基于奇异值分解的配电变压器有载自动调压方法

On-Load Automatic Voltage Regulation Method for Distribution Transformers Based on Singular Value Decomposition

电力用户负荷种类的多样化造成变压器电压波动超出允许范围,严重影响电力系统的供电质量,因此提出基于奇异值分解的配电变压器有载自动调压方法。基于奇异值分解技术提取配电变压器分接头间的电压信号,使用比例积分微分(Proportion Integral Differential,PID)控制算法根据分接头间电压和额定电压范围之间的偏差输出控制信号,控制触发分接开关的导通与关断,实现配电变压器的有载自动调压。实验结果表明,设计方法可以通过控制分接开关位置维持电压的平稳,且不会对负载产生不利影响。

The diversification of power users’load types leads to transformer voltage fluctuation beyond the allowable range,which seriously affects the power supply quality of power system.Therefore,a method of on-load automatic voltage regulation of distribution transformers based on singular value decomposition is proposed.Based on singular value decomposition technology,the voltage signal between taps of distribution transformer is extracted,and Proportion Integral Differential(PID)control algorithm is used to output control signal according to the deviation between the voltage between taps and the rated voltage range,so as to control the on-load automatic voltage regulation of distribution transformer.The experimental results show that the design method can keep the voltage stable by controlling the position of tap changer,and it will not adversely affect the load.