电力电缆实时载流量评估系统设计

为了提高电力电缆的利用率,合理调配电缆的实时负荷,利用实时环境参数监测终端、GPRS数据传输模块和上位机构成了高压电力电缆实时载流量评估系统。并利用DS18B20、风力传感器、土壤温湿度传感器、光照传感器和STM32嵌入式单片机对环境参数进行实时监测,实现了对环境温度、土壤湿度、土壤温度、环境风力、环境光照等参数的实时采集,并利用GPRS数据传输模块将环境参数传送到上位机,利用上位机结合VB6.0和ANSYS编制了高压电力电缆温度场和载流量计算软件,实现了电力电缆参数数据库存储、敷设模式界面化操作、环境参数的实时监测与显示、实时动态载流量的在线计算等功能。计算结果表明,高压电力电缆的实时动态载流量系统能够准确计算出受环境参数影响的高压电力电缆的载流量,提高了计算效率,为电力部门调配电缆的实时负荷提供了依据。

Design of real-time current carrying capacity evaluation system for power cable

In order to give out the advice for power grid to manage the real-time current-carrying capacity of power cable and improve the utilization of power cables, the real time current-carrying capacity evaluation system is constructed for high voltage power cable including the terminal to monitor real time environment parameters, GPRS to transmit the environment data and the main computer. First of all, the real-time environmental parameters monitoring system consisting of DS18B20, wind sensor, soil temperature and humidity sensor, illumination sensor and STM32 embedded MCU is designed, realizing real-time collection of the environmental parameters such as ambient temperature, soil moisture, soil temperature, ambient wind and light, and so on. The environment data is transmitted to the main computer by GPRS data transmission module. By using the computer combing VB6.0 and ANSYS, the software is programmed to calculated the temperature and current-carrying capacity of high voltage power cable. Some functions, such as database storage of power cable size, window mode to show the arrangement of cables, real-time monitoring and show of environment parameters and on-line calculation of real-time current-carrying capacity, are realized in the system. Studying the real-time current-carrying capacity system of high voltage power cable is of great significance to rationally arrange the load of the cable in real time.