变压器经济运行损耗统一评估算法的研究及应用

Study on a united evaluation algorithm and its applications for economic operation of transformer

在单台变压器运行损耗分析的基础上，将单台双绕组或三绕组变压器运行、两台双绕组或三绕组变压器并列运行时的损耗表达式统一为一个评估算法，并且推导出这四种运行方式下，削峰填谷对变压器降耗效果中的降耗量、最佳调载量的统一表达方式；并通过某变电站的双主变并列运行的算例表明削峰填谷对变压器经济运行的作用。

In this paper, unified loss expressions are introduced based on the loss expression of transformer g independent operation. These unified expressions combine loss expressions of both independent and parallel operation of double winding or three - winding transformer. Based on the unified loss expression, a unified energy saved amount expression and a unified optimal load shift amount ex- pression in peak load shifting is derived. A calculation for an example is demonstrated to show the effect of peak load shifting to trans- formers＇energy saving.