郭成蛟 肖安全 袁奔 王锐 张坤友 尚津臣 张霞鹏 田景刚

摘   要：针对线路损耗，提出了应用UPFC来降低配网损耗。使用UPFC能够精确控制潮流分布，改善输电线路潮流分布，有效减低了三相不平衡造成的线路损耗，提高了线路输电能力，增强了电网的可靠性。在UPFC设备中增加新型的三相功率补偿电路，能够自动采集电网电路中的电压信号和电流信号，并对采集到的电压信号和电流信号进行计算，通过控制电路将计算出的信号信息生成驱动信号，驱动信息传递到主电路，主电路根据驱动信号对电网进行电流补偿，计算机控制操作过程，并显示控制结果。实验表明，本设计方法明显降低了电网电路中的损耗，增加了有功功率的使用，为电网电路的稳定运行提供良好的环境。

关键词：电网;损耗;UPFC;电流补偿;可靠性

中图分类号：TP391.9                                         文献标识码：A

文章编号：1003—6199（2020）02—0082—04

Abstract：For the line loss，the application of UPFC to reduce the distribution network loss is proposed. using UPFC accurately control the power flow distribution and improve the power flow distribution of transmission lines. It effectively reduces the line loss caused by the three-phase unbalance，improves the line transmission capacity，and enhances the reliability of the power grid，a new three-phase power compensation circuit is added to the UPFC device，which can automatically collect the voltage signal and current signal in the grid circuit，and calculate the collected voltage and current signal. The calculated signal information is generated by the control circuit to generate a driving signal，and the driving information is transmitted to the main circuit. The main circuit performs current compensation on the power grid according to the driving signal，and the computer controls the operation process and displays the control result. The experiments show the method designed significantly reduces the loss in the grid circuit，increases the use of active power，and provides a good environment for the stable operation of the grid circuit.

Key words：power grid;loss;UPFC;current compensation;reliability

随着电网技术的飞速发展，用电负荷日益增加，配电网络经常会出现电压低、网络复杂、输送距离长等问题，这些因素容易导致电网电路上损耗严重，配网损耗是国电网公司、供电企业、用户等面临的严峻问题[1-3]。该问题不仅影响各公司的电网结构布局，还影响供用电企业的管理水平和技术水平[4-7]。为了确保电网运行安全，通常使用统一潮流控制器（Unified Power Flow Controller，UPFC）实现配网损耗优化，通过使用UPFC，能够快速地单独控制电网输电线路中的有功功率和无功功率，大大降低线路损耗、提高电网质量[8-10]。

UPFC为包括具有电压调节、串联补偿和移相等能力的柔性交流输电装置[11-13]。……