基于源网电压差值法的220kV电厂电压曲线优化制定

发布时间：2018-05-03 14:22

  本文选题：源网 + 电压差值　； 参考：《电工技术学报》2017年13期

【摘要】：发电厂的电压控制是电网运行安全性和经济性的基础。本文以电网有功损耗最小为目标,分析了无功负荷在发电厂和电网之间最优分配方式,揭示了发电厂实现最优无功出力的影响因素,提出了反映电厂电压控制与系统调压需求相匹配的评价指标,即电厂高压母线与枢纽母线之间的源网电压差值。并通过分析影响该指标取值的变量,优化计算,从而获取电网在不同运行方式下电压差值的最优值;进而对不同运行方式下最优电压差值进行局部统一、分档差异化处理;最后结合枢纽母线电压的预测值,进行发电厂日电压控制曲线的优化制定。算例结果证明了该方法简单实用,而且无功优化效果好。
[Abstract]:The voltage control of power plant is the basis of power network operation safety and economy. Aiming at the minimum active power loss, the optimal distribution of reactive power load between power plant and power network is analyzed in this paper, and the influencing factors of optimal reactive power output in power plant are revealed. An evaluation index which reflects the matching of power plant voltage control and system voltage regulation is proposed, that is, the voltage difference between the high voltage bus and the hub bus of the power plant. By analyzing the variables that affect the value of the index and optimizing the calculation, the optimal value of the voltage difference of the power network under different operation modes is obtained, and then the optimal voltage difference under the different operation mode is locally unified, and the differential processing is done. Finally, the daily voltage control curve of power plant is optimized by combining with the forecast value of bus voltage. The example shows that the method is simple and practical, and the effect of reactive power optimization is good.
【作者单位】： 华南理工大学广东省绿色能源技术重点实验室;深圳供电局有限公司;
【基金】：国家自然科学基金资助项目(51377060)
【分类号】：TM62;TM761.12
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本文编号：1838857