Low Voltage Self-Adjustable Adjustable Voltage Control Device

针对贵州山区农村配电网因地形复杂、用户分散、供电半径过长及季节性负荷激增导致的末端低电压问题，本研究提出一种基于功率传输提升装置的系统性解决方案。该地区大山脉、大落差的地理特征导致配电网基建改造效率低下，传统扩容方案易引发配变空载浪费，难以满足600万务工人员春节返乡期间突增的用电需求。本文通过开发新型功率传输提升装置，融合动态调压与智能补偿技术，在用电高峰期间稳定输出电流并优化电压质量，有效解决超供电半径用户的低电压问题。装置采用模块化设计，可灵活部署于配网末端，显著降低因新增配变导致的空载损耗，同时规避基建项目投资大、周期长的缺陷。应用结果表明，该方案不仅能实现电压合格率提升至98%以上，还可减少约40%的运维成本，为山地农村电网提供了一种高效、经济且可持续的低电压治理范式，对乡村振兴战略下的电力服务升级具有重要实践价值。Aiming at the problem of low terminal voltage caused by complex terrain, scattered users, long power supply radius and seasonal load surge in Guizhou mountainous rural distribution network, this study proposes a systematic solution based on power transmission lifting device. The geographical characteristics of large mountains and large gaps in the region lead to low efficiency of distribution network infrastructure transformation. The traditional expansion scheme is easy to cause no-load waste of distribution transformers, and it is difficult to meet the sudden increase in electricity demand during the Spring Festival return of 6 million migrant workers. In this paper, by developing a new type of power transmission lifting device, integrating dynamic voltage regulation and intelligent compensation technology, the output current is stabilized and the voltage quality is optimized during the peak period of power consumption, and the low voltage problem of users with ultra-power supply radius is effectively solved. The device adopts modular design, which can be flexibly deployed at the end of the distribution network, significantly reducing the no-load loss caused by the new distribution transformer, and avoiding the defects of large investment and long cycle of infrastructure projects. The application results show that the scheme can not only improve the voltage qualification rate to more than 98%, but also reduce the operation and maintenance cost by about 40%. It provides an efficient, economical and sustainable low-voltage governance paradigm for mountainous rural power grids, and has important practical value for the upgrading of power services under the rural revitalization strategy.