配网变压器二次侧继电保护优化方案

Optimization Scheme of Secondary Side Relay Protection for Distribution Network Transformer

随着社会经济的持续发展,对配网供电稳定性和安全性要求也在持续提升。在此背景下,一方面,推动自动化系统渠道传统变压器二次侧继电保护已成为必然趋势;另一方面,智能电网的建设与发展也促使配网运行更加智能化。基于此,本文分析说明配网变压器二次侧继电保护的作用,并结合当前配网变压器二次侧继电保护缺陷,合理提出继电保护改进优化方案。另外,基于配电变压器差动保护原理及二次侧接线要求,从数字化控制、数字化运行以及数字化保障3个角度介绍智能电网背景下配电变压器二次侧数字化继电保护。

With the sustainable develop ment of social economy,the requirements for the stability and security of power supply in the distribution network are also continuously improving.In this context,on the one hand,it has become an inevitable trend to promote the traditional transformer secondary side relay protection in the automation system channel,on the other hand,the construction and development of smart grid also promote the distribution network to operate more intelligently.Based on this,this paper will analyze and explain the role of the relay protection on the secondary side of the distribution network transformer,and combine the current defects of the relay protection on the secondary side of the distribution network transformer,reasonably propose the improvement and optimization scheme of the relay protection.In addition,based on the differential protection principle of distribution transformer and secondary side wiring requirements,the digital relay protection of distribution transformer secondary side in the context of smart grid is introduced from three perspectives of digital control,digital operation and digital security.