基于电力线载波的低压配电网拓扑结构检错模型

Fault detection model of low voltage distribution network based on power line carrier

由于低电压配电网受到电力线载波差异性特征量影响,导致检错稳定性以及可靠性降低,提出基于电力线载波的低压配电网拓扑结构检错模型。构建电力线载波信号模型,通过信号检波分析电力线载波信号特征;结合信号增强算法增强载波信号滤波,分析电导频率分布特征;结合频谱分量检测方法,融合电力线载波信息,通过配电网拓扑结构特征分析进行检错处理;结合电力线载波的差异性特征量,诊断电网拓扑结构的故障,建立低压配电网拓扑结构的检错分析和故障诊断模型,通过谐振电感和谐振电容的输出特征分布,实现低压配电网拓扑结构的检错分析。仿真结果表明,低压配电网拓扑结构检错处理的稳定性和可靠性较高,提高了低压配电网拓扑结构的安全稳定运行和运维管理能力。

Since the lowvoltage distribution network is affected by the difference characteristic quantity of power line carrier,the stability and reliability of fault detection are reduced.Therefore,the paper proposes a fault detection model of low-voltage distribution networks based on power line carrier.A power line carrier(PLC) signal model is constructed.The characteristics of power line carrier signal are analyzed by signal detection.The filtering of carrier signal is enhanced by signal enhancement algorithm and the distribution characteristics of conductance frequency are analyzed.Combined with the spectrum component detection method,the power line carrier information is integrated.Through the analysis of topology structure characteristics of distribution networks,the fault detection is carried out.Combined with the difference characteristic quantity of power line carrier,the fault of grid topology is diagnosed and fault detection and diagnosis models of low-voltage distribution network topology are established.The fault detection analysis of low-voltage distribution network topology is realized by the output characteristic distribution of resonant inductance and resonant capacitor.The simulation results show that the stability and reliability of fault detection of low-voltage distribution network topology are high,and the safe and stable operation and operation and maintenance management ability of low-voltage distribution network topology are improved.