非侵入式电力负荷在线分解

基于用电设备正常工作时的稳态电流（包含基波和谐波）具有一定统计规律性，提出了一种非侵入式电力负荷在线分解方法．当某一电力负荷内部含有n类主要用电设备时，其电流可近似用这n类用电设备电流的线性叠加来估计．负荷分解是应用最优方法求取一组合理的权重系数，使负荷估计电流与负荷真实电流最为接近，从而确定电力负荷中不同类型用电设备的功率消耗比例．实验结果表明，所提出的负荷分解方法不仅具有较高的精度和较好的稳定性，而且便于在线实现．

Nonintrusive Method for On-Line Power Load Decomposition

A novel nonintrusive method for on-line power load decomposition was proposed based on the fact that in normal operation states of electrical appliances,steady-state currents （including fundamental and harmonic currents） of electrical appliances have certain statistical regularity. A power load current can be approximately estimated by the linear superposition of the currents components of n main types of electrical appliances when the power load consists of n main types of electrical appliances. The subject of the power load decomposition is to calculate a group of reasonable weight coefficients by an optimization method,so that the estimation current has the maximum similarity with the real current, and therefore the power consumption ratio of different types of electrical appliances can be confirmed. The experimental results indicate that the load decomposition method not only has higher precision and better stability, but also is easy to be realized on-line.