考虑风速差异的风电场减载方案与一次调频策略

doi:10.12204/j.issn.1000-7229.2022.07.016

电力建设 ›› 2022, Vol. 43 ›› Issue (7): 139-148.doi: 10.12204/j.issn.1000-7229.2022.07.016

• 新能源发电 • 上一篇

考虑风速差异的风电场减载方案与一次调频策略

何廷一¹, 孙领²(), 李胜男¹, 陈亦平³, 李崇涛², 王晨光²

1.云南电网有限责任公司电力科学研究院,昆明市 650217
2.西安交通大学电气工程学院,西安市 710049
3.中国南方电网电力调度控制中心,广州市 510623

收稿日期:2021-12-08 出版日期:2022-07-01 发布日期:2022-06-30
通讯作者: 孙领 E-mail:2992091977@qq.com
作者简介:何廷一(1987),男,硕士,高级工程师,主要研究方向为系统分析、机网协调;
李胜男(1971),女,硕士,高级工程师,主要研究方向为电力系统稳定分析与控制、继电保护等;
陈亦平(1978),男,博士,教授级高级工程师,主要研究方向为电力系统运行与控制;
李崇涛(1983),男,博士,副教授,主要研究方向为电力系统稳定分析与控制;
王晨光(1996),男,硕士研究生,主要研究方向为电力系统频率稳定分析与控制。
基金资助:
国家自然科学基金面上项目(51977167);云南电网公司科技项目(YNKJXM20191240)

Research on Deloading Scheme and Primary Frequency Regulation Strategy of Wind Farm Considering Wind Speed Difference

HE Tinyi¹, SUN Ling²(), LI Shengnan¹, CHEN Yiping³, LI Chongtao², WANG Chenguang²

1. Electric Power Research Institute of Yunnan Power Grid Co., Ltd., Kunming 650217, China
2. School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
3. Dispatching and Control Center of China Southern Power Grid, Guangzhou 510623, China

Received:2021-12-08 Online:2022-07-01 Published:2022-06-30
Contact: SUN Ling E-mail:2992091977@qq.com
Supported by:
National Natural Science Foundation of China(51977167);Scientific and Technological Project of Yunnan Power Grid Co., Ltd.(YNKJXM20191240)

摘要/Abstract

摘要：

风电的大规模并网给电力系统带来了惯量降低和一次调频能力不足等问题,可减载运行且具备调频功能的风电场可有效应对该问题。为此,提出了一种风电场减载方案以及相应的一次调频策略。首先,介绍了综合惯性控制和桨距角控制的原理,并分析了风电场减载运行的必要性。然后,研究了不同风速下风机减载能力的差异性并制定了风电场内减载功率分配方案,根据制定的减载方案,提出了相应的一次调频策略,以充分利用风电场的调频能力并避免频率的二次跌落。最后,基于Matlab/Simulink搭建了仿真系统模型,仿真结果表明所述减载方案和调频策略可以合理分配减载功率并提升风电场的调频效果。

关键词: 减载能力, 功率分配, 一次调频, 综合惯性控制, 桨距角控制

Abstract:

The large-scale wind power integration brings some problems such as the reduction of inertia and the shortage of primary frequency-regulation capability to the power system. Wind farms with deloading operation and frequency-regulation function could effectively deal with these problems. Therefore, a deloading scheme and the corresponding primary frequency regulation strategy of wind farm are proposed. Firstly, the principle of integrated inertia control and pitch-angle control is introduced, and the necessity of deloading operation of wind farm is analyzed. Then the difference of deloading capability of wind turbines with different wind speeds is studied and the deloading power distribution scheme of wind farm is formulated. Furthermore, according to the deloading power distribution scheme, the corresponding primary frequency regulation strategy is proposed to make full use of the frequency regulation capability of wind farm and avoid the secondary frequency drop. The simulation system model is built based on Matlab/Simulink, and the simulation results show that the deloading scheme and frequency regulation strategy could reasonably distribute the deloading power and improve the frequency regulation effect of wind farm.

Key words: deloading capability, power distribution, primary frequency regulation, integrated inertia control, pitch-angle control

中图分类号:

TM614

何廷一, 孙领, 李胜男, 陈亦平, 李崇涛, 王晨光. 考虑风速差异的风电场减载方案与一次调频策略[J]. 电力建设, 2022, 43(7): 139-148.

HE Tinyi, SUN Ling, LI Shengnan, CHEN Yiping, LI Chongtao, WANG Chenguang. Research on Deloading Scheme and Primary Frequency Regulation Strategy of Wind Farm Considering Wind Speed Difference[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(7): 139-148.

图/表 14

图1 风机功率曲线

Fig.1 Power curve of wind turbine

图2 桨距角控制原理图

Fig.2 Schematic diagram of pitch-angle control

图3 超速减载原理图

Fig.3 Schematic diagram of deloading operation by over-speed control

图4 不同风速下单台风机最大可超速减载功率

Fig.4 Maximum deloading power of wind turbines with different wind speeds by over-speed control

图5 变桨距角减载原理图

Fig.5 Schematic diagram of deloading operation by pitch-angle control

图6 风机功率变化量曲线

Fig.6 Power variation curve of wind turbine

图7 风电场减载阶段和调频阶段控制流程图

Fig.7 Control flow diagram of wind farm deloading stage and frequency regulation stage

图8 仿真系统模型

Fig.8 Simulation system model

表1 风电场内风机信息(场景1)

Table 1 Wind turbine information in the wind farm(scenario 1)

表2 风电场内风机减载数据

Table 2 Wind turbine deloading data in the wind farm

图9 场景1中不同控制策略下的仿真结果

Fig.9 Simulation results under different control strategies in scenario 1

表3 风电场内风机信息(场景2)

Table 3 Wind turbine information in the wind farm (scenario 2)

图10 场景2中不同控制策略下的仿真结果

Fig.10 Simulation results under different control strategies in scenario 2

图11 波动风速下的仿真结果

Fig.11 Simulation results under fluctuant wind speeds

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考虑风速差异的风电场减载方案与一次调频策略

Research on Deloading Scheme and Primary Frequency Regulation Strategy of Wind Farm Considering Wind Speed Difference

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