10kV配电线路分段开关级差保护方法优化研究

Study on Optimization of Differential Protection Method of 10 kV Distribution Line Sectional Switches

级差保护方法是一种广泛应用于电力系统的保护技术,通过比较电流的差值来检测和隔离故障,从而保护配电线路。因此,研究和优化10 kV配电线路的分段开关级差保护方法尤为重要。文章分析了现有保护方法在实际应用中面临的主要问题,包括误动作和拒动作等,并探讨这些问题对电力系统稳定性的潜在影响。基于此,提出一系列保护方法的优化策略,以提高保护方法的准确性和响应速度。通过实验测试证实,提出的优化策略能够显著提高10 kV配电线路的级差保护性能,为确保电力系统的可靠运行提供了有力支持。

Differential protection method is a kind of protection technology widely used in power system,which detects and isolates faults by comparing the difference of current,thus protecting distribution lines.Therefore,it is particularly important to study and optimize the sectional switch differential protection method for 10 kV distribution lines.This paper analyzes the main problems faced by existing protection methods in practical application,including misoperation and refusing action,and discusses the potential impact of these problems on the stability of power system.Based on this,a series of optimization strategies of protection methods are put forward to improve the accuracy and response speed of protection methods.Proved by experimental tests,the proposed optimization strategy can significantly improve the differential protection performance of 10 kV distribution lines,which provides strong support for ensuring the reliable operation of power system.