面向多能源系统的配网分割算法研究

Research on Distribution Network Segmentation Algorithm for Multi-Energy Systems

摘要: 本文针对理想变压器(ITM)出现的接口数据传输延时问题，提出一种适用于多能源系统的配网分割算法。由于分割模型的延时会在时域上引发交流信号的偏移，进而在频域内造成其相位的变化，因此，本文根据Fourier分解设计出在三相交流系统电气量相位差进行接口信号的延时补偿，对串行计算中的电压型ITM接口，获取各相电压信号进行Fourier分解，提取出基波和主要谐波的幅值与相位；然后，对提取出的分量，分别计算出因接口延时而产生的相位延迟误差；获得相位误差延迟后，根据电压信号的基波及主要谐波量的相位，得出由接口延时导致的总体相位偏移，利用这些幅值数据、相位信息及系统频率，重新合成电压信号；最终，将重新合成的电压信号作为受控源的输入，进而实现接口延时的补偿。最后在Simulink中搭建了仿真模型，验证了该方法的正确性和有效性。

Abstract: Aiming at the problem of interface data transmission delay in ideal transformer (ITM), this paper presents a distribution network segmentation algorithm suitable for multi-energy systems. Because the delay of the segmentation model will cause the AC signal to shift in the time domain, and then cause the phase change in the frequency domain, this paper designs the delay compensation of the interface signal in the three-phase AC system based on the Fourier decomposition, and performs Fourier decomposition on the voltage ITM interface in the serial calculation to obtain the voltage signal of each phase. The amplitudes and phases of fundamental and main harmonics are extracted. Then, the phase delay errors caused by interface delay are calculated for the extracted components. After the phase error delay is obtained, the overall phase shift caused by the interface delay is obtained according to the phase of the main harmonics of the voltage signal, and the voltage signal is synthesized by using these amplitude data, phase information and system frequency. Finally, the synthesized voltage signal is used as the input of the controlled source to compensate the interface delay. Finally, a simulation model is built in Simulink to verify the correctness and effectiveness of the proposed method.