Research on Multi-point Grounding and Fault Location Based on Wireless Communication
In order to accurately extract the three-phase current fault components and improve the multi-point grounding fault location effect,a multi-point grounding and fault location method based on wireless communication is proposed.It uses ZigBee wireless communication technology to collect and transmit multi-point grounding current information,takes wireless sensors as nodes,and uses the fault network current extraction method of adjacent node information to obtain the current difference be-tween adjacent nodes,i.e.,multi-point grounding transient zero-sequence three-phase current fault component.Based on the fault component,a multi-point grounding fault location model is established,the adaptive binary differential evolution algorithm is used to solve the fault location model,and the binary differential evolution algorithm is improved through the adaptively ad-justed variation factor and cross factor to obtain more accurate solution.Experiments show that the method can accurately transmit the three-phase current information,reasonably extract the three-phase current fault components,and is consistent with the actual situation.Under different transition resistances and phase angles,the ground fault location error of this method is only 0.04.
万方数据
维普
