基于智能电能表数据三相不平衡治理的研究与实践

国网吉林电力城网和农网有约11万公变台区，三相不平衡对电压合格率、线损、变压器负载能力及设备健康水平等指标影响较大，在传统的三相负载不平衡调整方法中，一线员工常常根据运行数据，凭借经验解决现场问题，由于没有科学的调整方法，效果往往不佳。国网吉林电力已经实现智能电能表全覆盖，充分利用智能电能表的非计量数据和相关应用技术，创新提出基于电力线窄带载波同步过零技术，开展低压客户自动相位识别技术研究，实现对客户所在相位的判别，运用贪心算法智能生成三相不平衡治理策略，开发简单易用的智能辅助工具，为一线员工提供解决实际问题的有效技术手段，在保证各项指标的基础上，进一步提高供电可靠性和公司经济效益。

Research and Practice of Three-phase Unbalanced Treatment Based on the Data of Smart Meter

There are about 110 thousand low voltage areas in city and rural power network in Jilin. Three-phase unbalance has great influence on voltage qualification rate, line loss, load capacity of transformer and level of equipment health. In the traditional adjustment method of three-phase load imbalance, front-line employees often solve on-site problems based on operation data and experience. As there is no scientific adjustment method, the effect is often poor.Full coverage of smart meter has been realized in state grid Jilin company. Making full use of the non-metering data and related application technologies of smart meters,and innovatively proposed the technology of synchronous zero crossing based on power line narrow band carrier,carrying out the research on automatic phase recognition technology of low-voltage customers, realizing the discrimination of the phase of the customer, and three-phase unbalanced governance strategy is generated intelligently based on the greedy algorithm,which can develop simple and easy to use intelligent auxiliary tools, provide effective technical means to solve practical problems for front-line staff, and further improve power supply reliability and economic benefit on the basis of guaranteeing various indexes.