基于最小二乘法的变压器参数实时校核

我国城乡电网的改造和电力市场的发展对配电变压器的安全、可靠运行要求越来越高。而准确的设备参数是变压器经济运行的前提，为此，利用配电自动化系统进行测量，获取变压器的有功功率、无功功率、电压等数据，采用最小二乘法的过程辩识方法，进行曲线拟合计算，对变压器运行参数和功率损耗特性进行实时校核统计，从而为经济运行奠定基础。

Real-time verification of transformer parameters based on least square method

The reconstruction of urban and rural power grids and the development of electricity market in China have set stricter requirements on the safety and reliability of distribution transformers. As accurate equipment parameters are preconditions for economic transformer operation, the distribution automation system is used to measure transformer data such as active power, reactive power and voltage; the least square method is adopted in curve fitting computation, real-time verification and statistics made on transformer operation parameters and power loss characteristics, so as to lay a foundation for economic operation.