电容型高压设备绝缘在线监测系统的设计

Design of on-line insulation monitoring system for capacitive high-voltage equipment

提出了基于DSP的总线式结构的电容型高压设备绝缘在线监测系统,其信号的采集、分析和处理以及通信均由现场监测单元完成,实现绝缘参数的就地测量,避免了模拟小信号的远距离传输,提高了系统的抗干扰能力和测量结果的准确性,并且指出了依靠在线监测技术实现状态维修的可行性。绝缘在线监测系统的使用弥补了电网设备需要定期检修的不足。

An on-line insulation monitoring system based on the DSP mainline type structure for capacitive high-voltage equipment is advanced. Its signal acquisition, analysis and processing as well as the communication modules are completed by the scene monitor unit. The design realizes the in-situ measurement of the insulating parameters, avoids the long-distance transmission of the small analog signal and improves the system＇s anti-interference ability and the accuracy of measurement results. And the paper has pointed out the feasibility to achieve the state maintenance by using on-line monitoring techniques. At last, the using situation of the on-line insulation monitoring system compensates the disadvantages of periodical downtime maintenance for the electric network facilities.