一种配电线路有源自适应重合闸技术研究

发布时间：2018-06-27 13:47

本文选题：配电网 + 重合闸　；参考：《电网技术》2017年03期

【摘要】：传统配电线路自动重合闸由于无法实时判断线路故障性质而进行的盲目重合会对系统及断路器等电气设备造成不利影响。为此提出一种配电线路三相自适应重合闸技术,即当配电线路因相间故障跳闸且故障点断电去游离后,利用电力电子开关将逆变电源短时加到配电变压器低压侧,在给可能存在的故障点施加瞬时高压的同时,基于产生的暂态电压、电流获得停电线路的频域特性,借助线路谐波阻抗对停电线路内部结构进行辨识,进而决定断路器投入与否。该方法本质上是一种停电配电线路自动故障检测技术,理论、仿真和模拟实验都验证了该方法的有效性。
[Abstract]:The blind reclosing of traditional distribution line automatic reclosing can not be used to judge the fault property of the line in real time. It will have a negative impact on the system and electrical equipment such as circuit breakers and so on. In this paper, a three-phase adaptive reclosure technique for distribution lines is proposed, that is, when the distribution line is tripped due to a phase-to-phase fault and the fault point is switched off, the inverter power supply is added to the low-voltage side of the distribution transformer in a short time by using the power electronic switch. At the same time, the transient high voltage is applied to the possible fault points. Based on the generated transient voltage, the frequency domain characteristic of the power cut line is obtained by the current, and the internal structure of the power cut line is identified by the line harmonic impedance. And then determine whether the circuit breaker input or not. The method is essentially an automatic fault detection technique for power outage distribution lines. The effectiveness of the method is verified by theoretical, simulation and simulation experiments.
【作者单位】：电网智能化调度与控制教育部重点实验室(山东大学);国网山东省电力公司烟台供电公司;
【基金】：山东省重点科技计划资助项目(2015GGX104010) 山东省自然科学基金资助项目(ZR2013EEM026)~~
【分类号】：TM75;TM762.2

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