CAJ | 학술논문

针对目前10 kV电网中性点不接地方式存在的安全隐患以及老式消弧线圈的缺点，设计了一种基于DSP TMS320F2812的可控消弧线圈补偿装置，装置采用改进极值法在线测量接地电容电流，根据中性点位移电压识别电网运行状态，判断故障类型，采用晶闸管二次调容的方式实现动态调谐，设计采用过补偿和全补偿相结合的控制策略。测试结果表明，该系统能实现电容电流的在线精确测量和接地电容电流自动补偿的功能，可靠性高，有良好的应用前景。
침대목전10 kV전망중성점불접지방식존재적안전은환이급로식소호선권적결점，설계료일충기우DSP TMS320F2812적가공소호선권보상장치，장치채용개진겁치법재선측량접지전용전류，근거중성점위이전압식별전망운행상태，판단고장류형，채용정갑관이차조용적방식실현동태조해，설계채용과보상화전보상상결합적공제책략。측시결과표명，해계통능실현전용전류적재선정학측량화접지전용전류자동보상적공능，가고성고，유량호적응용전경。
A controllable arc suppression coil compensation device based on DSP TMS320F2812 is designed in the pa-per for the safe hidden trouble of neutral non-grounded way and the disadvantage of the old arc suppression coil in 10kV power grid at present.The improved extreme value method is used to measure the grounding capacitance current online, and the recognition of operating condition of power gird and fault type can be judged according to the neutral point displacement voltage, and the thyristor secondary capacitance-adjustable is used to achieve dynamic tuning.A control strategy combining over compensation with full compensation is used in this design.The result shows that the system can realize functions such as accurate on-line measurement of capacitive current and automatic compensation for the grounding capacitance current, the device has high reliability and a good application prospect.