Core Insights - The successful operation of China's first distribution transformer capacity expansion and voltage regulation balancing device marks a significant breakthrough in flexible control of distribution networks and power quality management [1][2] Group 1: Device Development and Features - The device was jointly developed by the Yunnan Electric Power Research Institute, Yunwang Energy Company, and CRRC Zhuzhou Institute, and was put into operation in Jitou Village, Malong District, Qujing, Yunnan [1] - The device can achieve flexible power regulation between distribution transformers, with a control capacity of 100 kVA and a maximum of 135 kVA, and a voltage adjustment range of ±10% [2] - It features easy installation, stable operation, and support for emergency power sources such as energy storage [2] Group 2: Industry Challenges and Solutions - The increasing demand for electricity in rural areas, the proliferation of household appliances, and seasonal agricultural electricity usage have led to significant overload issues in distribution transformers [1] - The integration of new sources and loads, such as distributed photovoltaics and electric vehicle charging facilities, has introduced challenges like voltage fluctuations, reverse overloads, and harmonic pollution, affecting power supply safety and quality [1] - The Yunnan Electric Power Research Institute has been addressing these issues since 2021, developing key technologies for energy balance and quality control over four years [1]

针对上述问题，云南电科院自2021年起牵头开展技术攻关，提出柔性并联电能变换技术思路。历经4年 潜心研发，项目团队攻克了多台配变分相电能平衡、变间能量灵活变换与电能质量控制等关键技术，成 功研制出配变增容调压调平衡装置。该装置可有效解决配变单相或三相重过载、三相不平衡、电压偏高 或偏低及谐波等综合治理难题，为构建安全可靠、绿色高效的新型配电系统提供了关键技术支撑。 此次投运的装置可在配电变压器间实现功率柔性调控，调控能力可达100千伏安，最高可达135千伏安， 电压调节范围达±10%，兼具谐波治理功能。装置具备安装便捷、运行稳定、支持储能等应急电源接入 等特点。现场运行数据显示，鸡头村2号台区供电可靠率与电能质量得到显著提升，获得当地用户认 可。 1月11日，由南方电网云南电科院联合云网能源公司、中车株洲所共同研发的国内首套配变增容调压调 平衡装置，在云南曲靖马龙区鸡头村2号台区成功投运，标志着我国在配电网柔性调控与电能质量治理 方面取得重要突破。 近年来，随着农村地区用电需求快速增长，家用电器普及以及农业生产季节性用电叠加，配变重过载问 题日益突出。同时，分布式光伏、电动汽车充电设施等新型源荷大规模接入，给 ...