高压电缆线路在线监测技术及应用

发布时间：2018-01-13 01:21

本文关键词：高压电缆线路在线监测技术及应用　出处：《天津大学》2014年硕士论文　论文类型：学位论文

【摘要】：电力电缆应用范围广阔，涉及电力、建筑、通信、制造等等供电及辅助系统，与国家经济发展和人民生活密切相关。为了提高电力系统的运行可靠性，减少电力故障的发生，及时、准确的获取电力电缆运行状态和故障信息，是电力系统的重要问题，也是提高供电可靠性、安全性的基本保障。 XLPE电缆作为高压电缆的主流产品，，已经取得越来越广泛应用。为了实现XLPE电缆的在线运行监测，及时了解运行中潜在隐患，掌握设备运行状态，从而能够采取相应措施，减少因突发状况造成的电网事故，提高供电的可靠性。课题针对XLPE电缆的局部放电问题，搭建运行电缆的在线监测系统，应用于实际工程。课题研究主要工作包括：（1）在调研XLPE电缆在生产、安装、运行过程中可能存在的各种缺陷的基础上，确定实际生产中出现的典型缺陷种类；针对XLPE电缆典型故障进行模拟、仿真并制作典型缺陷模型。（2）基于局部放电检测电路模型，搭建电缆局放在线检测系统；对制作的各种典型电缆故障模型进行实验室测试，验证局放采集电路正确性。（3）XLPE电缆在线监测体系的整体构建工作。具体工作有：XLPE电缆局部放电信号的采集、输送回路的选择和搭建；XLPE电缆分布式光纤测温系统的应用及其工作标准；分析XLPE电缆多参量在线监测系统所需后台监测软件功能，并开发相应的监测软件。（4）进行220kV高压电缆在线监测系统实际工程建设，建成集局部放电、运行温度于一体的实时在线监测系统，并且监测数据实现了远程访问和监控，为运行技术人员实时分析电缆运行状态提供了技术保障。
[Abstract]:Power cable has a wide range of applications, involving power, construction, communications, manufacturing and other power supply and auxiliary systems, closely related to national economic development and people's lives. In order to improve the operational reliability of the power system. It is an important problem of power system to reduce the occurrence of power failure and obtain the operation state and fault information of power cable timely and accurately. It is also the basic guarantee to improve the reliability and safety of power supply. As the mainstream product of high-voltage cable, XLPE cable has been more and more widely used. In order to realize the on-line operation monitoring of XLPE cable, understand the potential hidden trouble in operation in time, and master the running state of equipment. Therefore, the corresponding measures can be taken to reduce the power network accidents caused by sudden situation and improve the reliability of power supply. Aiming at the partial discharge problem of XLPE cable, the on-line monitoring system of running cable is built. Application in practical engineering. The main research work includes: 1) on the basis of investigating various defects that may exist in the production, installation and operation of XLPE cables, the typical types of defects in actual production are determined. The typical fault of XLPE cable is simulated and the typical defect model is made. 2) based on the partial discharge detection circuit model, the cable line detection system is built, and the various typical cable fault models are tested in laboratory to verify the correctness of the local discharge acquisition circuit. The whole construction of on-line monitoring system for XLPE cable is carried out. The concrete work includes the collection of partial discharge signal of the cable, the selection and construction of transmission circuit; The application and working standard of XLPE cable distributed optical fiber temperature measurement system; The function of background monitoring software for XLPE cable multi-parameter on-line monitoring system is analyzed, and the corresponding monitoring software is developed. The real engineering construction of 220 kV HV cable on-line monitoring system is carried out. A real-time on-line monitoring system with partial discharge and operating temperature is built, and the remote access and monitoring of monitoring data are realized. It provides technical guarantee for real-time analysis of cable running state.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM764;TM75

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