基于谐波畸变率和负载率的变压器损耗及寿命损失分析

本文对变压器谐波条件下的损耗及寿命损失进行了量化研究。首先建立了谐波条件下油浸式变压器的有功功率损耗的分解模型,得出了功率损耗相对谐波电流畸变率和变压器负载率的表达式,结合变压器最热点温升与有功功率损耗的关系以及变压器寿命损失与最热点温升的关系,建立了油浸式变压器寿命损失与谐波电流畸变率和变压器负载率关系的模型。分析了不同谐波畸变率和负载率下变压器谐波损耗和寿命损失的变化规律,以某型变压器为例进行了谐波条件下损耗和寿命损失的计算。本文对制定针对性措施以提高变压器谐波条件下的运行经济性具有参考价值。

The analysis of the active power and life loss of transformers based on harmonic current distortion and loading rate

This paper establishes a model under the transformer losses and a model under oil-immersed transformer condition life lost in harmonic decomposition;The transformer losses and loss of life are calculated under the conditions of harmonic, and it impacts on the theoretical analysis proposed harmonic losses in transformers and transformer loss of life harmonic current distortion and load rate, it also studys the variation of harmonic loss and loss of life in different harmonic distortion and load rate; For the development of targeted measures to improve grid efficiency and economy, and further effectively protect the interests of all parties and users of the electricity sector has an important theoretical value and practical significance.