风电调频能力的潜力分析

Potential Analysis of Frequency Regulation Ability of Wind Power in the View of Energy

随着风电并网装机容量的增加,充分挖掘风电调频潜力对提高电网稳定性和电网吸纳风电能力至关重要。通过分析134台风电机组的风电场运行数据,从短时间能量释放的角度,在风电火电协同场景下开展风电调频能力的分析。结果表明:火电调频具有0~30 s能量释放不及时的缺点,燃料投入的可控使其具有持续调频的优点;风电调频能量随输出功率和机组投运台数的增加而增加,风电调频具有0~30 s快速响应的特点;风电0~30 s调频能量释放潜力涵盖了电力系统小幅频率波动和大频差扰动调节时间尺度,能够弥补火电0~30 s能量释放不及时的缺点,降低大频差扰动频率下降幅度;风电火电协同运行场景下,风电调频能量随供电率的增加而增加,其0~30 s调频能量大于火电,协调运行可优势互补,具有较大的调频潜力。

With the increase of wind power capacity,it is important to develop the potential of wind power for frequency regulation,which can improve the stability of power system and the ability of power system to absorb wind power.From the perspective of short-time energy release,this study analyzed the frequency regulation ability of wind power under the scenario of wind-thermal operation based on the operating data of wind power plant 134 wind turbines.Results show that the thermal power has the disadvantages of insufficient energy supply within 0~30 s,but it has the advantages of continuous energy supply for frequency regulation due to controllable fuel supply.The frequency regulation energy of wind power increases with the increase of output power and the number of operation wind turbines.The wind power can response the frequency variation rapidly within 0~30 s.The 0~30 s energy release potential of wind power covers the adjustment time scale of small amplitude frequency fluctuation and large frequency difference of power system,which can make up for the untimely thermal power energy release within 0~30 s and reduce the decrease of frequency.Under the scene of wind-thermal operation,the frequency regulation energy of wind power increases rapidly with the increase of power supply rate,and the 0~30 s frequency regulation energy is larger than thermal power.The wind-thermal operation can complement each other’s advantages and has great potential of frequency regulation.