摘要
考虑到新能源接入配电变压器后会出现失稳现象,为此提出新能源接入下配电变压器无功功率补偿方法研究。根据风电接入配电变压器模型,得到风机的有功平衡公式。通过计算风机的转差率阈值,给出新能源接入配电变压器方案时的无功等式,得到新能源接入配电变压器方案。当新能源接入配电变压器时,根据有功补偿功率与无功补偿功率的差值,约束配电变压器的节点,利用约束函数构建配电变压器无功功率补偿模型,实现配电变压器的无功功率补偿。实验结果表明,经过配电变压器无功功率补偿方法的补偿后,配电变压器的电流质量有所提高,具有更好的补偿效果。
Considering the instability of distribution transformer after new energy is connected,the reactive power compensation method of distribution transformer under new energy is proposed.According to the model of wind power connected to distribution transformer,the active power balance formula of wind turbine is obtained.By calculating the slip threshold of the fan,the reactive power equation of new energy connected to the distribution transformer scheme is given,and the scheme of new energy connected to the distribution transformer is obtained.When the new energy is connected to the distribution transformer,the nodes of the distribution transformer are constrained according to the difference between the active compensation power and the reactive compensation power,and the reactive power compensation model of the distribution transformer is constructed by using the constraint function to realize the reactive power compensation of the distribution transformer.The experimental results show that the current quality of distribution transformer is improved after the reactive power compensation method of distribution transformer,which has better compensation effect.
作者
杨阳
YANG Yang(Nantong Power Supply Branch of State Grid Jiangsu Electric Power Co.,Ltd.,Nantong 226006,China)
出处
《通信电源技术》
2023年第24期136-138,共3页
Telecom Power Technology
关键词
新能源
补偿
无功功率
配电变压器
new energy
compensation
reactive power
distribution transformer
