关于余热余能发电机组中性点接地方式的探讨  

Discussion on neutral point grounding methods for waste heat and energy recovery generator Units

作　　者：刘果 LIU Guo(Hunan MCC Changtian Energy Saving and Environmental Protection Technology Co.,Ltd.,Changsha 410205,Hunan,China)

机构地区：[1]湖南中冶长天节能环保技术有限公司,湖南长沙410205

出　　处：《工程建设》2025年第4期63-67,共5页Engineering Construction

摘　　要：目前,余热余能发电机组通常采用直配线式接入母线的小型机组,但其接地方式选择仍沿用火力发电或电网系统的传统模式,未能充分考虑余热余能机组的特殊性。文章以某钢厂的余热余能发电机组为例,系统性地分析了不同接地方式在实际应用中的适用性及优缺点,并结合机组运行特点,提出了一套针对性的接地方式选取方法。结果表明:该方法综合考虑了系统特性、保护配合及运行可靠性等多维度因素,可为今后相关行业的余热余能机组中性点接地方式的选取提供科学依据和实践参考。Currently,waste heat and waste energy power generation units typically adopt a direct-connected line connection to the busbar as small-scale units.However,the selection of their neutral grounding methods still follows the traditional patterns used in thermal power generation or power grid systems,without adequately considering the unique characteristics of waste heat and waste energy units.This article takes a waste heat and waste energy power generation unit from a steel plant as an example,the applicability and advantages/disadvantages of different grounding methods in practical applications are systematically analyzed.Based on the operational characteristics of the units,a targeted method for selecting grounding methods is proposed.This method comprehensively considers factors such as system characteristics,protective coordination,and operational reliability.The study demonstrates that the selection of neutral grounding methods for waste heat and waste energy power generation units should fully account for their direct-connected line characteristics and system features.The method proposed in this article provides a scientific basis and practical reference for the selection of grounding methods in similar units within related industries.

关 键 词：余热余能发电 中性点接地方式 直配线式 

分 类 号：TM617[电气工程—电力系统及自动化]