供配电单元智能监测系统研究

发布时间：2018-06-08 17:18

本文选题：配电网 + 线损　；参考：《中国地质大学(北京)》2017年硕士论文

【摘要】：能源的日益枯竭,使得节能减损成为当前热门的话题,实现电能的精细化管理,节约能耗的同时保证电能质量,成为电力行业必须考虑的问题,智能电网技术也由此应运而生。但在实际运行中,因为电力网络的日趋复杂化,线路损耗、谐波污染以及故障排查困难等现象,给供电部门带来了巨大的经济损失,也导致了能源的虚耗和社会财富的流失。因此,结合当前先进的计算机和工业自动化技术,探讨实现能源的节约和电网的供电安全,具有重要的意义。本文基于实现电能精细化管理、节能降损、精准定位谐波及故障源的目的,主要开展了以下几点工作:首先探讨了线损的组成及产生原因,对各种不同类型线路及设备的等值阻抗和等值电路求解方法进行了深入的理论分析,探讨了几种常用的线损理论计算方法。其次,结合对线损的理论分析,将其引入对网络故障问题的判断,进行了详细的理论分析,并给出了线损异常的评估策略。再次,对配电网谐波进行了深入的理论分析,探讨了谐波的产生原因及谐波情况下电压、电流的畸变情况。介绍了谐波对电力网络的危害,同时,利用Matlab仿真,模拟了非线性负载产生谐波的情况,并分析了各次谐波含量,给出了谐波治理的方案。最后,结合前文理论分析,利用MCGS组态软件,建立了供配电单元智能监测系统。系统可以对各支路运行状况进行实时监控,实现了电能的精细化管理,灵活的量测体系,可满足各种不同单位的需求。本文详细讨论了供配电单元的电力智能管理,研究不仅实现了线路损耗的精细化管理,而且将线损分析引入了对故障的判断处理,给出了线损异常评估策略,同时实现了谐波源的精准定位。用电智能监测系统的建立,实现了单位电能的精细化管理,节约了能源,同时提高了单位经济收益。对于各级电力管理单位具有一定的借鉴意义。
[Abstract]:With the depletion of energy sources, energy conservation and loss has become a hot topic at present. It is necessary to consider the smart grid technology to realize the meticulous management of electric energy, to save energy consumption and to ensure the quality of power. However, due to the increasing complexity of power network, line loss, harmonic pollution and trouble in troubleshooting, it has brought huge economic losses to the power supply department, and also led to the waste of energy and the loss of social wealth. Therefore, it is of great significance to combine the advanced computer and industrial automation technology to realize the energy saving and the power supply safety of the power grid. In this paper, based on the realization of energy management, energy saving and loss reduction, accurate location of harmonics and fault sources, the main work is as follows: firstly, the composition and causes of line loss are discussed. In this paper, the equivalent impedance and equivalent circuit solving methods of various kinds of lines and equipments are deeply analyzed, and several common theoretical calculation methods of line loss are discussed. Secondly, combined with the theoretical analysis of line loss, it is introduced into the judgment of network fault problem, and the detailed theoretical analysis is carried out, and the evaluation strategy of line loss anomaly is given. Thirdly, the harmonic of distribution network is analyzed deeply, and the cause of harmonic generation and the distortion of voltage and current under harmonic condition are discussed. The harm of harmonic to power network is introduced. At the same time, the harmonic generation of nonlinear load is simulated by Matlab, and the harmonic content of each order is analyzed, and the scheme of harmonic treatment is given. Finally, the intelligent monitoring system of power supply and distribution unit is established by using MCGS configuration software. The system can monitor the running status of each branch in real time, realize the fine management of electric energy, flexible measurement system, and can meet the needs of various units. In this paper, the intelligent management of power supply and distribution unit is discussed in detail. The research not only realizes the fine management of line loss, but also introduces line loss analysis into the judgment of fault, and gives the evaluation strategy of line loss anomaly. At the same time, the accurate positioning of harmonic source is realized. The establishment of intelligent monitoring system realizes the fine management of the unit electric energy, saves energy and improves the unit economic income at the same time. For all levels of electric power management units have a certain reference significance.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM73;TM76

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