及控制。E-mail:ZijunSong@ncepu.edu.cn


Inertia and Primary Frequency Regulation Strategy of Doubly-fed Wind Turbine Based on Super-capacitor Energy Storage Control
Author:
Affiliation:

Hebei Key Laboratory of Distributed Energy Storage and Microgrid (North China Electric Power University), Baoding 071003, China

Abstract:

Under the maximum power point tracking control of the doubly-fed induction generator (DFIG), the output power of DFIG is difficult to respond to grid frequency fluctuations. Although conventional overspeed load shedding control can retain active power reserve to participate in system frequency regualtion, there are some problems such as the reduction of power generation efficiency, the reduction of speed regulation range and the frequent start-up of pitch angle control. To this end, combined with the control characteristics of the grid-side converter of DFIG, a strategy of DFIG inertia and primary frequency regualtion is proposed based on super capacitor energy storage control. Both the virtual inertia and the primary frequency regualtion are realized by supercapacitor control and there is no need to change or increase the additional control of the wind turbines, which improves the disturbance resistance and self-stability of a single wind turbine. According to the actual cost of the supercapacitor module and charging/discharging efficiency, the capacity of the energy storage unit is optimized. Compared with the economics of the primary frequency regualtion scheme of active power reserve, the proposed scheme has strong economic advantages. Finally, the simulation experiments show that its inertia support, primary frequency regualtion capability and power generation efficiency are significantly improved compared with conventional primary frequency control.

Keywords:

Foundation:
This work is supported by Hebei Provincial Natural Science Foundation of China (No. E2018502134) and State Grid Corporation of China (No. SGHEDK00DYJS1900061).
引用本文
[1]颜湘武,崔森,宋子君,等.基于超级电容储能控制的双馈风电机组惯量与一次调频策略[J].电力系统自动化,2020,44(14):111-120. DOI:10.7500/AEPS20200120001.
YAN Xiangwu, CUI Sen, SONG Zijun, et al. Inertia and Primary Frequency Regulation Strategy of Doubly-fed Wind Turbine Based on Super-capacitor Energy Storage Control[J]. Automation of Electric Power Systems, 2020, 44(14):111-120. DOI:10.7500/AEPS20200120001.
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  • 收稿日期:2020-01-20
  • 最后修改日期:2020-03-12
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  • 在线发布日期: 2020-07-20
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