配电网单相接地选线和接地电流补偿一体化装置

阐述了配电网单相接地选线和接地电流补偿原理，采用微机控制和动态改变接地电感的方法，解决了选线与补偿之间的矛盾，首创选线和补偿一体化装置。装置的核心部分是调励磁式消弧线圈和微机控制系统。配电网正常运行时，装置自动跟踪电网参数并计算相对地电容电流。配电网单相接地时，装置能准确地选出单相接地线路和完全补偿单相接地电容电流。

An Integrative Device of Single-Phase Grounding Line Selection and Grounding Current Compensation in Distribution Network

The principle of single phase grounding line selection and grounding current compensation for distribution network is introduced.With microprocessor control and dynamic changing of grounding inductance,the contradiction between line selection and current compensation is solved and an integrative device of line selection and current compensation is first invented.The device's core is an arc suppression coil with changeable magnetizing current controlled by a microprocessor control system.Under normal operation of distribution network,the device automatically traces network parameters and calculates phase to ground capacitive current.Under single phase grounding incident of distribution network,the device can exactly select the grounding line and completely compensate single phase grounding capacitive current.